commit files

33 files changed, 20932 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..66ae19c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/.vite
+/node_modules
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..adb57de
--- /dev/null
+++ b/README.md
@@ -0,0 +1,13 @@
+# PHPerKaigi 2025 デジタルサーカス株式会社トークン問題
+
+## 概要
+
+[PHPerKaigi 2025](https://phperkaigi.jp/2025/) の PHPer チャレンジにおける、[デジタルサーカス株式会社](https://www.dgcircus.com/)からのトークン問題です。
+
+## 問題
+
+
+## 注意
+
+この問題は、ソースコードを直接閲覧すれば容易にトークンを得ることができます。
+自力で解きたい場合は GitHub のソースコードやブラウザの DevTools などは開かないことをお勧めします。
diff --git a/docs/assets/index-Cfp0VNTF.css b/docs/assets/index-Cfp0VNTF.css
new file mode 100644
index 0000000..d3f6506
--- /dev/null
+++ b/docs/assets/index-Cfp0VNTF.css
@@ -0,0 +1 @@
+body{margin:0;padding:0;font-size:14px;background-color:#ee0}table#layout{width:800px;margin:0 auto;border:4px solid #000}#layout td{border:2px solid #00e;padding:10px;vertical-align:top}#header{text-align:center;font-weight:700;font-size:32px;background-color:#e0e;color:#fff}#sidebar{width:200px;background-color:#ec0}#sidebar .hidden{color:#ec0}#content{background-color:#ee0}code{background-color:#eee;padding:2px 4px}input[type=text]{width:180px;background-color:#eee;border:1px solid #000;padding:2px 4px}.marquee{overflow:hidden;white-space:nowrap;box-sizing:border-box;width:300px}.marquee span{display:inline-block;padding-left:100%;animation:marquee-scroll 10s linear infinite}@keyframes marquee-scroll{0%{transform:translate(0)}to{transform:translate(-100%)}}
diff --git a/docs/assets/index-CifHWjMi.js b/docs/assets/index-CifHWjMi.js
new file mode 100644
index 0000000..cb6e6a7
--- /dev/null
+++ b/docs/assets/index-CifHWjMi.js
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r=t.pendingProps,l=r.revealOrder,u=r.tail;if(Ie(e,t,r.children,n),r=ae.current,(r&2)!==0)r=r&1|2,t.flags|=128;else{if(e!==null&&(e.flags&128)!==0)e:for(e=t.child;e!==null;){if(e.tag===13)e.memoizedState!==null&&Gs(e,n,t);else if(e.tag===19)Gs(e,n,t);else if(e.child!==null){e.child.return=e,e=e.child;continue}if(e===t)break e;for(;e.sibling===null;){if(e.return===null||e.return===t)break e;e=e.return}e.sibling.return=e.return,e=e.sibling}r&=1}if(re(ae,r),(t.mode&1)===0)t.memoizedState=null;else switch(l){case"forwards":for(n=t.child,l=null;n!==null;)e=n.alternate,e!==null&&nl(e)===null&&(l=n),n=n.sibling;n=l,n===null?(l=t.child,t.child=null):(l=n.sibling,n.sibling=null),ti(t,!1,l,n,u);break;case"backwards":for(n=null,l=t.child,t.child=null;l!==null;){if(e=l.alternate,e!==null&&nl(e)===null){t.child=l;break}e=l.sibling,l.sibling=n,n=l,l=e}ti(t,!0,n,null,u);break;case"together":ti(t,!1,null,null,void 0);break;default:t.memoizedState=null}return t.child}function cl(e,t){(t.mode&1)===0&&e!==null&&(e.alternate=null,t.alternate=null,t.flags|=2)}function Nt(e,t,n){if(e!==null&&(t.dependencies=e.dependencies),nn|=t.lanes,(n&t.childLanes)===0)return null;if(e!==null&&t.child!==e.child)throw Error(m(153));if(t.child!==null){for(e=t.child,n=Kt(e,e.pendingProps),t.child=n,n.return=t;e.sibling!==null;)e=e.sibling,n=n.sibling=Kt(e,e.pendingProps),n.return=t;n.sibling=null}return t.child}function ff(e,t,n){switch(t.tag){case 3:Ks(t),xn();break;case 5:cs(t);break;case 1:Ve(t.type)&&Kr(t);break;case 4:Mu(t,t.stateNode.containerInfo);break;case 10:var r=t.type._context,l=t.memoizedProps.value;re(qr,r._currentValue),r._currentValue=l;break;case 13:if(r=t.memoizedState,r!==null)return r.dehydrated!==null?(re(ae,ae.current&1),t.flags|=128,null):(n&t.child.childLanes)!==0?Xs(e,t,n):(re(ae,ae.current&1),e=Nt(e,t,n),e!==null?e.sibling:null);re(ae,ae.current&1);break;case 19:if(r=(n&t.childLanes)!==0,(e.flags&128)!==0){if(r)return Zs(e,t,n);t.flags|=128}if(l=t.memoizedState,l!==null&&(l.rendering=null,l.tail=null,l.lastEffect=null),re(ae,ae.current),r)break;return null;case 22:case 23:return t.lanes=0,$s(e,t,n)}return Nt(e,t,n)}var Js,ni,qs,bs;Js=function(e,t){for(var n=t.child;n!==null;){if(n.tag===5||n.tag===6)e.appendChild(n.stateNode);else if(n.tag!==4&&n.child!==null){n.child.return=n,n=n.child;continue}if(n===t)break;for(;n.sibling===null;){if(n.return===null||n.return===t)return;n=n.return}n.sibling.return=n.return,n=n.sibling}},ni=function(){},qs=function(e,t,n,r){var l=e.memoizedProps;if(l!==r){e=t.stateNode,en(gt.current);var u=null;switch(n){case"input":l=Ll(e,l),r=Ll(e,r),u=[];break;case"select":l=_({},l,{value:void 0}),r=_({},r,{value:void 0}),u=[];break;case"textarea":l=Ml(e,l),r=Ml(e,r),u=[];break;default:typeof l.onClick!="function"&&typeof r.onClick=="function"&&(e.onclick=$r)}Fl(n,r);var i;n=null;for(p in l)if(!r.hasOwnProperty(p)&&l.hasOwnProperty(p)&&l[p]!=null)if(p==="style"){var 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p=u;(t.updateQueue=p)&&(t.flags|=4)}},bs=function(e,t,n,r){n!==r&&(t.flags|=4)};function dr(e,t){if(!se)switch(e.tailMode){case"hidden":t=e.tail;for(var n=null;t!==null;)t.alternate!==null&&(n=t),t=t.sibling;n===null?e.tail=null:n.sibling=null;break;case"collapsed":n=e.tail;for(var r=null;n!==null;)n.alternate!==null&&(r=n),n=n.sibling;r===null?t||e.tail===null?e.tail=null:e.tail.sibling=null:r.sibling=null}}function je(e){var t=e.alternate!==null&&e.alternate.child===e.child,n=0,r=0;if(t)for(var l=e.child;l!==null;)n|=l.lanes|l.childLanes,r|=l.subtreeFlags&14680064,r|=l.flags&14680064,l.return=e,l=l.sibling;else for(l=e.child;l!==null;)n|=l.lanes|l.childLanes,r|=l.subtreeFlags,r|=l.flags,l.return=e,l=l.sibling;return e.subtreeFlags|=r,e.childLanes=n,t}function df(e,t,n){var r=t.pendingProps;switch(_u(t),t.tag){case 2:case 16:case 15:case 0:case 11:case 7:case 8:case 12:case 9:case 14:return je(t),null;case 1:return Ve(t.type)&&Wr(),je(t),null;case 3:return r=t.stateNode,Nn(),ue(He),ue(Re),Iu(),r.pendingContext&&(r.context=r.pendingContext,r.pendingContext=null),(e===null||e.child===null)&&(Zr(t)?t.flags|=4:e===null||e.memoizedState.isDehydrated&&(t.flags&256)===0||(t.flags|=1024,ct!==null&&(pi(ct),ct=null))),ni(e,t),je(t),null;case 5:Du(t);var l=en(or.current);if(n=t.type,e!==null&&t.stateNode!=null)qs(e,t,n,r,l),e.ref!==t.ref&&(t.flags|=512,t.flags|=2097152);else{if(!r){if(t.stateNode===null)throw Error(m(166));return je(t),null}if(e=en(gt.current),Zr(t)){r=t.stateNode,n=t.type;var u=t.memoizedProps;switch(r[yt]=t,r[nr]=u,e=(t.mode&1)!==0,n){case"dialog":le("cancel",r),le("close",r);break;case"iframe":case"object":case"embed":le("load",r);break;case"video":case"audio":for(l=0;l<bn.length;l++)le(bn[l],r);break;case"source":le("error",r);break;case"img":case"image":case"link":le("error",r),le("load",r);break;case"details":le("toggle",r);break;case"input":ji(r,u),le("invalid",r);break;case"select":r._wrapperState={wasMultiple:!!u.multiple},le("invalid",r);break;case"textarea":Di(r,u),le("invalid",r)}Fl(n,u),l=null;for(var i in u)if(u.hasOwnProperty(i)){var o=u[i];i==="children"?typeof o=="string"?r.textContent!==o&&(u.suppressHydrationWarning!==!0&&Vr(r.textContent,o,e),l=["children",o]):typeof 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r.is=="string"?e=i.createElement(n,{is:r.is}):(e=i.createElement(n),n==="select"&&(i=e,r.multiple?i.multiple=!0:r.size&&(i.size=r.size))):e=i.createElementNS(e,n),e[yt]=t,e[nr]=r,Js(e,t,!1,!1),t.stateNode=e;e:{switch(i=Il(n,r),n){case"dialog":le("cancel",e),le("close",e),l=r;break;case"iframe":case"object":case"embed":le("load",e),l=r;break;case"video":case"audio":for(l=0;l<bn.length;l++)le(bn[l],e);l=r;break;case"source":le("error",e),l=r;break;case"img":case"image":case"link":le("error",e),le("load",e),l=r;break;case"details":le("toggle",e),l=r;break;case"input":ji(e,r),l=Ll(e,r),le("invalid",e);break;case"option":l=r;break;case"select":e._wrapperState={wasMultiple:!!r.multiple},l=_({},r,{value:void 0}),le("invalid",e);break;case"textarea":Di(e,r),l=Ml(e,r),le("invalid",e);break;default:l=r}Fl(n,l),o=l;for(u in o)if(o.hasOwnProperty(u)){var s=o[u];u==="style"?Hi(e,s):u==="dangerouslySetInnerHTML"?(s=s?s.__html:void 0,s!=null&&Ai(e,s)):u==="children"?typeof 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Error(m(166));if(n=en(or.current),en(gt.current),Zr(t)){if(r=t.stateNode,n=t.memoizedProps,r[yt]=t,(u=r.nodeValue!==n)&&(e=Je,e!==null))switch(e.tag){case 3:Vr(r.nodeValue,n,(e.mode&1)!==0);break;case 5:e.memoizedProps.suppressHydrationWarning!==!0&&Vr(r.nodeValue,n,(e.mode&1)!==0)}u&&(t.flags|=4)}else r=(n.nodeType===9?n:n.ownerDocument).createTextNode(r),r[yt]=t,t.stateNode=r}return je(t),null;case 13:if(ue(ae),r=t.memoizedState,e===null||e.memoizedState!==null&&e.memoizedState.dehydrated!==null){if(se&&qe!==null&&(t.mode&1)!==0&&(t.flags&128)===0)ns(),xn(),t.flags|=98560,u=!1;else if(u=Zr(t),r!==null&&r.dehydrated!==null){if(e===null){if(!u)throw Error(m(318));if(u=t.memoizedState,u=u!==null?u.dehydrated:null,!u)throw Error(m(317));u[yt]=t}else xn(),(t.flags&128)===0&&(t.memoizedState=null),t.flags|=4;je(t),u=!1}else ct!==null&&(pi(ct),ct=null),u=!0;if(!u)return t.flags&65536?t:null}return(t.flags&128)!==0?(t.lanes=n,t):(r=r!==null,r!==(e!==null&&e.memoizedState!==null)&&r&&(t.child.flags|=8192,(t.mode&1)!==0&&(e===null||(ae.current&1)!==0?Se===0&&(Se=3):vi())),t.updateQueue!==null&&(t.flags|=4),je(t),null);case 4:return Nn(),ni(e,t),e===null&&er(t.stateNode.containerInfo),je(t),null;case 10:return Ru(t.type._context),je(t),null;case 17:return Ve(t.type)&&Wr(),je(t),null;case 19:if(ue(ae),u=t.memoizedState,u===null)return je(t),null;if(r=(t.flags&128)!==0,i=u.rendering,i===null)if(r)dr(u,!1);else{if(Se!==0||e!==null&&(e.flags&128)!==0)for(e=t.child;e!==null;){if(i=nl(e),i!==null){for(t.flags|=128,dr(u,!1),r=i.updateQueue,r!==null&&(t.updateQueue=r,t.flags|=4),t.subtreeFlags=0,r=n,n=t.child;n!==null;)u=n,e=r,u.flags&=14680066,i=u.alternate,i===null?(u.childLanes=0,u.lanes=e,u.child=null,u.subtreeFlags=0,u.memoizedProps=null,u.memoizedState=null,u.updateQueue=null,u.dependencies=null,u.stateNode=null):(u.childLanes=i.childLanes,u.lanes=i.lanes,u.child=i.child,u.subtreeFlags=0,u.deletions=null,u.memoizedProps=i.memoizedProps,u.memoizedState=i.memoizedState,u.updateQueue=i.updateQueue,u.type=i.type,e=i.dependencies,u.dependencies=e===null?null:{lanes:e.lanes,firstContext:e.firstContext}),n=n.sibling;return re(ae,ae.current&1|2),t.child}e=e.sibling}u.tail!==null&&me()>Ln&&(t.flags|=128,r=!0,dr(u,!1),t.lanes=4194304)}else{if(!r)if(e=nl(i),e!==null){if(t.flags|=128,r=!0,n=e.updateQueue,n!==null&&(t.updateQueue=n,t.flags|=4),dr(u,!0),u.tail===null&&u.tailMode==="hidden"&&!i.alternate&&!se)return je(t),null}else 2*me()-u.renderingStartTime>Ln&&n!==1073741824&&(t.flags|=128,r=!0,dr(u,!1),t.lanes=4194304);u.isBackwards?(i.sibling=t.child,t.child=i):(n=u.last,n!==null?n.sibling=i:t.child=i,u.last=i)}return u.tail!==null?(t=u.tail,u.rendering=t,u.tail=t.sibling,u.renderingStartTime=me(),t.sibling=null,n=ae.current,re(ae,r?n&1|2:n&1),t):(je(t),null);case 22:case 23:return hi(),r=t.memoizedState!==null,e!==null&&e.memoizedState!==null!==r&&(t.flags|=8192),r&&(t.mode&1)!==0?(be&1073741824)!==0&&(je(t),t.subtreeFlags&6&&(t.flags|=8192)):je(t),null;case 24:return null;case 25:return null}throw Error(m(156,t.tag))}function pf(e,t){switch(_u(t),t.tag){case 1:return 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+${te}`}}function Kf(S,N,m){var Z=this,L=ge.useRef(null),M=ge.useRef(0),D=ge.useRef(null),H=ge.useRef([]),I=ge.useRef(),b=ge.useRef(),te=ge.useRef(S),V=ge.useRef(!0);te.current=S;var X=typeof window<"u",G=!N&&N!==0&&X;if(typeof S!="function")throw new TypeError("Expected a function");N=+N||0;var Me=!!(m=m||{}).leading,ee=!("trailing"in m)||!!m.trailing,$="maxWait"in m,et="debounceOnServer"in m&&!!m.debounceOnServer,Ae=$?Math.max(+m.maxWait||0,N):null;ge.useEffect(function(){return V.current=!0,function(){V.current=!1}},[]);var Ye=ge.useMemo(function(){var ve=function(ie){var pe=H.current,De=I.current;return H.current=I.current=null,M.current=ie,b.current=te.current.apply(De,pe)},ze=function(ie,pe){G&&cancelAnimationFrame(D.current),D.current=G?requestAnimationFrame(ie):setTimeout(ie,pe)},ke=function(ie){if(!V.current)return!1;var pe=ie-L.current;return!L.current||pe>=N||pe<0||$&&ie-M.current>=Ae},Ce=function(ie){return D.current=null,ee&&H.current?ve(ie):(H.current=I.current=null,b.current)},Te=function ie(){var pe=Date.now();if(ke(pe))return Ce(pe);if(V.current){var De=N-(pe-L.current),Fe=$?Math.min(De,Ae-(pe-M.current)):De;ze(ie,Fe)}},Xe=function(){if(X||et){var ie=Date.now(),pe=ke(ie);if(H.current=[].slice.call(arguments),I.current=Z,L.current=ie,pe){if(!D.current&&V.current)return M.current=L.current,ze(Te,N),Me?ve(L.current):b.current;if($)return ze(Te,N),ve(L.current)}return D.current||ze(Te,N),b.current}};return Xe.cancel=function(){D.current&&(G?cancelAnimationFrame(D.current):clearTimeout(D.current)),M.current=0,H.current=L.current=I.current=D.current=null},Xe.isPending=function(){return!!D.current},Xe.flush=function(){return D.current?Ce(Date.now()):b.current},Xe},[Me,$,N,Ae,ee,G,X,et]);return Ye}function Yf(S,N){return S===N}function Fa(S,N,m){var Z=Yf,L=ge.useRef(S),M=ge.useState({})[1],D=Kf(ge.useCallback(function(I){L.current=I,M({})},[M]),N,m),H=ge.useRef(S);return Z(H.current,S)||(D(S),H.current=S),[L.current,D]}function Xf({quiz:S}){const[N,m]=ge.useState("123"),[Z]=Fa(N,1e3),[L,M]=ge.useState(""),[D,H]=ge.useState(!0),I=b=>{m(b.target.value)};return ge.useEffect(()=>{if(Z===""){M("<empty>");return}H(!0),M("");const b=`
+      function f($x) {
+        return ${S.func}($x);
+      }
+      try {
+        var_dump(f(${Z}));
+      } catch (\\Throwable $e) {
+        echo $e->getMessage(), PHP_EOL;
+      }
+    `;Wf(b).then(te=>{const V=te.stdout+te.stderr;M(V.replaceAll(S.func,"<answer is masked>")),H(!1)})},[Z,S.func]),F.jsxs("div",{children:[F.jsxs("code",{children:["f(",F.jsx("input",{type:"text",value:N,onChange:I}),")"]}),"は ",F.jsx("code",{children:D?"running...":L})," を返す。"]})}const Da="your_answer";function Gf({quiz:S}){const[N,m]=ge.useState(Da),[Z]=Fa(N,500),L=Z!==Da,M=Z===S.func,D=H=>{m(H.target.value)};return F.jsxs("div",{children:["この関数は？",F.jsx("input",{type:"text",value:N,onChange:D}),F.jsx("p",{children:L&&(M?`正解！${S.message}`:"不正解")})]})}function Zf({quiz:S}){return F.jsxs("section",{children:[F.jsx("h3",{children:S.label}),F.jsx(Xf,{quiz:S}),F.jsx(Gf,{quiz:S})]})}function Jf({quizGroup:S}){return F.jsxs("section",{children:[F.jsx("h2",{children:S.label}),S.quizzes.map(N=>F.jsx(Zf,{quiz:N},N.label))]})}function qf({quizGroups:S}){return F.jsxs("table",{id:"layout",children:[F.jsx("tr",{children:F.jsx("td",{id:"header",colSpan:2,className:"marquee",children:F.jsx("span",{children:"PHPerKaigi 2025 デジタルサーカス株式会社トークン問題"})})}),F.jsxs("tr",{children:[F.jsxs("td",{id:"sidebar",children:[F.jsx("h2",{children:"メニュー"}),F.jsxs("ul",{children:[F.jsx("li",{children:F.jsx("a",{href:"",children:"ホーム"})}),F.jsx("li",{children:F.jsx("a",{href:"https://github.com/nsfisis/PHPerKaigi2024-tokens",target:"_blank",children:"トークン問題2024"})}),F.jsx("li",{children:F.jsx("a",{href:"https://github.com/nsfisis/PHPerKaigi2023-tokens",target:"_blank",children:"トークン問題2023"})}),F.jsx("li",{children:F.jsx("a",{href:"https://github.com/nsfisis/PHPerKaigi2022-tokens",target:"_blank",children:"トークン問題2022"})}),F.jsx("li",{className:"hidden",children:"ここにトークンはないよ"})]})]}),F.jsx("td",{id:"content",children:F.jsxs("main",{children:[F.jsxs("p",{children:["PHPerKaigi 2025 の PHPer チャレンジ企画において、",F.jsx("a",{href:"https://www.dgcircus.com/",children:"デジタルサーカス株式会社"}),"から出題するトークン問題です (作問"," ",F.jsx("a",{href:"https://x.com/nsfisis",children:"@nsfisis"}),")。"]}),F.jsx("p",{children:"それぞれの問題に、PHP の標準関数がひとつ設定されています。 好きな引数を渡すと実行されます。その実行結果を見て、何の関数かを当ててください。"}),S.map(N=>F.jsx(Jf,{quizGroup:N},N.label))]})})]})]})}const bf=[{label:"チュートリアル",quizzes:[{label:"Q1",func:"abs",message:"トークン1文字目「#」"}]},{label:"かんたん",quizzes:[{label:"Q2",func:"strlen",message:"トークン2文字目「W」"},{label:"Q3",func:"gettype",message:"トークン3文字目「E」"},{label:"Q4",func:"count",message:"トークン4文字目「❤」"}]},{label:"ふつう",quizzes:[{label:"Q5",func:"md5",message:"トークン5文字目「P」"},{label:"Q6",func:"strtoupper",message:"トークン6文字目「H」"},{label:"Q7",func:"array_keys",message:"トークン7文字目「P」。トークンはこれでおわり"}]},{label:"むずかしい",quizzes:[{label:"Q8",func:"str_rot13",message:"すごい！"},{label:"Q9",func:"metaphone",message:"すごい！"},{label:"Q10",func:"array_change_key_case",message:"すごい！"}]}];Vf.createRoot(document.getElementById("root")).render(F.jsx(ge.StrictMode,{children:F.jsx(qf,{quizGroups:bf})}));
diff --git a/docs/assets/php-wasm-bridge-BCntMcWX.js b/docs/assets/php-wasm-bridge-BCntMcWX.js
new file mode 100644
index 0000000..fbf574b
--- /dev/null
+++ b/docs/assets/php-wasm-bridge-BCntMcWX.js
@@ -0,0 +1,8366 @@
+var Module = (() => {
+	var _scriptName = import.meta.url;
+
+	return function (moduleArg = {}) {
+		var moduleRtn;
+
+		// include: shell.js
+		// The Module object: Our interface to the outside world. We import
+		// and export values on it. There are various ways Module can be used:
+		// 1. Not defined. We create it here
+		// 2. A function parameter, function(moduleArg) => Promise<Module>
+		// 3. pre-run appended it, var Module = {}; ..generated code..
+		// 4. External script tag defines var Module.
+		// We need to check if Module already exists (e.g. case 3 above).
+		// Substitution will be replaced with actual code on later stage of the build,
+		// this way Closure Compiler will not mangle it (e.g. case 4. above).
+		// Note that if you want to run closure, and also to use Module
+		// after the generated code, you will need to define   var Module = {};
+		// before the code. Then that object will be used in the code, and you
+		// can continue to use Module afterwards as well.
+		var Module = moduleArg;
+
+		// Set up the promise that indicates the Module is initialized
+		var readyPromiseResolve, readyPromiseReject;
+		var readyPromise = new Promise((resolve, reject) => {
+			readyPromiseResolve = resolve;
+			readyPromiseReject = reject;
+		});
+		[
+			"_memory",
+			"_php_wasm_run",
+			"___indirect_function_table",
+			"onRuntimeInitialized",
+		].forEach((prop) => {
+			if (!Object.getOwnPropertyDescriptor(readyPromise, prop)) {
+				Object.defineProperty(readyPromise, prop, {
+					get: () =>
+						abort(
+							"You are getting " +
+								prop +
+								" on the Promise object, instead of the instance. Use .then() to get called back with the instance, see the MODULARIZE docs in src/settings.js",
+						),
+					set: () =>
+						abort(
+							"You are setting " +
+								prop +
+								" on the Promise object, instead of the instance. Use .then() to get called back with the instance, see the MODULARIZE docs in src/settings.js",
+						),
+				});
+			}
+		});
+
+		// Determine the runtime environment we are in. You can customize this by
+		// setting the ENVIRONMENT setting at compile time (see settings.js).
+
+		var ENVIRONMENT_IS_WEB = true;
+		var ENVIRONMENT_IS_WORKER = false;
+		var ENVIRONMENT_IS_NODE = false;
+		var ENVIRONMENT_IS_SHELL = false;
+
+		// --pre-jses are emitted after the Module integration code, so that they can
+		// refer to Module (if they choose; they can also define Module)
+
+		// Sometimes an existing Module object exists with properties
+		// meant to overwrite the default module functionality. Here
+		// we collect those properties and reapply _after_ we configure
+		// the current environment's defaults to avoid having to be so
+		// defensive during initialization.
+		var moduleOverrides = Object.assign({}, Module);
+
+		var arguments_ = [];
+		var thisProgram = "./this.program";
+		var quit_ = (status, toThrow) => {
+			throw toThrow;
+		};
+
+		// `/` should be present at the end if `scriptDirectory` is not empty
+		var scriptDirectory = "";
+		function locateFile(path) {
+			if (Module["locateFile"]) {
+				return Module["locateFile"](path, scriptDirectory);
+			}
+			return scriptDirectory + path;
+		}
+
+		// Hooks that are implemented differently in different runtime environments.
+		var readAsync, readBinary;
+
+		if (ENVIRONMENT_IS_SHELL) {
+			if (
+				(typeof process == "object" && typeof require === "function") ||
+				typeof window == "object" ||
+				typeof WorkerGlobalScope != "undefined"
+			)
+				throw new Error(
+					"not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)",
+				);
+		}
+
+		// Note that this includes Node.js workers when relevant (pthreads is enabled).
+		// Node.js workers are detected as a combination of ENVIRONMENT_IS_WORKER and
+		// ENVIRONMENT_IS_NODE.
+		else if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
+			if (ENVIRONMENT_IS_WORKER) {
+				// Check worker, not web, since window could be polyfilled
+				scriptDirectory = self.location.href;
+			} else if (typeof document != "undefined" && document.currentScript) {
+				// web
+				scriptDirectory = document.currentScript.src;
+			}
+			// When MODULARIZE, this JS may be executed later, after document.currentScript
+			// is gone, so we saved it, and we use it here instead of any other info.
+			if (_scriptName) {
+				scriptDirectory = _scriptName;
+			}
+			// blob urls look like blob:http://site.com/etc/etc and we cannot infer anything from them.
+			// otherwise, slice off the final part of the url to find the script directory.
+			// if scriptDirectory does not contain a slash, lastIndexOf will return -1,
+			// and scriptDirectory will correctly be replaced with an empty string.
+			// If scriptDirectory contains a query (starting with ?) or a fragment (starting with #),
+			// they are removed because they could contain a slash.
+			if (scriptDirectory.startsWith("blob:")) {
+				scriptDirectory = "";
+			} else {
+				scriptDirectory = scriptDirectory.substr(
+					0,
+					scriptDirectory.replace(/[?#].*/, "").lastIndexOf("/") + 1,
+				);
+			}
+
+			if (
+				!(typeof window == "object" || typeof WorkerGlobalScope != "undefined")
+			)
+				throw new Error(
+					"not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)",
+				);
+
+			{
+				// include: web_or_worker_shell_read.js
+				readAsync = async (url) => {
+					assert(!isFileURI(url), "readAsync does not work with file:// URLs");
+					var response = await fetch(url, { credentials: "same-origin" });
+					if (response.ok) {
+						return response.arrayBuffer();
+					}
+					throw new Error(response.status + " : " + response.url);
+				};
+				// end include: web_or_worker_shell_read.js
+			}
+		} else {
+			throw new Error("environment detection error");
+		}
+
+		var out = Module["print"] || console.log.bind(console);
+		var err = Module["printErr"] || console.error.bind(console);
+
+		// Merge back in the overrides
+		Object.assign(Module, moduleOverrides);
+		// Free the object hierarchy contained in the overrides, this lets the GC
+		// reclaim data used.
+		moduleOverrides = null;
+		checkIncomingModuleAPI();
+
+		// Emit code to handle expected values on the Module object. This applies Module.x
+		// to the proper local x. This has two benefits: first, we only emit it if it is
+		// expected to arrive, and second, by using a local everywhere else that can be
+		// minified.
+
+		if (Module["arguments"]) arguments_ = Module["arguments"];
+		legacyModuleProp("arguments", "arguments_");
+
+		if (Module["thisProgram"]) thisProgram = Module["thisProgram"];
+		legacyModuleProp("thisProgram", "thisProgram");
+
+		// perform assertions in shell.js after we set up out() and err(), as otherwise if an assertion fails it cannot print the message
+		// Assertions on removed incoming Module JS APIs.
+		assert(
+			typeof Module["memoryInitializerPrefixURL"] == "undefined",
+			"Module.memoryInitializerPrefixURL option was removed, use Module.locateFile instead",
+		);
+		assert(
+			typeof Module["pthreadMainPrefixURL"] == "undefined",
+			"Module.pthreadMainPrefixURL option was removed, use Module.locateFile instead",
+		);
+		assert(
+			typeof Module["cdInitializerPrefixURL"] == "undefined",
+			"Module.cdInitializerPrefixURL option was removed, use Module.locateFile instead",
+		);
+		assert(
+			typeof Module["filePackagePrefixURL"] == "undefined",
+			"Module.filePackagePrefixURL option was removed, use Module.locateFile instead",
+		);
+		assert(
+			typeof Module["read"] == "undefined",
+			"Module.read option was removed",
+		);
+		assert(
+			typeof Module["readAsync"] == "undefined",
+			"Module.readAsync option was removed (modify readAsync in JS)",
+		);
+		assert(
+			typeof Module["readBinary"] == "undefined",
+			"Module.readBinary option was removed (modify readBinary in JS)",
+		);
+		assert(
+			typeof Module["setWindowTitle"] == "undefined",
+			"Module.setWindowTitle option was removed (modify emscripten_set_window_title in JS)",
+		);
+		assert(
+			typeof Module["TOTAL_MEMORY"] == "undefined",
+			"Module.TOTAL_MEMORY has been renamed Module.INITIAL_MEMORY",
+		);
+		legacyModuleProp("asm", "wasmExports");
+		legacyModuleProp("readAsync", "readAsync");
+		legacyModuleProp("readBinary", "readBinary");
+		legacyModuleProp("setWindowTitle", "setWindowTitle");
+		var IDBFS = "IDBFS is no longer included by default; build with -lidbfs.js";
+		var PROXYFS =
+			"PROXYFS is no longer included by default; build with -lproxyfs.js";
+		var WORKERFS =
+			"WORKERFS is no longer included by default; build with -lworkerfs.js";
+		var FETCHFS =
+			"FETCHFS is no longer included by default; build with -lfetchfs.js";
+		var ICASEFS =
+			"ICASEFS is no longer included by default; build with -licasefs.js";
+		var JSFILEFS =
+			"JSFILEFS is no longer included by default; build with -ljsfilefs.js";
+		var OPFS = "OPFS is no longer included by default; build with -lopfs.js";
+
+		var NODEFS =
+			"NODEFS is no longer included by default; build with -lnodefs.js";
+
+		assert(
+			!ENVIRONMENT_IS_WORKER,
+			"worker environment detected but not enabled at build time.  Add `worker` to `-sENVIRONMENT` to enable.",
+		);
+
+		assert(
+			!ENVIRONMENT_IS_NODE,
+			"node environment detected but not enabled at build time.  Add `node` to `-sENVIRONMENT` to enable.",
+		);
+
+		assert(
+			!ENVIRONMENT_IS_SHELL,
+			"shell environment detected but not enabled at build time.  Add `shell` to `-sENVIRONMENT` to enable.",
+		);
+
+		// end include: shell.js
+
+		// include: preamble.js
+		// === Preamble library stuff ===
+
+		// Documentation for the public APIs defined in this file must be updated in:
+		//    site/source/docs/api_reference/preamble.js.rst
+		// A prebuilt local version of the documentation is available at:
+		//    site/build/text/docs/api_reference/preamble.js.txt
+		// You can also build docs locally as HTML or other formats in site/
+		// An online HTML version (which may be of a different version of Emscripten)
+		//    is up at http://kripken.github.io/emscripten-site/docs/api_reference/preamble.js.html
+
+		var wasmBinary = Module["wasmBinary"];
+		legacyModuleProp("wasmBinary", "wasmBinary");
+
+		if (typeof WebAssembly != "object") {
+			err("no native wasm support detected");
+		}
+
+		// Wasm globals
+
+		var wasmMemory;
+
+		//========================================
+		// Runtime essentials
+		//========================================
+
+		// whether we are quitting the application. no code should run after this.
+		// set in exit() and abort()
+		var ABORT = false;
+
+		// set by exit() and abort().  Passed to 'onExit' handler.
+		// NOTE: This is also used as the process return code code in shell environments
+		// but only when noExitRuntime is false.
+		var EXITSTATUS;
+
+		// In STRICT mode, we only define assert() when ASSERTIONS is set.  i.e. we
+		// don't define it at all in release modes.  This matches the behaviour of
+		// MINIMAL_RUNTIME.
+		// TODO(sbc): Make this the default even without STRICT enabled.
+		/** @type {function(*, string=)} */
+		function assert(condition, text) {
+			if (!condition) {
+				abort("Assertion failed" + (text ? ": " + text : ""));
+			}
+		}
+
+		// We used to include malloc/free by default in the past. Show a helpful error in
+		// builds with assertions.
+		function _free() {
+			// Show a helpful error since we used to include free by default in the past.
+			abort(
+				"free() called but not included in the build - add `_free` to EXPORTED_FUNCTIONS",
+			);
+		}
+
+		// Memory management
+
+		var HEAP,
+			/** @type {!Int8Array} */
+			HEAP8,
+			/** @type {!Uint8Array} */
+			HEAPU8,
+			/** @type {!Int16Array} */
+			HEAP16,
+			/** @type {!Uint16Array} */
+			HEAPU16,
+			/** @type {!Int32Array} */
+			HEAP32,
+			/** @type {!Uint32Array} */
+			HEAPU32,
+			/** @type {!Float32Array} */
+			HEAPF32,
+			/** @type {!Float64Array} */
+			HEAPF64;
+
+		// include: runtime_shared.js
+		function updateMemoryViews() {
+			var b = wasmMemory.buffer;
+			Module["HEAP8"] = HEAP8 = new Int8Array(b);
+			Module["HEAP16"] = HEAP16 = new Int16Array(b);
+			Module["HEAPU8"] = HEAPU8 = new Uint8Array(b);
+			Module["HEAPU16"] = HEAPU16 = new Uint16Array(b);
+			Module["HEAP32"] = HEAP32 = new Int32Array(b);
+			Module["HEAPU32"] = HEAPU32 = new Uint32Array(b);
+			Module["HEAPF32"] = HEAPF32 = new Float32Array(b);
+			Module["HEAPF64"] = HEAPF64 = new Float64Array(b);
+		}
+
+		// end include: runtime_shared.js
+		assert(
+			!Module["STACK_SIZE"],
+			"STACK_SIZE can no longer be set at runtime.  Use -sSTACK_SIZE at link time",
+		);
+
+		assert(
+			typeof Int32Array != "undefined" &&
+				typeof Float64Array !== "undefined" &&
+				Int32Array.prototype.subarray != undefined &&
+				Int32Array.prototype.set != undefined,
+			"JS engine does not provide full typed array support",
+		);
+
+		// If memory is defined in wasm, the user can't provide it, or set INITIAL_MEMORY
+		assert(
+			!Module["wasmMemory"],
+			"Use of `wasmMemory` detected.  Use -sIMPORTED_MEMORY to define wasmMemory externally",
+		);
+		assert(
+			!Module["INITIAL_MEMORY"],
+			"Detected runtime INITIAL_MEMORY setting.  Use -sIMPORTED_MEMORY to define wasmMemory dynamically",
+		);
+
+		// include: runtime_stack_check.js
+		// Initializes the stack cookie. Called at the startup of main and at the startup of each thread in pthreads mode.
+		function writeStackCookie() {
+			var max = _emscripten_stack_get_end();
+			assert((max & 3) == 0);
+			// If the stack ends at address zero we write our cookies 4 bytes into the
+			// stack.  This prevents interference with SAFE_HEAP and ASAN which also
+			// monitor writes to address zero.
+			if (max == 0) {
+				max += 4;
+			}
+			// The stack grow downwards towards _emscripten_stack_get_end.
+			// We write cookies to the final two words in the stack and detect if they are
+			// ever overwritten.
+			HEAPU32[max >> 2] = 0x02135467;
+			HEAPU32[(max + 4) >> 2] = 0x89bacdfe;
+			// Also test the global address 0 for integrity.
+			HEAPU32[0 >> 2] = 1668509029;
+		}
+
+		function checkStackCookie() {
+			if (ABORT) return;
+			var max = _emscripten_stack_get_end();
+			// See writeStackCookie().
+			if (max == 0) {
+				max += 4;
+			}
+			var cookie1 = HEAPU32[max >> 2];
+			var cookie2 = HEAPU32[(max + 4) >> 2];
+			if (cookie1 != 0x02135467 || cookie2 != 0x89bacdfe) {
+				abort(
+					`Stack overflow! Stack cookie has been overwritten at ${ptrToString(max)}, expected hex dwords 0x89BACDFE and 0x2135467, but received ${ptrToString(cookie2)} ${ptrToString(cookie1)}`,
+				);
+			}
+			// Also test the global address 0 for integrity.
+			if (HEAPU32[0 >> 2] != 0x63736d65 /* 'emsc' */) {
+				abort(
+					"Runtime error: The application has corrupted its heap memory area (address zero)!",
+				);
+			}
+		}
+		// end include: runtime_stack_check.js
+		var __ATPRERUN__ = []; // functions called before the runtime is initialized
+		var __ATINIT__ = []; // functions called during startup
+		var __ATEXIT__ = []; // functions called during shutdown
+		var __ATPOSTRUN__ = []; // functions called after the main() is called
+
+		var runtimeInitialized = false;
+
+		function preRun() {
+			if (Module["preRun"]) {
+				if (typeof Module["preRun"] == "function")
+					Module["preRun"] = [Module["preRun"]];
+				while (Module["preRun"].length) {
+					addOnPreRun(Module["preRun"].shift());
+				}
+			}
+			callRuntimeCallbacks(__ATPRERUN__);
+		}
+
+		function initRuntime() {
+			assert(!runtimeInitialized);
+			runtimeInitialized = true;
+
+			checkStackCookie();
+
+			if (!Module["noFSInit"] && !FS.initialized) FS.init();
+			FS.ignorePermissions = false;
+
+			TTY.init();
+			SOCKFS.root = FS.mount(SOCKFS, {}, null);
+			PIPEFS.root = FS.mount(PIPEFS, {}, null);
+			callRuntimeCallbacks(__ATINIT__);
+		}
+
+		function postRun() {
+			checkStackCookie();
+
+			if (Module["postRun"]) {
+				if (typeof Module["postRun"] == "function")
+					Module["postRun"] = [Module["postRun"]];
+				while (Module["postRun"].length) {
+					addOnPostRun(Module["postRun"].shift());
+				}
+			}
+
+			callRuntimeCallbacks(__ATPOSTRUN__);
+		}
+
+		function addOnPreRun(cb) {
+			__ATPRERUN__.unshift(cb);
+		}
+
+		function addOnInit(cb) {
+			__ATINIT__.unshift(cb);
+		}
+
+		function addOnExit(cb) {}
+
+		function addOnPostRun(cb) {
+			__ATPOSTRUN__.unshift(cb);
+		}
+
+		// include: runtime_math.js
+		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/imul
+
+		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/fround
+
+		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32
+
+		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc
+
+		assert(
+			Math.imul,
+			"This browser does not support Math.imul(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill",
+		);
+		assert(
+			Math.fround,
+			"This browser does not support Math.fround(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill",
+		);
+		assert(
+			Math.clz32,
+			"This browser does not support Math.clz32(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill",
+		);
+		assert(
+			Math.trunc,
+			"This browser does not support Math.trunc(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill",
+		);
+		// end include: runtime_math.js
+		// A counter of dependencies for calling run(). If we need to
+		// do asynchronous work before running, increment this and
+		// decrement it. Incrementing must happen in a place like
+		// Module.preRun (used by emcc to add file preloading).
+		// Note that you can add dependencies in preRun, even though
+		// it happens right before run - run will be postponed until
+		// the dependencies are met.
+		var runDependencies = 0;
+		var dependenciesFulfilled = null; // overridden to take different actions when all run dependencies are fulfilled
+		var runDependencyTracking = {};
+		var runDependencyWatcher = null;
+
+		function getUniqueRunDependency(id) {
+			var orig = id;
+			while (1) {
+				if (!runDependencyTracking[id]) return id;
+				id = orig + Math.random();
+			}
+		}
+
+		function addRunDependency(id) {
+			runDependencies++;
+
+			Module["monitorRunDependencies"]?.(runDependencies);
+
+			if (id) {
+				assert(!runDependencyTracking[id]);
+				runDependencyTracking[id] = 1;
+				if (
+					runDependencyWatcher === null &&
+					typeof setInterval != "undefined"
+				) {
+					// Check for missing dependencies every few seconds
+					runDependencyWatcher = setInterval(() => {
+						if (ABORT) {
+							clearInterval(runDependencyWatcher);
+							runDependencyWatcher = null;
+							return;
+						}
+						var shown = false;
+						for (var dep in runDependencyTracking) {
+							if (!shown) {
+								shown = true;
+								err("still waiting on run dependencies:");
+							}
+							err(`dependency: ${dep}`);
+						}
+						if (shown) {
+							err("(end of list)");
+						}
+					}, 10000);
+				}
+			} else {
+				err("warning: run dependency added without ID");
+			}
+		}
+
+		function removeRunDependency(id) {
+			runDependencies--;
+
+			Module["monitorRunDependencies"]?.(runDependencies);
+
+			if (id) {
+				assert(runDependencyTracking[id]);
+				delete runDependencyTracking[id];
+			} else {
+				err("warning: run dependency removed without ID");
+			}
+			if (runDependencies == 0) {
+				if (runDependencyWatcher !== null) {
+					clearInterval(runDependencyWatcher);
+					runDependencyWatcher = null;
+				}
+				if (dependenciesFulfilled) {
+					var callback = dependenciesFulfilled;
+					dependenciesFulfilled = null;
+					callback(); // can add another dependenciesFulfilled
+				}
+			}
+		}
+
+		/** @param {string|number=} what */
+		function abort(what) {
+			Module["onAbort"]?.(what);
+
+			what = "Aborted(" + what + ")";
+			// TODO(sbc): Should we remove printing and leave it up to whoever
+			// catches the exception?
+			err(what);
+
+			ABORT = true;
+
+			// Use a wasm runtime error, because a JS error might be seen as a foreign
+			// exception, which means we'd run destructors on it. We need the error to
+			// simply make the program stop.
+			// FIXME This approach does not work in Wasm EH because it currently does not assume
+			// all RuntimeErrors are from traps; it decides whether a RuntimeError is from
+			// a trap or not based on a hidden field within the object. So at the moment
+			// we don't have a way of throwing a wasm trap from JS. TODO Make a JS API that
+			// allows this in the wasm spec.
+
+			// Suppress closure compiler warning here. Closure compiler's builtin extern
+			// definition for WebAssembly.RuntimeError claims it takes no arguments even
+			// though it can.
+			// TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure gets fixed.
+			/** @suppress {checkTypes} */
+			var e = new WebAssembly.RuntimeError(what);
+
+			readyPromiseReject(e);
+			// Throw the error whether or not MODULARIZE is set because abort is used
+			// in code paths apart from instantiation where an exception is expected
+			// to be thrown when abort is called.
+			throw e;
+		}
+
+		// include: memoryprofiler.js
+		// end include: memoryprofiler.js
+		// include: URIUtils.js
+		// Prefix of data URIs emitted by SINGLE_FILE and related options.
+		var dataURIPrefix = "data:application/octet-stream;base64,";
+
+		/**
+		 * Indicates whether filename is a base64 data URI.
+		 * @noinline
+		 */
+		var isDataURI = (filename) => filename.startsWith(dataURIPrefix);
+
+		/**
+		 * Indicates whether filename is delivered via file protocol (as opposed to http/https)
+		 * @noinline
+		 */
+		var isFileURI = (filename) => filename.startsWith("file://");
+		// end include: URIUtils.js
+		function createExportWrapper(name, nargs) {
+			return (...args) => {
+				assert(
+					runtimeInitialized,
+					`native function \`${name}\` called before runtime initialization`,
+				);
+				var f = wasmExports[name];
+				assert(f, `exported native function \`${name}\` not found`);
+				// Only assert for too many arguments. Too few can be valid since the missing arguments will be zero filled.
+				assert(
+					args.length <= nargs,
+					`native function \`${name}\` called with ${args.length} args but expects ${nargs}`,
+				);
+				return f(...args);
+			};
+		}
+
+		// include: runtime_exceptions.js
+		// end include: runtime_exceptions.js
+		function findWasmBinary() {
+			if (Module["locateFile"]) {
+				var f = "php-wasm.wasm";
+				if (!isDataURI(f)) {
+					return locateFile(f);
+				}
+				return f;
+			}
+			// Use bundler-friendly `new URL(..., import.meta.url)` pattern; works in browsers too.
+			return new URL("php-wasm.wasm", import.meta.url).href;
+		}
+
+		var wasmBinaryFile;
+
+		function getBinarySync(file) {
+			if (file == wasmBinaryFile && wasmBinary) {
+				return new Uint8Array(wasmBinary);
+			}
+			if (readBinary) {
+				return readBinary(file);
+			}
+			throw "both async and sync fetching of the wasm failed";
+		}
+
+		async function getWasmBinary(binaryFile) {
+			// If we don't have the binary yet, load it asynchronously using readAsync.
+			if (!wasmBinary) {
+				// Fetch the binary using readAsync
+				try {
+					var response = await readAsync(binaryFile);
+					return new Uint8Array(response);
+				} catch {
+					// Fall back to getBinarySync below;
+				}
+			}
+
+			// Otherwise, getBinarySync should be able to get it synchronously
+			return getBinarySync(binaryFile);
+		}
+
+		async function instantiateArrayBuffer(binaryFile, imports) {
+			try {
+				var binary = await getWasmBinary(binaryFile);
+				var instance = await WebAssembly.instantiate(binary, imports);
+				return instance;
+			} catch (reason) {
+				err(`failed to asynchronously prepare wasm: ${reason}`);
+
+				// Warn on some common problems.
+				if (isFileURI(wasmBinaryFile)) {
+					err(
+						`warning: Loading from a file URI (${wasmBinaryFile}) is not supported in most browsers. See https://emscripten.org/docs/getting_started/FAQ.html#how-do-i-run-a-local-webserver-for-testing-why-does-my-program-stall-in-downloading-or-preparing`,
+					);
+				}
+				abort(reason);
+			}
+		}
+
+		async function instantiateAsync(binary, binaryFile, imports) {
+			if (
+				!binary &&
+				typeof WebAssembly.instantiateStreaming == "function" &&
+				!isDataURI(binaryFile) &&
+				typeof fetch == "function"
+			) {
+				try {
+					var response = fetch(binaryFile, { credentials: "same-origin" });
+					var instantiationResult = await WebAssembly.instantiateStreaming(
+						response,
+						imports,
+					);
+					return instantiationResult;
+				} catch (reason) {
+					// We expect the most common failure cause to be a bad MIME type for the binary,
+					// in which case falling back to ArrayBuffer instantiation should work.
+					err(`wasm streaming compile failed: ${reason}`);
+					err("falling back to ArrayBuffer instantiation");
+					// fall back of instantiateArrayBuffer below
+				}
+			}
+			return instantiateArrayBuffer(binaryFile, imports);
+		}
+
+		function getWasmImports() {
+			// prepare imports
+			return {
+				env: wasmImports,
+				wasi_snapshot_preview1: wasmImports,
+			};
+		}
+
+		// Create the wasm instance.
+		// Receives the wasm imports, returns the exports.
+		async function createWasm() {
+			// Load the wasm module and create an instance of using native support in the JS engine.
+			// handle a generated wasm instance, receiving its exports and
+			// performing other necessary setup
+			/** @param {WebAssembly.Module=} module*/
+			function receiveInstance(instance, module) {
+				wasmExports = instance.exports;
+
+				wasmMemory = wasmExports["memory"];
+
+				assert(wasmMemory, "memory not found in wasm exports");
+				updateMemoryViews();
+
+				wasmTable = wasmExports["__indirect_function_table"];
+
+				assert(wasmTable, "table not found in wasm exports");
+
+				addOnInit(wasmExports["__wasm_call_ctors"]);
+
+				removeRunDependency("wasm-instantiate");
+				return wasmExports;
+			}
+			// wait for the pthread pool (if any)
+			addRunDependency("wasm-instantiate");
+
+			// Prefer streaming instantiation if available.
+			// Async compilation can be confusing when an error on the page overwrites Module
+			// (for example, if the order of elements is wrong, and the one defining Module is
+			// later), so we save Module and check it later.
+			var trueModule = Module;
+			function receiveInstantiationResult(result) {
+				// 'result' is a ResultObject object which has both the module and instance.
+				// receiveInstance() will swap in the exports (to Module.asm) so they can be called
+				assert(
+					Module === trueModule,
+					"the Module object should not be replaced during async compilation - perhaps the order of HTML elements is wrong?",
+				);
+				trueModule = null;
+				// TODO: Due to Closure regression https://github.com/google/closure-compiler/issues/3193, the above line no longer optimizes out down to the following line.
+				// When the regression is fixed, can restore the above PTHREADS-enabled path.
+				receiveInstance(result["instance"]);
+			}
+
+			var info = getWasmImports();
+
+			// User shell pages can write their own Module.instantiateWasm = function(imports, successCallback) callback
+			// to manually instantiate the Wasm module themselves. This allows pages to
+			// run the instantiation parallel to any other async startup actions they are
+			// performing.
+			// Also pthreads and wasm workers initialize the wasm instance through this
+			// path.
+			if (Module["instantiateWasm"]) {
+				try {
+					return Module["instantiateWasm"](info, receiveInstance);
+				} catch (e) {
+					err(`Module.instantiateWasm callback failed with error: ${e}`);
+					// If instantiation fails, reject the module ready promise.
+					readyPromiseReject(e);
+				}
+			}
+
+			wasmBinaryFile ??= findWasmBinary();
+
+			try {
+				var result = await instantiateAsync(wasmBinary, wasmBinaryFile, info);
+				receiveInstantiationResult(result);
+				return result;
+			} catch (e) {
+				// If instantiation fails, reject the module ready promise.
+				readyPromiseReject(e);
+				return;
+			}
+		}
+
+		// Globals used by JS i64 conversions (see makeSetValue)
+		var tempDouble;
+		var tempI64;
+
+		// include: runtime_debug.js
+		// Endianness check
+		(() => {
+			var h16 = new Int16Array(1);
+			var h8 = new Int8Array(h16.buffer);
+			h16[0] = 0x6373;
+			if (h8[0] !== 0x73 || h8[1] !== 0x63)
+				throw "Runtime error: expected the system to be little-endian! (Run with -sSUPPORT_BIG_ENDIAN to bypass)";
+		})();
+
+		if (Module["ENVIRONMENT"]) {
+			throw new Error(
+				"Module.ENVIRONMENT has been deprecated. To force the environment, use the ENVIRONMENT compile-time option (for example, -sENVIRONMENT=web or -sENVIRONMENT=node)",
+			);
+		}
+
+		function legacyModuleProp(prop, newName, incoming = true) {
+			if (!Object.getOwnPropertyDescriptor(Module, prop)) {
+				Object.defineProperty(Module, prop, {
+					configurable: true,
+					get() {
+						let extra = incoming
+							? " (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)"
+							: "";
+						abort(
+							`\`Module.${prop}\` has been replaced by \`${newName}\`` + extra,
+						);
+					},
+				});
+			}
+		}
+
+		function ignoredModuleProp(prop) {
+			if (Object.getOwnPropertyDescriptor(Module, prop)) {
+				abort(
+					`\`Module.${prop}\` was supplied but \`${prop}\` not included in INCOMING_MODULE_JS_API`,
+				);
+			}
+		}
+
+		// forcing the filesystem exports a few things by default
+		function isExportedByForceFilesystem(name) {
+			return (
+				name === "FS_createPath" ||
+				name === "FS_createDataFile" ||
+				name === "FS_createPreloadedFile" ||
+				name === "FS_unlink" ||
+				name === "addRunDependency" ||
+				// The old FS has some functionality that WasmFS lacks.
+				name === "FS_createLazyFile" ||
+				name === "FS_createDevice" ||
+				name === "removeRunDependency"
+			);
+		}
+
+		/**
+		 * Intercept access to a global symbol.  This enables us to give informative
+		 * warnings/errors when folks attempt to use symbols they did not include in
+		 * their build, or no symbols that no longer exist.
+		 */
+		function hookGlobalSymbolAccess(sym, func) {
+			if (
+				typeof globalThis != "undefined" &&
+				!Object.getOwnPropertyDescriptor(globalThis, sym)
+			) {
+				Object.defineProperty(globalThis, sym, {
+					configurable: true,
+					get() {
+						func();
+						return undefined;
+					},
+				});
+			}
+		}
+
+		function missingGlobal(sym, msg) {
+			hookGlobalSymbolAccess(sym, () => {
+				warnOnce(`\`${sym}\` is not longer defined by emscripten. ${msg}`);
+			});
+		}
+
+		missingGlobal("buffer", "Please use HEAP8.buffer or wasmMemory.buffer");
+		missingGlobal("asm", "Please use wasmExports instead");
+
+		function missingLibrarySymbol(sym) {
+			hookGlobalSymbolAccess(sym, () => {
+				// Can't `abort()` here because it would break code that does runtime
+				// checks.  e.g. `if (typeof SDL === 'undefined')`.
+				var msg = `\`${sym}\` is a library symbol and not included by default; add it to your library.js __deps or to DEFAULT_LIBRARY_FUNCS_TO_INCLUDE on the command line`;
+				// DEFAULT_LIBRARY_FUNCS_TO_INCLUDE requires the name as it appears in
+				// library.js, which means $name for a JS name with no prefix, or name
+				// for a JS name like _name.
+				var librarySymbol = sym;
+				if (!librarySymbol.startsWith("_")) {
+					librarySymbol = "$" + sym;
+				}
+				msg += ` (e.g. -sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE='${librarySymbol}')`;
+				if (isExportedByForceFilesystem(sym)) {
+					msg +=
+						". Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you";
+				}
+				warnOnce(msg);
+			});
+
+			// Any symbol that is not included from the JS library is also (by definition)
+			// not exported on the Module object.
+			unexportedRuntimeSymbol(sym);
+		}
+
+		function unexportedRuntimeSymbol(sym) {
+			if (!Object.getOwnPropertyDescriptor(Module, sym)) {
+				Object.defineProperty(Module, sym, {
+					configurable: true,
+					get() {
+						var msg = `'${sym}' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the Emscripten FAQ)`;
+						if (isExportedByForceFilesystem(sym)) {
+							msg +=
+								". Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you";
+						}
+						abort(msg);
+					},
+				});
+			}
+		}
+
+		// Used by XXXXX_DEBUG settings to output debug messages.
+		function dbg(...args) {
+			// TODO(sbc): Make this configurable somehow.  Its not always convenient for
+			// logging to show up as warnings.
+			console.warn(...args);
+		}
+		// end include: runtime_debug.js
+		// === Body ===
+		// end include: preamble.js
+
+		class ExitStatus {
+			name = "ExitStatus";
+			constructor(status) {
+				this.message = `Program terminated with exit(${status})`;
+				this.status = status;
+			}
+		}
+
+		var callRuntimeCallbacks = (callbacks) => {
+			while (callbacks.length > 0) {
+				// Pass the module as the first argument.
+				callbacks.shift()(Module);
+			}
+		};
+
+		/**
+		 * @param {number} ptr
+		 * @param {string} type
+		 */
+		function getValue(ptr, type = "i8") {
+			if (type.endsWith("*")) type = "*";
+			switch (type) {
+				case "i1":
+					return HEAP8[ptr];
+				case "i8":
+					return HEAP8[ptr];
+				case "i16":
+					return HEAP16[ptr >> 1];
+				case "i32":
+					return HEAP32[ptr >> 2];
+				case "i64":
+					abort("to do getValue(i64) use WASM_BIGINT");
+				case "float":
+					return HEAPF32[ptr >> 2];
+				case "double":
+					return HEAPF64[ptr >> 3];
+				case "*":
+					return HEAPU32[ptr >> 2];
+				default:
+					abort(`invalid type for getValue: ${type}`);
+			}
+		}
+
+		var noExitRuntime = Module["noExitRuntime"] || true;
+
+		var ptrToString = (ptr) => {
+			assert(typeof ptr === "number");
+			// With CAN_ADDRESS_2GB or MEMORY64, pointers are already unsigned.
+			ptr >>>= 0;
+			return "0x" + ptr.toString(16).padStart(8, "0");
+		};
+
+		/**
+		 * @param {number} ptr
+		 * @param {number} value
+		 * @param {string} type
+		 */
+		function setValue(ptr, value, type = "i8") {
+			if (type.endsWith("*")) type = "*";
+			switch (type) {
+				case "i1":
+					HEAP8[ptr] = value;
+					break;
+				case "i8":
+					HEAP8[ptr] = value;
+					break;
+				case "i16":
+					HEAP16[ptr >> 1] = value;
+					break;
+				case "i32":
+					HEAP32[ptr >> 2] = value;
+					break;
+				case "i64":
+					abort("to do setValue(i64) use WASM_BIGINT");
+				case "float":
+					HEAPF32[ptr >> 2] = value;
+					break;
+				case "double":
+					HEAPF64[ptr >> 3] = value;
+					break;
+				case "*":
+					HEAPU32[ptr >> 2] = value;
+					break;
+				default:
+					abort(`invalid type for setValue: ${type}`);
+			}
+		}
+
+		var stackRestore = (val) => __emscripten_stack_restore(val);
+
+		var stackSave = () => _emscripten_stack_get_current();
+
+		var warnOnce = (text) => {
+			warnOnce.shown ||= {};
+			if (!warnOnce.shown[text]) {
+				warnOnce.shown[text] = 1;
+				err(text);
+			}
+		};
+
+		var UTF8Decoder =
+			typeof TextDecoder != "undefined" ? new TextDecoder() : undefined;
+
+		/**
+		 * Given a pointer 'idx' to a null-terminated UTF8-encoded string in the given
+		 * array that contains uint8 values, returns a copy of that string as a
+		 * Javascript String object.
+		 * heapOrArray is either a regular array, or a JavaScript typed array view.
+		 * @param {number=} idx
+		 * @param {number=} maxBytesToRead
+		 * @return {string}
+		 */
+		var UTF8ArrayToString = (heapOrArray, idx = 0, maxBytesToRead = NaN) => {
+			var endIdx = idx + maxBytesToRead;
+			var endPtr = idx;
+			// TextDecoder needs to know the byte length in advance, it doesn't stop on
+			// null terminator by itself.  Also, use the length info to avoid running tiny
+			// strings through TextDecoder, since .subarray() allocates garbage.
+			// (As a tiny code save trick, compare endPtr against endIdx using a negation,
+			// so that undefined/NaN means Infinity)
+			while (heapOrArray[endPtr] && !(endPtr >= endIdx)) ++endPtr;
+
+			if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
+				return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr));
+			}
+			var str = "";
+			// If building with TextDecoder, we have already computed the string length
+			// above, so test loop end condition against that
+			while (idx < endPtr) {
+				// For UTF8 byte structure, see:
+				// http://en.wikipedia.org/wiki/UTF-8#Description
+				// https://www.ietf.org/rfc/rfc2279.txt
+				// https://tools.ietf.org/html/rfc3629
+				var u0 = heapOrArray[idx++];
+				if (!(u0 & 0x80)) {
+					str += String.fromCharCode(u0);
+					continue;
+				}
+				var u1 = heapOrArray[idx++] & 63;
+				if ((u0 & 0xe0) == 0xc0) {
+					str += String.fromCharCode(((u0 & 31) << 6) | u1);
+					continue;
+				}
+				var u2 = heapOrArray[idx++] & 63;
+				if ((u0 & 0xf0) == 0xe0) {
+					u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
+				} else {
+					if ((u0 & 0xf8) != 0xf0)
+						warnOnce(
+							"Invalid UTF-8 leading byte " +
+								ptrToString(u0) +
+								" encountered when deserializing a UTF-8 string in wasm memory to a JS string!",
+						);
+					u0 =
+						((u0 & 7) << 18) |
+						(u1 << 12) |
+						(u2 << 6) |
+						(heapOrArray[idx++] & 63);
+				}
+
+				if (u0 < 0x10000) {
+					str += String.fromCharCode(u0);
+				} else {
+					var ch = u0 - 0x10000;
+					str += String.fromCharCode(
+						0xd800 | (ch >> 10),
+						0xdc00 | (ch & 0x3ff),
+					);
+				}
+			}
+			return str;
+		};
+
+		/**
+		 * Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the
+		 * emscripten HEAP, returns a copy of that string as a Javascript String object.
+		 *
+		 * @param {number} ptr
+		 * @param {number=} maxBytesToRead - An optional length that specifies the
+		 *   maximum number of bytes to read. You can omit this parameter to scan the
+		 *   string until the first 0 byte. If maxBytesToRead is passed, and the string
+		 *   at [ptr, ptr+maxBytesToReadr[ contains a null byte in the middle, then the
+		 *   string will cut short at that byte index (i.e. maxBytesToRead will not
+		 *   produce a string of exact length [ptr, ptr+maxBytesToRead[) N.B. mixing
+		 *   frequent uses of UTF8ToString() with and without maxBytesToRead may throw
+		 *   JS JIT optimizations off, so it is worth to consider consistently using one
+		 * @return {string}
+		 */
+		var UTF8ToString = (ptr, maxBytesToRead) => {
+			assert(
+				typeof ptr == "number",
+				`UTF8ToString expects a number (got ${typeof ptr})`,
+			);
+			return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : "";
+		};
+		var ___assert_fail = (condition, filename, line, func) =>
+			abort(
+				`Assertion failed: ${UTF8ToString(condition)}, at: ` +
+					[
+						filename ? UTF8ToString(filename) : "unknown filename",
+						line,
+						func ? UTF8ToString(func) : "unknown function",
+					],
+			);
+
+		var wasmTableMirror = [];
+
+		/** @type {WebAssembly.Table} */
+		var wasmTable;
+		var getWasmTableEntry = (funcPtr) => {
+			var func = wasmTableMirror[funcPtr];
+			if (!func) {
+				if (funcPtr >= wasmTableMirror.length)
+					wasmTableMirror.length = funcPtr + 1;
+				/** @suppress {checkTypes} */
+				wasmTableMirror[funcPtr] = func = wasmTable.get(funcPtr);
+			}
+			/** @suppress {checkTypes} */
+			assert(
+				wasmTable.get(funcPtr) == func,
+				"JavaScript-side Wasm function table mirror is out of date!",
+			);
+			return func;
+		};
+		var ___call_sighandler = (fp, sig) => getWasmTableEntry(fp)(sig);
+
+		var PATH = {
+			isAbs: (path) => path.charAt(0) === "/",
+			splitPath: (filename) => {
+				var splitPathRe =
+					/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
+				return splitPathRe.exec(filename).slice(1);
+			},
+			normalizeArray: (parts, allowAboveRoot) => {
+				// if the path tries to go above the root, `up` ends up > 0
+				var up = 0;
+				for (var i = parts.length - 1; i >= 0; i--) {
+					var last = parts[i];
+					if (last === ".") {
+						parts.splice(i, 1);
+					} else if (last === "..") {
+						parts.splice(i, 1);
+						up++;
+					} else if (up) {
+						parts.splice(i, 1);
+						up--;
+					}
+				}
+				// if the path is allowed to go above the root, restore leading ..s
+				if (allowAboveRoot) {
+					for (; up; up--) {
+						parts.unshift("..");
+					}
+				}
+				return parts;
+			},
+			normalize: (path) => {
+				var isAbsolute = PATH.isAbs(path),
+					trailingSlash = path.substr(-1) === "/";
+				// Normalize the path
+				path = PATH.normalizeArray(
+					path.split("/").filter((p) => !!p),
+					!isAbsolute,
+				).join("/");
+				if (!path && !isAbsolute) {
+					path = ".";
+				}
+				if (path && trailingSlash) {
+					path += "/";
+				}
+				return (isAbsolute ? "/" : "") + path;
+			},
+			dirname: (path) => {
+				var result = PATH.splitPath(path),
+					root = result[0],
+					dir = result[1];
+				if (!root && !dir) {
+					// No dirname whatsoever
+					return ".";
+				}
+				if (dir) {
+					// It has a dirname, strip trailing slash
+					dir = dir.substr(0, dir.length - 1);
+				}
+				return root + dir;
+			},
+			basename: (path) => {
+				// EMSCRIPTEN return '/'' for '/', not an empty string
+				if (path === "/") return "/";
+				path = PATH.normalize(path);
+				path = path.replace(/\/$/, "");
+				var lastSlash = path.lastIndexOf("/");
+				if (lastSlash === -1) return path;
+				return path.substr(lastSlash + 1);
+			},
+			join: (...paths) => PATH.normalize(paths.join("/")),
+			join2: (l, r) => PATH.normalize(l + "/" + r),
+		};
+
+		var initRandomFill = () => {
+			if (
+				typeof crypto == "object" &&
+				typeof crypto["getRandomValues"] == "function"
+			) {
+				// for modern web browsers
+				return (view) => crypto.getRandomValues(view);
+			}
+			// we couldn't find a proper implementation, as Math.random() is not suitable for /dev/random, see emscripten-core/emscripten/pull/7096
+			else
+				abort(
+					"no cryptographic support found for randomDevice. consider polyfilling it if you want to use something insecure like Math.random(), e.g. put this in a --pre-js: var crypto = { getRandomValues: (array) => { for (var i = 0; i < array.length; i++) array[i] = (Math.random()*256)|0 } };",
+				);
+		};
+		var randomFill = (view) => {
+			// Lazily init on the first invocation.
+			return (randomFill = initRandomFill())(view);
+		};
+
+		var PATH_FS = {
+			resolve: (...args) => {
+				var resolvedPath = "",
+					resolvedAbsolute = false;
+				for (var i = args.length - 1; i >= -1 && !resolvedAbsolute; i--) {
+					var path = i >= 0 ? args[i] : FS.cwd();
+					// Skip empty and invalid entries
+					if (typeof path != "string") {
+						throw new TypeError("Arguments to path.resolve must be strings");
+					} else if (!path) {
+						return ""; // an invalid portion invalidates the whole thing
+					}
+					resolvedPath = path + "/" + resolvedPath;
+					resolvedAbsolute = PATH.isAbs(path);
+				}
+				// At this point the path should be resolved to a full absolute path, but
+				// handle relative paths to be safe (might happen when process.cwd() fails)
+				resolvedPath = PATH.normalizeArray(
+					resolvedPath.split("/").filter((p) => !!p),
+					!resolvedAbsolute,
+				).join("/");
+				return (resolvedAbsolute ? "/" : "") + resolvedPath || ".";
+			},
+			relative: (from, to) => {
+				from = PATH_FS.resolve(from).substr(1);
+				to = PATH_FS.resolve(to).substr(1);
+				function trim(arr) {
+					var start = 0;
+					for (; start < arr.length; start++) {
+						if (arr[start] !== "") break;
+					}
+					var end = arr.length - 1;
+					for (; end >= 0; end--) {
+						if (arr[end] !== "") break;
+					}
+					if (start > end) return [];
+					return arr.slice(start, end - start + 1);
+				}
+				var fromParts = trim(from.split("/"));
+				var toParts = trim(to.split("/"));
+				var length = Math.min(fromParts.length, toParts.length);
+				var samePartsLength = length;
+				for (var i = 0; i < length; i++) {
+					if (fromParts[i] !== toParts[i]) {
+						samePartsLength = i;
+						break;
+					}
+				}
+				var outputParts = [];
+				for (var i = samePartsLength; i < fromParts.length; i++) {
+					outputParts.push("..");
+				}
+				outputParts = outputParts.concat(toParts.slice(samePartsLength));
+				return outputParts.join("/");
+			},
+		};
+
+		var FS_stdin_getChar_buffer = [];
+
+		var lengthBytesUTF8 = (str) => {
+			var len = 0;
+			for (var i = 0; i < str.length; ++i) {
+				// Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code
+				// unit, not a Unicode code point of the character! So decode
+				// UTF16->UTF32->UTF8.
+				// See http://unicode.org/faq/utf_bom.html#utf16-3
+				var c = str.charCodeAt(i); // possibly a lead surrogate
+				if (c <= 0x7f) {
+					len++;
+				} else if (c <= 0x7ff) {
+					len += 2;
+				} else if (c >= 0xd800 && c <= 0xdfff) {
+					len += 4;
+					++i;
+				} else {
+					len += 3;
+				}
+			}
+			return len;
+		};
+
+		var stringToUTF8Array = (str, heap, outIdx, maxBytesToWrite) => {
+			assert(
+				typeof str === "string",
+				`stringToUTF8Array expects a string (got ${typeof str})`,
+			);
+			// Parameter maxBytesToWrite is not optional. Negative values, 0, null,
+			// undefined and false each don't write out any bytes.
+			if (!(maxBytesToWrite > 0)) return 0;
+
+			var startIdx = outIdx;
+			var endIdx = outIdx + maxBytesToWrite - 1; // -1 for string null terminator.
+			for (var i = 0; i < str.length; ++i) {
+				// Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code
+				// unit, not a Unicode code point of the character! So decode
+				// UTF16->UTF32->UTF8.
+				// See http://unicode.org/faq/utf_bom.html#utf16-3
+				// For UTF8 byte structure, see http://en.wikipedia.org/wiki/UTF-8#Description
+				// and https://www.ietf.org/rfc/rfc2279.txt
+				// and https://tools.ietf.org/html/rfc3629
+				var u = str.charCodeAt(i); // possibly a lead surrogate
+				if (u >= 0xd800 && u <= 0xdfff) {
+					var u1 = str.charCodeAt(++i);
+					u = (0x10000 + ((u & 0x3ff) << 10)) | (u1 & 0x3ff);
+				}
+				if (u <= 0x7f) {
+					if (outIdx >= endIdx) break;
+					heap[outIdx++] = u;
+				} else if (u <= 0x7ff) {
+					if (outIdx + 1 >= endIdx) break;
+					heap[outIdx++] = 0xc0 | (u >> 6);
+					heap[outIdx++] = 0x80 | (u & 63);
+				} else if (u <= 0xffff) {
+					if (outIdx + 2 >= endIdx) break;
+					heap[outIdx++] = 0xe0 | (u >> 12);
+					heap[outIdx++] = 0x80 | ((u >> 6) & 63);
+					heap[outIdx++] = 0x80 | (u & 63);
+				} else {
+					if (outIdx + 3 >= endIdx) break;
+					if (u > 0x10ffff)
+						warnOnce(
+							"Invalid Unicode code point " +
+								ptrToString(u) +
+								" encountered when serializing a JS string to a UTF-8 string in wasm memory! (Valid unicode code points should be in range 0-0x10FFFF).",
+						);
+					heap[outIdx++] = 0xf0 | (u >> 18);
+					heap[outIdx++] = 0x80 | ((u >> 12) & 63);
+					heap[outIdx++] = 0x80 | ((u >> 6) & 63);
+					heap[outIdx++] = 0x80 | (u & 63);
+				}
+			}
+			// Null-terminate the pointer to the buffer.
+			heap[outIdx] = 0;
+			return outIdx - startIdx;
+		};
+		/** @type {function(string, boolean=, number=)} */
+		function intArrayFromString(stringy, dontAddNull, length) {
+			var len = length > 0 ? length : lengthBytesUTF8(stringy) + 1;
+			var u8array = new Array(len);
+			var numBytesWritten = stringToUTF8Array(
+				stringy,
+				u8array,
+				0,
+				u8array.length,
+			);
+			if (dontAddNull) u8array.length = numBytesWritten;
+			return u8array;
+		}
+		var FS_stdin_getChar = () => {
+			if (!FS_stdin_getChar_buffer.length) {
+				var result = null;
+				if (
+					typeof window != "undefined" &&
+					typeof window.prompt == "function"
+				) {
+					// Browser.
+					result = window.prompt("Input: "); // returns null on cancel
+					if (result !== null) {
+						result += "\n";
+					}
+				} else {
+				}
+				if (!result) {
+					return null;
+				}
+				FS_stdin_getChar_buffer = intArrayFromString(result, true);
+			}
+			return FS_stdin_getChar_buffer.shift();
+		};
+		var TTY = {
+			ttys: [],
+			init() {
+				// https://github.com/emscripten-core/emscripten/pull/1555
+				// if (ENVIRONMENT_IS_NODE) {
+				//   // currently, FS.init does not distinguish if process.stdin is a file or TTY
+				//   // device, it always assumes it's a TTY device. because of this, we're forcing
+				//   // process.stdin to UTF8 encoding to at least make stdin reading compatible
+				//   // with text files until FS.init can be refactored.
+				//   process.stdin.setEncoding('utf8');
+				// }
+			},
+			shutdown() {
+				// https://github.com/emscripten-core/emscripten/pull/1555
+				// if (ENVIRONMENT_IS_NODE) {
+				//   // inolen: any idea as to why node -e 'process.stdin.read()' wouldn't exit immediately (with process.stdin being a tty)?
+				//   // isaacs: because now it's reading from the stream, you've expressed interest in it, so that read() kicks off a _read() which creates a ReadReq operation
+				//   // inolen: I thought read() in that case was a synchronous operation that just grabbed some amount of buffered data if it exists?
+				//   // isaacs: it is. but it also triggers a _read() call, which calls readStart() on the handle
+				//   // isaacs: do process.stdin.pause() and i'd think it'd probably close the pending call
+				//   process.stdin.pause();
+				// }
+			},
+			register(dev, ops) {
+				TTY.ttys[dev] = { input: [], output: [], ops: ops };
+				FS.registerDevice(dev, TTY.stream_ops);
+			},
+			stream_ops: {
+				open(stream) {
+					var tty = TTY.ttys[stream.node.rdev];
+					if (!tty) {
+						throw new FS.ErrnoError(43);
+					}
+					stream.tty = tty;
+					stream.seekable = false;
+				},
+				close(stream) {
+					// flush any pending line data
+					stream.tty.ops.fsync(stream.tty);
+				},
+				fsync(stream) {
+					stream.tty.ops.fsync(stream.tty);
+				},
+				read(stream, buffer, offset, length, pos /* ignored */) {
+					if (!stream.tty || !stream.tty.ops.get_char) {
+						throw new FS.ErrnoError(60);
+					}
+					var bytesRead = 0;
+					for (var i = 0; i < length; i++) {
+						var result;
+						try {
+							result = stream.tty.ops.get_char(stream.tty);
+						} catch (e) {
+							throw new FS.ErrnoError(29);
+						}
+						if (result === undefined && bytesRead === 0) {
+							throw new FS.ErrnoError(6);
+						}
+						if (result === null || result === undefined) break;
+						bytesRead++;
+						buffer[offset + i] = result;
+					}
+					if (bytesRead) {
+						stream.node.atime = Date.now();
+					}
+					return bytesRead;
+				},
+				write(stream, buffer, offset, length, pos) {
+					if (!stream.tty || !stream.tty.ops.put_char) {
+						throw new FS.ErrnoError(60);
+					}
+					try {
+						for (var i = 0; i < length; i++) {
+							stream.tty.ops.put_char(stream.tty, buffer[offset + i]);
+						}
+					} catch (e) {
+						throw new FS.ErrnoError(29);
+					}
+					if (length) {
+						stream.node.mtime = stream.node.ctime = Date.now();
+					}
+					return i;
+				},
+			},
+			default_tty_ops: {
+				get_char(tty) {
+					return FS_stdin_getChar();
+				},
+				put_char(tty, val) {
+					if (val === null || val === 10) {
+						out(UTF8ArrayToString(tty.output));
+						tty.output = [];
+					} else {
+						if (val != 0) tty.output.push(val); // val == 0 would cut text output off in the middle.
+					}
+				},
+				fsync(tty) {
+					if (tty.output && tty.output.length > 0) {
+						out(UTF8ArrayToString(tty.output));
+						tty.output = [];
+					}
+				},
+				ioctl_tcgets(tty) {
+					// typical setting
+					return {
+						c_iflag: 25856,
+						c_oflag: 5,
+						c_cflag: 191,
+						c_lflag: 35387,
+						c_cc: [
+							0x03, 0x1c, 0x7f, 0x15, 0x04, 0x00, 0x01, 0x00, 0x11, 0x13, 0x1a,
+							0x00, 0x12, 0x0f, 0x17, 0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+							0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						],
+					};
+				},
+				ioctl_tcsets(tty, optional_actions, data) {
+					// currently just ignore
+					return 0;
+				},
+				ioctl_tiocgwinsz(tty) {
+					return [24, 80];
+				},
+			},
+			default_tty1_ops: {
+				put_char(tty, val) {
+					if (val === null || val === 10) {
+						err(UTF8ArrayToString(tty.output));
+						tty.output = [];
+					} else {
+						if (val != 0) tty.output.push(val);
+					}
+				},
+				fsync(tty) {
+					if (tty.output && tty.output.length > 0) {
+						err(UTF8ArrayToString(tty.output));
+						tty.output = [];
+					}
+				},
+			},
+		};
+
+		var zeroMemory = (address, size) => {
+			HEAPU8.fill(0, address, address + size);
+		};
+
+		var alignMemory = (size, alignment) => {
+			assert(alignment, "alignment argument is required");
+			return Math.ceil(size / alignment) * alignment;
+		};
+		var mmapAlloc = (size) => {
+			size = alignMemory(size, 65536);
+			var ptr = _emscripten_builtin_memalign(65536, size);
+			if (ptr) zeroMemory(ptr, size);
+			return ptr;
+		};
+		var MEMFS = {
+			ops_table: null,
+			mount(mount) {
+				return MEMFS.createNode(null, "/", 16895, 0);
+			},
+			createNode(parent, name, mode, dev) {
+				if (FS.isBlkdev(mode) || FS.isFIFO(mode)) {
+					// no supported
+					throw new FS.ErrnoError(63);
+				}
+				MEMFS.ops_table ||= {
+					dir: {
+						node: {
+							getattr: MEMFS.node_ops.getattr,
+							setattr: MEMFS.node_ops.setattr,
+							lookup: MEMFS.node_ops.lookup,
+							mknod: MEMFS.node_ops.mknod,
+							rename: MEMFS.node_ops.rename,
+							unlink: MEMFS.node_ops.unlink,
+							rmdir: MEMFS.node_ops.rmdir,
+							readdir: MEMFS.node_ops.readdir,
+							symlink: MEMFS.node_ops.symlink,
+						},
+						stream: {
+							llseek: MEMFS.stream_ops.llseek,
+						},
+					},
+					file: {
+						node: {
+							getattr: MEMFS.node_ops.getattr,
+							setattr: MEMFS.node_ops.setattr,
+						},
+						stream: {
+							llseek: MEMFS.stream_ops.llseek,
+							read: MEMFS.stream_ops.read,
+							write: MEMFS.stream_ops.write,
+							allocate: MEMFS.stream_ops.allocate,
+							mmap: MEMFS.stream_ops.mmap,
+							msync: MEMFS.stream_ops.msync,
+						},
+					},
+					link: {
+						node: {
+							getattr: MEMFS.node_ops.getattr,
+							setattr: MEMFS.node_ops.setattr,
+							readlink: MEMFS.node_ops.readlink,
+						},
+						stream: {},
+					},
+					chrdev: {
+						node: {
+							getattr: MEMFS.node_ops.getattr,
+							setattr: MEMFS.node_ops.setattr,
+						},
+						stream: FS.chrdev_stream_ops,
+					},
+				};
+				var node = FS.createNode(parent, name, mode, dev);
+				if (FS.isDir(node.mode)) {
+					node.node_ops = MEMFS.ops_table.dir.node;
+					node.stream_ops = MEMFS.ops_table.dir.stream;
+					node.contents = {};
+				} else if (FS.isFile(node.mode)) {
+					node.node_ops = MEMFS.ops_table.file.node;
+					node.stream_ops = MEMFS.ops_table.file.stream;
+					node.usedBytes = 0; // The actual number of bytes used in the typed array, as opposed to contents.length which gives the whole capacity.
+					// When the byte data of the file is populated, this will point to either a typed array, or a normal JS array. Typed arrays are preferred
+					// for performance, and used by default. However, typed arrays are not resizable like normal JS arrays are, so there is a small disk size
+					// penalty involved for appending file writes that continuously grow a file similar to std::vector capacity vs used -scheme.
+					node.contents = null;
+				} else if (FS.isLink(node.mode)) {
+					node.node_ops = MEMFS.ops_table.link.node;
+					node.stream_ops = MEMFS.ops_table.link.stream;
+				} else if (FS.isChrdev(node.mode)) {
+					node.node_ops = MEMFS.ops_table.chrdev.node;
+					node.stream_ops = MEMFS.ops_table.chrdev.stream;
+				}
+				node.atime = node.mtime = node.ctime = Date.now();
+				// add the new node to the parent
+				if (parent) {
+					parent.contents[name] = node;
+					parent.atime = parent.mtime = parent.ctime = node.atime;
+				}
+				return node;
+			},
+			getFileDataAsTypedArray(node) {
+				if (!node.contents) return new Uint8Array(0);
+				if (node.contents.subarray)
+					return node.contents.subarray(0, node.usedBytes); // Make sure to not return excess unused bytes.
+				return new Uint8Array(node.contents);
+			},
+			expandFileStorage(node, newCapacity) {
+				var prevCapacity = node.contents ? node.contents.length : 0;
+				if (prevCapacity >= newCapacity) return; // No need to expand, the storage was already large enough.
+				// Don't expand strictly to the given requested limit if it's only a very small increase, but instead geometrically grow capacity.
+				// For small filesizes (<1MB), perform size*2 geometric increase, but for large sizes, do a much more conservative size*1.125 increase to
+				// avoid overshooting the allocation cap by a very large margin.
+				var CAPACITY_DOUBLING_MAX = 1024 * 1024;
+				newCapacity = Math.max(
+					newCapacity,
+					(prevCapacity *
+						(prevCapacity < CAPACITY_DOUBLING_MAX ? 2.0 : 1.125)) >>>
+						0,
+				);
+				if (prevCapacity != 0) newCapacity = Math.max(newCapacity, 256); // At minimum allocate 256b for each file when expanding.
+				var oldContents = node.contents;
+				node.contents = new Uint8Array(newCapacity); // Allocate new storage.
+				if (node.usedBytes > 0)
+					node.contents.set(oldContents.subarray(0, node.usedBytes), 0); // Copy old data over to the new storage.
+			},
+			resizeFileStorage(node, newSize) {
+				if (node.usedBytes == newSize) return;
+				if (newSize == 0) {
+					node.contents = null; // Fully decommit when requesting a resize to zero.
+					node.usedBytes = 0;
+				} else {
+					var oldContents = node.contents;
+					node.contents = new Uint8Array(newSize); // Allocate new storage.
+					if (oldContents) {
+						node.contents.set(
+							oldContents.subarray(0, Math.min(newSize, node.usedBytes)),
+						); // Copy old data over to the new storage.
+					}
+					node.usedBytes = newSize;
+				}
+			},
+			node_ops: {
+				getattr(node) {
+					var attr = {};
+					// device numbers reuse inode numbers.
+					attr.dev = FS.isChrdev(node.mode) ? node.id : 1;
+					attr.ino = node.id;
+					attr.mode = node.mode;
+					attr.nlink = 1;
+					attr.uid = 0;
+					attr.gid = 0;
+					attr.rdev = node.rdev;
+					if (FS.isDir(node.mode)) {
+						attr.size = 4096;
+					} else if (FS.isFile(node.mode)) {
+						attr.size = node.usedBytes;
+					} else if (FS.isLink(node.mode)) {
+						attr.size = node.link.length;
+					} else {
+						attr.size = 0;
+					}
+					attr.atime = new Date(node.atime);
+					attr.mtime = new Date(node.mtime);
+					attr.ctime = new Date(node.ctime);
+					// NOTE: In our implementation, st_blocks = Math.ceil(st_size/st_blksize),
+					//       but this is not required by the standard.
+					attr.blksize = 4096;
+					attr.blocks = Math.ceil(attr.size / attr.blksize);
+					return attr;
+				},
+				setattr(node, attr) {
+					for (const key of ["mode", "atime", "mtime", "ctime"]) {
+						if (attr[key]) {
+							node[key] = attr[key];
+						}
+					}
+					if (attr.size !== undefined) {
+						MEMFS.resizeFileStorage(node, attr.size);
+					}
+				},
+				lookup(parent, name) {
+					throw new FS.ErrnoError(44);
+				},
+				mknod(parent, name, mode, dev) {
+					return MEMFS.createNode(parent, name, mode, dev);
+				},
+				rename(old_node, new_dir, new_name) {
+					var new_node;
+					try {
+						new_node = FS.lookupNode(new_dir, new_name);
+					} catch (e) {}
+					if (new_node) {
+						if (FS.isDir(old_node.mode)) {
+							// if we're overwriting a directory at new_name, make sure it's empty.
+							for (var i in new_node.contents) {
+								throw new FS.ErrnoError(55);
+							}
+						}
+						FS.hashRemoveNode(new_node);
+					}
+					// do the internal rewiring
+					delete old_node.parent.contents[old_node.name];
+					new_dir.contents[new_name] = old_node;
+					old_node.name = new_name;
+					new_dir.ctime =
+						new_dir.mtime =
+						old_node.parent.ctime =
+						old_node.parent.mtime =
+							Date.now();
+				},
+				unlink(parent, name) {
+					delete parent.contents[name];
+					parent.ctime = parent.mtime = Date.now();
+				},
+				rmdir(parent, name) {
+					var node = FS.lookupNode(parent, name);
+					for (var i in node.contents) {
+						throw new FS.ErrnoError(55);
+					}
+					delete parent.contents[name];
+					parent.ctime = parent.mtime = Date.now();
+				},
+				readdir(node) {
+					return [".", "..", ...Object.keys(node.contents)];
+				},
+				symlink(parent, newname, oldpath) {
+					var node = MEMFS.createNode(parent, newname, 0o777 | 40960, 0);
+					node.link = oldpath;
+					return node;
+				},
+				readlink(node) {
+					if (!FS.isLink(node.mode)) {
+						throw new FS.ErrnoError(28);
+					}
+					return node.link;
+				},
+			},
+			stream_ops: {
+				read(stream, buffer, offset, length, position) {
+					var contents = stream.node.contents;
+					if (position >= stream.node.usedBytes) return 0;
+					var size = Math.min(stream.node.usedBytes - position, length);
+					assert(size >= 0);
+					if (size > 8 && contents.subarray) {
+						// non-trivial, and typed array
+						buffer.set(contents.subarray(position, position + size), offset);
+					} else {
+						for (var i = 0; i < size; i++)
+							buffer[offset + i] = contents[position + i];
+					}
+					return size;
+				},
+				write(stream, buffer, offset, length, position, canOwn) {
+					// The data buffer should be a typed array view
+					assert(!(buffer instanceof ArrayBuffer));
+
+					if (!length) return 0;
+					var node = stream.node;
+					node.mtime = node.ctime = Date.now();
+
+					if (buffer.subarray && (!node.contents || node.contents.subarray)) {
+						// This write is from a typed array to a typed array?
+						if (canOwn) {
+							assert(
+								position === 0,
+								"canOwn must imply no weird position inside the file",
+							);
+							node.contents = buffer.subarray(offset, offset + length);
+							node.usedBytes = length;
+							return length;
+						} else if (node.usedBytes === 0 && position === 0) {
+							// If this is a simple first write to an empty file, do a fast set since we don't need to care about old data.
+							node.contents = buffer.slice(offset, offset + length);
+							node.usedBytes = length;
+							return length;
+						} else if (position + length <= node.usedBytes) {
+							// Writing to an already allocated and used subrange of the file?
+							node.contents.set(
+								buffer.subarray(offset, offset + length),
+								position,
+							);
+							return length;
+						}
+					}
+
+					// Appending to an existing file and we need to reallocate, or source data did not come as a typed array.
+					MEMFS.expandFileStorage(node, position + length);
+					if (node.contents.subarray && buffer.subarray) {
+						// Use typed array write which is available.
+						node.contents.set(
+							buffer.subarray(offset, offset + length),
+							position,
+						);
+					} else {
+						for (var i = 0; i < length; i++) {
+							node.contents[position + i] = buffer[offset + i]; // Or fall back to manual write if not.
+						}
+					}
+					node.usedBytes = Math.max(node.usedBytes, position + length);
+					return length;
+				},
+				llseek(stream, offset, whence) {
+					var position = offset;
+					if (whence === 1) {
+						position += stream.position;
+					} else if (whence === 2) {
+						if (FS.isFile(stream.node.mode)) {
+							position += stream.node.usedBytes;
+						}
+					}
+					if (position < 0) {
+						throw new FS.ErrnoError(28);
+					}
+					return position;
+				},
+				allocate(stream, offset, length) {
+					MEMFS.expandFileStorage(stream.node, offset + length);
+					stream.node.usedBytes = Math.max(
+						stream.node.usedBytes,
+						offset + length,
+					);
+				},
+				mmap(stream, length, position, prot, flags) {
+					if (!FS.isFile(stream.node.mode)) {
+						throw new FS.ErrnoError(43);
+					}
+					var ptr;
+					var allocated;
+					var contents = stream.node.contents;
+					// Only make a new copy when MAP_PRIVATE is specified.
+					if (!(flags & 2) && contents && contents.buffer === HEAP8.buffer) {
+						// We can't emulate MAP_SHARED when the file is not backed by the
+						// buffer we're mapping to (e.g. the HEAP buffer).
+						allocated = false;
+						ptr = contents.byteOffset;
+					} else {
+						allocated = true;
+						ptr = mmapAlloc(length);
+						if (!ptr) {
+							throw new FS.ErrnoError(48);
+						}
+						if (contents) {
+							// Try to avoid unnecessary slices.
+							if (position > 0 || position + length < contents.length) {
+								if (contents.subarray) {
+									contents = contents.subarray(position, position + length);
+								} else {
+									contents = Array.prototype.slice.call(
+										contents,
+										position,
+										position + length,
+									);
+								}
+							}
+							HEAP8.set(contents, ptr);
+						}
+					}
+					return { ptr, allocated };
+				},
+				msync(stream, buffer, offset, length, mmapFlags) {
+					MEMFS.stream_ops.write(stream, buffer, 0, length, offset, false);
+					// should we check if bytesWritten and length are the same?
+					return 0;
+				},
+			},
+		};
+
+		var asyncLoad = async (url) => {
+			var arrayBuffer = await readAsync(url);
+			assert(
+				arrayBuffer,
+				`Loading data file "${url}" failed (no arrayBuffer).`,
+			);
+			return new Uint8Array(arrayBuffer);
+		};
+
+		var FS_createDataFile = (
+			parent,
+			name,
+			fileData,
+			canRead,
+			canWrite,
+			canOwn,
+		) => {
+			FS.createDataFile(parent, name, fileData, canRead, canWrite, canOwn);
+		};
+
+		var preloadPlugins = Module["preloadPlugins"] || [];
+		var FS_handledByPreloadPlugin = (byteArray, fullname, finish, onerror) => {
+			// Ensure plugins are ready.
+			if (typeof Browser != "undefined") Browser.init();
+
+			var handled = false;
+			preloadPlugins.forEach((plugin) => {
+				if (handled) return;
+				if (plugin["canHandle"](fullname)) {
+					plugin["handle"](byteArray, fullname, finish, onerror);
+					handled = true;
+				}
+			});
+			return handled;
+		};
+		var FS_createPreloadedFile = (
+			parent,
+			name,
+			url,
+			canRead,
+			canWrite,
+			onload,
+			onerror,
+			dontCreateFile,
+			canOwn,
+			preFinish,
+		) => {
+			// TODO we should allow people to just pass in a complete filename instead
+			// of parent and name being that we just join them anyways
+			var fullname = name ? PATH_FS.resolve(PATH.join2(parent, name)) : parent;
+			var dep = getUniqueRunDependency(`cp ${fullname}`); // might have several active requests for the same fullname
+			function processData(byteArray) {
+				function finish(byteArray) {
+					preFinish?.();
+					if (!dontCreateFile) {
+						FS_createDataFile(
+							parent,
+							name,
+							byteArray,
+							canRead,
+							canWrite,
+							canOwn,
+						);
+					}
+					onload?.();
+					removeRunDependency(dep);
+				}
+				if (
+					FS_handledByPreloadPlugin(byteArray, fullname, finish, () => {
+						onerror?.();
+						removeRunDependency(dep);
+					})
+				) {
+					return;
+				}
+				finish(byteArray);
+			}
+			addRunDependency(dep);
+			if (typeof url == "string") {
+				asyncLoad(url).then(processData, onerror);
+			} else {
+				processData(url);
+			}
+		};
+
+		var FS_modeStringToFlags = (str) => {
+			var flagModes = {
+				r: 0,
+				"r+": 2,
+				w: 512 | 64 | 1,
+				"w+": 512 | 64 | 2,
+				a: 1024 | 64 | 1,
+				"a+": 1024 | 64 | 2,
+			};
+			var flags = flagModes[str];
+			if (typeof flags == "undefined") {
+				throw new Error(`Unknown file open mode: ${str}`);
+			}
+			return flags;
+		};
+
+		var FS_getMode = (canRead, canWrite) => {
+			var mode = 0;
+			if (canRead) mode |= 292 | 73;
+			if (canWrite) mode |= 146;
+			return mode;
+		};
+
+		var strError = (errno) => UTF8ToString(_strerror(errno));
+
+		var ERRNO_CODES = {
+			EPERM: 63,
+			ENOENT: 44,
+			ESRCH: 71,
+			EINTR: 27,
+			EIO: 29,
+			ENXIO: 60,
+			E2BIG: 1,
+			ENOEXEC: 45,
+			EBADF: 8,
+			ECHILD: 12,
+			EAGAIN: 6,
+			EWOULDBLOCK: 6,
+			ENOMEM: 48,
+			EACCES: 2,
+			EFAULT: 21,
+			ENOTBLK: 105,
+			EBUSY: 10,
+			EEXIST: 20,
+			EXDEV: 75,
+			ENODEV: 43,
+			ENOTDIR: 54,
+			EISDIR: 31,
+			EINVAL: 28,
+			ENFILE: 41,
+			EMFILE: 33,
+			ENOTTY: 59,
+			ETXTBSY: 74,
+			EFBIG: 22,
+			ENOSPC: 51,
+			ESPIPE: 70,
+			EROFS: 69,
+			EMLINK: 34,
+			EPIPE: 64,
+			EDOM: 18,
+			ERANGE: 68,
+			ENOMSG: 49,
+			EIDRM: 24,
+			ECHRNG: 106,
+			EL2NSYNC: 156,
+			EL3HLT: 107,
+			EL3RST: 108,
+			ELNRNG: 109,
+			EUNATCH: 110,
+			ENOCSI: 111,
+			EL2HLT: 112,
+			EDEADLK: 16,
+			ENOLCK: 46,
+			EBADE: 113,
+			EBADR: 114,
+			EXFULL: 115,
+			ENOANO: 104,
+			EBADRQC: 103,
+			EBADSLT: 102,
+			EDEADLOCK: 16,
+			EBFONT: 101,
+			ENOSTR: 100,
+			ENODATA: 116,
+			ETIME: 117,
+			ENOSR: 118,
+			ENONET: 119,
+			ENOPKG: 120,
+			EREMOTE: 121,
+			ENOLINK: 47,
+			EADV: 122,
+			ESRMNT: 123,
+			ECOMM: 124,
+			EPROTO: 65,
+			EMULTIHOP: 36,
+			EDOTDOT: 125,
+			EBADMSG: 9,
+			ENOTUNIQ: 126,
+			EBADFD: 127,
+			EREMCHG: 128,
+			ELIBACC: 129,
+			ELIBBAD: 130,
+			ELIBSCN: 131,
+			ELIBMAX: 132,
+			ELIBEXEC: 133,
+			ENOSYS: 52,
+			ENOTEMPTY: 55,
+			ENAMETOOLONG: 37,
+			ELOOP: 32,
+			EOPNOTSUPP: 138,
+			EPFNOSUPPORT: 139,
+			ECONNRESET: 15,
+			ENOBUFS: 42,
+			EAFNOSUPPORT: 5,
+			EPROTOTYPE: 67,
+			ENOTSOCK: 57,
+			ENOPROTOOPT: 50,
+			ESHUTDOWN: 140,
+			ECONNREFUSED: 14,
+			EADDRINUSE: 3,
+			ECONNABORTED: 13,
+			ENETUNREACH: 40,
+			ENETDOWN: 38,
+			ETIMEDOUT: 73,
+			EHOSTDOWN: 142,
+			EHOSTUNREACH: 23,
+			EINPROGRESS: 26,
+			EALREADY: 7,
+			EDESTADDRREQ: 17,
+			EMSGSIZE: 35,
+			EPROTONOSUPPORT: 66,
+			ESOCKTNOSUPPORT: 137,
+			EADDRNOTAVAIL: 4,
+			ENETRESET: 39,
+			EISCONN: 30,
+			ENOTCONN: 53,
+			ETOOMANYREFS: 141,
+			EUSERS: 136,
+			EDQUOT: 19,
+			ESTALE: 72,
+			ENOTSUP: 138,
+			ENOMEDIUM: 148,
+			EILSEQ: 25,
+			EOVERFLOW: 61,
+			ECANCELED: 11,
+			ENOTRECOVERABLE: 56,
+			EOWNERDEAD: 62,
+			ESTRPIPE: 135,
+		};
+		var FS = {
+			root: null,
+			mounts: [],
+			devices: {},
+			streams: [],
+			nextInode: 1,
+			nameTable: null,
+			currentPath: "/",
+			initialized: false,
+			ignorePermissions: true,
+			ErrnoError: class extends Error {
+				name = "ErrnoError";
+				// We set the `name` property to be able to identify `FS.ErrnoError`
+				// - the `name` is a standard ECMA-262 property of error objects. Kind of good to have it anyway.
+				// - when using PROXYFS, an error can come from an underlying FS
+				// as different FS objects have their own FS.ErrnoError each,
+				// the test `err instanceof FS.ErrnoError` won't detect an error coming from another filesystem, causing bugs.
+				// we'll use the reliable test `err.name == "ErrnoError"` instead
+				constructor(errno) {
+					super(runtimeInitialized ? strError(errno) : "");
+					this.errno = errno;
+					for (var key in ERRNO_CODES) {
+						if (ERRNO_CODES[key] === errno) {
+							this.code = key;
+							break;
+						}
+					}
+				}
+			},
+			filesystems: null,
+			syncFSRequests: 0,
+			readFiles: {},
+			FSStream: class {
+				shared = {};
+				get object() {
+					return this.node;
+				}
+				set object(val) {
+					this.node = val;
+				}
+				get isRead() {
+					return (this.flags & 2097155) !== 1;
+				}
+				get isWrite() {
+					return (this.flags & 2097155) !== 0;
+				}
+				get isAppend() {
+					return this.flags & 1024;
+				}
+				get flags() {
+					return this.shared.flags;
+				}
+				set flags(val) {
+					this.shared.flags = val;
+				}
+				get position() {
+					return this.shared.position;
+				}
+				set position(val) {
+					this.shared.position = val;
+				}
+			},
+			FSNode: class {
+				node_ops = {};
+				stream_ops = {};
+				readMode = 292 | 73;
+				writeMode = 146;
+				mounted = null;
+				constructor(parent, name, mode, rdev) {
+					if (!parent) {
+						parent = this; // root node sets parent to itself
+					}
+					this.parent = parent;
+					this.mount = parent.mount;
+					this.id = FS.nextInode++;
+					this.name = name;
+					this.mode = mode;
+					this.rdev = rdev;
+					this.atime = this.mtime = this.ctime = Date.now();
+				}
+				get read() {
+					return (this.mode & this.readMode) === this.readMode;
+				}
+				set read(val) {
+					val ? (this.mode |= this.readMode) : (this.mode &= ~this.readMode);
+				}
+				get write() {
+					return (this.mode & this.writeMode) === this.writeMode;
+				}
+				set write(val) {
+					val ? (this.mode |= this.writeMode) : (this.mode &= ~this.writeMode);
+				}
+				get isFolder() {
+					return FS.isDir(this.mode);
+				}
+				get isDevice() {
+					return FS.isChrdev(this.mode);
+				}
+			},
+			lookupPath(path, opts = {}) {
+				if (!path) return { path: "", node: null };
+				opts.follow_mount ??= true;
+
+				if (!PATH.isAbs(path)) {
+					path = FS.cwd() + "/" + path;
+				}
+
+				// limit max consecutive symlinks to 40 (SYMLOOP_MAX).
+				linkloop: for (var nlinks = 0; nlinks < 40; nlinks++) {
+					// split the absolute path
+					var parts = path.split("/").filter((p) => !!p && p !== ".");
+
+					// start at the root
+					var current = FS.root;
+					var current_path = "/";
+
+					for (var i = 0; i < parts.length; i++) {
+						var islast = i === parts.length - 1;
+						if (islast && opts.parent) {
+							// stop resolving
+							break;
+						}
+
+						if (parts[i] === "..") {
+							current_path = PATH.dirname(current_path);
+							current = current.parent;
+							continue;
+						}
+
+						current_path = PATH.join2(current_path, parts[i]);
+						try {
+							current = FS.lookupNode(current, parts[i]);
+						} catch (e) {
+							// if noent_okay is true, suppress a ENOENT in the last component
+							// and return an object with an undefined node. This is needed for
+							// resolving symlinks in the path when creating a file.
+							if (e?.errno === 44 && islast && opts.noent_okay) {
+								return { path: current_path };
+							}
+							throw e;
+						}
+
+						// jump to the mount's root node if this is a mountpoint
+						if (FS.isMountpoint(current) && (!islast || opts.follow_mount)) {
+							current = current.mounted.root;
+						}
+
+						// by default, lookupPath will not follow a symlink if it is the final path component.
+						// setting opts.follow = true will override this behavior.
+						if (FS.isLink(current.mode) && (!islast || opts.follow)) {
+							if (!current.node_ops.readlink) {
+								throw new FS.ErrnoError(52);
+							}
+							var link = current.node_ops.readlink(current);
+							if (!PATH.isAbs(link)) {
+								link = PATH.dirname(current_path) + "/" + link;
+							}
+							path = link + "/" + parts.slice(i + 1).join("/");
+							continue linkloop;
+						}
+					}
+					return { path: current_path, node: current };
+				}
+				throw new FS.ErrnoError(32);
+			},
+			getPath(node) {
+				var path;
+				while (true) {
+					if (FS.isRoot(node)) {
+						var mount = node.mount.mountpoint;
+						if (!path) return mount;
+						return mount[mount.length - 1] !== "/"
+							? `${mount}/${path}`
+							: mount + path;
+					}
+					path = path ? `${node.name}/${path}` : node.name;
+					node = node.parent;
+				}
+			},
+			hashName(parentid, name) {
+				var hash = 0;
+
+				for (var i = 0; i < name.length; i++) {
+					hash = ((hash << 5) - hash + name.charCodeAt(i)) | 0;
+				}
+				return ((parentid + hash) >>> 0) % FS.nameTable.length;
+			},
+			hashAddNode(node) {
+				var hash = FS.hashName(node.parent.id, node.name);
+				node.name_next = FS.nameTable[hash];
+				FS.nameTable[hash] = node;
+			},
+			hashRemoveNode(node) {
+				var hash = FS.hashName(node.parent.id, node.name);
+				if (FS.nameTable[hash] === node) {
+					FS.nameTable[hash] = node.name_next;
+				} else {
+					var current = FS.nameTable[hash];
+					while (current) {
+						if (current.name_next === node) {
+							current.name_next = node.name_next;
+							break;
+						}
+						current = current.name_next;
+					}
+				}
+			},
+			lookupNode(parent, name) {
+				var errCode = FS.mayLookup(parent);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				var hash = FS.hashName(parent.id, name);
+				for (var node = FS.nameTable[hash]; node; node = node.name_next) {
+					var nodeName = node.name;
+					if (node.parent.id === parent.id && nodeName === name) {
+						return node;
+					}
+				}
+				// if we failed to find it in the cache, call into the VFS
+				return FS.lookup(parent, name);
+			},
+			createNode(parent, name, mode, rdev) {
+				assert(typeof parent == "object");
+				var node = new FS.FSNode(parent, name, mode, rdev);
+
+				FS.hashAddNode(node);
+
+				return node;
+			},
+			destroyNode(node) {
+				FS.hashRemoveNode(node);
+			},
+			isRoot(node) {
+				return node === node.parent;
+			},
+			isMountpoint(node) {
+				return !!node.mounted;
+			},
+			isFile(mode) {
+				return (mode & 61440) === 32768;
+			},
+			isDir(mode) {
+				return (mode & 61440) === 16384;
+			},
+			isLink(mode) {
+				return (mode & 61440) === 40960;
+			},
+			isChrdev(mode) {
+				return (mode & 61440) === 8192;
+			},
+			isBlkdev(mode) {
+				return (mode & 61440) === 24576;
+			},
+			isFIFO(mode) {
+				return (mode & 61440) === 4096;
+			},
+			isSocket(mode) {
+				return (mode & 49152) === 49152;
+			},
+			flagsToPermissionString(flag) {
+				var perms = ["r", "w", "rw"][flag & 3];
+				if (flag & 512) {
+					perms += "w";
+				}
+				return perms;
+			},
+			nodePermissions(node, perms) {
+				if (FS.ignorePermissions) {
+					return 0;
+				}
+				// return 0 if any user, group or owner bits are set.
+				if (perms.includes("r") && !(node.mode & 292)) {
+					return 2;
+				} else if (perms.includes("w") && !(node.mode & 146)) {
+					return 2;
+				} else if (perms.includes("x") && !(node.mode & 73)) {
+					return 2;
+				}
+				return 0;
+			},
+			mayLookup(dir) {
+				if (!FS.isDir(dir.mode)) return 54;
+				var errCode = FS.nodePermissions(dir, "x");
+				if (errCode) return errCode;
+				if (!dir.node_ops.lookup) return 2;
+				return 0;
+			},
+			mayCreate(dir, name) {
+				if (!FS.isDir(dir.mode)) {
+					return 54;
+				}
+				try {
+					var node = FS.lookupNode(dir, name);
+					return 20;
+				} catch (e) {}
+				return FS.nodePermissions(dir, "wx");
+			},
+			mayDelete(dir, name, isdir) {
+				var node;
+				try {
+					node = FS.lookupNode(dir, name);
+				} catch (e) {
+					return e.errno;
+				}
+				var errCode = FS.nodePermissions(dir, "wx");
+				if (errCode) {
+					return errCode;
+				}
+				if (isdir) {
+					if (!FS.isDir(node.mode)) {
+						return 54;
+					}
+					if (FS.isRoot(node) || FS.getPath(node) === FS.cwd()) {
+						return 10;
+					}
+				} else {
+					if (FS.isDir(node.mode)) {
+						return 31;
+					}
+				}
+				return 0;
+			},
+			mayOpen(node, flags) {
+				if (!node) {
+					return 44;
+				}
+				if (FS.isLink(node.mode)) {
+					return 32;
+				} else if (FS.isDir(node.mode)) {
+					if (
+						FS.flagsToPermissionString(flags) !== "r" || // opening for write
+						flags & 512
+					) {
+						// TODO: check for O_SEARCH? (== search for dir only)
+						return 31;
+					}
+				}
+				return FS.nodePermissions(node, FS.flagsToPermissionString(flags));
+			},
+			MAX_OPEN_FDS: 4096,
+			nextfd() {
+				for (var fd = 0; fd <= FS.MAX_OPEN_FDS; fd++) {
+					if (!FS.streams[fd]) {
+						return fd;
+					}
+				}
+				throw new FS.ErrnoError(33);
+			},
+			getStreamChecked(fd) {
+				var stream = FS.getStream(fd);
+				if (!stream) {
+					throw new FS.ErrnoError(8);
+				}
+				return stream;
+			},
+			getStream: (fd) => FS.streams[fd],
+			createStream(stream, fd = -1) {
+				assert(fd >= -1);
+
+				// clone it, so we can return an instance of FSStream
+				stream = Object.assign(new FS.FSStream(), stream);
+				if (fd == -1) {
+					fd = FS.nextfd();
+				}
+				stream.fd = fd;
+				FS.streams[fd] = stream;
+				return stream;
+			},
+			closeStream(fd) {
+				FS.streams[fd] = null;
+			},
+			dupStream(origStream, fd = -1) {
+				var stream = FS.createStream(origStream, fd);
+				stream.stream_ops?.dup?.(stream);
+				return stream;
+			},
+			chrdev_stream_ops: {
+				open(stream) {
+					var device = FS.getDevice(stream.node.rdev);
+					// override node's stream ops with the device's
+					stream.stream_ops = device.stream_ops;
+					// forward the open call
+					stream.stream_ops.open?.(stream);
+				},
+				llseek() {
+					throw new FS.ErrnoError(70);
+				},
+			},
+			major: (dev) => dev >> 8,
+			minor: (dev) => dev & 0xff,
+			makedev: (ma, mi) => (ma << 8) | mi,
+			registerDevice(dev, ops) {
+				FS.devices[dev] = { stream_ops: ops };
+			},
+			getDevice: (dev) => FS.devices[dev],
+			getMounts(mount) {
+				var mounts = [];
+				var check = [mount];
+
+				while (check.length) {
+					var m = check.pop();
+
+					mounts.push(m);
+
+					check.push(...m.mounts);
+				}
+
+				return mounts;
+			},
+			syncfs(populate, callback) {
+				if (typeof populate == "function") {
+					callback = populate;
+					populate = false;
+				}
+
+				FS.syncFSRequests++;
+
+				if (FS.syncFSRequests > 1) {
+					err(
+						`warning: ${FS.syncFSRequests} FS.syncfs operations in flight at once, probably just doing extra work`,
+					);
+				}
+
+				var mounts = FS.getMounts(FS.root.mount);
+				var completed = 0;
+
+				function doCallback(errCode) {
+					assert(FS.syncFSRequests > 0);
+					FS.syncFSRequests--;
+					return callback(errCode);
+				}
+
+				function done(errCode) {
+					if (errCode) {
+						if (!done.errored) {
+							done.errored = true;
+							return doCallback(errCode);
+						}
+						return;
+					}
+					if (++completed >= mounts.length) {
+						doCallback(null);
+					}
+				}
+
+				// sync all mounts
+				mounts.forEach((mount) => {
+					if (!mount.type.syncfs) {
+						return done(null);
+					}
+					mount.type.syncfs(mount, populate, done);
+				});
+			},
+			mount(type, opts, mountpoint) {
+				if (typeof type == "string") {
+					// The filesystem was not included, and instead we have an error
+					// message stored in the variable.
+					throw type;
+				}
+				var root = mountpoint === "/";
+				var pseudo = !mountpoint;
+				var node;
+
+				if (root && FS.root) {
+					throw new FS.ErrnoError(10);
+				} else if (!root && !pseudo) {
+					var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
+
+					mountpoint = lookup.path; // use the absolute path
+					node = lookup.node;
+
+					if (FS.isMountpoint(node)) {
+						throw new FS.ErrnoError(10);
+					}
+
+					if (!FS.isDir(node.mode)) {
+						throw new FS.ErrnoError(54);
+					}
+				}
+
+				var mount = {
+					type,
+					opts,
+					mountpoint,
+					mounts: [],
+				};
+
+				// create a root node for the fs
+				var mountRoot = type.mount(mount);
+				mountRoot.mount = mount;
+				mount.root = mountRoot;
+
+				if (root) {
+					FS.root = mountRoot;
+				} else if (node) {
+					// set as a mountpoint
+					node.mounted = mount;
+
+					// add the new mount to the current mount's children
+					if (node.mount) {
+						node.mount.mounts.push(mount);
+					}
+				}
+
+				return mountRoot;
+			},
+			unmount(mountpoint) {
+				var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
+
+				if (!FS.isMountpoint(lookup.node)) {
+					throw new FS.ErrnoError(28);
+				}
+
+				// destroy the nodes for this mount, and all its child mounts
+				var node = lookup.node;
+				var mount = node.mounted;
+				var mounts = FS.getMounts(mount);
+
+				Object.keys(FS.nameTable).forEach((hash) => {
+					var current = FS.nameTable[hash];
+
+					while (current) {
+						var next = current.name_next;
+
+						if (mounts.includes(current.mount)) {
+							FS.destroyNode(current);
+						}
+
+						current = next;
+					}
+				});
+
+				// no longer a mountpoint
+				node.mounted = null;
+
+				// remove this mount from the child mounts
+				var idx = node.mount.mounts.indexOf(mount);
+				assert(idx !== -1);
+				node.mount.mounts.splice(idx, 1);
+			},
+			lookup(parent, name) {
+				return parent.node_ops.lookup(parent, name);
+			},
+			mknod(path, mode, dev) {
+				var lookup = FS.lookupPath(path, { parent: true });
+				var parent = lookup.node;
+				var name = PATH.basename(path);
+				if (!name || name === "." || name === "..") {
+					throw new FS.ErrnoError(28);
+				}
+				var errCode = FS.mayCreate(parent, name);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				if (!parent.node_ops.mknod) {
+					throw new FS.ErrnoError(63);
+				}
+				return parent.node_ops.mknod(parent, name, mode, dev);
+			},
+			statfs(path) {
+				// NOTE: None of the defaults here are true. We're just returning safe and
+				//       sane values.
+				var rtn = {
+					bsize: 4096,
+					frsize: 4096,
+					blocks: 1e6,
+					bfree: 5e5,
+					bavail: 5e5,
+					files: FS.nextInode,
+					ffree: FS.nextInode - 1,
+					fsid: 42,
+					flags: 2,
+					namelen: 255,
+				};
+
+				var parent = FS.lookupPath(path, { follow: true }).node;
+				if (parent?.node_ops.statfs) {
+					Object.assign(rtn, parent.node_ops.statfs(parent.mount.opts.root));
+				}
+				return rtn;
+			},
+			create(path, mode = 0o666) {
+				mode &= 4095;
+				mode |= 32768;
+				return FS.mknod(path, mode, 0);
+			},
+			mkdir(path, mode = 0o777) {
+				mode &= 511 | 512;
+				mode |= 16384;
+				return FS.mknod(path, mode, 0);
+			},
+			mkdirTree(path, mode) {
+				var dirs = path.split("/");
+				var d = "";
+				for (var i = 0; i < dirs.length; ++i) {
+					if (!dirs[i]) continue;
+					d += "/" + dirs[i];
+					try {
+						FS.mkdir(d, mode);
+					} catch (e) {
+						if (e.errno != 20) throw e;
+					}
+				}
+			},
+			mkdev(path, mode, dev) {
+				if (typeof dev == "undefined") {
+					dev = mode;
+					mode = 0o666;
+				}
+				mode |= 8192;
+				return FS.mknod(path, mode, dev);
+			},
+			symlink(oldpath, newpath) {
+				if (!PATH_FS.resolve(oldpath)) {
+					throw new FS.ErrnoError(44);
+				}
+				var lookup = FS.lookupPath(newpath, { parent: true });
+				var parent = lookup.node;
+				if (!parent) {
+					throw new FS.ErrnoError(44);
+				}
+				var newname = PATH.basename(newpath);
+				var errCode = FS.mayCreate(parent, newname);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				if (!parent.node_ops.symlink) {
+					throw new FS.ErrnoError(63);
+				}
+				return parent.node_ops.symlink(parent, newname, oldpath);
+			},
+			rename(old_path, new_path) {
+				var old_dirname = PATH.dirname(old_path);
+				var new_dirname = PATH.dirname(new_path);
+				var old_name = PATH.basename(old_path);
+				var new_name = PATH.basename(new_path);
+				// parents must exist
+				var lookup, old_dir, new_dir;
+
+				// let the errors from non existent directories percolate up
+				lookup = FS.lookupPath(old_path, { parent: true });
+				old_dir = lookup.node;
+				lookup = FS.lookupPath(new_path, { parent: true });
+				new_dir = lookup.node;
+
+				if (!old_dir || !new_dir) throw new FS.ErrnoError(44);
+				// need to be part of the same mount
+				if (old_dir.mount !== new_dir.mount) {
+					throw new FS.ErrnoError(75);
+				}
+				// source must exist
+				var old_node = FS.lookupNode(old_dir, old_name);
+				// old path should not be an ancestor of the new path
+				var relative = PATH_FS.relative(old_path, new_dirname);
+				if (relative.charAt(0) !== ".") {
+					throw new FS.ErrnoError(28);
+				}
+				// new path should not be an ancestor of the old path
+				relative = PATH_FS.relative(new_path, old_dirname);
+				if (relative.charAt(0) !== ".") {
+					throw new FS.ErrnoError(55);
+				}
+				// see if the new path already exists
+				var new_node;
+				try {
+					new_node = FS.lookupNode(new_dir, new_name);
+				} catch (e) {
+					// not fatal
+				}
+				// early out if nothing needs to change
+				if (old_node === new_node) {
+					return;
+				}
+				// we'll need to delete the old entry
+				var isdir = FS.isDir(old_node.mode);
+				var errCode = FS.mayDelete(old_dir, old_name, isdir);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				// need delete permissions if we'll be overwriting.
+				// need create permissions if new doesn't already exist.
+				errCode = new_node
+					? FS.mayDelete(new_dir, new_name, isdir)
+					: FS.mayCreate(new_dir, new_name);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				if (!old_dir.node_ops.rename) {
+					throw new FS.ErrnoError(63);
+				}
+				if (
+					FS.isMountpoint(old_node) ||
+					(new_node && FS.isMountpoint(new_node))
+				) {
+					throw new FS.ErrnoError(10);
+				}
+				// if we are going to change the parent, check write permissions
+				if (new_dir !== old_dir) {
+					errCode = FS.nodePermissions(old_dir, "w");
+					if (errCode) {
+						throw new FS.ErrnoError(errCode);
+					}
+				}
+				// remove the node from the lookup hash
+				FS.hashRemoveNode(old_node);
+				// do the underlying fs rename
+				try {
+					old_dir.node_ops.rename(old_node, new_dir, new_name);
+					// update old node (we do this here to avoid each backend
+					// needing to)
+					old_node.parent = new_dir;
+				} catch (e) {
+					throw e;
+				} finally {
+					// add the node back to the hash (in case node_ops.rename
+					// changed its name)
+					FS.hashAddNode(old_node);
+				}
+			},
+			rmdir(path) {
+				var lookup = FS.lookupPath(path, { parent: true });
+				var parent = lookup.node;
+				var name = PATH.basename(path);
+				var node = FS.lookupNode(parent, name);
+				var errCode = FS.mayDelete(parent, name, true);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				if (!parent.node_ops.rmdir) {
+					throw new FS.ErrnoError(63);
+				}
+				if (FS.isMountpoint(node)) {
+					throw new FS.ErrnoError(10);
+				}
+				parent.node_ops.rmdir(parent, name);
+				FS.destroyNode(node);
+			},
+			readdir(path) {
+				var lookup = FS.lookupPath(path, { follow: true });
+				var node = lookup.node;
+				if (!node.node_ops.readdir) {
+					throw new FS.ErrnoError(54);
+				}
+				return node.node_ops.readdir(node);
+			},
+			unlink(path) {
+				var lookup = FS.lookupPath(path, { parent: true });
+				var parent = lookup.node;
+				if (!parent) {
+					throw new FS.ErrnoError(44);
+				}
+				var name = PATH.basename(path);
+				var node = FS.lookupNode(parent, name);
+				var errCode = FS.mayDelete(parent, name, false);
+				if (errCode) {
+					// According to POSIX, we should map EISDIR to EPERM, but
+					// we instead do what Linux does (and we must, as we use
+					// the musl linux libc).
+					throw new FS.ErrnoError(errCode);
+				}
+				if (!parent.node_ops.unlink) {
+					throw new FS.ErrnoError(63);
+				}
+				if (FS.isMountpoint(node)) {
+					throw new FS.ErrnoError(10);
+				}
+				parent.node_ops.unlink(parent, name);
+				FS.destroyNode(node);
+			},
+			readlink(path) {
+				var lookup = FS.lookupPath(path);
+				var link = lookup.node;
+				if (!link) {
+					throw new FS.ErrnoError(44);
+				}
+				if (!link.node_ops.readlink) {
+					throw new FS.ErrnoError(28);
+				}
+				return link.node_ops.readlink(link);
+			},
+			stat(path, dontFollow) {
+				var lookup = FS.lookupPath(path, { follow: !dontFollow });
+				var node = lookup.node;
+				if (!node) {
+					throw new FS.ErrnoError(44);
+				}
+				if (!node.node_ops.getattr) {
+					throw new FS.ErrnoError(63);
+				}
+				return node.node_ops.getattr(node);
+			},
+			lstat(path) {
+				return FS.stat(path, true);
+			},
+			chmod(path, mode, dontFollow) {
+				var node;
+				if (typeof path == "string") {
+					var lookup = FS.lookupPath(path, { follow: !dontFollow });
+					node = lookup.node;
+				} else {
+					node = path;
+				}
+				if (!node.node_ops.setattr) {
+					throw new FS.ErrnoError(63);
+				}
+				node.node_ops.setattr(node, {
+					mode: (mode & 4095) | (node.mode & ~4095),
+					ctime: Date.now(),
+				});
+			},
+			lchmod(path, mode) {
+				FS.chmod(path, mode, true);
+			},
+			fchmod(fd, mode) {
+				var stream = FS.getStreamChecked(fd);
+				FS.chmod(stream.node, mode);
+			},
+			chown(path, uid, gid, dontFollow) {
+				var node;
+				if (typeof path == "string") {
+					var lookup = FS.lookupPath(path, { follow: !dontFollow });
+					node = lookup.node;
+				} else {
+					node = path;
+				}
+				if (!node.node_ops.setattr) {
+					throw new FS.ErrnoError(63);
+				}
+				node.node_ops.setattr(node, {
+					timestamp: Date.now(),
+					// we ignore the uid / gid for now
+				});
+			},
+			lchown(path, uid, gid) {
+				FS.chown(path, uid, gid, true);
+			},
+			fchown(fd, uid, gid) {
+				var stream = FS.getStreamChecked(fd);
+				FS.chown(stream.node, uid, gid);
+			},
+			truncate(path, len) {
+				if (len < 0) {
+					throw new FS.ErrnoError(28);
+				}
+				var node;
+				if (typeof path == "string") {
+					var lookup = FS.lookupPath(path, { follow: true });
+					node = lookup.node;
+				} else {
+					node = path;
+				}
+				if (!node.node_ops.setattr) {
+					throw new FS.ErrnoError(63);
+				}
+				if (FS.isDir(node.mode)) {
+					throw new FS.ErrnoError(31);
+				}
+				if (!FS.isFile(node.mode)) {
+					throw new FS.ErrnoError(28);
+				}
+				var errCode = FS.nodePermissions(node, "w");
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				node.node_ops.setattr(node, {
+					size: len,
+					timestamp: Date.now(),
+				});
+			},
+			ftruncate(fd, len) {
+				var stream = FS.getStreamChecked(fd);
+				if ((stream.flags & 2097155) === 0) {
+					throw new FS.ErrnoError(28);
+				}
+				FS.truncate(stream.node, len);
+			},
+			utime(path, atime, mtime) {
+				var lookup = FS.lookupPath(path, { follow: true });
+				var node = lookup.node;
+				node.node_ops.setattr(node, {
+					atime: atime,
+					mtime: mtime,
+				});
+			},
+			open(path, flags, mode = 0o666) {
+				if (path === "") {
+					throw new FS.ErrnoError(44);
+				}
+				flags = typeof flags == "string" ? FS_modeStringToFlags(flags) : flags;
+				if (flags & 64) {
+					mode = (mode & 4095) | 32768;
+				} else {
+					mode = 0;
+				}
+				var node;
+				if (typeof path == "object") {
+					node = path;
+				} else {
+					// noent_okay makes it so that if the final component of the path
+					// doesn't exist, lookupPath returns `node: undefined`. `path` will be
+					// updated to point to the target of all symlinks.
+					var lookup = FS.lookupPath(path, {
+						follow: !(flags & 131072),
+						noent_okay: true,
+					});
+					node = lookup.node;
+					path = lookup.path;
+				}
+				// perhaps we need to create the node
+				var created = false;
+				if (flags & 64) {
+					if (node) {
+						// if O_CREAT and O_EXCL are set, error out if the node already exists
+						if (flags & 128) {
+							throw new FS.ErrnoError(20);
+						}
+					} else {
+						// node doesn't exist, try to create it
+						node = FS.mknod(path, mode, 0);
+						created = true;
+					}
+				}
+				if (!node) {
+					throw new FS.ErrnoError(44);
+				}
+				// can't truncate a device
+				if (FS.isChrdev(node.mode)) {
+					flags &= ~512;
+				}
+				// if asked only for a directory, then this must be one
+				if (flags & 65536 && !FS.isDir(node.mode)) {
+					throw new FS.ErrnoError(54);
+				}
+				// check permissions, if this is not a file we just created now (it is ok to
+				// create and write to a file with read-only permissions; it is read-only
+				// for later use)
+				if (!created) {
+					var errCode = FS.mayOpen(node, flags);
+					if (errCode) {
+						throw new FS.ErrnoError(errCode);
+					}
+				}
+				// do truncation if necessary
+				if (flags & 512 && !created) {
+					FS.truncate(node, 0);
+				}
+				// we've already handled these, don't pass down to the underlying vfs
+				flags &= ~(128 | 512 | 131072);
+
+				// register the stream with the filesystem
+				var stream = FS.createStream({
+					node,
+					path: FS.getPath(node), // we want the absolute path to the node
+					flags,
+					seekable: true,
+					position: 0,
+					stream_ops: node.stream_ops,
+					// used by the file family libc calls (fopen, fwrite, ferror, etc.)
+					ungotten: [],
+					error: false,
+				});
+				// call the new stream's open function
+				if (stream.stream_ops.open) {
+					stream.stream_ops.open(stream);
+				}
+				if (Module["logReadFiles"] && !(flags & 1)) {
+					if (!(path in FS.readFiles)) {
+						FS.readFiles[path] = 1;
+					}
+				}
+				return stream;
+			},
+			close(stream) {
+				if (FS.isClosed(stream)) {
+					throw new FS.ErrnoError(8);
+				}
+				if (stream.getdents) stream.getdents = null; // free readdir state
+				try {
+					if (stream.stream_ops.close) {
+						stream.stream_ops.close(stream);
+					}
+				} catch (e) {
+					throw e;
+				} finally {
+					FS.closeStream(stream.fd);
+				}
+				stream.fd = null;
+			},
+			isClosed(stream) {
+				return stream.fd === null;
+			},
+			llseek(stream, offset, whence) {
+				if (FS.isClosed(stream)) {
+					throw new FS.ErrnoError(8);
+				}
+				if (!stream.seekable || !stream.stream_ops.llseek) {
+					throw new FS.ErrnoError(70);
+				}
+				if (whence != 0 && whence != 1 && whence != 2) {
+					throw new FS.ErrnoError(28);
+				}
+				stream.position = stream.stream_ops.llseek(stream, offset, whence);
+				stream.ungotten = [];
+				return stream.position;
+			},
+			read(stream, buffer, offset, length, position) {
+				assert(offset >= 0);
+				if (length < 0 || position < 0) {
+					throw new FS.ErrnoError(28);
+				}
+				if (FS.isClosed(stream)) {
+					throw new FS.ErrnoError(8);
+				}
+				if ((stream.flags & 2097155) === 1) {
+					throw new FS.ErrnoError(8);
+				}
+				if (FS.isDir(stream.node.mode)) {
+					throw new FS.ErrnoError(31);
+				}
+				if (!stream.stream_ops.read) {
+					throw new FS.ErrnoError(28);
+				}
+				var seeking = typeof position != "undefined";
+				if (!seeking) {
+					position = stream.position;
+				} else if (!stream.seekable) {
+					throw new FS.ErrnoError(70);
+				}
+				var bytesRead = stream.stream_ops.read(
+					stream,
+					buffer,
+					offset,
+					length,
+					position,
+				);
+				if (!seeking) stream.position += bytesRead;
+				return bytesRead;
+			},
+			write(stream, buffer, offset, length, position, canOwn) {
+				assert(offset >= 0);
+				if (length < 0 || position < 0) {
+					throw new FS.ErrnoError(28);
+				}
+				if (FS.isClosed(stream)) {
+					throw new FS.ErrnoError(8);
+				}
+				if ((stream.flags & 2097155) === 0) {
+					throw new FS.ErrnoError(8);
+				}
+				if (FS.isDir(stream.node.mode)) {
+					throw new FS.ErrnoError(31);
+				}
+				if (!stream.stream_ops.write) {
+					throw new FS.ErrnoError(28);
+				}
+				if (stream.seekable && stream.flags & 1024) {
+					// seek to the end before writing in append mode
+					FS.llseek(stream, 0, 2);
+				}
+				var seeking = typeof position != "undefined";
+				if (!seeking) {
+					position = stream.position;
+				} else if (!stream.seekable) {
+					throw new FS.ErrnoError(70);
+				}
+				var bytesWritten = stream.stream_ops.write(
+					stream,
+					buffer,
+					offset,
+					length,
+					position,
+					canOwn,
+				);
+				if (!seeking) stream.position += bytesWritten;
+				return bytesWritten;
+			},
+			allocate(stream, offset, length) {
+				if (FS.isClosed(stream)) {
+					throw new FS.ErrnoError(8);
+				}
+				if (offset < 0 || length <= 0) {
+					throw new FS.ErrnoError(28);
+				}
+				if ((stream.flags & 2097155) === 0) {
+					throw new FS.ErrnoError(8);
+				}
+				if (!FS.isFile(stream.node.mode) && !FS.isDir(stream.node.mode)) {
+					throw new FS.ErrnoError(43);
+				}
+				if (!stream.stream_ops.allocate) {
+					throw new FS.ErrnoError(138);
+				}
+				stream.stream_ops.allocate(stream, offset, length);
+			},
+			mmap(stream, length, position, prot, flags) {
+				// User requests writing to file (prot & PROT_WRITE != 0).
+				// Checking if we have permissions to write to the file unless
+				// MAP_PRIVATE flag is set. According to POSIX spec it is possible
+				// to write to file opened in read-only mode with MAP_PRIVATE flag,
+				// as all modifications will be visible only in the memory of
+				// the current process.
+				if (
+					(prot & 2) !== 0 &&
+					(flags & 2) === 0 &&
+					(stream.flags & 2097155) !== 2
+				) {
+					throw new FS.ErrnoError(2);
+				}
+				if ((stream.flags & 2097155) === 1) {
+					throw new FS.ErrnoError(2);
+				}
+				if (!stream.stream_ops.mmap) {
+					throw new FS.ErrnoError(43);
+				}
+				if (!length) {
+					throw new FS.ErrnoError(28);
+				}
+				return stream.stream_ops.mmap(stream, length, position, prot, flags);
+			},
+			msync(stream, buffer, offset, length, mmapFlags) {
+				assert(offset >= 0);
+				if (!stream.stream_ops.msync) {
+					return 0;
+				}
+				return stream.stream_ops.msync(
+					stream,
+					buffer,
+					offset,
+					length,
+					mmapFlags,
+				);
+			},
+			ioctl(stream, cmd, arg) {
+				if (!stream.stream_ops.ioctl) {
+					throw new FS.ErrnoError(59);
+				}
+				return stream.stream_ops.ioctl(stream, cmd, arg);
+			},
+			readFile(path, opts = {}) {
+				opts.flags = opts.flags || 0;
+				opts.encoding = opts.encoding || "binary";
+				if (opts.encoding !== "utf8" && opts.encoding !== "binary") {
+					throw new Error(`Invalid encoding type "${opts.encoding}"`);
+				}
+				var ret;
+				var stream = FS.open(path, opts.flags);
+				var stat = FS.stat(path);
+				var length = stat.size;
+				var buf = new Uint8Array(length);
+				FS.read(stream, buf, 0, length, 0);
+				if (opts.encoding === "utf8") {
+					ret = UTF8ArrayToString(buf);
+				} else if (opts.encoding === "binary") {
+					ret = buf;
+				}
+				FS.close(stream);
+				return ret;
+			},
+			writeFile(path, data, opts = {}) {
+				opts.flags = opts.flags || 577;
+				var stream = FS.open(path, opts.flags, opts.mode);
+				if (typeof data == "string") {
+					var buf = new Uint8Array(lengthBytesUTF8(data) + 1);
+					var actualNumBytes = stringToUTF8Array(data, buf, 0, buf.length);
+					FS.write(stream, buf, 0, actualNumBytes, undefined, opts.canOwn);
+				} else if (ArrayBuffer.isView(data)) {
+					FS.write(stream, data, 0, data.byteLength, undefined, opts.canOwn);
+				} else {
+					throw new Error("Unsupported data type");
+				}
+				FS.close(stream);
+			},
+			cwd: () => FS.currentPath,
+			chdir(path) {
+				var lookup = FS.lookupPath(path, { follow: true });
+				if (lookup.node === null) {
+					throw new FS.ErrnoError(44);
+				}
+				if (!FS.isDir(lookup.node.mode)) {
+					throw new FS.ErrnoError(54);
+				}
+				var errCode = FS.nodePermissions(lookup.node, "x");
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				FS.currentPath = lookup.path;
+			},
+			createDefaultDirectories() {
+				FS.mkdir("/tmp");
+				FS.mkdir("/home");
+				FS.mkdir("/home/web_user");
+			},
+			createDefaultDevices() {
+				// create /dev
+				FS.mkdir("/dev");
+				// setup /dev/null
+				FS.registerDevice(FS.makedev(1, 3), {
+					read: () => 0,
+					write: (stream, buffer, offset, length, pos) => length,
+					llseek: () => 0,
+				});
+				FS.mkdev("/dev/null", FS.makedev(1, 3));
+				// setup /dev/tty and /dev/tty1
+				// stderr needs to print output using err() rather than out()
+				// so we register a second tty just for it.
+				TTY.register(FS.makedev(5, 0), TTY.default_tty_ops);
+				TTY.register(FS.makedev(6, 0), TTY.default_tty1_ops);
+				FS.mkdev("/dev/tty", FS.makedev(5, 0));
+				FS.mkdev("/dev/tty1", FS.makedev(6, 0));
+				// setup /dev/[u]random
+				// use a buffer to avoid overhead of individual crypto calls per byte
+				var randomBuffer = new Uint8Array(1024),
+					randomLeft = 0;
+				var randomByte = () => {
+					if (randomLeft === 0) {
+						randomLeft = randomFill(randomBuffer).byteLength;
+					}
+					return randomBuffer[--randomLeft];
+				};
+				FS.createDevice("/dev", "random", randomByte);
+				FS.createDevice("/dev", "urandom", randomByte);
+				// we're not going to emulate the actual shm device,
+				// just create the tmp dirs that reside in it commonly
+				FS.mkdir("/dev/shm");
+				FS.mkdir("/dev/shm/tmp");
+			},
+			createSpecialDirectories() {
+				// create /proc/self/fd which allows /proc/self/fd/6 => readlink gives the
+				// name of the stream for fd 6 (see test_unistd_ttyname)
+				FS.mkdir("/proc");
+				var proc_self = FS.mkdir("/proc/self");
+				FS.mkdir("/proc/self/fd");
+				FS.mount(
+					{
+						mount() {
+							var node = FS.createNode(proc_self, "fd", 16895, 73);
+							node.stream_ops = {
+								llseek: MEMFS.stream_ops.llseek,
+							};
+							node.node_ops = {
+								lookup(parent, name) {
+									var fd = +name;
+									var stream = FS.getStreamChecked(fd);
+									var ret = {
+										parent: null,
+										mount: { mountpoint: "fake" },
+										node_ops: { readlink: () => stream.path },
+										id: fd + 1,
+									};
+									ret.parent = ret; // make it look like a simple root node
+									return ret;
+								},
+								readdir() {
+									return Array.from(FS.streams.entries())
+										.filter(([k, v]) => v)
+										.map(([k, v]) => k.toString());
+								},
+							};
+							return node;
+						},
+					},
+					{},
+					"/proc/self/fd",
+				);
+			},
+			createStandardStreams(input, output, error) {
+				// TODO deprecate the old functionality of a single
+				// input / output callback and that utilizes FS.createDevice
+				// and instead require a unique set of stream ops
+
+				// by default, we symlink the standard streams to the
+				// default tty devices. however, if the standard streams
+				// have been overwritten we create a unique device for
+				// them instead.
+				if (input) {
+					FS.createDevice("/dev", "stdin", input);
+				} else {
+					FS.symlink("/dev/tty", "/dev/stdin");
+				}
+				if (output) {
+					FS.createDevice("/dev", "stdout", null, output);
+				} else {
+					FS.symlink("/dev/tty", "/dev/stdout");
+				}
+				if (error) {
+					FS.createDevice("/dev", "stderr", null, error);
+				} else {
+					FS.symlink("/dev/tty1", "/dev/stderr");
+				}
+
+				// open default streams for the stdin, stdout and stderr devices
+				var stdin = FS.open("/dev/stdin", 0);
+				var stdout = FS.open("/dev/stdout", 1);
+				var stderr = FS.open("/dev/stderr", 1);
+				assert(stdin.fd === 0, `invalid handle for stdin (${stdin.fd})`);
+				assert(stdout.fd === 1, `invalid handle for stdout (${stdout.fd})`);
+				assert(stderr.fd === 2, `invalid handle for stderr (${stderr.fd})`);
+			},
+			staticInit() {
+				FS.nameTable = new Array(4096);
+
+				FS.mount(MEMFS, {}, "/");
+
+				FS.createDefaultDirectories();
+				FS.createDefaultDevices();
+				FS.createSpecialDirectories();
+
+				FS.filesystems = {
+					MEMFS: MEMFS,
+				};
+			},
+			init(input, output, error) {
+				assert(
+					!FS.initialized,
+					"FS.init was previously called. If you want to initialize later with custom parameters, remove any earlier calls (note that one is automatically added to the generated code)",
+				);
+				FS.initialized = true;
+
+				// Allow Module.stdin etc. to provide defaults, if none explicitly passed to us here
+				input ??= Module["stdin"];
+				output ??= Module["stdout"];
+				error ??= Module["stderr"];
+
+				FS.createStandardStreams(input, output, error);
+			},
+			quit() {
+				FS.initialized = false;
+				// force-flush all streams, so we get musl std streams printed out
+				_fflush(0);
+				// close all of our streams
+				for (var i = 0; i < FS.streams.length; i++) {
+					var stream = FS.streams[i];
+					if (!stream) {
+						continue;
+					}
+					FS.close(stream);
+				}
+			},
+			findObject(path, dontResolveLastLink) {
+				var ret = FS.analyzePath(path, dontResolveLastLink);
+				if (!ret.exists) {
+					return null;
+				}
+				return ret.object;
+			},
+			analyzePath(path, dontResolveLastLink) {
+				// operate from within the context of the symlink's target
+				try {
+					var lookup = FS.lookupPath(path, { follow: !dontResolveLastLink });
+					path = lookup.path;
+				} catch (e) {}
+				var ret = {
+					isRoot: false,
+					exists: false,
+					error: 0,
+					name: null,
+					path: null,
+					object: null,
+					parentExists: false,
+					parentPath: null,
+					parentObject: null,
+				};
+				try {
+					var lookup = FS.lookupPath(path, { parent: true });
+					ret.parentExists = true;
+					ret.parentPath = lookup.path;
+					ret.parentObject = lookup.node;
+					ret.name = PATH.basename(path);
+					lookup = FS.lookupPath(path, { follow: !dontResolveLastLink });
+					ret.exists = true;
+					ret.path = lookup.path;
+					ret.object = lookup.node;
+					ret.name = lookup.node.name;
+					ret.isRoot = lookup.path === "/";
+				} catch (e) {
+					ret.error = e.errno;
+				}
+				return ret;
+			},
+			createPath(parent, path, canRead, canWrite) {
+				parent = typeof parent == "string" ? parent : FS.getPath(parent);
+				var parts = path.split("/").reverse();
+				while (parts.length) {
+					var part = parts.pop();
+					if (!part) continue;
+					var current = PATH.join2(parent, part);
+					try {
+						FS.mkdir(current);
+					} catch (e) {
+						// ignore EEXIST
+					}
+					parent = current;
+				}
+				return current;
+			},
+			createFile(parent, name, properties, canRead, canWrite) {
+				var path = PATH.join2(
+					typeof parent == "string" ? parent : FS.getPath(parent),
+					name,
+				);
+				var mode = FS_getMode(canRead, canWrite);
+				return FS.create(path, mode);
+			},
+			createDataFile(parent, name, data, canRead, canWrite, canOwn) {
+				var path = name;
+				if (parent) {
+					parent = typeof parent == "string" ? parent : FS.getPath(parent);
+					path = name ? PATH.join2(parent, name) : parent;
+				}
+				var mode = FS_getMode(canRead, canWrite);
+				var node = FS.create(path, mode);
+				if (data) {
+					if (typeof data == "string") {
+						var arr = new Array(data.length);
+						for (var i = 0, len = data.length; i < len; ++i)
+							arr[i] = data.charCodeAt(i);
+						data = arr;
+					}
+					// make sure we can write to the file
+					FS.chmod(node, mode | 146);
+					var stream = FS.open(node, 577);
+					FS.write(stream, data, 0, data.length, 0, canOwn);
+					FS.close(stream);
+					FS.chmod(node, mode);
+				}
+			},
+			createDevice(parent, name, input, output) {
+				var path = PATH.join2(
+					typeof parent == "string" ? parent : FS.getPath(parent),
+					name,
+				);
+				var mode = FS_getMode(!!input, !!output);
+				FS.createDevice.major ??= 64;
+				var dev = FS.makedev(FS.createDevice.major++, 0);
+				// Create a fake device that a set of stream ops to emulate
+				// the old behavior.
+				FS.registerDevice(dev, {
+					open(stream) {
+						stream.seekable = false;
+					},
+					close(stream) {
+						// flush any pending line data
+						if (output?.buffer?.length) {
+							output(10);
+						}
+					},
+					read(stream, buffer, offset, length, pos /* ignored */) {
+						var bytesRead = 0;
+						for (var i = 0; i < length; i++) {
+							var result;
+							try {
+								result = input();
+							} catch (e) {
+								throw new FS.ErrnoError(29);
+							}
+							if (result === undefined && bytesRead === 0) {
+								throw new FS.ErrnoError(6);
+							}
+							if (result === null || result === undefined) break;
+							bytesRead++;
+							buffer[offset + i] = result;
+						}
+						if (bytesRead) {
+							stream.node.atime = Date.now();
+						}
+						return bytesRead;
+					},
+					write(stream, buffer, offset, length, pos) {
+						for (var i = 0; i < length; i++) {
+							try {
+								output(buffer[offset + i]);
+							} catch (e) {
+								throw new FS.ErrnoError(29);
+							}
+						}
+						if (length) {
+							stream.node.mtime = stream.node.ctime = Date.now();
+						}
+						return i;
+					},
+				});
+				return FS.mkdev(path, mode, dev);
+			},
+			forceLoadFile(obj) {
+				if (obj.isDevice || obj.isFolder || obj.link || obj.contents)
+					return true;
+				if (typeof XMLHttpRequest != "undefined") {
+					throw new Error(
+						"Lazy loading should have been performed (contents set) in createLazyFile, but it was not. Lazy loading only works in web workers. Use --embed-file or --preload-file in emcc on the main thread.",
+					);
+				} else {
+					// Command-line.
+					try {
+						obj.contents = readBinary(obj.url);
+						obj.usedBytes = obj.contents.length;
+					} catch (e) {
+						throw new FS.ErrnoError(29);
+					}
+				}
+			},
+			createLazyFile(parent, name, url, canRead, canWrite) {
+				// Lazy chunked Uint8Array (implements get and length from Uint8Array).
+				// Actual getting is abstracted away for eventual reuse.
+				class LazyUint8Array {
+					lengthKnown = false;
+					chunks = []; // Loaded chunks. Index is the chunk number
+					get(idx) {
+						if (idx > this.length - 1 || idx < 0) {
+							return undefined;
+						}
+						var chunkOffset = idx % this.chunkSize;
+						var chunkNum = (idx / this.chunkSize) | 0;
+						return this.getter(chunkNum)[chunkOffset];
+					}
+					setDataGetter(getter) {
+						this.getter = getter;
+					}
+					cacheLength() {
+						// Find length
+						var xhr = new XMLHttpRequest();
+						xhr.open("HEAD", url, false);
+						xhr.send(null);
+						if (
+							!((xhr.status >= 200 && xhr.status < 300) || xhr.status === 304)
+						)
+							throw new Error(
+								"Couldn't load " + url + ". Status: " + xhr.status,
+							);
+						var datalength = Number(xhr.getResponseHeader("Content-length"));
+						var header;
+						var hasByteServing =
+							(header = xhr.getResponseHeader("Accept-Ranges")) &&
+							header === "bytes";
+						var usesGzip =
+							(header = xhr.getResponseHeader("Content-Encoding")) &&
+							header === "gzip";
+
+						var chunkSize = 1024 * 1024; // Chunk size in bytes
+
+						if (!hasByteServing) chunkSize = datalength;
+
+						// Function to get a range from the remote URL.
+						var doXHR = (from, to) => {
+							if (from > to)
+								throw new Error(
+									"invalid range (" +
+										from +
+										", " +
+										to +
+										") or no bytes requested!",
+								);
+							if (to > datalength - 1)
+								throw new Error(
+									"only " + datalength + " bytes available! programmer error!",
+								);
+
+							// TODO: Use mozResponseArrayBuffer, responseStream, etc. if available.
+							var xhr = new XMLHttpRequest();
+							xhr.open("GET", url, false);
+							if (datalength !== chunkSize)
+								xhr.setRequestHeader("Range", "bytes=" + from + "-" + to);
+
+							// Some hints to the browser that we want binary data.
+							xhr.responseType = "arraybuffer";
+							if (xhr.overrideMimeType) {
+								xhr.overrideMimeType("text/plain; charset=x-user-defined");
+							}
+
+							xhr.send(null);
+							if (
+								!((xhr.status >= 200 && xhr.status < 300) || xhr.status === 304)
+							)
+								throw new Error(
+									"Couldn't load " + url + ". Status: " + xhr.status,
+								);
+							if (xhr.response !== undefined) {
+								return new Uint8Array(
+									/** @type{Array<number>} */ (xhr.response || []),
+								);
+							}
+							return intArrayFromString(xhr.responseText || "", true);
+						};
+						var lazyArray = this;
+						lazyArray.setDataGetter((chunkNum) => {
+							var start = chunkNum * chunkSize;
+							var end = (chunkNum + 1) * chunkSize - 1; // including this byte
+							end = Math.min(end, datalength - 1); // if datalength-1 is selected, this is the last block
+							if (typeof lazyArray.chunks[chunkNum] == "undefined") {
+								lazyArray.chunks[chunkNum] = doXHR(start, end);
+							}
+							if (typeof lazyArray.chunks[chunkNum] == "undefined")
+								throw new Error("doXHR failed!");
+							return lazyArray.chunks[chunkNum];
+						});
+
+						if (usesGzip || !datalength) {
+							// if the server uses gzip or doesn't supply the length, we have to download the whole file to get the (uncompressed) length
+							chunkSize = datalength = 1; // this will force getter(0)/doXHR do download the whole file
+							datalength = this.getter(0).length;
+							chunkSize = datalength;
+							out(
+								"LazyFiles on gzip forces download of the whole file when length is accessed",
+							);
+						}
+
+						this._length = datalength;
+						this._chunkSize = chunkSize;
+						this.lengthKnown = true;
+					}
+					get length() {
+						if (!this.lengthKnown) {
+							this.cacheLength();
+						}
+						return this._length;
+					}
+					get chunkSize() {
+						if (!this.lengthKnown) {
+							this.cacheLength();
+						}
+						return this._chunkSize;
+					}
+				}
+
+				if (typeof XMLHttpRequest != "undefined") {
+					if (!ENVIRONMENT_IS_WORKER)
+						throw "Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc";
+					var lazyArray = new LazyUint8Array();
+					var properties = { isDevice: false, contents: lazyArray };
+				} else {
+					var properties = { isDevice: false, url: url };
+				}
+
+				var node = FS.createFile(parent, name, properties, canRead, canWrite);
+				// This is a total hack, but I want to get this lazy file code out of the
+				// core of MEMFS. If we want to keep this lazy file concept I feel it should
+				// be its own thin LAZYFS proxying calls to MEMFS.
+				if (properties.contents) {
+					node.contents = properties.contents;
+				} else if (properties.url) {
+					node.contents = null;
+					node.url = properties.url;
+				}
+				// Add a function that defers querying the file size until it is asked the first time.
+				Object.defineProperties(node, {
+					usedBytes: {
+						get: function () {
+							return this.contents.length;
+						},
+					},
+				});
+				// override each stream op with one that tries to force load the lazy file first
+				var stream_ops = {};
+				var keys = Object.keys(node.stream_ops);
+				keys.forEach((key) => {
+					var fn = node.stream_ops[key];
+					stream_ops[key] = (...args) => {
+						FS.forceLoadFile(node);
+						return fn(...args);
+					};
+				});
+				function writeChunks(stream, buffer, offset, length, position) {
+					var contents = stream.node.contents;
+					if (position >= contents.length) return 0;
+					var size = Math.min(contents.length - position, length);
+					assert(size >= 0);
+					if (contents.slice) {
+						// normal array
+						for (var i = 0; i < size; i++) {
+							buffer[offset + i] = contents[position + i];
+						}
+					} else {
+						for (var i = 0; i < size; i++) {
+							// LazyUint8Array from sync binary XHR
+							buffer[offset + i] = contents.get(position + i);
+						}
+					}
+					return size;
+				}
+				// use a custom read function
+				stream_ops.read = (stream, buffer, offset, length, position) => {
+					FS.forceLoadFile(node);
+					return writeChunks(stream, buffer, offset, length, position);
+				};
+				// use a custom mmap function
+				stream_ops.mmap = (stream, length, position, prot, flags) => {
+					FS.forceLoadFile(node);
+					var ptr = mmapAlloc(length);
+					if (!ptr) {
+						throw new FS.ErrnoError(48);
+					}
+					writeChunks(stream, HEAP8, ptr, length, position);
+					return { ptr, allocated: true };
+				};
+				node.stream_ops = stream_ops;
+				return node;
+			},
+			absolutePath() {
+				abort("FS.absolutePath has been removed; use PATH_FS.resolve instead");
+			},
+			createFolder() {
+				abort("FS.createFolder has been removed; use FS.mkdir instead");
+			},
+			createLink() {
+				abort("FS.createLink has been removed; use FS.symlink instead");
+			},
+			joinPath() {
+				abort("FS.joinPath has been removed; use PATH.join instead");
+			},
+			mmapAlloc() {
+				abort(
+					"FS.mmapAlloc has been replaced by the top level function mmapAlloc",
+				);
+			},
+			standardizePath() {
+				abort(
+					"FS.standardizePath has been removed; use PATH.normalize instead",
+				);
+			},
+		};
+
+		var SYSCALLS = {
+			DEFAULT_POLLMASK: 5,
+			calculateAt(dirfd, path, allowEmpty) {
+				if (PATH.isAbs(path)) {
+					return path;
+				}
+				// relative path
+				var dir;
+				if (dirfd === -100) {
+					dir = FS.cwd();
+				} else {
+					var dirstream = SYSCALLS.getStreamFromFD(dirfd);
+					dir = dirstream.path;
+				}
+				if (path.length == 0) {
+					if (!allowEmpty) {
+						throw new FS.ErrnoError(44);
+					}
+					return dir;
+				}
+				return dir + "/" + path;
+			},
+			doStat(func, path, buf) {
+				var stat = func(path);
+				HEAP32[buf >> 2] = stat.dev;
+				HEAP32[(buf + 4) >> 2] = stat.mode;
+				HEAPU32[(buf + 8) >> 2] = stat.nlink;
+				HEAP32[(buf + 12) >> 2] = stat.uid;
+				HEAP32[(buf + 16) >> 2] = stat.gid;
+				HEAP32[(buf + 20) >> 2] = stat.rdev;
+				(tempI64 = [
+					stat.size >>> 0,
+					((tempDouble = stat.size),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(buf + 24) >> 2] = tempI64[0]),
+					(HEAP32[(buf + 28) >> 2] = tempI64[1]);
+				HEAP32[(buf + 32) >> 2] = 4096;
+				HEAP32[(buf + 36) >> 2] = stat.blocks;
+				var atime = stat.atime.getTime();
+				var mtime = stat.mtime.getTime();
+				var ctime = stat.ctime.getTime();
+				(tempI64 = [
+					Math.floor(atime / 1000) >>> 0,
+					((tempDouble = Math.floor(atime / 1000)),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(buf + 40) >> 2] = tempI64[0]),
+					(HEAP32[(buf + 44) >> 2] = tempI64[1]);
+				HEAPU32[(buf + 48) >> 2] = (atime % 1000) * 1000 * 1000;
+				(tempI64 = [
+					Math.floor(mtime / 1000) >>> 0,
+					((tempDouble = Math.floor(mtime / 1000)),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(buf + 56) >> 2] = tempI64[0]),
+					(HEAP32[(buf + 60) >> 2] = tempI64[1]);
+				HEAPU32[(buf + 64) >> 2] = (mtime % 1000) * 1000 * 1000;
+				(tempI64 = [
+					Math.floor(ctime / 1000) >>> 0,
+					((tempDouble = Math.floor(ctime / 1000)),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(buf + 72) >> 2] = tempI64[0]),
+					(HEAP32[(buf + 76) >> 2] = tempI64[1]);
+				HEAPU32[(buf + 80) >> 2] = (ctime % 1000) * 1000 * 1000;
+				(tempI64 = [
+					stat.ino >>> 0,
+					((tempDouble = stat.ino),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(buf + 88) >> 2] = tempI64[0]),
+					(HEAP32[(buf + 92) >> 2] = tempI64[1]);
+				return 0;
+			},
+			doMsync(addr, stream, len, flags, offset) {
+				if (!FS.isFile(stream.node.mode)) {
+					throw new FS.ErrnoError(43);
+				}
+				if (flags & 2) {
+					// MAP_PRIVATE calls need not to be synced back to underlying fs
+					return 0;
+				}
+				var buffer = HEAPU8.slice(addr, addr + len);
+				FS.msync(stream, buffer, offset, len, flags);
+			},
+			getStreamFromFD(fd) {
+				var stream = FS.getStreamChecked(fd);
+				return stream;
+			},
+			varargs: undefined,
+			getStr(ptr) {
+				var ret = UTF8ToString(ptr);
+				return ret;
+			},
+		};
+		var ___syscall__newselect = function (
+			nfds,
+			readfds,
+			writefds,
+			exceptfds,
+			timeout,
+		) {
+			try {
+				// readfds are supported,
+				// writefds checks socket open status
+				// exceptfds are supported, although on web, such exceptional conditions never arise in web sockets
+				//                          and so the exceptfds list will always return empty.
+				// timeout is supported, although on SOCKFS and PIPEFS these are ignored and always treated as 0 - fully async
+				assert(nfds <= 64, "nfds must be less than or equal to 64"); // fd sets have 64 bits // TODO: this could be 1024 based on current musl headers
+
+				var total = 0;
+
+				var srcReadLow = readfds ? HEAP32[readfds >> 2] : 0,
+					srcReadHigh = readfds ? HEAP32[(readfds + 4) >> 2] : 0;
+				var srcWriteLow = writefds ? HEAP32[writefds >> 2] : 0,
+					srcWriteHigh = writefds ? HEAP32[(writefds + 4) >> 2] : 0;
+				var srcExceptLow = exceptfds ? HEAP32[exceptfds >> 2] : 0,
+					srcExceptHigh = exceptfds ? HEAP32[(exceptfds + 4) >> 2] : 0;
+
+				var dstReadLow = 0,
+					dstReadHigh = 0;
+				var dstWriteLow = 0,
+					dstWriteHigh = 0;
+				var dstExceptLow = 0,
+					dstExceptHigh = 0;
+
+				var allLow =
+					(readfds ? HEAP32[readfds >> 2] : 0) |
+					(writefds ? HEAP32[writefds >> 2] : 0) |
+					(exceptfds ? HEAP32[exceptfds >> 2] : 0);
+				var allHigh =
+					(readfds ? HEAP32[(readfds + 4) >> 2] : 0) |
+					(writefds ? HEAP32[(writefds + 4) >> 2] : 0) |
+					(exceptfds ? HEAP32[(exceptfds + 4) >> 2] : 0);
+
+				var check = (fd, low, high, val) => (fd < 32 ? low & val : high & val);
+
+				for (var fd = 0; fd < nfds; fd++) {
+					var mask = 1 << (fd % 32);
+					if (!check(fd, allLow, allHigh, mask)) {
+						continue; // index isn't in the set
+					}
+
+					var stream = SYSCALLS.getStreamFromFD(fd);
+
+					var flags = SYSCALLS.DEFAULT_POLLMASK;
+
+					if (stream.stream_ops.poll) {
+						var timeoutInMillis = -1;
+						if (timeout) {
+							// select(2) is declared to accept "struct timeval { time_t tv_sec; suseconds_t tv_usec; }".
+							// However, musl passes the two values to the syscall as an array of long values.
+							// Note that sizeof(time_t) != sizeof(long) in wasm32. The former is 8, while the latter is 4.
+							// This means using "C_STRUCTS.timeval.tv_usec" leads to a wrong offset.
+							// So, instead, we use POINTER_SIZE.
+							var tv_sec = readfds ? HEAP32[timeout >> 2] : 0,
+								tv_usec = readfds ? HEAP32[(timeout + 4) >> 2] : 0;
+							timeoutInMillis = (tv_sec + tv_usec / 1000000) * 1000;
+						}
+						flags = stream.stream_ops.poll(stream, timeoutInMillis);
+					}
+
+					if (flags & 1 && check(fd, srcReadLow, srcReadHigh, mask)) {
+						fd < 32
+							? (dstReadLow = dstReadLow | mask)
+							: (dstReadHigh = dstReadHigh | mask);
+						total++;
+					}
+					if (flags & 4 && check(fd, srcWriteLow, srcWriteHigh, mask)) {
+						fd < 32
+							? (dstWriteLow = dstWriteLow | mask)
+							: (dstWriteHigh = dstWriteHigh | mask);
+						total++;
+					}
+					if (flags & 2 && check(fd, srcExceptLow, srcExceptHigh, mask)) {
+						fd < 32
+							? (dstExceptLow = dstExceptLow | mask)
+							: (dstExceptHigh = dstExceptHigh | mask);
+						total++;
+					}
+				}
+
+				if (readfds) {
+					HEAP32[readfds >> 2] = dstReadLow;
+					HEAP32[(readfds + 4) >> 2] = dstReadHigh;
+				}
+				if (writefds) {
+					HEAP32[writefds >> 2] = dstWriteLow;
+					HEAP32[(writefds + 4) >> 2] = dstWriteHigh;
+				}
+				if (exceptfds) {
+					HEAP32[exceptfds >> 2] = dstExceptLow;
+					HEAP32[(exceptfds + 4) >> 2] = dstExceptHigh;
+				}
+
+				return total;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		};
+
+		var SOCKFS = {
+			websocketArgs: {},
+			callbacks: {},
+			on(event, callback) {
+				SOCKFS.callbacks[event] = callback;
+			},
+			emit(event, param) {
+				SOCKFS.callbacks[event]?.(param);
+			},
+			mount(mount) {
+				// The incomming Module['websocket'] can be used for configuring
+				// configuring subprotocol/url, etc
+				SOCKFS.websocketArgs = Module["websocket"] || {};
+				// Add the Event registration mechanism to the exported websocket configuration
+				// object so we can register network callbacks from native JavaScript too.
+				// For more documentation see system/include/emscripten/emscripten.h
+				(Module["websocket"] ??= {})["on"] = SOCKFS.on;
+
+				return FS.createNode(null, "/", 16895, 0);
+			},
+			createSocket(family, type, protocol) {
+				type &= ~526336; // Some applications may pass it; it makes no sense for a single process.
+				var streaming = type == 1;
+				if (streaming && protocol && protocol != 6) {
+					throw new FS.ErrnoError(66); // if SOCK_STREAM, must be tcp or 0.
+				}
+
+				// create our internal socket structure
+				var sock = {
+					family,
+					type,
+					protocol,
+					server: null,
+					error: null, // Used in getsockopt for SOL_SOCKET/SO_ERROR test
+					peers: {},
+					pending: [],
+					recv_queue: [],
+					sock_ops: SOCKFS.websocket_sock_ops,
+				};
+
+				// create the filesystem node to store the socket structure
+				var name = SOCKFS.nextname();
+				var node = FS.createNode(SOCKFS.root, name, 49152, 0);
+				node.sock = sock;
+
+				// and the wrapping stream that enables library functions such
+				// as read and write to indirectly interact with the socket
+				var stream = FS.createStream({
+					path: name,
+					node,
+					flags: 2,
+					seekable: false,
+					stream_ops: SOCKFS.stream_ops,
+				});
+
+				// map the new stream to the socket structure (sockets have a 1:1
+				// relationship with a stream)
+				sock.stream = stream;
+
+				return sock;
+			},
+			getSocket(fd) {
+				var stream = FS.getStream(fd);
+				if (!stream || !FS.isSocket(stream.node.mode)) {
+					return null;
+				}
+				return stream.node.sock;
+			},
+			stream_ops: {
+				poll(stream) {
+					var sock = stream.node.sock;
+					return sock.sock_ops.poll(sock);
+				},
+				ioctl(stream, request, varargs) {
+					var sock = stream.node.sock;
+					return sock.sock_ops.ioctl(sock, request, varargs);
+				},
+				read(stream, buffer, offset, length, position /* ignored */) {
+					var sock = stream.node.sock;
+					var msg = sock.sock_ops.recvmsg(sock, length);
+					if (!msg) {
+						// socket is closed
+						return 0;
+					}
+					buffer.set(msg.buffer, offset);
+					return msg.buffer.length;
+				},
+				write(stream, buffer, offset, length, position /* ignored */) {
+					var sock = stream.node.sock;
+					return sock.sock_ops.sendmsg(sock, buffer, offset, length);
+				},
+				close(stream) {
+					var sock = stream.node.sock;
+					sock.sock_ops.close(sock);
+				},
+			},
+			nextname() {
+				if (!SOCKFS.nextname.current) {
+					SOCKFS.nextname.current = 0;
+				}
+				return `socket[${SOCKFS.nextname.current++}]`;
+			},
+			websocket_sock_ops: {
+				createPeer(sock, addr, port) {
+					var ws;
+
+					if (typeof addr == "object") {
+						ws = addr;
+						addr = null;
+						port = null;
+					}
+
+					if (ws) {
+						// for sockets that've already connected (e.g. we're the server)
+						// we can inspect the _socket property for the address
+						if (ws._socket) {
+							addr = ws._socket.remoteAddress;
+							port = ws._socket.remotePort;
+						}
+						// if we're just now initializing a connection to the remote,
+						// inspect the url property
+						else {
+							var result = /ws[s]?:\/\/([^:]+):(\d+)/.exec(ws.url);
+							if (!result) {
+								throw new Error(
+									"WebSocket URL must be in the format ws(s)://address:port",
+								);
+							}
+							addr = result[1];
+							port = parseInt(result[2], 10);
+						}
+					} else {
+						// create the actual websocket object and connect
+						try {
+							// The default value is 'ws://' the replace is needed because the compiler replaces '//' comments with '#'
+							// comments without checking context, so we'd end up with ws:#, the replace swaps the '#' for '//' again.
+							var url = "ws:#".replace("#", "//");
+							// Make the WebSocket subprotocol (Sec-WebSocket-Protocol) default to binary if no configuration is set.
+							var subProtocols = "binary"; // The default value is 'binary'
+							// The default WebSocket options
+							var opts = undefined;
+
+							// Fetch runtime WebSocket URL config.
+							if (SOCKFS.websocketArgs["url"]) {
+								url = SOCKFS.websocketArgs["url"];
+							}
+							// Fetch runtime WebSocket subprotocol config.
+							if (SOCKFS.websocketArgs["subprotocol"]) {
+								subProtocols = SOCKFS.websocketArgs["subprotocol"];
+							} else if (SOCKFS.websocketArgs["subprotocol"] === null) {
+								subProtocols = "null";
+							}
+
+							if (url === "ws://" || url === "wss://") {
+								// Is the supplied URL config just a prefix, if so complete it.
+								var parts = addr.split("/");
+								url =
+									url + parts[0] + ":" + port + "/" + parts.slice(1).join("/");
+							}
+
+							if (subProtocols !== "null") {
+								// The regex trims the string (removes spaces at the beginning and end, then splits the string by
+								// <any space>,<any space> into an Array. Whitespace removal is important for Websockify and ws.
+								subProtocols = subProtocols
+									.replace(/^ +| +$/g, "")
+									.split(/ *, */);
+
+								opts = subProtocols;
+							}
+
+							// If node we use the ws library.
+							var WebSocketConstructor;
+							{
+								WebSocketConstructor = WebSocket;
+							}
+							ws = new WebSocketConstructor(url, opts);
+							ws.binaryType = "arraybuffer";
+						} catch (e) {
+							throw new FS.ErrnoError(23);
+						}
+					}
+
+					var peer = {
+						addr,
+						port,
+						socket: ws,
+						msg_send_queue: [],
+					};
+
+					SOCKFS.websocket_sock_ops.addPeer(sock, peer);
+					SOCKFS.websocket_sock_ops.handlePeerEvents(sock, peer);
+
+					// if this is a bound dgram socket, send the port number first to allow
+					// us to override the ephemeral port reported to us by remotePort on the
+					// remote end.
+					if (sock.type === 2 && typeof sock.sport != "undefined") {
+						peer.msg_send_queue.push(
+							new Uint8Array([
+								255,
+								255,
+								255,
+								255,
+								"p".charCodeAt(0),
+								"o".charCodeAt(0),
+								"r".charCodeAt(0),
+								"t".charCodeAt(0),
+								(sock.sport & 0xff00) >> 8,
+								sock.sport & 0xff,
+							]),
+						);
+					}
+
+					return peer;
+				},
+				getPeer(sock, addr, port) {
+					return sock.peers[addr + ":" + port];
+				},
+				addPeer(sock, peer) {
+					sock.peers[peer.addr + ":" + peer.port] = peer;
+				},
+				removePeer(sock, peer) {
+					delete sock.peers[peer.addr + ":" + peer.port];
+				},
+				handlePeerEvents(sock, peer) {
+					var first = true;
+
+					var handleOpen = function () {
+						sock.connecting = false;
+						SOCKFS.emit("open", sock.stream.fd);
+
+						try {
+							var queued = peer.msg_send_queue.shift();
+							while (queued) {
+								peer.socket.send(queued);
+								queued = peer.msg_send_queue.shift();
+							}
+						} catch (e) {
+							// not much we can do here in the way of proper error handling as we've already
+							// lied and said this data was sent. shut it down.
+							peer.socket.close();
+						}
+					};
+
+					function handleMessage(data) {
+						if (typeof data == "string") {
+							var encoder = new TextEncoder(); // should be utf-8
+							data = encoder.encode(data); // make a typed array from the string
+						} else {
+							assert(data.byteLength !== undefined); // must receive an ArrayBuffer
+							if (data.byteLength == 0) {
+								// An empty ArrayBuffer will emit a pseudo disconnect event
+								// as recv/recvmsg will return zero which indicates that a socket
+								// has performed a shutdown although the connection has not been disconnected yet.
+								return;
+							}
+							data = new Uint8Array(data); // make a typed array view on the array buffer
+						}
+
+						// if this is the port message, override the peer's port with it
+						var wasfirst = first;
+						first = false;
+						if (
+							wasfirst &&
+							data.length === 10 &&
+							data[0] === 255 &&
+							data[1] === 255 &&
+							data[2] === 255 &&
+							data[3] === 255 &&
+							data[4] === "p".charCodeAt(0) &&
+							data[5] === "o".charCodeAt(0) &&
+							data[6] === "r".charCodeAt(0) &&
+							data[7] === "t".charCodeAt(0)
+						) {
+							// update the peer's port and it's key in the peer map
+							var newport = (data[8] << 8) | data[9];
+							SOCKFS.websocket_sock_ops.removePeer(sock, peer);
+							peer.port = newport;
+							SOCKFS.websocket_sock_ops.addPeer(sock, peer);
+							return;
+						}
+
+						sock.recv_queue.push({
+							addr: peer.addr,
+							port: peer.port,
+							data: data,
+						});
+						SOCKFS.emit("message", sock.stream.fd);
+					}
+
+					if (ENVIRONMENT_IS_NODE) {
+						peer.socket.on("open", handleOpen);
+						peer.socket.on("message", function (data, isBinary) {
+							if (!isBinary) {
+								return;
+							}
+							handleMessage(new Uint8Array(data).buffer); // copy from node Buffer -> ArrayBuffer
+						});
+						peer.socket.on("close", function () {
+							SOCKFS.emit("close", sock.stream.fd);
+						});
+						peer.socket.on("error", function (error) {
+							// Although the ws library may pass errors that may be more descriptive than
+							// ECONNREFUSED they are not necessarily the expected error code e.g.
+							// ENOTFOUND on getaddrinfo seems to be node.js specific, so using ECONNREFUSED
+							// is still probably the most useful thing to do.
+							sock.error = 14; // Used in getsockopt for SOL_SOCKET/SO_ERROR test.
+							SOCKFS.emit("error", [
+								sock.stream.fd,
+								sock.error,
+								"ECONNREFUSED: Connection refused",
+							]);
+							// don't throw
+						});
+					} else {
+						peer.socket.onopen = handleOpen;
+						peer.socket.onclose = function () {
+							SOCKFS.emit("close", sock.stream.fd);
+						};
+						peer.socket.onmessage = function peer_socket_onmessage(event) {
+							handleMessage(event.data);
+						};
+						peer.socket.onerror = function (error) {
+							// The WebSocket spec only allows a 'simple event' to be thrown on error,
+							// so we only really know as much as ECONNREFUSED.
+							sock.error = 14; // Used in getsockopt for SOL_SOCKET/SO_ERROR test.
+							SOCKFS.emit("error", [
+								sock.stream.fd,
+								sock.error,
+								"ECONNREFUSED: Connection refused",
+							]);
+						};
+					}
+				},
+				poll(sock) {
+					if (sock.type === 1 && sock.server) {
+						// listen sockets should only say they're available for reading
+						// if there are pending clients.
+						return sock.pending.length ? 64 | 1 : 0;
+					}
+
+					var mask = 0;
+					var dest =
+						sock.type === 1
+							? // we only care about the socket state for connection-based sockets
+								SOCKFS.websocket_sock_ops.getPeer(sock, sock.daddr, sock.dport)
+							: null;
+
+					if (
+						sock.recv_queue.length ||
+						!dest || // connection-less sockets are always ready to read
+						(dest && dest.socket.readyState === dest.socket.CLOSING) ||
+						(dest && dest.socket.readyState === dest.socket.CLOSED)
+					) {
+						// let recv return 0 once closed
+						mask |= 64 | 1;
+					}
+
+					if (
+						!dest || // connection-less sockets are always ready to write
+						(dest && dest.socket.readyState === dest.socket.OPEN)
+					) {
+						mask |= 4;
+					}
+
+					if (
+						(dest && dest.socket.readyState === dest.socket.CLOSING) ||
+						(dest && dest.socket.readyState === dest.socket.CLOSED)
+					) {
+						// When an non-blocking connect fails mark the socket as writable.
+						// Its up to the calling code to then use getsockopt with SO_ERROR to
+						// retrieve the error.
+						// See https://man7.org/linux/man-pages/man2/connect.2.html
+						if (sock.connecting) {
+							mask |= 4;
+						} else {
+							mask |= 16;
+						}
+					}
+
+					return mask;
+				},
+				ioctl(sock, request, arg) {
+					switch (request) {
+						case 21531:
+							var bytes = 0;
+							if (sock.recv_queue.length) {
+								bytes = sock.recv_queue[0].data.length;
+							}
+							HEAP32[arg >> 2] = bytes;
+							return 0;
+						default:
+							return 28;
+					}
+				},
+				close(sock) {
+					// if we've spawned a listen server, close it
+					if (sock.server) {
+						try {
+							sock.server.close();
+						} catch (e) {}
+						sock.server = null;
+					}
+					// close any peer connections
+					var peers = Object.keys(sock.peers);
+					for (var i = 0; i < peers.length; i++) {
+						var peer = sock.peers[peers[i]];
+						try {
+							peer.socket.close();
+						} catch (e) {}
+						SOCKFS.websocket_sock_ops.removePeer(sock, peer);
+					}
+					return 0;
+				},
+				bind(sock, addr, port) {
+					if (
+						typeof sock.saddr != "undefined" ||
+						typeof sock.sport != "undefined"
+					) {
+						throw new FS.ErrnoError(28); // already bound
+					}
+					sock.saddr = addr;
+					sock.sport = port;
+					// in order to emulate dgram sockets, we need to launch a listen server when
+					// binding on a connection-less socket
+					// note: this is only required on the server side
+					if (sock.type === 2) {
+						// close the existing server if it exists
+						if (sock.server) {
+							sock.server.close();
+							sock.server = null;
+						}
+						// swallow error operation not supported error that occurs when binding in the
+						// browser where this isn't supported
+						try {
+							sock.sock_ops.listen(sock, 0);
+						} catch (e) {
+							if (!(e.name === "ErrnoError")) throw e;
+							if (e.errno !== 138) throw e;
+						}
+					}
+				},
+				connect(sock, addr, port) {
+					if (sock.server) {
+						throw new FS.ErrnoError(138);
+					}
+
+					// TODO autobind
+					// if (!sock.addr && sock.type == 2) {
+					// }
+
+					// early out if we're already connected / in the middle of connecting
+					if (
+						typeof sock.daddr != "undefined" &&
+						typeof sock.dport != "undefined"
+					) {
+						var dest = SOCKFS.websocket_sock_ops.getPeer(
+							sock,
+							sock.daddr,
+							sock.dport,
+						);
+						if (dest) {
+							if (dest.socket.readyState === dest.socket.CONNECTING) {
+								throw new FS.ErrnoError(7);
+							} else {
+								throw new FS.ErrnoError(30);
+							}
+						}
+					}
+
+					// add the socket to our peer list and set our
+					// destination address / port to match
+					var peer = SOCKFS.websocket_sock_ops.createPeer(sock, addr, port);
+					sock.daddr = peer.addr;
+					sock.dport = peer.port;
+
+					// because we cannot synchronously block to wait for the WebSocket
+					// connection to complete, we return here pretending that the connection
+					// was a success.
+					sock.connecting = true;
+				},
+				listen(sock, backlog) {
+					if (!ENVIRONMENT_IS_NODE) {
+						throw new FS.ErrnoError(138);
+					}
+				},
+				accept(listensock) {
+					if (!listensock.server || !listensock.pending.length) {
+						throw new FS.ErrnoError(28);
+					}
+					var newsock = listensock.pending.shift();
+					newsock.stream.flags = listensock.stream.flags;
+					return newsock;
+				},
+				getname(sock, peer) {
+					var addr, port;
+					if (peer) {
+						if (sock.daddr === undefined || sock.dport === undefined) {
+							throw new FS.ErrnoError(53);
+						}
+						addr = sock.daddr;
+						port = sock.dport;
+					} else {
+						// TODO saddr and sport will be set for bind()'d UDP sockets, but what
+						// should we be returning for TCP sockets that've been connect()'d?
+						addr = sock.saddr || 0;
+						port = sock.sport || 0;
+					}
+					return { addr, port };
+				},
+				sendmsg(sock, buffer, offset, length, addr, port) {
+					if (sock.type === 2) {
+						// connection-less sockets will honor the message address,
+						// and otherwise fall back to the bound destination address
+						if (addr === undefined || port === undefined) {
+							addr = sock.daddr;
+							port = sock.dport;
+						}
+						// if there was no address to fall back to, error out
+						if (addr === undefined || port === undefined) {
+							throw new FS.ErrnoError(17);
+						}
+					} else {
+						// connection-based sockets will only use the bound
+						addr = sock.daddr;
+						port = sock.dport;
+					}
+
+					// find the peer for the destination address
+					var dest = SOCKFS.websocket_sock_ops.getPeer(sock, addr, port);
+
+					// early out if not connected with a connection-based socket
+					if (sock.type === 1) {
+						if (
+							!dest ||
+							dest.socket.readyState === dest.socket.CLOSING ||
+							dest.socket.readyState === dest.socket.CLOSED
+						) {
+							throw new FS.ErrnoError(53);
+						}
+					}
+
+					// create a copy of the incoming data to send, as the WebSocket API
+					// doesn't work entirely with an ArrayBufferView, it'll just send
+					// the entire underlying buffer
+					if (ArrayBuffer.isView(buffer)) {
+						offset += buffer.byteOffset;
+						buffer = buffer.buffer;
+					}
+
+					var data = buffer.slice(offset, offset + length);
+
+					// if we don't have a cached connectionless UDP datagram connection, or
+					// the TCP socket is still connecting, queue the message to be sent upon
+					// connect, and lie, saying the data was sent now.
+					if (!dest || dest.socket.readyState !== dest.socket.OPEN) {
+						// if we're not connected, open a new connection
+						if (sock.type === 2) {
+							if (
+								!dest ||
+								dest.socket.readyState === dest.socket.CLOSING ||
+								dest.socket.readyState === dest.socket.CLOSED
+							) {
+								dest = SOCKFS.websocket_sock_ops.createPeer(sock, addr, port);
+							}
+						}
+						dest.msg_send_queue.push(data);
+						return length;
+					}
+
+					try {
+						// send the actual data
+						dest.socket.send(data);
+						return length;
+					} catch (e) {
+						throw new FS.ErrnoError(28);
+					}
+				},
+				recvmsg(sock, length) {
+					// http://pubs.opengroup.org/onlinepubs/7908799/xns/recvmsg.html
+					if (sock.type === 1 && sock.server) {
+						// tcp servers should not be recv()'ing on the listen socket
+						throw new FS.ErrnoError(53);
+					}
+
+					var queued = sock.recv_queue.shift();
+					if (!queued) {
+						if (sock.type === 1) {
+							var dest = SOCKFS.websocket_sock_ops.getPeer(
+								sock,
+								sock.daddr,
+								sock.dport,
+							);
+
+							if (!dest) {
+								// if we have a destination address but are not connected, error out
+								throw new FS.ErrnoError(53);
+							}
+							if (
+								dest.socket.readyState === dest.socket.CLOSING ||
+								dest.socket.readyState === dest.socket.CLOSED
+							) {
+								// return null if the socket has closed
+								return null;
+							}
+							// else, our socket is in a valid state but truly has nothing available
+							throw new FS.ErrnoError(6);
+						}
+						throw new FS.ErrnoError(6);
+					}
+
+					// queued.data will be an ArrayBuffer if it's unadulterated, but if it's
+					// requeued TCP data it'll be an ArrayBufferView
+					var queuedLength = queued.data.byteLength || queued.data.length;
+					var queuedOffset = queued.data.byteOffset || 0;
+					var queuedBuffer = queued.data.buffer || queued.data;
+					var bytesRead = Math.min(length, queuedLength);
+					var res = {
+						buffer: new Uint8Array(queuedBuffer, queuedOffset, bytesRead),
+						addr: queued.addr,
+						port: queued.port,
+					};
+
+					// push back any unread data for TCP connections
+					if (sock.type === 1 && bytesRead < queuedLength) {
+						var bytesRemaining = queuedLength - bytesRead;
+						queued.data = new Uint8Array(
+							queuedBuffer,
+							queuedOffset + bytesRead,
+							bytesRemaining,
+						);
+						sock.recv_queue.unshift(queued);
+					}
+
+					return res;
+				},
+			},
+		};
+
+		var getSocketFromFD = (fd) => {
+			var socket = SOCKFS.getSocket(fd);
+			if (!socket) throw new FS.ErrnoError(8);
+			return socket;
+		};
+
+		var Sockets = {
+			BUFFER_SIZE: 10240,
+			MAX_BUFFER_SIZE: 10485760,
+			nextFd: 1,
+			fds: {},
+			nextport: 1,
+			maxport: 65535,
+			peer: null,
+			connections: {},
+			portmap: {},
+			localAddr: 4261412874,
+			addrPool: [
+				33554442, 50331658, 67108874, 83886090, 100663306, 117440522, 134217738,
+				150994954, 167772170, 184549386, 201326602, 218103818, 234881034,
+			],
+		};
+
+		var inetPton4 = (str) => {
+			var b = str.split(".");
+			for (var i = 0; i < 4; i++) {
+				var tmp = Number(b[i]);
+				if (isNaN(tmp)) return null;
+				b[i] = tmp;
+			}
+			return (b[0] | (b[1] << 8) | (b[2] << 16) | (b[3] << 24)) >>> 0;
+		};
+
+		/** @suppress {checkTypes} */
+		var jstoi_q = (str) => parseInt(str);
+		var inetPton6 = (str) => {
+			var words;
+			var w, offset, z, i;
+			/* http://home.deds.nl/~aeron/regex/ */
+			var valid6regx =
+				/^((?=.*::)(?!.*::.+::)(::)?([\dA-F]{1,4}:(:|\b)|){5}|([\dA-F]{1,4}:){6})((([\dA-F]{1,4}((?!\3)::|:\b|$))|(?!\2\3)){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i;
+			var parts = [];
+			if (!valid6regx.test(str)) {
+				return null;
+			}
+			if (str === "::") {
+				return [0, 0, 0, 0, 0, 0, 0, 0];
+			}
+			// Z placeholder to keep track of zeros when splitting the string on ":"
+			if (str.startsWith("::")) {
+				str = str.replace("::", "Z:"); // leading zeros case
+			} else {
+				str = str.replace("::", ":Z:");
+			}
+
+			if (str.indexOf(".") > 0) {
+				// parse IPv4 embedded stress
+				str = str.replace(new RegExp("[.]", "g"), ":");
+				words = str.split(":");
+				words[words.length - 4] =
+					jstoi_q(words[words.length - 4]) +
+					jstoi_q(words[words.length - 3]) * 256;
+				words[words.length - 3] =
+					jstoi_q(words[words.length - 2]) +
+					jstoi_q(words[words.length - 1]) * 256;
+				words = words.slice(0, words.length - 2);
+			} else {
+				words = str.split(":");
+			}
+
+			offset = 0;
+			z = 0;
+			for (w = 0; w < words.length; w++) {
+				if (typeof words[w] == "string") {
+					if (words[w] === "Z") {
+						// compressed zeros - write appropriate number of zero words
+						for (z = 0; z < 8 - words.length + 1; z++) {
+							parts[w + z] = 0;
+						}
+						offset = z - 1;
+					} else {
+						// parse hex to field to 16-bit value and write it in network byte-order
+						parts[w + offset] = _htons(parseInt(words[w], 16));
+					}
+				} else {
+					// parsed IPv4 words
+					parts[w + offset] = words[w];
+				}
+			}
+			return [
+				(parts[1] << 16) | parts[0],
+				(parts[3] << 16) | parts[2],
+				(parts[5] << 16) | parts[4],
+				(parts[7] << 16) | parts[6],
+			];
+		};
+
+		/** @param {number=} addrlen */
+		var writeSockaddr = (sa, family, addr, port, addrlen) => {
+			switch (family) {
+				case 2:
+					addr = inetPton4(addr);
+					zeroMemory(sa, 16);
+					if (addrlen) {
+						HEAP32[addrlen >> 2] = 16;
+					}
+					HEAP16[sa >> 1] = family;
+					HEAP32[(sa + 4) >> 2] = addr;
+					HEAP16[(sa + 2) >> 1] = _htons(port);
+					break;
+				case 10:
+					addr = inetPton6(addr);
+					zeroMemory(sa, 28);
+					if (addrlen) {
+						HEAP32[addrlen >> 2] = 28;
+					}
+					HEAP32[sa >> 2] = family;
+					HEAP32[(sa + 8) >> 2] = addr[0];
+					HEAP32[(sa + 12) >> 2] = addr[1];
+					HEAP32[(sa + 16) >> 2] = addr[2];
+					HEAP32[(sa + 20) >> 2] = addr[3];
+					HEAP16[(sa + 2) >> 1] = _htons(port);
+					break;
+				default:
+					return 5;
+			}
+			return 0;
+		};
+
+		var DNS = {
+			address_map: {
+				id: 1,
+				addrs: {},
+				names: {},
+			},
+			lookup_name(name) {
+				// If the name is already a valid ipv4 / ipv6 address, don't generate a fake one.
+				var res = inetPton4(name);
+				if (res !== null) {
+					return name;
+				}
+				res = inetPton6(name);
+				if (res !== null) {
+					return name;
+				}
+
+				// See if this name is already mapped.
+				var addr;
+
+				if (DNS.address_map.addrs[name]) {
+					addr = DNS.address_map.addrs[name];
+				} else {
+					var id = DNS.address_map.id++;
+					assert(id < 65535, "exceeded max address mappings of 65535");
+
+					addr = "172.29." + (id & 0xff) + "." + (id & 0xff00);
+
+					DNS.address_map.names[addr] = name;
+					DNS.address_map.addrs[name] = addr;
+				}
+
+				return addr;
+			},
+			lookup_addr(addr) {
+				if (DNS.address_map.names[addr]) {
+					return DNS.address_map.names[addr];
+				}
+
+				return null;
+			},
+		};
+		function ___syscall_accept4(fd, addr, addrlen, flags, d1, d2) {
+			try {
+				var sock = getSocketFromFD(fd);
+				var newsock = sock.sock_ops.accept(sock);
+				if (addr) {
+					var errno = writeSockaddr(
+						addr,
+						newsock.family,
+						DNS.lookup_name(newsock.daddr),
+						newsock.dport,
+						addrlen,
+					);
+					assert(!errno);
+				}
+				return newsock.stream.fd;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var inetNtop4 = (addr) =>
+			(addr & 0xff) +
+			"." +
+			((addr >> 8) & 0xff) +
+			"." +
+			((addr >> 16) & 0xff) +
+			"." +
+			((addr >> 24) & 0xff);
+
+		var inetNtop6 = (ints) => {
+			//  ref:  http://www.ietf.org/rfc/rfc2373.txt - section 2.5.4
+			//  Format for IPv4 compatible and mapped  128-bit IPv6 Addresses
+			//  128-bits are split into eight 16-bit words
+			//  stored in network byte order (big-endian)
+			//  |                80 bits               | 16 |      32 bits        |
+			//  +-----------------------------------------------------------------+
+			//  |               10 bytes               |  2 |      4 bytes        |
+			//  +--------------------------------------+--------------------------+
+			//  +               5 words                |  1 |      2 words        |
+			//  +--------------------------------------+--------------------------+
+			//  |0000..............................0000|0000|    IPv4 ADDRESS     | (compatible)
+			//  +--------------------------------------+----+---------------------+
+			//  |0000..............................0000|FFFF|    IPv4 ADDRESS     | (mapped)
+			//  +--------------------------------------+----+---------------------+
+			var str = "";
+			var word = 0;
+			var longest = 0;
+			var lastzero = 0;
+			var zstart = 0;
+			var len = 0;
+			var i = 0;
+			var parts = [
+				ints[0] & 0xffff,
+				ints[0] >> 16,
+				ints[1] & 0xffff,
+				ints[1] >> 16,
+				ints[2] & 0xffff,
+				ints[2] >> 16,
+				ints[3] & 0xffff,
+				ints[3] >> 16,
+			];
+
+			// Handle IPv4-compatible, IPv4-mapped, loopback and any/unspecified addresses
+
+			var hasipv4 = true;
+			var v4part = "";
+			// check if the 10 high-order bytes are all zeros (first 5 words)
+			for (i = 0; i < 5; i++) {
+				if (parts[i] !== 0) {
+					hasipv4 = false;
+					break;
+				}
+			}
+
+			if (hasipv4) {
+				// low-order 32-bits store an IPv4 address (bytes 13 to 16) (last 2 words)
+				v4part = inetNtop4(parts[6] | (parts[7] << 16));
+				// IPv4-mapped IPv6 address if 16-bit value (bytes 11 and 12) == 0xFFFF (6th word)
+				if (parts[5] === -1) {
+					str = "::ffff:";
+					str += v4part;
+					return str;
+				}
+				// IPv4-compatible IPv6 address if 16-bit value (bytes 11 and 12) == 0x0000 (6th word)
+				if (parts[5] === 0) {
+					str = "::";
+					//special case IPv6 addresses
+					if (v4part === "0.0.0.0") v4part = ""; // any/unspecified address
+					if (v4part === "0.0.0.1") v4part = "1"; // loopback address
+					str += v4part;
+					return str;
+				}
+			}
+
+			// Handle all other IPv6 addresses
+
+			// first run to find the longest contiguous zero words
+			for (word = 0; word < 8; word++) {
+				if (parts[word] === 0) {
+					if (word - lastzero > 1) {
+						len = 0;
+					}
+					lastzero = word;
+					len++;
+				}
+				if (len > longest) {
+					longest = len;
+					zstart = word - longest + 1;
+				}
+			}
+
+			for (word = 0; word < 8; word++) {
+				if (longest > 1) {
+					// compress contiguous zeros - to produce "::"
+					if (parts[word] === 0 && word >= zstart && word < zstart + longest) {
+						if (word === zstart) {
+							str += ":";
+							if (zstart === 0) str += ":"; //leading zeros case
+						}
+						continue;
+					}
+				}
+				// converts 16-bit words from big-endian to little-endian before converting to hex string
+				str += Number(_ntohs(parts[word] & 0xffff)).toString(16);
+				str += word < 7 ? ":" : "";
+			}
+			return str;
+		};
+
+		var readSockaddr = (sa, salen) => {
+			// family / port offsets are common to both sockaddr_in and sockaddr_in6
+			var family = HEAP16[sa >> 1];
+			var port = _ntohs(HEAPU16[(sa + 2) >> 1]);
+			var addr;
+
+			switch (family) {
+				case 2:
+					if (salen !== 16) {
+						return { errno: 28 };
+					}
+					addr = HEAP32[(sa + 4) >> 2];
+					addr = inetNtop4(addr);
+					break;
+				case 10:
+					if (salen !== 28) {
+						return { errno: 28 };
+					}
+					addr = [
+						HEAP32[(sa + 8) >> 2],
+						HEAP32[(sa + 12) >> 2],
+						HEAP32[(sa + 16) >> 2],
+						HEAP32[(sa + 20) >> 2],
+					];
+					addr = inetNtop6(addr);
+					break;
+				default:
+					return { errno: 5 };
+			}
+
+			return { family: family, addr: addr, port: port };
+		};
+
+		var getSocketAddress = (addrp, addrlen) => {
+			var info = readSockaddr(addrp, addrlen);
+			if (info.errno) throw new FS.ErrnoError(info.errno);
+			info.addr = DNS.lookup_addr(info.addr) || info.addr;
+			return info;
+		};
+		function ___syscall_bind(fd, addr, addrlen, d1, d2, d3) {
+			try {
+				var sock = getSocketFromFD(fd);
+				var info = getSocketAddress(addr, addrlen);
+				sock.sock_ops.bind(sock, info.addr, info.port);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_chdir(path) {
+			try {
+				path = SYSCALLS.getStr(path);
+				FS.chdir(path);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_chmod(path, mode) {
+			try {
+				path = SYSCALLS.getStr(path);
+				FS.chmod(path, mode);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_connect(fd, addr, addrlen, d1, d2, d3) {
+			try {
+				var sock = getSocketFromFD(fd);
+				var info = getSocketAddress(addr, addrlen);
+				sock.sock_ops.connect(sock, info.addr, info.port);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_dup(fd) {
+			try {
+				var old = SYSCALLS.getStreamFromFD(fd);
+				return FS.dupStream(old).fd;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_faccessat(dirfd, path, amode, flags) {
+			try {
+				path = SYSCALLS.getStr(path);
+				assert(flags === 0 || flags == 512);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				if (amode & ~7) {
+					// need a valid mode
+					return -28;
+				}
+				var lookup = FS.lookupPath(path, { follow: true });
+				var node = lookup.node;
+				if (!node) {
+					return -44;
+				}
+				var perms = "";
+				if (amode & 4) perms += "r";
+				if (amode & 2) perms += "w";
+				if (amode & 1) perms += "x";
+				if (
+					perms /* otherwise, they've just passed F_OK */ &&
+					FS.nodePermissions(node, perms)
+				) {
+					return -2;
+				}
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_fchownat(dirfd, path, owner, group, flags) {
+			try {
+				path = SYSCALLS.getStr(path);
+				var nofollow = flags & 256;
+				flags = flags & ~256;
+				assert(flags === 0);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				(nofollow ? FS.lchown : FS.chown)(path, owner, group);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		/** @suppress {duplicate } */
+		var syscallGetVarargI = () => {
+			assert(SYSCALLS.varargs != undefined);
+			// the `+` prepended here is necessary to convince the JSCompiler that varargs is indeed a number.
+			var ret = HEAP32[+SYSCALLS.varargs >> 2];
+			SYSCALLS.varargs += 4;
+			return ret;
+		};
+		var syscallGetVarargP = syscallGetVarargI;
+
+		function ___syscall_fcntl64(fd, cmd, varargs) {
+			SYSCALLS.varargs = varargs;
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				switch (cmd) {
+					case 0: {
+						var arg = syscallGetVarargI();
+						if (arg < 0) {
+							return -28;
+						}
+						while (FS.streams[arg]) {
+							arg++;
+						}
+						var newStream;
+						newStream = FS.dupStream(stream, arg);
+						return newStream.fd;
+					}
+					case 1:
+					case 2:
+						return 0; // FD_CLOEXEC makes no sense for a single process.
+					case 3:
+						return stream.flags;
+					case 4: {
+						var arg = syscallGetVarargI();
+						stream.flags |= arg;
+						return 0;
+					}
+					case 12: {
+						var arg = syscallGetVarargP();
+						var offset = 0;
+						// We're always unlocked.
+						HEAP16[(arg + offset) >> 1] = 2;
+						return 0;
+					}
+					case 13:
+					case 14:
+						return 0; // Pretend that the locking is successful.
+				}
+				return -28;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_fdatasync(fd) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				return 0; // we can't do anything synchronously; the in-memory FS is already synced to
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_fstat64(fd, buf) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				return SYSCALLS.doStat(FS.stat, stream.path, buf);
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var convertI32PairToI53Checked = (lo, hi) => {
+			assert(lo == lo >>> 0 || lo == (lo | 0)); // lo should either be a i32 or a u32
+			assert(hi === (hi | 0)); // hi should be a i32
+			return (hi + 0x200000) >>> 0 < 0x400001 - !!lo
+				? (lo >>> 0) + hi * 4294967296
+				: NaN;
+		};
+		function ___syscall_ftruncate64(fd, length_low, length_high) {
+			var length = convertI32PairToI53Checked(length_low, length_high);
+
+			try {
+				if (isNaN(length)) return 61;
+				FS.ftruncate(fd, length);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var stringToUTF8 = (str, outPtr, maxBytesToWrite) => {
+			assert(
+				typeof maxBytesToWrite == "number",
+				"stringToUTF8(str, outPtr, maxBytesToWrite) is missing the third parameter that specifies the length of the output buffer!",
+			);
+			return stringToUTF8Array(str, HEAPU8, outPtr, maxBytesToWrite);
+		};
+		function ___syscall_getcwd(buf, size) {
+			try {
+				if (size === 0) return -28;
+				var cwd = FS.cwd();
+				var cwdLengthInBytes = lengthBytesUTF8(cwd) + 1;
+				if (size < cwdLengthInBytes) return -68;
+				stringToUTF8(cwd, buf, size);
+				return cwdLengthInBytes;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_getdents64(fd, dirp, count) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				stream.getdents ||= FS.readdir(stream.path);
+
+				var struct_size = 280;
+				var pos = 0;
+				var off = FS.llseek(stream, 0, 1);
+
+				var startIdx = Math.floor(off / struct_size);
+				var endIdx = Math.min(
+					stream.getdents.length,
+					startIdx + Math.floor(count / struct_size),
+				);
+				for (var idx = startIdx; idx < endIdx; idx++) {
+					var id;
+					var type;
+					var name = stream.getdents[idx];
+					if (name === ".") {
+						id = stream.node.id;
+						type = 4; // DT_DIR
+					} else if (name === "..") {
+						var lookup = FS.lookupPath(stream.path, { parent: true });
+						id = lookup.node.id;
+						type = 4; // DT_DIR
+					} else {
+						var child;
+						try {
+							child = FS.lookupNode(stream.node, name);
+						} catch (e) {
+							// If the entry is not a directory, file, or symlink, nodefs
+							// lookupNode will raise EINVAL. Skip these and continue.
+							if (e?.errno === 28) {
+								continue;
+							}
+							throw e;
+						}
+						id = child.id;
+						type = FS.isChrdev(child.mode)
+							? 2
+							: // DT_CHR, character device.
+								FS.isDir(child.mode)
+								? 4
+								: // DT_DIR, directory.
+									FS.isLink(child.mode)
+									? 10
+									: // DT_LNK, symbolic link.
+										8; // DT_REG, regular file.
+					}
+					assert(id);
+					(tempI64 = [
+						id >>> 0,
+						((tempDouble = id),
+						+Math.abs(tempDouble) >= 1.0
+							? tempDouble > 0.0
+								? +Math.floor(tempDouble / 4294967296.0) >>> 0
+								: ~~+Math.ceil(
+										(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+									) >>> 0
+							: 0),
+					]),
+						(HEAP32[(dirp + pos) >> 2] = tempI64[0]),
+						(HEAP32[(dirp + pos + 4) >> 2] = tempI64[1]);
+					(tempI64 = [
+						((idx + 1) * struct_size) >>> 0,
+						((tempDouble = (idx + 1) * struct_size),
+						+Math.abs(tempDouble) >= 1.0
+							? tempDouble > 0.0
+								? +Math.floor(tempDouble / 4294967296.0) >>> 0
+								: ~~+Math.ceil(
+										(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+									) >>> 0
+							: 0),
+					]),
+						(HEAP32[(dirp + pos + 8) >> 2] = tempI64[0]),
+						(HEAP32[(dirp + pos + 12) >> 2] = tempI64[1]);
+					HEAP16[(dirp + pos + 16) >> 1] = 280;
+					HEAP8[dirp + pos + 18] = type;
+					stringToUTF8(name, dirp + pos + 19, 256);
+					pos += struct_size;
+				}
+				FS.llseek(stream, idx * struct_size, 0);
+				return pos;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_getpeername(fd, addr, addrlen, d1, d2, d3) {
+			try {
+				var sock = getSocketFromFD(fd);
+				if (!sock.daddr) {
+					return -53; // The socket is not connected.
+				}
+				var errno = writeSockaddr(
+					addr,
+					sock.family,
+					DNS.lookup_name(sock.daddr),
+					sock.dport,
+					addrlen,
+				);
+				assert(!errno);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_getsockname(fd, addr, addrlen, d1, d2, d3) {
+			try {
+				var sock = getSocketFromFD(fd);
+				// TODO: sock.saddr should never be undefined, see TODO in websocket_sock_ops.getname
+				var errno = writeSockaddr(
+					addr,
+					sock.family,
+					DNS.lookup_name(sock.saddr || "0.0.0.0"),
+					sock.sport,
+					addrlen,
+				);
+				assert(!errno);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_getsockopt(fd, level, optname, optval, optlen, d1) {
+			try {
+				var sock = getSocketFromFD(fd);
+				// Minimal getsockopt aimed at resolving https://github.com/emscripten-core/emscripten/issues/2211
+				// so only supports SOL_SOCKET with SO_ERROR.
+				if (level === 1) {
+					if (optname === 4) {
+						HEAP32[optval >> 2] = sock.error;
+						HEAP32[optlen >> 2] = 4;
+						sock.error = null; // Clear the error (The SO_ERROR option obtains and then clears this field).
+						return 0;
+					}
+				}
+				return -50; // The option is unknown at the level indicated.
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_ioctl(fd, op, varargs) {
+			SYSCALLS.varargs = varargs;
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				switch (op) {
+					case 21509: {
+						if (!stream.tty) return -59;
+						return 0;
+					}
+					case 21505: {
+						if (!stream.tty) return -59;
+						if (stream.tty.ops.ioctl_tcgets) {
+							var termios = stream.tty.ops.ioctl_tcgets(stream);
+							var argp = syscallGetVarargP();
+							HEAP32[argp >> 2] = termios.c_iflag || 0;
+							HEAP32[(argp + 4) >> 2] = termios.c_oflag || 0;
+							HEAP32[(argp + 8) >> 2] = termios.c_cflag || 0;
+							HEAP32[(argp + 12) >> 2] = termios.c_lflag || 0;
+							for (var i = 0; i < 32; i++) {
+								HEAP8[argp + i + 17] = termios.c_cc[i] || 0;
+							}
+							return 0;
+						}
+						return 0;
+					}
+					case 21510:
+					case 21511:
+					case 21512: {
+						if (!stream.tty) return -59;
+						return 0; // no-op, not actually adjusting terminal settings
+					}
+					case 21506:
+					case 21507:
+					case 21508: {
+						if (!stream.tty) return -59;
+						if (stream.tty.ops.ioctl_tcsets) {
+							var argp = syscallGetVarargP();
+							var c_iflag = HEAP32[argp >> 2];
+							var c_oflag = HEAP32[(argp + 4) >> 2];
+							var c_cflag = HEAP32[(argp + 8) >> 2];
+							var c_lflag = HEAP32[(argp + 12) >> 2];
+							var c_cc = [];
+							for (var i = 0; i < 32; i++) {
+								c_cc.push(HEAP8[argp + i + 17]);
+							}
+							return stream.tty.ops.ioctl_tcsets(stream.tty, op, {
+								c_iflag,
+								c_oflag,
+								c_cflag,
+								c_lflag,
+								c_cc,
+							});
+						}
+						return 0; // no-op, not actually adjusting terminal settings
+					}
+					case 21519: {
+						if (!stream.tty) return -59;
+						var argp = syscallGetVarargP();
+						HEAP32[argp >> 2] = 0;
+						return 0;
+					}
+					case 21520: {
+						if (!stream.tty) return -59;
+						return -28; // not supported
+					}
+					case 21531: {
+						var argp = syscallGetVarargP();
+						return FS.ioctl(stream, op, argp);
+					}
+					case 21523: {
+						// TODO: in theory we should write to the winsize struct that gets
+						// passed in, but for now musl doesn't read anything on it
+						if (!stream.tty) return -59;
+						if (stream.tty.ops.ioctl_tiocgwinsz) {
+							var winsize = stream.tty.ops.ioctl_tiocgwinsz(stream.tty);
+							var argp = syscallGetVarargP();
+							HEAP16[argp >> 1] = winsize[0];
+							HEAP16[(argp + 2) >> 1] = winsize[1];
+						}
+						return 0;
+					}
+					case 21524: {
+						// TODO: technically, this ioctl call should change the window size.
+						// but, since emscripten doesn't have any concept of a terminal window
+						// yet, we'll just silently throw it away as we do TIOCGWINSZ
+						if (!stream.tty) return -59;
+						return 0;
+					}
+					case 21515: {
+						if (!stream.tty) return -59;
+						return 0;
+					}
+					default:
+						return -28; // not supported
+				}
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_listen(fd, backlog) {
+			try {
+				var sock = getSocketFromFD(fd);
+				sock.sock_ops.listen(sock, backlog);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_lstat64(path, buf) {
+			try {
+				path = SYSCALLS.getStr(path);
+				return SYSCALLS.doStat(FS.lstat, path, buf);
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_mkdirat(dirfd, path, mode) {
+			try {
+				path = SYSCALLS.getStr(path);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				FS.mkdir(path, mode, 0);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_newfstatat(dirfd, path, buf, flags) {
+			try {
+				path = SYSCALLS.getStr(path);
+				var nofollow = flags & 256;
+				var allowEmpty = flags & 4096;
+				flags = flags & ~6400;
+				assert(!flags, `unknown flags in __syscall_newfstatat: ${flags}`);
+				path = SYSCALLS.calculateAt(dirfd, path, allowEmpty);
+				return SYSCALLS.doStat(nofollow ? FS.lstat : FS.stat, path, buf);
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_openat(dirfd, path, flags, varargs) {
+			SYSCALLS.varargs = varargs;
+			try {
+				path = SYSCALLS.getStr(path);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				var mode = varargs ? syscallGetVarargI() : 0;
+				return FS.open(path, flags, mode).fd;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var PIPEFS = {
+			BUCKET_BUFFER_SIZE: 8192,
+			mount(mount) {
+				// Do not pollute the real root directory or its child nodes with pipes
+				// Looks like it is OK to create another pseudo-root node not linked to the FS.root hierarchy this way
+				return FS.createNode(null, "/", 16384 | 0o777, 0);
+			},
+			createPipe() {
+				var pipe = {
+					buckets: [],
+					// refcnt 2 because pipe has a read end and a write end. We need to be
+					// able to read from the read end after write end is closed.
+					refcnt: 2,
+				};
+
+				pipe.buckets.push({
+					buffer: new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),
+					offset: 0,
+					roffset: 0,
+				});
+
+				var rName = PIPEFS.nextname();
+				var wName = PIPEFS.nextname();
+				var rNode = FS.createNode(PIPEFS.root, rName, 4096, 0);
+				var wNode = FS.createNode(PIPEFS.root, wName, 4096, 0);
+
+				rNode.pipe = pipe;
+				wNode.pipe = pipe;
+
+				var readableStream = FS.createStream({
+					path: rName,
+					node: rNode,
+					flags: 0,
+					seekable: false,
+					stream_ops: PIPEFS.stream_ops,
+				});
+				rNode.stream = readableStream;
+
+				var writableStream = FS.createStream({
+					path: wName,
+					node: wNode,
+					flags: 1,
+					seekable: false,
+					stream_ops: PIPEFS.stream_ops,
+				});
+				wNode.stream = writableStream;
+
+				return {
+					readable_fd: readableStream.fd,
+					writable_fd: writableStream.fd,
+				};
+			},
+			stream_ops: {
+				poll(stream) {
+					var pipe = stream.node.pipe;
+
+					if ((stream.flags & 2097155) === 1) {
+						return 256 | 4;
+					}
+					if (pipe.buckets.length > 0) {
+						for (var i = 0; i < pipe.buckets.length; i++) {
+							var bucket = pipe.buckets[i];
+							if (bucket.offset - bucket.roffset > 0) {
+								return 64 | 1;
+							}
+						}
+					}
+
+					return 0;
+				},
+				ioctl(stream, request, varargs) {
+					return 28;
+				},
+				fsync(stream) {
+					return 28;
+				},
+				read(stream, buffer, offset, length, position /* ignored */) {
+					var pipe = stream.node.pipe;
+					var currentLength = 0;
+
+					for (var i = 0; i < pipe.buckets.length; i++) {
+						var bucket = pipe.buckets[i];
+						currentLength += bucket.offset - bucket.roffset;
+					}
+
+					assert(buffer instanceof ArrayBuffer || ArrayBuffer.isView(buffer));
+					var data = buffer.subarray(offset, offset + length);
+
+					if (length <= 0) {
+						return 0;
+					}
+					if (currentLength == 0) {
+						// Behave as if the read end is always non-blocking
+						throw new FS.ErrnoError(6);
+					}
+					var toRead = Math.min(currentLength, length);
+
+					var totalRead = toRead;
+					var toRemove = 0;
+
+					for (var i = 0; i < pipe.buckets.length; i++) {
+						var currBucket = pipe.buckets[i];
+						var bucketSize = currBucket.offset - currBucket.roffset;
+
+						if (toRead <= bucketSize) {
+							var tmpSlice = currBucket.buffer.subarray(
+								currBucket.roffset,
+								currBucket.offset,
+							);
+							if (toRead < bucketSize) {
+								tmpSlice = tmpSlice.subarray(0, toRead);
+								currBucket.roffset += toRead;
+							} else {
+								toRemove++;
+							}
+							data.set(tmpSlice);
+							break;
+						} else {
+							var tmpSlice = currBucket.buffer.subarray(
+								currBucket.roffset,
+								currBucket.offset,
+							);
+							data.set(tmpSlice);
+							data = data.subarray(tmpSlice.byteLength);
+							toRead -= tmpSlice.byteLength;
+							toRemove++;
+						}
+					}
+
+					if (toRemove && toRemove == pipe.buckets.length) {
+						// Do not generate excessive garbage in use cases such as
+						// write several bytes, read everything, write several bytes, read everything...
+						toRemove--;
+						pipe.buckets[toRemove].offset = 0;
+						pipe.buckets[toRemove].roffset = 0;
+					}
+
+					pipe.buckets.splice(0, toRemove);
+
+					return totalRead;
+				},
+				write(stream, buffer, offset, length, position /* ignored */) {
+					var pipe = stream.node.pipe;
+
+					assert(buffer instanceof ArrayBuffer || ArrayBuffer.isView(buffer));
+					var data = buffer.subarray(offset, offset + length);
+
+					var dataLen = data.byteLength;
+					if (dataLen <= 0) {
+						return 0;
+					}
+
+					var currBucket = null;
+
+					if (pipe.buckets.length == 0) {
+						currBucket = {
+							buffer: new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),
+							offset: 0,
+							roffset: 0,
+						};
+						pipe.buckets.push(currBucket);
+					} else {
+						currBucket = pipe.buckets[pipe.buckets.length - 1];
+					}
+
+					assert(currBucket.offset <= PIPEFS.BUCKET_BUFFER_SIZE);
+
+					var freeBytesInCurrBuffer =
+						PIPEFS.BUCKET_BUFFER_SIZE - currBucket.offset;
+					if (freeBytesInCurrBuffer >= dataLen) {
+						currBucket.buffer.set(data, currBucket.offset);
+						currBucket.offset += dataLen;
+						return dataLen;
+					} else if (freeBytesInCurrBuffer > 0) {
+						currBucket.buffer.set(
+							data.subarray(0, freeBytesInCurrBuffer),
+							currBucket.offset,
+						);
+						currBucket.offset += freeBytesInCurrBuffer;
+						data = data.subarray(freeBytesInCurrBuffer, data.byteLength);
+					}
+
+					var numBuckets = (data.byteLength / PIPEFS.BUCKET_BUFFER_SIZE) | 0;
+					var remElements = data.byteLength % PIPEFS.BUCKET_BUFFER_SIZE;
+
+					for (var i = 0; i < numBuckets; i++) {
+						var newBucket = {
+							buffer: new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),
+							offset: PIPEFS.BUCKET_BUFFER_SIZE,
+							roffset: 0,
+						};
+						pipe.buckets.push(newBucket);
+						newBucket.buffer.set(data.subarray(0, PIPEFS.BUCKET_BUFFER_SIZE));
+						data = data.subarray(PIPEFS.BUCKET_BUFFER_SIZE, data.byteLength);
+					}
+
+					if (remElements > 0) {
+						var newBucket = {
+							buffer: new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),
+							offset: data.byteLength,
+							roffset: 0,
+						};
+						pipe.buckets.push(newBucket);
+						newBucket.buffer.set(data);
+					}
+
+					return dataLen;
+				},
+				close(stream) {
+					var pipe = stream.node.pipe;
+					pipe.refcnt--;
+					if (pipe.refcnt === 0) {
+						pipe.buckets = null;
+					}
+				},
+			},
+			nextname() {
+				if (!PIPEFS.nextname.current) {
+					PIPEFS.nextname.current = 0;
+				}
+				return "pipe[" + PIPEFS.nextname.current++ + "]";
+			},
+		};
+		function ___syscall_pipe(fdPtr) {
+			try {
+				if (fdPtr == 0) {
+					throw new FS.ErrnoError(21);
+				}
+
+				var res = PIPEFS.createPipe();
+
+				HEAP32[fdPtr >> 2] = res.readable_fd;
+				HEAP32[(fdPtr + 4) >> 2] = res.writable_fd;
+
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_poll(fds, nfds, timeout) {
+			try {
+				var nonzero = 0;
+				for (var i = 0; i < nfds; i++) {
+					var pollfd = fds + 8 * i;
+					var fd = HEAP32[pollfd >> 2];
+					var events = HEAP16[(pollfd + 4) >> 1];
+					var mask = 32;
+					var stream = FS.getStream(fd);
+					if (stream) {
+						mask = SYSCALLS.DEFAULT_POLLMASK;
+						if (stream.stream_ops.poll) {
+							mask = stream.stream_ops.poll(stream, -1);
+						}
+					}
+					mask &= events | 8 | 16;
+					if (mask) nonzero++;
+					HEAP16[(pollfd + 6) >> 1] = mask;
+				}
+				return nonzero;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_readlinkat(dirfd, path, buf, bufsize) {
+			try {
+				path = SYSCALLS.getStr(path);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				if (bufsize <= 0) return -28;
+				var ret = FS.readlink(path);
+
+				var len = Math.min(bufsize, lengthBytesUTF8(ret));
+				var endChar = HEAP8[buf + len];
+				stringToUTF8(ret, buf, bufsize + 1);
+				// readlink is one of the rare functions that write out a C string, but does never append a null to the output buffer(!)
+				// stringToUTF8() always appends a null byte, so restore the character under the null byte after the write.
+				HEAP8[buf + len] = endChar;
+				return len;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_recvfrom(fd, buf, len, flags, addr, addrlen) {
+			try {
+				var sock = getSocketFromFD(fd);
+				var msg = sock.sock_ops.recvmsg(sock, len);
+				if (!msg) return 0; // socket is closed
+				if (addr) {
+					var errno = writeSockaddr(
+						addr,
+						sock.family,
+						DNS.lookup_name(msg.addr),
+						msg.port,
+						addrlen,
+					);
+					assert(!errno);
+				}
+				HEAPU8.set(msg.buffer, buf);
+				return msg.buffer.byteLength;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_renameat(olddirfd, oldpath, newdirfd, newpath) {
+			try {
+				oldpath = SYSCALLS.getStr(oldpath);
+				newpath = SYSCALLS.getStr(newpath);
+				oldpath = SYSCALLS.calculateAt(olddirfd, oldpath);
+				newpath = SYSCALLS.calculateAt(newdirfd, newpath);
+				FS.rename(oldpath, newpath);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_rmdir(path) {
+			try {
+				path = SYSCALLS.getStr(path);
+				FS.rmdir(path);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_sendto(fd, message, length, flags, addr, addr_len) {
+			try {
+				var sock = getSocketFromFD(fd);
+				if (!addr) {
+					// send, no address provided
+					return FS.write(sock.stream, HEAP8, message, length);
+				}
+				var dest = getSocketAddress(addr, addr_len);
+				// sendto an address
+				return sock.sock_ops.sendmsg(
+					sock,
+					HEAP8,
+					message,
+					length,
+					dest.addr,
+					dest.port,
+				);
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_socket(domain, type, protocol) {
+			try {
+				var sock = SOCKFS.createSocket(domain, type, protocol);
+				assert(sock.stream.fd < 64); // XXX ? select() assumes socket fd values are in 0..63
+				return sock.stream.fd;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_stat64(path, buf) {
+			try {
+				path = SYSCALLS.getStr(path);
+				return SYSCALLS.doStat(FS.stat, path, buf);
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_statfs64(path, size, buf) {
+			try {
+				assert(size === 64);
+				var stats = FS.statfs(SYSCALLS.getStr(path));
+				HEAP32[(buf + 4) >> 2] = stats.bsize;
+				HEAP32[(buf + 40) >> 2] = stats.bsize;
+				HEAP32[(buf + 8) >> 2] = stats.blocks;
+				HEAP32[(buf + 12) >> 2] = stats.bfree;
+				HEAP32[(buf + 16) >> 2] = stats.bavail;
+				HEAP32[(buf + 20) >> 2] = stats.files;
+				HEAP32[(buf + 24) >> 2] = stats.ffree;
+				HEAP32[(buf + 28) >> 2] = stats.fsid;
+				HEAP32[(buf + 44) >> 2] = stats.flags; // ST_NOSUID
+				HEAP32[(buf + 36) >> 2] = stats.namelen;
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_symlinkat(target, dirfd, linkpath) {
+			try {
+				target = SYSCALLS.getStr(target);
+				linkpath = SYSCALLS.getStr(linkpath);
+				linkpath = SYSCALLS.calculateAt(dirfd, linkpath);
+				FS.symlink(target, linkpath);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_unlinkat(dirfd, path, flags) {
+			try {
+				path = SYSCALLS.getStr(path);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				if (flags === 0) {
+					FS.unlink(path);
+				} else if (flags === 512) {
+					FS.rmdir(path);
+				} else {
+					abort("Invalid flags passed to unlinkat");
+				}
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var readI53FromI64 = (ptr) => {
+			return HEAPU32[ptr >> 2] + HEAP32[(ptr + 4) >> 2] * 4294967296;
+		};
+
+		function ___syscall_utimensat(dirfd, path, times, flags) {
+			try {
+				path = SYSCALLS.getStr(path);
+				assert(flags === 0);
+				path = SYSCALLS.calculateAt(dirfd, path, true);
+				var now = Date.now(),
+					atime,
+					mtime;
+				if (!times) {
+					atime = now;
+					mtime = now;
+				} else {
+					var seconds = readI53FromI64(times);
+					var nanoseconds = HEAP32[(times + 8) >> 2];
+					if (nanoseconds == 1073741823) {
+						atime = now;
+					} else if (nanoseconds == 1073741822) {
+						atime = null;
+					} else {
+						atime = seconds * 1000 + nanoseconds / (1000 * 1000);
+					}
+					times += 16;
+					seconds = readI53FromI64(times);
+					nanoseconds = HEAP32[(times + 8) >> 2];
+					if (nanoseconds == 1073741823) {
+						mtime = now;
+					} else if (nanoseconds == 1073741822) {
+						mtime = null;
+					} else {
+						mtime = seconds * 1000 + nanoseconds / (1000 * 1000);
+					}
+				}
+				// null here means UTIME_OMIT was passed. If both were set to UTIME_OMIT then
+				// we can skip the call completely.
+				if ((mtime ?? atime) !== null) {
+					FS.utime(path, atime, mtime);
+				}
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var __abort_js = () => abort("native code called abort()");
+
+		var __emscripten_lookup_name = (name) => {
+			// uint32_t _emscripten_lookup_name(const char *name);
+			var nameString = UTF8ToString(name);
+			return inetPton4(DNS.lookup_name(nameString));
+		};
+
+		var __emscripten_memcpy_js = (dest, src, num) =>
+			HEAPU8.copyWithin(dest, src, src + num);
+
+		var runtimeKeepaliveCounter = 0;
+		var __emscripten_runtime_keepalive_clear = () => {
+			noExitRuntime = false;
+			runtimeKeepaliveCounter = 0;
+		};
+
+		var __emscripten_throw_longjmp = () => {
+			throw Infinity;
+		};
+
+		function __gmtime_js(time_low, time_high, tmPtr) {
+			var time = convertI32PairToI53Checked(time_low, time_high);
+
+			var date = new Date(time * 1000);
+			HEAP32[tmPtr >> 2] = date.getUTCSeconds();
+			HEAP32[(tmPtr + 4) >> 2] = date.getUTCMinutes();
+			HEAP32[(tmPtr + 8) >> 2] = date.getUTCHours();
+			HEAP32[(tmPtr + 12) >> 2] = date.getUTCDate();
+			HEAP32[(tmPtr + 16) >> 2] = date.getUTCMonth();
+			HEAP32[(tmPtr + 20) >> 2] = date.getUTCFullYear() - 1900;
+			HEAP32[(tmPtr + 24) >> 2] = date.getUTCDay();
+			var start = Date.UTC(date.getUTCFullYear(), 0, 1, 0, 0, 0, 0);
+			var yday = ((date.getTime() - start) / (1000 * 60 * 60 * 24)) | 0;
+			HEAP32[(tmPtr + 28) >> 2] = yday;
+		}
+
+		var isLeapYear = (year) =>
+			year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0);
+
+		var MONTH_DAYS_LEAP_CUMULATIVE = [
+			0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335,
+		];
+
+		var MONTH_DAYS_REGULAR_CUMULATIVE = [
+			0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334,
+		];
+		var ydayFromDate = (date) => {
+			var leap = isLeapYear(date.getFullYear());
+			var monthDaysCumulative = leap
+				? MONTH_DAYS_LEAP_CUMULATIVE
+				: MONTH_DAYS_REGULAR_CUMULATIVE;
+			var yday = monthDaysCumulative[date.getMonth()] + date.getDate() - 1; // -1 since it's days since Jan 1
+
+			return yday;
+		};
+
+		function __localtime_js(time_low, time_high, tmPtr) {
+			var time = convertI32PairToI53Checked(time_low, time_high);
+
+			var date = new Date(time * 1000);
+			HEAP32[tmPtr >> 2] = date.getSeconds();
+			HEAP32[(tmPtr + 4) >> 2] = date.getMinutes();
+			HEAP32[(tmPtr + 8) >> 2] = date.getHours();
+			HEAP32[(tmPtr + 12) >> 2] = date.getDate();
+			HEAP32[(tmPtr + 16) >> 2] = date.getMonth();
+			HEAP32[(tmPtr + 20) >> 2] = date.getFullYear() - 1900;
+			HEAP32[(tmPtr + 24) >> 2] = date.getDay();
+
+			var yday = ydayFromDate(date) | 0;
+			HEAP32[(tmPtr + 28) >> 2] = yday;
+			HEAP32[(tmPtr + 36) >> 2] = -(date.getTimezoneOffset() * 60);
+
+			// Attention: DST is in December in South, and some regions don't have DST at all.
+			var start = new Date(date.getFullYear(), 0, 1);
+			var summerOffset = new Date(date.getFullYear(), 6, 1).getTimezoneOffset();
+			var winterOffset = start.getTimezoneOffset();
+			var dst =
+				(summerOffset != winterOffset &&
+					date.getTimezoneOffset() == Math.min(winterOffset, summerOffset)) | 0;
+			HEAP32[(tmPtr + 32) >> 2] = dst;
+		}
+
+		/** @suppress {duplicate } */
+		var setTempRet0 = (val) => __emscripten_tempret_set(val);
+		var _setTempRet0 = setTempRet0;
+
+		var __mktime_js = function (tmPtr) {
+			var ret = (() => {
+				var date = new Date(
+					HEAP32[(tmPtr + 20) >> 2] + 1900,
+					HEAP32[(tmPtr + 16) >> 2],
+					HEAP32[(tmPtr + 12) >> 2],
+					HEAP32[(tmPtr + 8) >> 2],
+					HEAP32[(tmPtr + 4) >> 2],
+					HEAP32[tmPtr >> 2],
+					0,
+				);
+
+				// There's an ambiguous hour when the time goes back; the tm_isdst field is
+				// used to disambiguate it.  Date() basically guesses, so we fix it up if it
+				// guessed wrong, or fill in tm_isdst with the guess if it's -1.
+				var dst = HEAP32[(tmPtr + 32) >> 2];
+				var guessedOffset = date.getTimezoneOffset();
+				var start = new Date(date.getFullYear(), 0, 1);
+				var summerOffset = new Date(
+					date.getFullYear(),
+					6,
+					1,
+				).getTimezoneOffset();
+				var winterOffset = start.getTimezoneOffset();
+				var dstOffset = Math.min(winterOffset, summerOffset); // DST is in December in South
+				if (dst < 0) {
+					// Attention: some regions don't have DST at all.
+					HEAP32[(tmPtr + 32) >> 2] = Number(
+						summerOffset != winterOffset && dstOffset == guessedOffset,
+					);
+				} else if (dst > 0 != (dstOffset == guessedOffset)) {
+					var nonDstOffset = Math.max(winterOffset, summerOffset);
+					var trueOffset = dst > 0 ? dstOffset : nonDstOffset;
+					// Don't try setMinutes(date.getMinutes() + ...) -- it's messed up.
+					date.setTime(date.getTime() + (trueOffset - guessedOffset) * 60000);
+				}
+
+				HEAP32[(tmPtr + 24) >> 2] = date.getDay();
+				var yday = ydayFromDate(date) | 0;
+				HEAP32[(tmPtr + 28) >> 2] = yday;
+				// To match expected behavior, update fields from date
+				HEAP32[tmPtr >> 2] = date.getSeconds();
+				HEAP32[(tmPtr + 4) >> 2] = date.getMinutes();
+				HEAP32[(tmPtr + 8) >> 2] = date.getHours();
+				HEAP32[(tmPtr + 12) >> 2] = date.getDate();
+				HEAP32[(tmPtr + 16) >> 2] = date.getMonth();
+				HEAP32[(tmPtr + 20) >> 2] = date.getYear();
+
+				var timeMs = date.getTime();
+				if (isNaN(timeMs)) {
+					return -1;
+				}
+				// Return time in microseconds
+				return timeMs / 1000;
+			})();
+			return (
+				setTempRet0(
+					((tempDouble = ret),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				),
+				ret >>> 0
+			);
+		};
+
+		function __mmap_js(
+			len,
+			prot,
+			flags,
+			fd,
+			offset_low,
+			offset_high,
+			allocated,
+			addr,
+		) {
+			var offset = convertI32PairToI53Checked(offset_low, offset_high);
+
+			try {
+				if (isNaN(offset)) return 61;
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				var res = FS.mmap(stream, len, offset, prot, flags);
+				var ptr = res.ptr;
+				HEAP32[allocated >> 2] = res.allocated;
+				HEAPU32[addr >> 2] = ptr;
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function __munmap_js(addr, len, prot, flags, fd, offset_low, offset_high) {
+			var offset = convertI32PairToI53Checked(offset_low, offset_high);
+
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				if (prot & 2) {
+					SYSCALLS.doMsync(addr, stream, len, flags, offset);
+				}
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var timers = {};
+
+		var handleException = (e) => {
+			// Certain exception types we do not treat as errors since they are used for
+			// internal control flow.
+			// 1. ExitStatus, which is thrown by exit()
+			// 2. "unwind", which is thrown by emscripten_unwind_to_js_event_loop() and others
+			//    that wish to return to JS event loop.
+			if (e instanceof ExitStatus || e == "unwind") {
+				return EXITSTATUS;
+			}
+			checkStackCookie();
+			if (e instanceof WebAssembly.RuntimeError) {
+				if (_emscripten_stack_get_current() <= 0) {
+					err(
+						"Stack overflow detected.  You can try increasing -sSTACK_SIZE (currently set to 65536)",
+					);
+				}
+			}
+			quit_(1, e);
+		};
+
+		var keepRuntimeAlive = () => noExitRuntime || runtimeKeepaliveCounter > 0;
+		var _proc_exit = (code) => {
+			EXITSTATUS = code;
+			if (!keepRuntimeAlive()) {
+				Module["onExit"]?.(code);
+				ABORT = true;
+			}
+			quit_(code, new ExitStatus(code));
+		};
+
+		/** @suppress {duplicate } */
+		/** @param {boolean|number=} implicit */
+		var exitJS = (status, implicit) => {
+			EXITSTATUS = status;
+
+			checkUnflushedContent();
+
+			// if exit() was called explicitly, warn the user if the runtime isn't actually being shut down
+			if (keepRuntimeAlive() && !implicit) {
+				var msg = `program exited (with status: ${status}), but keepRuntimeAlive() is set (counter=${runtimeKeepaliveCounter}) due to an async operation, so halting execution but not exiting the runtime or preventing further async execution (you can use emscripten_force_exit, if you want to force a true shutdown)`;
+				readyPromiseReject(msg);
+				err(msg);
+			}
+
+			_proc_exit(status);
+		};
+		var _exit = exitJS;
+
+		var maybeExit = () => {
+			if (!keepRuntimeAlive()) {
+				try {
+					_exit(EXITSTATUS);
+				} catch (e) {
+					handleException(e);
+				}
+			}
+		};
+		var callUserCallback = (func) => {
+			if (ABORT) {
+				err(
+					"user callback triggered after runtime exited or application aborted.  Ignoring.",
+				);
+				return;
+			}
+			try {
+				func();
+				maybeExit();
+			} catch (e) {
+				handleException(e);
+			}
+		};
+
+		var _emscripten_get_now = () => performance.now();
+		var __setitimer_js = (which, timeout_ms) => {
+			// First, clear any existing timer.
+			if (timers[which]) {
+				clearTimeout(timers[which].id);
+				delete timers[which];
+			}
+
+			// A timeout of zero simply cancels the current timeout so we have nothing
+			// more to do.
+			if (!timeout_ms) return 0;
+
+			var id = setTimeout(() => {
+				assert(which in timers);
+				delete timers[which];
+				callUserCallback(() =>
+					__emscripten_timeout(which, _emscripten_get_now()),
+				);
+			}, timeout_ms);
+			timers[which] = { id, timeout_ms };
+			return 0;
+		};
+
+		var __tzset_js = (timezone, daylight, std_name, dst_name) => {
+			// TODO: Use (malleable) environment variables instead of system settings.
+			var currentYear = new Date().getFullYear();
+			var winter = new Date(currentYear, 0, 1);
+			var summer = new Date(currentYear, 6, 1);
+			var winterOffset = winter.getTimezoneOffset();
+			var summerOffset = summer.getTimezoneOffset();
+
+			// Local standard timezone offset. Local standard time is not adjusted for
+			// daylight savings.  This code uses the fact that getTimezoneOffset returns
+			// a greater value during Standard Time versus Daylight Saving Time (DST).
+			// Thus it determines the expected output during Standard Time, and it
+			// compares whether the output of the given date the same (Standard) or less
+			// (DST).
+			var stdTimezoneOffset = Math.max(winterOffset, summerOffset);
+
+			// timezone is specified as seconds west of UTC ("The external variable
+			// `timezone` shall be set to the difference, in seconds, between
+			// Coordinated Universal Time (UTC) and local standard time."), the same
+			// as returned by stdTimezoneOffset.
+			// See http://pubs.opengroup.org/onlinepubs/009695399/functions/tzset.html
+			HEAPU32[timezone >> 2] = stdTimezoneOffset * 60;
+
+			HEAP32[daylight >> 2] = Number(winterOffset != summerOffset);
+
+			var extractZone = (timezoneOffset) => {
+				// Why inverse sign?
+				// Read here https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTimezoneOffset
+				var sign = timezoneOffset >= 0 ? "-" : "+";
+
+				var absOffset = Math.abs(timezoneOffset);
+				var hours = String(Math.floor(absOffset / 60)).padStart(2, "0");
+				var minutes = String(absOffset % 60).padStart(2, "0");
+
+				return `UTC${sign}${hours}${minutes}`;
+			};
+
+			var winterName = extractZone(winterOffset);
+			var summerName = extractZone(summerOffset);
+			assert(winterName);
+			assert(summerName);
+			assert(
+				lengthBytesUTF8(winterName) <= 16,
+				`timezone name truncated to fit in TZNAME_MAX (${winterName})`,
+			);
+			assert(
+				lengthBytesUTF8(summerName) <= 16,
+				`timezone name truncated to fit in TZNAME_MAX (${summerName})`,
+			);
+			if (summerOffset < winterOffset) {
+				// Northern hemisphere
+				stringToUTF8(winterName, std_name, 17);
+				stringToUTF8(summerName, dst_name, 17);
+			} else {
+				stringToUTF8(winterName, dst_name, 17);
+				stringToUTF8(summerName, std_name, 17);
+			}
+		};
+
+		var _emscripten_date_now = () => Date.now();
+
+		var nowIsMonotonic = 1;
+
+		var checkWasiClock = (clock_id) => clock_id >= 0 && clock_id <= 3;
+
+		function _clock_time_get(
+			clk_id,
+			ignored_precision_low,
+			ignored_precision_high,
+			ptime,
+		) {
+			var ignored_precision = convertI32PairToI53Checked(
+				ignored_precision_low,
+				ignored_precision_high,
+			);
+
+			if (!checkWasiClock(clk_id)) {
+				return 28;
+			}
+			var now;
+			// all wasi clocks but realtime are monotonic
+			if (clk_id === 0) {
+				now = _emscripten_date_now();
+			} else if (nowIsMonotonic) {
+				now = _emscripten_get_now();
+			} else {
+				return 52;
+			}
+			// "now" is in ms, and wasi times are in ns.
+			var nsec = Math.round(now * 1000 * 1000);
+			(tempI64 = [
+				nsec >>> 0,
+				((tempDouble = nsec),
+				+Math.abs(tempDouble) >= 1.0
+					? tempDouble > 0.0
+						? +Math.floor(tempDouble / 4294967296.0) >>> 0
+						: ~~+Math.ceil(
+								(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+							) >>> 0
+					: 0),
+			]),
+				(HEAP32[ptime >> 2] = tempI64[0]),
+				(HEAP32[(ptime + 4) >> 2] = tempI64[1]);
+			return 0;
+		}
+
+		var _emscripten_err = (str) => err(UTF8ToString(str));
+
+		var getHeapMax = () => HEAPU8.length;
+		var _emscripten_get_heap_max = () => getHeapMax();
+
+		var abortOnCannotGrowMemory = (requestedSize) => {
+			abort(
+				`Cannot enlarge memory arrays to size ${requestedSize} bytes (OOM). Either (1) compile with -sINITIAL_MEMORY=X with X higher than the current value ${HEAP8.length}, (2) compile with -sALLOW_MEMORY_GROWTH which allows increasing the size at runtime, or (3) if you want malloc to return NULL (0) instead of this abort, compile with -sABORTING_MALLOC=0`,
+			);
+		};
+		var _emscripten_resize_heap = (requestedSize) => {
+			var oldSize = HEAPU8.length;
+			// With CAN_ADDRESS_2GB or MEMORY64, pointers are already unsigned.
+			requestedSize >>>= 0;
+			abortOnCannotGrowMemory(requestedSize);
+		};
+
+		var ENV = {};
+
+		var getExecutableName = () => thisProgram || "./this.program";
+		var getEnvStrings = () => {
+			if (!getEnvStrings.strings) {
+				// Default values.
+				// Browser language detection #8751
+				var lang =
+					(
+						(typeof navigator == "object" &&
+							navigator.languages &&
+							navigator.languages[0]) ||
+						"C"
+					).replace("-", "_") + ".UTF-8";
+				var env = {
+					USER: "web_user",
+					LOGNAME: "web_user",
+					PATH: "/",
+					PWD: "/",
+					HOME: "/home/web_user",
+					LANG: lang,
+					_: getExecutableName(),
+				};
+				// Apply the user-provided values, if any.
+				for (var x in ENV) {
+					// x is a key in ENV; if ENV[x] is undefined, that means it was
+					// explicitly set to be so. We allow user code to do that to
+					// force variables with default values to remain unset.
+					if (ENV[x] === undefined) delete env[x];
+					else env[x] = ENV[x];
+				}
+				var strings = [];
+				for (var x in env) {
+					strings.push(`${x}=${env[x]}`);
+				}
+				getEnvStrings.strings = strings;
+			}
+			return getEnvStrings.strings;
+		};
+
+		var stringToAscii = (str, buffer) => {
+			for (var i = 0; i < str.length; ++i) {
+				assert(str.charCodeAt(i) === (str.charCodeAt(i) & 0xff));
+				HEAP8[buffer++] = str.charCodeAt(i);
+			}
+			// Null-terminate the string
+			HEAP8[buffer] = 0;
+		};
+		var _environ_get = (__environ, environ_buf) => {
+			var bufSize = 0;
+			getEnvStrings().forEach((string, i) => {
+				var ptr = environ_buf + bufSize;
+				HEAPU32[(__environ + i * 4) >> 2] = ptr;
+				stringToAscii(string, ptr);
+				bufSize += string.length + 1;
+			});
+			return 0;
+		};
+
+		var _environ_sizes_get = (penviron_count, penviron_buf_size) => {
+			var strings = getEnvStrings();
+			HEAPU32[penviron_count >> 2] = strings.length;
+			var bufSize = 0;
+			strings.forEach((string) => (bufSize += string.length + 1));
+			HEAPU32[penviron_buf_size >> 2] = bufSize;
+			return 0;
+		};
+
+		function _fd_close(fd) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				FS.close(stream);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		function _fd_fdstat_get(fd, pbuf) {
+			try {
+				var rightsBase = 0;
+				var rightsInheriting = 0;
+				var flags = 0;
+				{
+					var stream = SYSCALLS.getStreamFromFD(fd);
+					// All character devices are terminals (other things a Linux system would
+					// assume is a character device, like the mouse, we have special APIs for).
+					var type = stream.tty
+						? 2
+						: FS.isDir(stream.mode)
+							? 3
+							: FS.isLink(stream.mode)
+								? 7
+								: 4;
+				}
+				HEAP8[pbuf] = type;
+				HEAP16[(pbuf + 2) >> 1] = flags;
+				(tempI64 = [
+					rightsBase >>> 0,
+					((tempDouble = rightsBase),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(pbuf + 8) >> 2] = tempI64[0]),
+					(HEAP32[(pbuf + 12) >> 2] = tempI64[1]);
+				(tempI64 = [
+					rightsInheriting >>> 0,
+					((tempDouble = rightsInheriting),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(pbuf + 16) >> 2] = tempI64[0]),
+					(HEAP32[(pbuf + 20) >> 2] = tempI64[1]);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		/** @param {number=} offset */
+		var doReadv = (stream, iov, iovcnt, offset) => {
+			var ret = 0;
+			for (var i = 0; i < iovcnt; i++) {
+				var ptr = HEAPU32[iov >> 2];
+				var len = HEAPU32[(iov + 4) >> 2];
+				iov += 8;
+				var curr = FS.read(stream, HEAP8, ptr, len, offset);
+				if (curr < 0) return -1;
+				ret += curr;
+				if (curr < len) break; // nothing more to read
+				if (typeof offset != "undefined") {
+					offset += curr;
+				}
+			}
+			return ret;
+		};
+
+		function _fd_read(fd, iov, iovcnt, pnum) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				var num = doReadv(stream, iov, iovcnt);
+				HEAPU32[pnum >> 2] = num;
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		function _fd_seek(fd, offset_low, offset_high, whence, newOffset) {
+			var offset = convertI32PairToI53Checked(offset_low, offset_high);
+
+			try {
+				if (isNaN(offset)) return 61;
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				FS.llseek(stream, offset, whence);
+				(tempI64 = [
+					stream.position >>> 0,
+					((tempDouble = stream.position),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[newOffset >> 2] = tempI64[0]),
+					(HEAP32[(newOffset + 4) >> 2] = tempI64[1]);
+				if (stream.getdents && offset === 0 && whence === 0)
+					stream.getdents = null; // reset readdir state
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		function _fd_sync(fd) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				if (stream.stream_ops?.fsync) {
+					return stream.stream_ops.fsync(stream);
+				}
+				return 0; // we can't do anything synchronously; the in-memory FS is already synced to
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		/** @param {number=} offset */
+		var doWritev = (stream, iov, iovcnt, offset) => {
+			var ret = 0;
+			for (var i = 0; i < iovcnt; i++) {
+				var ptr = HEAPU32[iov >> 2];
+				var len = HEAPU32[(iov + 4) >> 2];
+				iov += 8;
+				var curr = FS.write(stream, HEAP8, ptr, len, offset);
+				if (curr < 0) return -1;
+				ret += curr;
+				if (curr < len) {
+					// No more space to write.
+					break;
+				}
+				if (typeof offset != "undefined") {
+					offset += curr;
+				}
+			}
+			return ret;
+		};
+
+		function _fd_write(fd, iov, iovcnt, pnum) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				var num = doWritev(stream, iov, iovcnt);
+				HEAPU32[pnum >> 2] = num;
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		var _getaddrinfo = (node, service, hint, out) => {
+			// Note getaddrinfo currently only returns a single addrinfo with ai_next defaulting to NULL. When NULL
+			// hints are specified or ai_family set to AF_UNSPEC or ai_socktype or ai_protocol set to 0 then we
+			// really should provide a linked list of suitable addrinfo values.
+			var addrs = [];
+			var canon = null;
+			var addr = 0;
+			var port = 0;
+			var flags = 0;
+			var family = 0;
+			var type = 0;
+			var proto = 0;
+			var ai, last;
+
+			function allocaddrinfo(family, type, proto, canon, addr, port) {
+				var sa, salen, ai;
+				var errno;
+
+				salen = family === 10 ? 28 : 16;
+				addr = family === 10 ? inetNtop6(addr) : inetNtop4(addr);
+				sa = _malloc(salen);
+				errno = writeSockaddr(sa, family, addr, port);
+				assert(!errno);
+
+				ai = _malloc(32);
+				HEAP32[(ai + 4) >> 2] = family;
+				HEAP32[(ai + 8) >> 2] = type;
+				HEAP32[(ai + 12) >> 2] = proto;
+				HEAPU32[(ai + 24) >> 2] = canon;
+				HEAPU32[(ai + 20) >> 2] = sa;
+				if (family === 10) {
+					HEAP32[(ai + 16) >> 2] = 28;
+				} else {
+					HEAP32[(ai + 16) >> 2] = 16;
+				}
+				HEAP32[(ai + 28) >> 2] = 0;
+
+				return ai;
+			}
+
+			if (hint) {
+				flags = HEAP32[hint >> 2];
+				family = HEAP32[(hint + 4) >> 2];
+				type = HEAP32[(hint + 8) >> 2];
+				proto = HEAP32[(hint + 12) >> 2];
+			}
+			if (type && !proto) {
+				proto = type === 2 ? 17 : 6;
+			}
+			if (!type && proto) {
+				type = proto === 17 ? 2 : 1;
+			}
+
+			// If type or proto are set to zero in hints we should really be returning multiple addrinfo values, but for
+			// now default to a TCP STREAM socket so we can at least return a sensible addrinfo given NULL hints.
+			if (proto === 0) {
+				proto = 6;
+			}
+			if (type === 0) {
+				type = 1;
+			}
+
+			if (!node && !service) {
+				return -2;
+			}
+			if (flags & ~(1 | 2 | 4 | 1024 | 8 | 16 | 32)) {
+				return -1;
+			}
+			if (hint !== 0 && HEAP32[hint >> 2] & 2 && !node) {
+				return -1;
+			}
+			if (flags & 32) {
+				// TODO
+				return -2;
+			}
+			if (type !== 0 && type !== 1 && type !== 2) {
+				return -7;
+			}
+			if (family !== 0 && family !== 2 && family !== 10) {
+				return -6;
+			}
+
+			if (service) {
+				service = UTF8ToString(service);
+				port = parseInt(service, 10);
+
+				if (isNaN(port)) {
+					if (flags & 1024) {
+						return -2;
+					}
+					// TODO support resolving well-known service names from:
+					// http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt
+					return -8;
+				}
+			}
+
+			if (!node) {
+				if (family === 0) {
+					family = 2;
+				}
+				if ((flags & 1) === 0) {
+					if (family === 2) {
+						addr = _htonl(2130706433);
+					} else {
+						addr = [0, 0, 0, _htonl(1)];
+					}
+				}
+				ai = allocaddrinfo(family, type, proto, null, addr, port);
+				HEAPU32[out >> 2] = ai;
+				return 0;
+			}
+
+			//
+			// try as a numeric address
+			//
+			node = UTF8ToString(node);
+			addr = inetPton4(node);
+			if (addr !== null) {
+				// incoming node is a valid ipv4 address
+				if (family === 0 || family === 2) {
+					family = 2;
+				} else if (family === 10 && flags & 8) {
+					addr = [0, 0, _htonl(0xffff), addr];
+					family = 10;
+				} else {
+					return -2;
+				}
+			} else {
+				addr = inetPton6(node);
+				if (addr !== null) {
+					// incoming node is a valid ipv6 address
+					if (family === 0 || family === 10) {
+						family = 10;
+					} else {
+						return -2;
+					}
+				}
+			}
+			if (addr != null) {
+				ai = allocaddrinfo(family, type, proto, node, addr, port);
+				HEAPU32[out >> 2] = ai;
+				return 0;
+			}
+			if (flags & 4) {
+				return -2;
+			}
+
+			//
+			// try as a hostname
+			//
+			// resolve the hostname to a temporary fake address
+			node = DNS.lookup_name(node);
+			addr = inetPton4(node);
+			if (family === 0) {
+				family = 2;
+			} else if (family === 10) {
+				addr = [0, 0, _htonl(0xffff), addr];
+			}
+			ai = allocaddrinfo(family, type, proto, null, addr, port);
+			HEAPU32[out >> 2] = ai;
+			return 0;
+		};
+
+		/** @type {function(...*):?} */
+		function _getcontext() {
+			abort("missing function: getcontext");
+		}
+		_getcontext.stub = true;
+
+		/** @type {function(...*):?} */
+		function _getdtablesize() {
+			abort("missing function: getdtablesize");
+		}
+		_getdtablesize.stub = true;
+
+		var _getnameinfo = (sa, salen, node, nodelen, serv, servlen, flags) => {
+			var info = readSockaddr(sa, salen);
+			if (info.errno) {
+				return -6;
+			}
+			var port = info.port;
+			var addr = info.addr;
+
+			var overflowed = false;
+
+			if (node && nodelen) {
+				var lookup;
+				if (flags & 1 || !(lookup = DNS.lookup_addr(addr))) {
+					if (flags & 8) {
+						return -2;
+					}
+				} else {
+					addr = lookup;
+				}
+				var numBytesWrittenExclNull = stringToUTF8(addr, node, nodelen);
+
+				if (numBytesWrittenExclNull + 1 >= nodelen) {
+					overflowed = true;
+				}
+			}
+
+			if (serv && servlen) {
+				port = "" + port;
+				var numBytesWrittenExclNull = stringToUTF8(port, serv, servlen);
+
+				if (numBytesWrittenExclNull + 1 >= servlen) {
+					overflowed = true;
+				}
+			}
+
+			if (overflowed) {
+				// Note: even when we overflow, getnameinfo() is specced to write out the truncated results.
+				return -12;
+			}
+
+			return 0;
+		};
+
+		var Protocols = {
+			list: [],
+			map: {},
+		};
+
+		var _setprotoent = (stayopen) => {
+			// void setprotoent(int stayopen);
+
+			// Allocate and populate a protoent structure given a name, protocol number and array of aliases
+			function allocprotoent(name, proto, aliases) {
+				// write name into buffer
+				var nameBuf = _malloc(name.length + 1);
+				stringToAscii(name, nameBuf);
+
+				// write aliases into buffer
+				var j = 0;
+				var length = aliases.length;
+				var aliasListBuf = _malloc((length + 1) * 4); // Use length + 1 so we have space for the terminating NULL ptr.
+
+				for (var i = 0; i < length; i++, j += 4) {
+					var alias = aliases[i];
+					var aliasBuf = _malloc(alias.length + 1);
+					stringToAscii(alias, aliasBuf);
+					HEAPU32[(aliasListBuf + j) >> 2] = aliasBuf;
+				}
+				HEAPU32[(aliasListBuf + j) >> 2] = 0; // Terminating NULL pointer.
+
+				// generate protoent
+				var pe = _malloc(12);
+				HEAPU32[pe >> 2] = nameBuf;
+				HEAPU32[(pe + 4) >> 2] = aliasListBuf;
+				HEAP32[(pe + 8) >> 2] = proto;
+				return pe;
+			}
+
+			// Populate the protocol 'database'. The entries are limited to tcp and udp, though it is fairly trivial
+			// to add extra entries from /etc/protocols if desired - though not sure if that'd actually be useful.
+			var list = Protocols.list;
+			var map = Protocols.map;
+			if (list.length === 0) {
+				var entry = allocprotoent("tcp", 6, ["TCP"]);
+				list.push(entry);
+				map["tcp"] = map["6"] = entry;
+				entry = allocprotoent("udp", 17, ["UDP"]);
+				list.push(entry);
+				map["udp"] = map["17"] = entry;
+			}
+
+			_setprotoent.index = 0;
+		};
+
+		var _getprotobyname = (name) => {
+			// struct protoent *getprotobyname(const char *);
+			name = UTF8ToString(name);
+			_setprotoent(true);
+			var result = Protocols.map[name];
+			return result;
+		};
+
+		var _getprotobynumber = (number) => {
+			// struct protoent *getprotobynumber(int proto);
+			_setprotoent(true);
+			var result = Protocols.map[number];
+			return result;
+		};
+
+		/** @type {function(...*):?} */
+		function _makecontext() {
+			abort("missing function: makecontext");
+		}
+		_makecontext.stub = true;
+
+		/** @type {function(...*):?} */
+		function _posix_spawnp() {
+			abort("missing function: posix_spawnp");
+		}
+		_posix_spawnp.stub = true;
+
+		var arraySum = (array, index) => {
+			var sum = 0;
+			for (var i = 0; i <= index; sum += array[i++]) {
+				// no-op
+			}
+			return sum;
+		};
+
+		var MONTH_DAYS_LEAP = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+
+		var MONTH_DAYS_REGULAR = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+		var addDays = (date, days) => {
+			var newDate = new Date(date.getTime());
+			while (days > 0) {
+				var leap = isLeapYear(newDate.getFullYear());
+				var currentMonth = newDate.getMonth();
+				var daysInCurrentMonth = (leap ? MONTH_DAYS_LEAP : MONTH_DAYS_REGULAR)[
+					currentMonth
+				];
+
+				if (days > daysInCurrentMonth - newDate.getDate()) {
+					// we spill over to next month
+					days -= daysInCurrentMonth - newDate.getDate() + 1;
+					newDate.setDate(1);
+					if (currentMonth < 11) {
+						newDate.setMonth(currentMonth + 1);
+					} else {
+						newDate.setMonth(0);
+						newDate.setFullYear(newDate.getFullYear() + 1);
+					}
+				} else {
+					// we stay in current month
+					newDate.setDate(newDate.getDate() + days);
+					return newDate;
+				}
+			}
+
+			return newDate;
+		};
+
+		var _strptime = (buf, format, tm) => {
+			// char *strptime(const char *restrict buf, const char *restrict format, struct tm *restrict tm);
+			// http://pubs.opengroup.org/onlinepubs/009695399/functions/strptime.html
+			var pattern = UTF8ToString(format);
+
+			// escape special characters
+			// TODO: not sure we really need to escape all of these in JS regexps
+			var SPECIAL_CHARS = "\\!@#$^&*()+=-[]/{}|:<>?,.";
+			for (var i = 0, ii = SPECIAL_CHARS.length; i < ii; ++i) {
+				pattern = pattern.replace(
+					new RegExp("\\" + SPECIAL_CHARS[i], "g"),
+					"\\" + SPECIAL_CHARS[i],
+				);
+			}
+
+			// reduce number of matchers
+			var EQUIVALENT_MATCHERS = {
+				A: "%a",
+				B: "%b",
+				c: "%a %b %d %H:%M:%S %Y",
+				D: "%m\\/%d\\/%y",
+				e: "%d",
+				F: "%Y-%m-%d",
+				h: "%b",
+				R: "%H\\:%M",
+				r: "%I\\:%M\\:%S\\s%p",
+				T: "%H\\:%M\\:%S",
+				x: "%m\\/%d\\/(?:%y|%Y)",
+				X: "%H\\:%M\\:%S",
+			};
+			// TODO: take care of locale
+
+			var DATE_PATTERNS = {
+				/* weekday name */ a: "(?:Sun(?:day)?)|(?:Mon(?:day)?)|(?:Tue(?:sday)?)|(?:Wed(?:nesday)?)|(?:Thu(?:rsday)?)|(?:Fri(?:day)?)|(?:Sat(?:urday)?)",
+				/* month name */ b: "(?:Jan(?:uary)?)|(?:Feb(?:ruary)?)|(?:Mar(?:ch)?)|(?:Apr(?:il)?)|May|(?:Jun(?:e)?)|(?:Jul(?:y)?)|(?:Aug(?:ust)?)|(?:Sep(?:tember)?)|(?:Oct(?:ober)?)|(?:Nov(?:ember)?)|(?:Dec(?:ember)?)",
+				/* century */ C: "\\d\\d",
+				/* day of month */ d: "0[1-9]|[1-9](?!\\d)|1\\d|2\\d|30|31",
+				/* hour (24hr) */ H: "\\d(?!\\d)|[0,1]\\d|20|21|22|23",
+				/* hour (12hr) */ I: "\\d(?!\\d)|0\\d|10|11|12",
+				/* day of year */ j: "00[1-9]|0?[1-9](?!\\d)|0?[1-9]\\d(?!\\d)|[1,2]\\d\\d|3[0-6]\\d",
+				/* month */ m: "0[1-9]|[1-9](?!\\d)|10|11|12",
+				/* minutes */ M: "0\\d|\\d(?!\\d)|[1-5]\\d",
+				/* whitespace */ n: " ",
+				/* AM/PM */ p: "AM|am|PM|pm|A\\.M\\.|a\\.m\\.|P\\.M\\.|p\\.m\\.",
+				/* seconds */ S: "0\\d|\\d(?!\\d)|[1-5]\\d|60",
+				/* week number */ U: "0\\d|\\d(?!\\d)|[1-4]\\d|50|51|52|53",
+				/* week number */ W: "0\\d|\\d(?!\\d)|[1-4]\\d|50|51|52|53",
+				/* weekday number */ w: "[0-6]",
+				/* 2-digit year */ y: "\\d\\d",
+				/* 4-digit year */ Y: "\\d\\d\\d\\d",
+				/* whitespace */ t: " ",
+				/* time zone */ z: "Z|(?:[\\+\\-]\\d\\d:?(?:\\d\\d)?)",
+			};
+
+			var MONTH_NUMBERS = {
+				JAN: 0,
+				FEB: 1,
+				MAR: 2,
+				APR: 3,
+				MAY: 4,
+				JUN: 5,
+				JUL: 6,
+				AUG: 7,
+				SEP: 8,
+				OCT: 9,
+				NOV: 10,
+				DEC: 11,
+			};
+			var DAY_NUMBERS_SUN_FIRST = {
+				SUN: 0,
+				MON: 1,
+				TUE: 2,
+				WED: 3,
+				THU: 4,
+				FRI: 5,
+				SAT: 6,
+			};
+			var DAY_NUMBERS_MON_FIRST = {
+				MON: 0,
+				TUE: 1,
+				WED: 2,
+				THU: 3,
+				FRI: 4,
+				SAT: 5,
+				SUN: 6,
+			};
+
+			var capture = [];
+			var pattern_out = pattern
+				.replace(/%(.)/g, (m, c) => EQUIVALENT_MATCHERS[c] || m)
+				.replace(/%(.)/g, (_, c) => {
+					let pat = DATE_PATTERNS[c];
+					if (pat) {
+						capture.push(c);
+						return `(${pat})`;
+					} else {
+						return c;
+					}
+				})
+				.replace(
+					// any number of space or tab characters match zero or more spaces
+					/\s+/g,
+					"\\s*",
+				);
+
+			var matches = new RegExp("^" + pattern_out, "i").exec(UTF8ToString(buf));
+
+			function initDate() {
+				function fixup(value, min, max) {
+					return typeof value != "number" || isNaN(value)
+						? min
+						: value >= min
+							? value <= max
+								? value
+								: max
+							: min;
+				}
+				return {
+					year: fixup(HEAP32[(tm + 20) >> 2] + 1900, 1970, 9999),
+					month: fixup(HEAP32[(tm + 16) >> 2], 0, 11),
+					day: fixup(HEAP32[(tm + 12) >> 2], 1, 31),
+					hour: fixup(HEAP32[(tm + 8) >> 2], 0, 23),
+					min: fixup(HEAP32[(tm + 4) >> 2], 0, 59),
+					sec: fixup(HEAP32[tm >> 2], 0, 59),
+					gmtoff: 0,
+				};
+			}
+
+			if (matches) {
+				var date = initDate();
+				var value;
+
+				var getMatch = (symbol) => {
+					var pos = capture.indexOf(symbol);
+					// check if symbol appears in regexp
+					if (pos >= 0) {
+						// return matched value or null (falsy!) for non-matches
+						return matches[pos + 1];
+					}
+					return;
+				};
+
+				// seconds
+				if ((value = getMatch("S"))) {
+					date.sec = jstoi_q(value);
+				}
+
+				// minutes
+				if ((value = getMatch("M"))) {
+					date.min = jstoi_q(value);
+				}
+
+				// hours
+				if ((value = getMatch("H"))) {
+					// 24h clock
+					date.hour = jstoi_q(value);
+				} else if ((value = getMatch("I"))) {
+					// AM/PM clock
+					var hour = jstoi_q(value);
+					if ((value = getMatch("p"))) {
+						hour += value.toUpperCase()[0] === "P" ? 12 : 0;
+					}
+					date.hour = hour;
+				}
+
+				// year
+				if ((value = getMatch("Y"))) {
+					// parse from four-digit year
+					date.year = jstoi_q(value);
+				} else if ((value = getMatch("y"))) {
+					// parse from two-digit year...
+					var year = jstoi_q(value);
+					if ((value = getMatch("C"))) {
+						// ...and century
+						year += jstoi_q(value) * 100;
+					} else {
+						// ...and rule-of-thumb
+						year += year < 69 ? 2000 : 1900;
+					}
+					date.year = year;
+				}
+
+				// month
+				if ((value = getMatch("m"))) {
+					// parse from month number
+					date.month = jstoi_q(value) - 1;
+				} else if ((value = getMatch("b"))) {
+					// parse from month name
+					date.month = MONTH_NUMBERS[value.substring(0, 3).toUpperCase()] || 0;
+					// TODO: derive month from day in year+year, week number+day of week+year
+				}
+
+				// day
+				if ((value = getMatch("d"))) {
+					// get day of month directly
+					date.day = jstoi_q(value);
+				} else if ((value = getMatch("j"))) {
+					// get day of month from day of year ...
+					var day = jstoi_q(value);
+					var leapYear = isLeapYear(date.year);
+					for (var month = 0; month < 12; ++month) {
+						var daysUntilMonth = arraySum(
+							leapYear ? MONTH_DAYS_LEAP : MONTH_DAYS_REGULAR,
+							month - 1,
+						);
+						if (
+							day <=
+							daysUntilMonth +
+								(leapYear ? MONTH_DAYS_LEAP : MONTH_DAYS_REGULAR)[month]
+						) {
+							date.day = day - daysUntilMonth;
+						}
+					}
+				} else if ((value = getMatch("a"))) {
+					// get day of month from weekday ...
+					var weekDay = value.substring(0, 3).toUpperCase();
+					if ((value = getMatch("U"))) {
+						// ... and week number (Sunday being first day of week)
+						// Week number of the year (Sunday as the first day of the week) as a decimal number [00,53].
+						// All days in a new year preceding the first Sunday are considered to be in week 0.
+						var weekDayNumber = DAY_NUMBERS_SUN_FIRST[weekDay];
+						var weekNumber = jstoi_q(value);
+
+						// January 1st
+						var janFirst = new Date(date.year, 0, 1);
+						var endDate;
+						if (janFirst.getDay() === 0) {
+							// Jan 1st is a Sunday, and, hence in the 1st CW
+							endDate = addDays(janFirst, weekDayNumber + 7 * (weekNumber - 1));
+						} else {
+							// Jan 1st is not a Sunday, and, hence still in the 0th CW
+							endDate = addDays(
+								janFirst,
+								7 - janFirst.getDay() + weekDayNumber + 7 * (weekNumber - 1),
+							);
+						}
+						date.day = endDate.getDate();
+						date.month = endDate.getMonth();
+					} else if ((value = getMatch("W"))) {
+						// ... and week number (Monday being first day of week)
+						// Week number of the year (Monday as the first day of the week) as a decimal number [00,53].
+						// All days in a new year preceding the first Monday are considered to be in week 0.
+						var weekDayNumber = DAY_NUMBERS_MON_FIRST[weekDay];
+						var weekNumber = jstoi_q(value);
+
+						// January 1st
+						var janFirst = new Date(date.year, 0, 1);
+						var endDate;
+						if (janFirst.getDay() === 1) {
+							// Jan 1st is a Monday, and, hence in the 1st CW
+							endDate = addDays(janFirst, weekDayNumber + 7 * (weekNumber - 1));
+						} else {
+							// Jan 1st is not a Monday, and, hence still in the 0th CW
+							endDate = addDays(
+								janFirst,
+								7 -
+									janFirst.getDay() +
+									1 +
+									weekDayNumber +
+									7 * (weekNumber - 1),
+							);
+						}
+
+						date.day = endDate.getDate();
+						date.month = endDate.getMonth();
+					}
+				}
+
+				// time zone
+				if ((value = getMatch("z"))) {
+					// GMT offset as either 'Z' or +-HH:MM or +-HH or +-HHMM
+					if (value.toLowerCase() === "z") {
+						date.gmtoff = 0;
+					} else {
+						var match = value.match(/^((?:\-|\+)\d\d):?(\d\d)?/);
+						date.gmtoff = match[1] * 3600;
+						if (match[2]) {
+							date.gmtoff += date.gmtoff > 0 ? match[2] * 60 : -match[2] * 60;
+						}
+					}
+				}
+
+				/*
+        tm_sec  int seconds after the minute  0-61*
+        tm_min  int minutes after the hour  0-59
+        tm_hour int hours since midnight  0-23
+        tm_mday int day of the month  1-31
+        tm_mon  int months since January  0-11
+        tm_year int years since 1900
+        tm_wday int days since Sunday 0-6
+        tm_yday int days since January 1  0-365
+        tm_isdst  int Daylight Saving Time flag
+        tm_gmtoff long offset from GMT (seconds)
+        */
+
+				var fullDate = new Date(
+					date.year,
+					date.month,
+					date.day,
+					date.hour,
+					date.min,
+					date.sec,
+					0,
+				);
+				HEAP32[tm >> 2] = fullDate.getSeconds();
+				HEAP32[(tm + 4) >> 2] = fullDate.getMinutes();
+				HEAP32[(tm + 8) >> 2] = fullDate.getHours();
+				HEAP32[(tm + 12) >> 2] = fullDate.getDate();
+				HEAP32[(tm + 16) >> 2] = fullDate.getMonth();
+				HEAP32[(tm + 20) >> 2] = fullDate.getFullYear() - 1900;
+				HEAP32[(tm + 24) >> 2] = fullDate.getDay();
+				HEAP32[(tm + 28) >> 2] =
+					arraySum(
+						isLeapYear(fullDate.getFullYear())
+							? MONTH_DAYS_LEAP
+							: MONTH_DAYS_REGULAR,
+						fullDate.getMonth() - 1,
+					) +
+					fullDate.getDate() -
+					1;
+				HEAP32[(tm + 32) >> 2] = 0;
+				HEAP32[(tm + 36) >> 2] = date.gmtoff;
+
+				// we need to convert the matched sequence into an integer array to take care of UTF-8 characters > 0x7F
+				// TODO: not sure that intArrayFromString handles all unicode characters correctly
+				return buf + intArrayFromString(matches[0]).length - 1;
+			}
+
+			return 0;
+		};
+
+		/** @type {function(...*):?} */
+		function _swapcontext() {
+			abort("missing function: swapcontext");
+		}
+		_swapcontext.stub = true;
+
+		var getCFunc = (ident) => {
+			var func = Module["_" + ident]; // closure exported function
+			assert(
+				func,
+				"Cannot call unknown function " + ident + ", make sure it is exported",
+			);
+			return func;
+		};
+
+		var writeArrayToMemory = (array, buffer) => {
+			assert(
+				array.length >= 0,
+				"writeArrayToMemory array must have a length (should be an array or typed array)",
+			);
+			HEAP8.set(array, buffer);
+		};
+
+		var stackAlloc = (sz) => __emscripten_stack_alloc(sz);
+		var stringToUTF8OnStack = (str) => {
+			var size = lengthBytesUTF8(str) + 1;
+			var ret = stackAlloc(size);
+			stringToUTF8(str, ret, size);
+			return ret;
+		};
+
+		/**
+		 * @param {string|null=} returnType
+		 * @param {Array=} argTypes
+		 * @param {Arguments|Array=} args
+		 * @param {Object=} opts
+		 */
+		var ccall = (ident, returnType, argTypes, args, opts) => {
+			// For fast lookup of conversion functions
+			var toC = {
+				string: (str) => {
+					var ret = 0;
+					if (str !== null && str !== undefined && str !== 0) {
+						// null string
+						ret = stringToUTF8OnStack(str);
+					}
+					return ret;
+				},
+				array: (arr) => {
+					var ret = stackAlloc(arr.length);
+					writeArrayToMemory(arr, ret);
+					return ret;
+				},
+			};
+
+			function convertReturnValue(ret) {
+				if (returnType === "string") {
+					return UTF8ToString(ret);
+				}
+				if (returnType === "boolean") return Boolean(ret);
+				return ret;
+			}
+
+			var func = getCFunc(ident);
+			var cArgs = [];
+			var stack = 0;
+			assert(returnType !== "array", 'Return type should not be "array".');
+			if (args) {
+				for (var i = 0; i < args.length; i++) {
+					var converter = toC[argTypes[i]];
+					if (converter) {
+						if (stack === 0) stack = stackSave();
+						cArgs[i] = converter(args[i]);
+					} else {
+						cArgs[i] = args[i];
+					}
+				}
+			}
+			var ret = func(...cArgs);
+			function onDone(ret) {
+				if (stack !== 0) stackRestore(stack);
+				return convertReturnValue(ret);
+			}
+
+			ret = onDone(ret);
+			return ret;
+		};
+
+		FS.createPreloadedFile = FS_createPreloadedFile;
+		FS.staticInit();
+		// Set module methods based on EXPORTED_RUNTIME_METHODS
+		function checkIncomingModuleAPI() {
+			ignoredModuleProp("fetchSettings");
+		}
+		var wasmImports = {
+			/** @export */
+			__assert_fail: ___assert_fail,
+			/** @export */
+			__call_sighandler: ___call_sighandler,
+			/** @export */
+			__syscall__newselect: ___syscall__newselect,
+			/** @export */
+			__syscall_accept4: ___syscall_accept4,
+			/** @export */
+			__syscall_bind: ___syscall_bind,
+			/** @export */
+			__syscall_chdir: ___syscall_chdir,
+			/** @export */
+			__syscall_chmod: ___syscall_chmod,
+			/** @export */
+			__syscall_connect: ___syscall_connect,
+			/** @export */
+			__syscall_dup: ___syscall_dup,
+			/** @export */
+			__syscall_faccessat: ___syscall_faccessat,
+			/** @export */
+			__syscall_fchownat: ___syscall_fchownat,
+			/** @export */
+			__syscall_fcntl64: ___syscall_fcntl64,
+			/** @export */
+			__syscall_fdatasync: ___syscall_fdatasync,
+			/** @export */
+			__syscall_fstat64: ___syscall_fstat64,
+			/** @export */
+			__syscall_ftruncate64: ___syscall_ftruncate64,
+			/** @export */
+			__syscall_getcwd: ___syscall_getcwd,
+			/** @export */
+			__syscall_getdents64: ___syscall_getdents64,
+			/** @export */
+			__syscall_getpeername: ___syscall_getpeername,
+			/** @export */
+			__syscall_getsockname: ___syscall_getsockname,
+			/** @export */
+			__syscall_getsockopt: ___syscall_getsockopt,
+			/** @export */
+			__syscall_ioctl: ___syscall_ioctl,
+			/** @export */
+			__syscall_listen: ___syscall_listen,
+			/** @export */
+			__syscall_lstat64: ___syscall_lstat64,
+			/** @export */
+			__syscall_mkdirat: ___syscall_mkdirat,
+			/** @export */
+			__syscall_newfstatat: ___syscall_newfstatat,
+			/** @export */
+			__syscall_openat: ___syscall_openat,
+			/** @export */
+			__syscall_pipe: ___syscall_pipe,
+			/** @export */
+			__syscall_poll: ___syscall_poll,
+			/** @export */
+			__syscall_readlinkat: ___syscall_readlinkat,
+			/** @export */
+			__syscall_recvfrom: ___syscall_recvfrom,
+			/** @export */
+			__syscall_renameat: ___syscall_renameat,
+			/** @export */
+			__syscall_rmdir: ___syscall_rmdir,
+			/** @export */
+			__syscall_sendto: ___syscall_sendto,
+			/** @export */
+			__syscall_socket: ___syscall_socket,
+			/** @export */
+			__syscall_stat64: ___syscall_stat64,
+			/** @export */
+			__syscall_statfs64: ___syscall_statfs64,
+			/** @export */
+			__syscall_symlinkat: ___syscall_symlinkat,
+			/** @export */
+			__syscall_unlinkat: ___syscall_unlinkat,
+			/** @export */
+			__syscall_utimensat: ___syscall_utimensat,
+			/** @export */
+			_abort_js: __abort_js,
+			/** @export */
+			_emscripten_lookup_name: __emscripten_lookup_name,
+			/** @export */
+			_emscripten_memcpy_js: __emscripten_memcpy_js,
+			/** @export */
+			_emscripten_runtime_keepalive_clear: __emscripten_runtime_keepalive_clear,
+			/** @export */
+			_emscripten_throw_longjmp: __emscripten_throw_longjmp,
+			/** @export */
+			_gmtime_js: __gmtime_js,
+			/** @export */
+			_localtime_js: __localtime_js,
+			/** @export */
+			_mktime_js: __mktime_js,
+			/** @export */
+			_mmap_js: __mmap_js,
+			/** @export */
+			_munmap_js: __munmap_js,
+			/** @export */
+			_setitimer_js: __setitimer_js,
+			/** @export */
+			_tzset_js: __tzset_js,
+			/** @export */
+			clock_time_get: _clock_time_get,
+			/** @export */
+			emscripten_date_now: _emscripten_date_now,
+			/** @export */
+			emscripten_err: _emscripten_err,
+			/** @export */
+			emscripten_get_heap_max: _emscripten_get_heap_max,
+			/** @export */
+			emscripten_get_now: _emscripten_get_now,
+			/** @export */
+			emscripten_resize_heap: _emscripten_resize_heap,
+			/** @export */
+			environ_get: _environ_get,
+			/** @export */
+			environ_sizes_get: _environ_sizes_get,
+			/** @export */
+			exit: _exit,
+			/** @export */
+			fd_close: _fd_close,
+			/** @export */
+			fd_fdstat_get: _fd_fdstat_get,
+			/** @export */
+			fd_read: _fd_read,
+			/** @export */
+			fd_seek: _fd_seek,
+			/** @export */
+			fd_sync: _fd_sync,
+			/** @export */
+			fd_write: _fd_write,
+			/** @export */
+			getaddrinfo: _getaddrinfo,
+			/** @export */
+			getcontext: _getcontext,
+			/** @export */
+			getdtablesize: _getdtablesize,
+			/** @export */
+			getnameinfo: _getnameinfo,
+			/** @export */
+			getprotobyname: _getprotobyname,
+			/** @export */
+			getprotobynumber: _getprotobynumber,
+			/** @export */
+			invoke_i,
+			/** @export */
+			invoke_ii,
+			/** @export */
+			invoke_iii,
+			/** @export */
+			invoke_iiii,
+			/** @export */
+			invoke_iiiii,
+			/** @export */
+			invoke_iiiiii,
+			/** @export */
+			invoke_iiiiiii,
+			/** @export */
+			invoke_iiiiiiiiii,
+			/** @export */
+			invoke_v,
+			/** @export */
+			invoke_vi,
+			/** @export */
+			invoke_vii,
+			/** @export */
+			invoke_viidii,
+			/** @export */
+			invoke_viii,
+			/** @export */
+			invoke_viiii,
+			/** @export */
+			invoke_viiiii,
+			/** @export */
+			makecontext: _makecontext,
+			/** @export */
+			posix_spawnp: _posix_spawnp,
+			/** @export */
+			proc_exit: _proc_exit,
+			/** @export */
+			strptime: _strptime,
+			/** @export */
+			swapcontext: _swapcontext,
+		};
+		var wasmExports;
+		createWasm();
+		var ___wasm_call_ctors = createExportWrapper("__wasm_call_ctors", 0);
+		var _php_wasm_run = (Module["_php_wasm_run"] = createExportWrapper(
+			"php_wasm_run",
+			1,
+		));
+		var _fflush = createExportWrapper("fflush", 1);
+		var _malloc = createExportWrapper("malloc", 1);
+		var _strerror = createExportWrapper("strerror", 1);
+		var _htons = createExportWrapper("htons", 1);
+		var _ntohs = createExportWrapper("ntohs", 1);
+		var _htonl = createExportWrapper("htonl", 1);
+		var _emscripten_builtin_memalign = createExportWrapper(
+			"emscripten_builtin_memalign",
+			2,
+		);
+		var __emscripten_timeout = createExportWrapper("_emscripten_timeout", 2);
+		var _setThrew = createExportWrapper("setThrew", 2);
+		var __emscripten_tempret_set = createExportWrapper(
+			"_emscripten_tempret_set",
+			1,
+		);
+		var _emscripten_stack_init = () =>
+			(_emscripten_stack_init = wasmExports["emscripten_stack_init"])();
+		var _emscripten_stack_get_free = () =>
+			(_emscripten_stack_get_free = wasmExports["emscripten_stack_get_free"])();
+		var _emscripten_stack_get_base = () =>
+			(_emscripten_stack_get_base = wasmExports["emscripten_stack_get_base"])();
+		var _emscripten_stack_get_end = () =>
+			(_emscripten_stack_get_end = wasmExports["emscripten_stack_get_end"])();
+		var __emscripten_stack_restore = (a0) =>
+			(__emscripten_stack_restore = wasmExports["_emscripten_stack_restore"])(
+				a0,
+			);
+		var __emscripten_stack_alloc = (a0) =>
+			(__emscripten_stack_alloc = wasmExports["_emscripten_stack_alloc"])(a0);
+		var _emscripten_stack_get_current = () =>
+			(_emscripten_stack_get_current =
+				wasmExports["emscripten_stack_get_current"])();
+		var dynCall_jiji = (Module["dynCall_jiji"] = createExportWrapper(
+			"dynCall_jiji",
+			5,
+		));
+
+		function invoke_iii(index, a1, a2) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_iiiii(index, a1, a2, a3, a4) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2, a3, a4);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_v(index) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)();
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_ii(index, a1) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_viii(index, a1, a2, a3) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1, a2, a3);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_vii(index, a1, a2) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1, a2);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_vi(index, a1) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_i(index) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)();
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_iiiiiii(index, a1, a2, a3, a4, a5, a6) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2, a3, a4, a5, a6);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_iiii(index, a1, a2, a3) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2, a3);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_viiii(index, a1, a2, a3, a4) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1, a2, a3, a4);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_viiiii(index, a1, a2, a3, a4, a5) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1, a2, a3, a4, a5);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_iiiiii(index, a1, a2, a3, a4, a5) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2, a3, a4, a5);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_iiiiiiiiii(index, a1, a2, a3, a4, a5, a6, a7, a8, a9) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2, a3, a4, a5, a6, a7, a8, a9);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_viidii(index, a1, a2, a3, a4, a5) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1, a2, a3, a4, a5);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		// include: postamble.js
+		// === Auto-generated postamble setup entry stuff ===
+
+		Module["ccall"] = ccall;
+		var missingLibrarySymbols = [
+			"writeI53ToI64",
+			"writeI53ToI64Clamped",
+			"writeI53ToI64Signaling",
+			"writeI53ToU64Clamped",
+			"writeI53ToU64Signaling",
+			"readI53FromU64",
+			"convertI32PairToI53",
+			"convertU32PairToI53",
+			"getTempRet0",
+			"growMemory",
+			"emscriptenLog",
+			"readEmAsmArgs",
+			"listenOnce",
+			"autoResumeAudioContext",
+			"dynCallLegacy",
+			"getDynCaller",
+			"dynCall",
+			"runtimeKeepalivePush",
+			"runtimeKeepalivePop",
+			"asmjsMangle",
+			"HandleAllocator",
+			"getNativeTypeSize",
+			"STACK_SIZE",
+			"STACK_ALIGN",
+			"POINTER_SIZE",
+			"ASSERTIONS",
+			"cwrap",
+			"uleb128Encode",
+			"sigToWasmTypes",
+			"generateFuncType",
+			"convertJsFunctionToWasm",
+			"getEmptyTableSlot",
+			"updateTableMap",
+			"getFunctionAddress",
+			"addFunction",
+			"removeFunction",
+			"reallyNegative",
+			"unSign",
+			"strLen",
+			"reSign",
+			"formatString",
+			"intArrayToString",
+			"AsciiToString",
+			"UTF16ToString",
+			"stringToUTF16",
+			"lengthBytesUTF16",
+			"UTF32ToString",
+			"stringToUTF32",
+			"lengthBytesUTF32",
+			"stringToNewUTF8",
+			"registerKeyEventCallback",
+			"maybeCStringToJsString",
+			"findEventTarget",
+			"getBoundingClientRect",
+			"fillMouseEventData",
+			"registerMouseEventCallback",
+			"registerWheelEventCallback",
+			"registerUiEventCallback",
+			"registerFocusEventCallback",
+			"fillDeviceOrientationEventData",
+			"registerDeviceOrientationEventCallback",
+			"fillDeviceMotionEventData",
+			"registerDeviceMotionEventCallback",
+			"screenOrientation",
+			"fillOrientationChangeEventData",
+			"registerOrientationChangeEventCallback",
+			"fillFullscreenChangeEventData",
+			"registerFullscreenChangeEventCallback",
+			"JSEvents_requestFullscreen",
+			"JSEvents_resizeCanvasForFullscreen",
+			"registerRestoreOldStyle",
+			"hideEverythingExceptGivenElement",
+			"restoreHiddenElements",
+			"setLetterbox",
+			"softFullscreenResizeWebGLRenderTarget",
+			"doRequestFullscreen",
+			"fillPointerlockChangeEventData",
+			"registerPointerlockChangeEventCallback",
+			"registerPointerlockErrorEventCallback",
+			"requestPointerLock",
+			"fillVisibilityChangeEventData",
+			"registerVisibilityChangeEventCallback",
+			"registerTouchEventCallback",
+			"fillGamepadEventData",
+			"registerGamepadEventCallback",
+			"registerBeforeUnloadEventCallback",
+			"fillBatteryEventData",
+			"battery",
+			"registerBatteryEventCallback",
+			"setCanvasElementSize",
+			"getCanvasElementSize",
+			"jsStackTrace",
+			"getCallstack",
+			"convertPCtoSourceLocation",
+			"wasiRightsToMuslOFlags",
+			"wasiOFlagsToMuslOFlags",
+			"safeSetTimeout",
+			"setImmediateWrapped",
+			"safeRequestAnimationFrame",
+			"clearImmediateWrapped",
+			"polyfillSetImmediate",
+			"registerPostMainLoop",
+			"registerPreMainLoop",
+			"getPromise",
+			"makePromise",
+			"idsToPromises",
+			"makePromiseCallback",
+			"ExceptionInfo",
+			"findMatchingCatch",
+			"Browser_asyncPrepareDataCounter",
+			"FS_unlink",
+			"FS_mkdirTree",
+			"_setNetworkCallback",
+			"heapObjectForWebGLType",
+			"toTypedArrayIndex",
+			"webgl_enable_ANGLE_instanced_arrays",
+			"webgl_enable_OES_vertex_array_object",
+			"webgl_enable_WEBGL_draw_buffers",
+			"webgl_enable_WEBGL_multi_draw",
+			"webgl_enable_EXT_polygon_offset_clamp",
+			"webgl_enable_EXT_clip_control",
+			"webgl_enable_WEBGL_polygon_mode",
+			"emscriptenWebGLGet",
+			"computeUnpackAlignedImageSize",
+			"colorChannelsInGlTextureFormat",
+			"emscriptenWebGLGetTexPixelData",
+			"emscriptenWebGLGetUniform",
+			"webglGetUniformLocation",
+			"webglPrepareUniformLocationsBeforeFirstUse",
+			"webglGetLeftBracePos",
+			"emscriptenWebGLGetVertexAttrib",
+			"__glGetActiveAttribOrUniform",
+			"writeGLArray",
+			"registerWebGlEventCallback",
+			"runAndAbortIfError",
+			"ALLOC_NORMAL",
+			"ALLOC_STACK",
+			"allocate",
+			"writeStringToMemory",
+			"writeAsciiToMemory",
+			"setErrNo",
+			"demangle",
+			"stackTrace",
+		];
+		missingLibrarySymbols.forEach(missingLibrarySymbol);
+
+		var unexportedSymbols = [
+			"run",
+			"addOnPreRun",
+			"addOnInit",
+			"addOnPreMain",
+			"addOnExit",
+			"addOnPostRun",
+			"addRunDependency",
+			"removeRunDependency",
+			"out",
+			"err",
+			"callMain",
+			"abort",
+			"wasmMemory",
+			"wasmExports",
+			"writeStackCookie",
+			"checkStackCookie",
+			"readI53FromI64",
+			"convertI32PairToI53Checked",
+			"stackSave",
+			"stackRestore",
+			"stackAlloc",
+			"setTempRet0",
+			"ptrToString",
+			"zeroMemory",
+			"exitJS",
+			"getHeapMax",
+			"abortOnCannotGrowMemory",
+			"ENV",
+			"ERRNO_CODES",
+			"strError",
+			"inetPton4",
+			"inetNtop4",
+			"inetPton6",
+			"inetNtop6",
+			"readSockaddr",
+			"writeSockaddr",
+			"DNS",
+			"Protocols",
+			"Sockets",
+			"timers",
+			"warnOnce",
+			"readEmAsmArgsArray",
+			"jstoi_q",
+			"jstoi_s",
+			"getExecutableName",
+			"handleException",
+			"keepRuntimeAlive",
+			"callUserCallback",
+			"maybeExit",
+			"asyncLoad",
+			"alignMemory",
+			"mmapAlloc",
+			"wasmTable",
+			"noExitRuntime",
+			"getCFunc",
+			"freeTableIndexes",
+			"functionsInTableMap",
+			"setValue",
+			"getValue",
+			"PATH",
+			"PATH_FS",
+			"UTF8Decoder",
+			"UTF8ArrayToString",
+			"UTF8ToString",
+			"stringToUTF8Array",
+			"stringToUTF8",
+			"lengthBytesUTF8",
+			"intArrayFromString",
+			"stringToAscii",
+			"UTF16Decoder",
+			"stringToUTF8OnStack",
+			"writeArrayToMemory",
+			"JSEvents",
+			"specialHTMLTargets",
+			"findCanvasEventTarget",
+			"currentFullscreenStrategy",
+			"restoreOldWindowedStyle",
+			"UNWIND_CACHE",
+			"ExitStatus",
+			"getEnvStrings",
+			"checkWasiClock",
+			"doReadv",
+			"doWritev",
+			"initRandomFill",
+			"randomFill",
+			"promiseMap",
+			"uncaughtExceptionCount",
+			"exceptionLast",
+			"exceptionCaught",
+			"Browser",
+			"getPreloadedImageData__data",
+			"wget",
+			"MONTH_DAYS_REGULAR",
+			"MONTH_DAYS_LEAP",
+			"MONTH_DAYS_REGULAR_CUMULATIVE",
+			"MONTH_DAYS_LEAP_CUMULATIVE",
+			"isLeapYear",
+			"ydayFromDate",
+			"arraySum",
+			"addDays",
+			"SYSCALLS",
+			"getSocketFromFD",
+			"getSocketAddress",
+			"preloadPlugins",
+			"FS_createPreloadedFile",
+			"FS_modeStringToFlags",
+			"FS_getMode",
+			"FS_stdin_getChar_buffer",
+			"FS_stdin_getChar",
+			"FS_createPath",
+			"FS_createDevice",
+			"FS_readFile",
+			"FS",
+			"FS_createDataFile",
+			"FS_createLazyFile",
+			"MEMFS",
+			"TTY",
+			"PIPEFS",
+			"SOCKFS",
+			"tempFixedLengthArray",
+			"miniTempWebGLFloatBuffers",
+			"miniTempWebGLIntBuffers",
+			"GL",
+			"AL",
+			"GLUT",
+			"EGL",
+			"GLEW",
+			"IDBStore",
+			"SDL",
+			"SDL_gfx",
+			"allocateUTF8",
+			"allocateUTF8OnStack",
+			"print",
+			"printErr",
+		];
+		unexportedSymbols.forEach(unexportedRuntimeSymbol);
+
+		var calledRun;
+
+		dependenciesFulfilled = function runCaller() {
+			// If run has never been called, and we should call run (INVOKE_RUN is true, and Module.noInitialRun is not false)
+			if (!calledRun) run();
+			if (!calledRun) dependenciesFulfilled = runCaller; // try this again later, after new deps are fulfilled
+		};
+
+		function stackCheckInit() {
+			// This is normally called automatically during __wasm_call_ctors but need to
+			// get these values before even running any of the ctors so we call it redundantly
+			// here.
+			_emscripten_stack_init();
+			// TODO(sbc): Move writeStackCookie to native to to avoid this.
+			writeStackCookie();
+		}
+
+		function run() {
+			if (runDependencies > 0) {
+				return;
+			}
+
+			stackCheckInit();
+
+			preRun();
+
+			// a preRun added a dependency, run will be called later
+			if (runDependencies > 0) {
+				return;
+			}
+
+			function doRun() {
+				// run may have just been called through dependencies being fulfilled just in this very frame,
+				// or while the async setStatus time below was happening
+				if (calledRun) return;
+				calledRun = true;
+				Module["calledRun"] = true;
+
+				if (ABORT) return;
+
+				initRuntime();
+
+				readyPromiseResolve(Module);
+				Module["onRuntimeInitialized"]?.();
+
+				assert(
+					!Module["_main"],
+					'compiled without a main, but one is present. if you added it from JS, use Module["onRuntimeInitialized"]',
+				);
+
+				postRun();
+			}
+
+			if (Module["setStatus"]) {
+				Module["setStatus"]("Running...");
+				setTimeout(() => {
+					setTimeout(() => Module["setStatus"](""), 1);
+					doRun();
+				}, 1);
+			} else {
+				doRun();
+			}
+			checkStackCookie();
+		}
+
+		function checkUnflushedContent() {
+			// Compiler settings do not allow exiting the runtime, so flushing
+			// the streams is not possible. but in ASSERTIONS mode we check
+			// if there was something to flush, and if so tell the user they
+			// should request that the runtime be exitable.
+			// Normally we would not even include flush() at all, but in ASSERTIONS
+			// builds we do so just for this check, and here we see if there is any
+			// content to flush, that is, we check if there would have been
+			// something a non-ASSERTIONS build would have not seen.
+			// How we flush the streams depends on whether we are in SYSCALLS_REQUIRE_FILESYSTEM=0
+			// mode (which has its own special function for this; otherwise, all
+			// the code is inside libc)
+			var oldOut = out;
+			var oldErr = err;
+			var has = false;
+			out = err = (x) => {
+				has = true;
+			};
+			try {
+				// it doesn't matter if it fails
+				_fflush(0);
+				// also flush in the JS FS layer
+				["stdout", "stderr"].forEach((name) => {
+					var info = FS.analyzePath("/dev/" + name);
+					if (!info) return;
+					var stream = info.object;
+					var rdev = stream.rdev;
+					var tty = TTY.ttys[rdev];
+					if (tty?.output?.length) {
+						has = true;
+					}
+				});
+			} catch (e) {}
+			out = oldOut;
+			err = oldErr;
+			if (has) {
+				warnOnce(
+					"stdio streams had content in them that was not flushed. you should set EXIT_RUNTIME to 1 (see the Emscripten FAQ), or make sure to emit a newline when you printf etc.",
+				);
+			}
+		}
+
+		if (Module["preInit"]) {
+			if (typeof Module["preInit"] == "function")
+				Module["preInit"] = [Module["preInit"]];
+			while (Module["preInit"].length > 0) {
+				Module["preInit"].pop()();
+			}
+		}
+
+		run();
+
+		// end include: postamble.js
+
+		// include: postamble_modularize.js
+		// In MODULARIZE mode we wrap the generated code in a factory function
+		// and return either the Module itself, or a promise of the module.
+		//
+		// We assign to the `moduleRtn` global here and configure closure to see
+		// this as and extern so it won't get minified.
+
+		moduleRtn = readyPromise;
+
+		// Assertion for attempting to access module properties on the incoming
+		// moduleArg.  In the past we used this object as the prototype of the module
+		// and assigned properties to it, but now we return a distinct object.  This
+		// keeps the instance private until it is ready (i.e the promise has been
+		// resolved).
+		for (const prop of Object.keys(Module)) {
+			if (!(prop in moduleArg)) {
+				Object.defineProperty(moduleArg, prop, {
+					configurable: true,
+					get() {
+						abort(
+							`Access to module property ('${prop}') is no longer possible via the module constructor argument; Instead, use the result of the module constructor.`,
+						);
+					},
+				});
+			}
+		}
+		// end include: postamble_modularize.js
+
+		return moduleRtn;
+	};
+})();
+export default Module;
diff --git a/docs/favicon.ico b/docs/favicon.ico
new file mode 100644
index 0000000..f1277ee
--- /dev/null
+++ b/docs/favicon.ico
diff --git a/docs/index.html b/docs/index.html
new file mode 100644
index 0000000..e48e877
--- /dev/null
+++ b/docs/index.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<html lang="ja_JP">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/vnd.microsoft.icon" href="/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>PHPerKaigi 2025 デジタルサーカス株式会社トークン問題</title>
+    <script type="module" crossorigin src="/assets/index-CifHWjMi.js"></script>
+    <link rel="stylesheet" crossorigin href="/assets/index-Cfp0VNTF.css">
+  </head>
+  <body>
+    <div id="root"></div>
+  </body>
+</html>
diff --git a/docs/php-wasm.wasm b/docs/php-wasm.wasm
new file mode 100755
index 0000000..dcf4364
--- /dev/null
+++ b/docs/php-wasm.wasm
diff --git a/eslint.config.js b/eslint.config.js
new file mode 100644
index 0000000..fd1b968
--- /dev/null
+++ b/eslint.config.js
@@ -0,0 +1,28 @@
+import js from "@eslint/js";
+import globals from "globals";
+import reactHooks from "eslint-plugin-react-hooks";
+import reactRefresh from "eslint-plugin-react-refresh";
+import tseslint from "typescript-eslint";
+
+export default tseslint.config(
+	{ ignores: ["dist"] },
+	{
+		extends: [js.configs.recommended, ...tseslint.configs.recommended],
+		files: ["**/*.{ts,tsx}"],
+		languageOptions: {
+			ecmaVersion: 2020,
+			globals: globals.browser,
+		},
+		plugins: {
+			"react-hooks": reactHooks,
+			"react-refresh": reactRefresh,
+		},
+		rules: {
+			...reactHooks.configs.recommended.rules,
+			"react-refresh/only-export-components": [
+				"warn",
+				{ allowConstantExport: true },
+			],
+		},
+	},
+);
diff --git a/index.html b/index.html
new file mode 100644
index 0000000..98c89c2
--- /dev/null
+++ b/index.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="ja_JP">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/vnd.microsoft.icon" href="/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>PHPerKaigi 2025 デジタルサーカス株式会社トークン問題</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..b5e5462
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,3420 @@
+{
+  "name": "PHPerKaigi2025-tokens",
+  "version": "0.1.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "PHPerKaigi2025-tokens",
+      "version": "0.1.0",
+      "dependencies": {
+        "react": "^18.3.1",
+        "react-dom": "^18.3.1",
+        "use-debounce": "^10.0.4"
+      },
+      "devDependencies": {
+        "@biomejs/biome": "1.9.4",
+        "@eslint/js": "^9.17.0",
+        "@types/react": "^18.3.18",
+        "@types/react-dom": "^18.3.5",
+        "@vitejs/plugin-react": "^4.3.4",
+        "eslint": "^9.17.0",
+        "eslint-plugin-react-hooks": "^5.0.0",
+        "eslint-plugin-react-refresh": "^0.4.16",
+        "globals": "^15.14.0",
+        "typescript": "~5.6.2",
+        "typescript-eslint": "^8.18.2",
+        "vite": "^6.0.5"
+      }
+    },
+    "node_modules/@ampproject/remapping": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.3.0.tgz",
+      "integrity": "sha512-30iZtAPgz+LTIYoeivqYo853f02jBYSd5uGnGpkFV0M3xOt9aN73erkgYAmZU43x4VfqcnLxW9Kpg3R5LC4YYw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@jridgewell/gen-mapping": "^0.3.5",
+        "@jridgewell/trace-mapping": "^0.3.24"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@babel/code-frame": {
+      "version": "7.26.2",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.26.2.tgz",
+      "integrity": "sha512-RJlIHRueQgwWitWgF8OdFYGZX328Ax5BCemNGlqHfplnRT9ESi8JkFlvaVYbS+UubVY6dpv87Fs2u5M29iNFVQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-validator-identifier": "^7.25.9",
+        "js-tokens": "^4.0.0",
+        "picocolors": "^1.0.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/compat-data": {
+      "version": "7.26.8",
+      "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.26.8.tgz",
+      "integrity": "sha512-oH5UPLMWR3L2wEFLnFJ1TZXqHufiTKAiLfqw5zkhS4dKXLJ10yVztfil/twG8EDTA4F/tvVNw9nOl4ZMslB8rQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/core": {
+      "version": "7.26.10",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.26.10.tgz",
+      "integrity": "sha512-vMqyb7XCDMPvJFFOaT9kxtiRh42GwlZEg1/uIgtZshS5a/8OaduUfCi7kynKgc3Tw/6Uo2D+db9qBttghhmxwQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@ampproject/remapping": "^2.2.0",
+        "@babel/code-frame": "^7.26.2",
+        "@babel/generator": "^7.26.10",
+        "@babel/helper-compilation-targets": "^7.26.5",
+        "@babel/helper-module-transforms": "^7.26.0",
+        "@babel/helpers": "^7.26.10",
+        "@babel/parser": "^7.26.10",
+        "@babel/template": "^7.26.9",
+        "@babel/traverse": "^7.26.10",
+        "@babel/types": "^7.26.10",
+        "convert-source-map": "^2.0.0",
+        "debug": "^4.1.0",
+        "gensync": "^1.0.0-beta.2",
+        "json5": "^2.2.3",
+        "semver": "^6.3.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/babel"
+      }
+    },
+    "node_modules/@babel/generator": {
+      "version": "7.26.10",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.26.10.tgz",
+      "integrity": "sha512-rRHT8siFIXQrAYOYqZQVsAr8vJ+cBNqcVAY6m5V8/4QqzaPl+zDBe6cLEPRDuNOUf3ww8RfJVlOyQMoSI+5Ang==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/parser": "^7.26.10",
+        "@babel/types": "^7.26.10",
+        "@jridgewell/gen-mapping": "^0.3.5",
+        "@jridgewell/trace-mapping": "^0.3.25",
+        "jsesc": "^3.0.2"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-compilation-targets": {
+      "version": "7.26.5",
+      "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.26.5.tgz",
+      "integrity": "sha512-IXuyn5EkouFJscIDuFF5EsiSolseme1s0CZB+QxVugqJLYmKdxI1VfIBOst0SUu4rnk2Z7kqTwmoO1lp3HIfnA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/compat-data": "^7.26.5",
+        "@babel/helper-validator-option": "^7.25.9",
+        "browserslist": "^4.24.0",
+        "lru-cache": "^5.1.1",
+        "semver": "^6.3.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-module-imports": {
+      "version": "7.25.9",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.25.9.tgz",
+      "integrity": "sha512-tnUA4RsrmflIM6W6RFTLFSXITtl0wKjgpnLgXyowocVPrbYrLUXSBXDgTs8BlbmIzIdlBySRQjINYs2BAkiLtw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/traverse": "^7.25.9",
+        "@babel/types": "^7.25.9"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-module-transforms": {
+      "version": "7.26.0",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.26.0.tgz",
+      "integrity": "sha512-xO+xu6B5K2czEnQye6BHA7DolFFmS3LB7stHZFaOLb1pAwO1HWLS8fXA+eh0A2yIvltPVmx3eNNDBJA2SLHXFw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-module-imports": "^7.25.9",
+        "@babel/helper-validator-identifier": "^7.25.9",
+        "@babel/traverse": "^7.25.9"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0"
+      }
+    },
+    "node_modules/@babel/helper-plugin-utils": {
+      "version": "7.26.5",
+      "resolved": "https://registry.npmjs.org/@babel/helper-plugin-utils/-/helper-plugin-utils-7.26.5.tgz",
+      "integrity": "sha512-RS+jZcRdZdRFzMyr+wcsaqOmld1/EqTghfaBGQQd/WnRdzdlvSZ//kF7U8VQTxf1ynZ4cjUcYgjVGx13ewNPMg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-string-parser": {
+      "version": "7.25.9",
+      "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.25.9.tgz",
+      "integrity": "sha512-4A/SCr/2KLd5jrtOMFzaKjVtAei3+2r/NChoBNoZ3EyP/+GlhoaEGoWOZUmFmoITP7zOJyHIMm+DYRd8o3PvHA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-validator-identifier": {
+      "version": "7.25.9",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.25.9.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-validator-option": {
+      "version": "7.25.9",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-option/-/helper-validator-option-7.25.9.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helpers": {
+      "version": "7.26.10",
+      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.26.10.tgz",
+      "integrity": "sha512-UPYc3SauzZ3JGgj87GgZ89JVdC5dj0AoetR5Bw6wj4niittNyFh6+eOGonYvJ1ao6B8lEa3Q3klS7ADZ53bc5g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/template": "^7.26.9",
+        "@babel/types": "^7.26.10"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
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+      "version": "7.26.10",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.26.10.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "@babel/types": "^7.26.10"
+      },
+      "bin": {
+        "parser": "bin/babel-parser.js"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@babel/plugin-transform-react-jsx-self": {
+      "version": "7.25.9",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-react-jsx-self/-/plugin-transform-react-jsx-self-7.25.9.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-plugin-utils": "^7.25.9"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0-0"
+      }
+    },
+    "node_modules/@babel/plugin-transform-react-jsx-source": {
+      "version": "7.25.9",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-react-jsx-source/-/plugin-transform-react-jsx-source-7.25.9.tgz",
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+      "license": "MIT",
+      "dependencies": {
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+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0-0"
+      }
+    },
+    "node_modules/@babel/template": {
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/code-frame": "^7.26.2",
+        "@babel/parser": "^7.26.9",
+        "@babel/types": "^7.26.9"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/traverse": {
+      "version": "7.26.10",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.26.10.tgz",
+      "integrity": "sha512-k8NuDrxr0WrPH5Aupqb2LCVURP/S0vBEn5mK6iH+GIYob66U5EtoZvcdudR2jQ4cmTwhEwW1DLB+Yyas9zjF6A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/code-frame": "^7.26.2",
+        "@babel/generator": "^7.26.10",
+        "@babel/parser": "^7.26.10",
+        "@babel/template": "^7.26.9",
+        "@babel/types": "^7.26.10",
+        "debug": "^4.3.1",
+        "globals": "^11.1.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/traverse/node_modules/globals": {
+      "version": "11.12.0",
+      "resolved": "https://registry.npmjs.org/globals/-/globals-11.12.0.tgz",
+      "integrity": "sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/@babel/types": {
+      "version": "7.26.10",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.26.10.tgz",
+      "integrity": "sha512-emqcG3vHrpxUKTrxcblR36dcrcoRDvKmnL/dCL6ZsHaShW80qxCAcNhzQZrpeM765VzEos+xOi4s+r4IXzTwdQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-string-parser": "^7.25.9",
+        "@babel/helper-validator-identifier": "^7.25.9"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@biomejs/biome": {
+      "version": "1.9.4",
+      "resolved": "https://registry.npmjs.org/@biomejs/biome/-/biome-1.9.4.tgz",
+      "integrity": "sha512-1rkd7G70+o9KkTn5KLmDYXihGoTaIGO9PIIN2ZB7UJxFrWw04CZHPYiMRjYsaDvVV7hP1dYNRLxSANLaBFGpog==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT OR Apache-2.0",
+      "bin": {
+        "biome": "bin/biome"
+      },
+      "engines": {
+        "node": ">=14.21.3"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/biome"
+      },
+      "optionalDependencies": {
+        "@biomejs/cli-darwin-arm64": "1.9.4",
+        "@biomejs/cli-darwin-x64": "1.9.4",
+        "@biomejs/cli-linux-arm64": "1.9.4",
+        "@biomejs/cli-linux-arm64-musl": "1.9.4",
+        "@biomejs/cli-linux-x64": "1.9.4",
+        "@biomejs/cli-linux-x64-musl": "1.9.4",
+        "@biomejs/cli-win32-arm64": "1.9.4",
+        "@biomejs/cli-win32-x64": "1.9.4"
+      }
+    },
+    "node_modules/@biomejs/cli-darwin-arm64": {
+      "version": "1.9.4",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-darwin-arm64/-/cli-darwin-arm64-1.9.4.tgz",
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+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT OR Apache-2.0",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": ">=14.21.3"
+      }
+    },
+    "node_modules/@biomejs/cli-darwin-x64": {
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+      "cpu": [
+        "x64"
+      ],
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+      "dev": true,
+      "funding": [
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/browserslist"
+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/browserslist"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
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+      "dependencies": {
+        "escalade": "^3.2.0",
+        "picocolors": "^1.1.1"
+      },
+      "bin": {
+        "update-browserslist-db": "cli.js"
+      },
+      "peerDependencies": {
+        "browserslist": ">= 4.21.0"
+      }
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+      "version": "4.4.1",
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+      "dev": true,
+      "license": "BSD-2-Clause",
+      "dependencies": {
+        "punycode": "^2.1.0"
+      }
+    },
+    "node_modules/use-debounce": {
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+      "license": "MIT",
+      "engines": {
+        "node": ">= 16.0.0"
+      },
+      "peerDependencies": {
+        "react": "*"
+      }
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+      "resolved": "https://registry.npmjs.org/vite/-/vite-6.2.2.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "esbuild": "^0.25.0",
+        "postcss": "^8.5.3",
+        "rollup": "^4.30.1"
+      },
+      "bin": {
+        "vite": "bin/vite.js"
+      },
+      "engines": {
+        "node": "^18.0.0 || ^20.0.0 || >=22.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/vitejs/vite?sponsor=1"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.3"
+      },
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+        "@types/node": "^18.0.0 || ^20.0.0 || >=22.0.0",
+        "jiti": ">=1.21.0",
+        "less": "*",
+        "lightningcss": "^1.21.0",
+        "sass": "*",
+        "sass-embedded": "*",
+        "stylus": "*",
+        "sugarss": "*",
+        "terser": "^5.16.0",
+        "tsx": "^4.8.1",
+        "yaml": "^2.4.2"
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+        },
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+          "optional": true
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+          "optional": true
+        },
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+          "optional": true
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+          "optional": true
+        },
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+          "optional": true
+        },
+        "stylus": {
+          "optional": true
+        },
+        "sugarss": {
+          "optional": true
+        },
+        "terser": {
+          "optional": true
+        },
+        "tsx": {
+          "optional": true
+        },
+        "yaml": {
+          "optional": true
+        }
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+    },
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+      "version": "2.0.2",
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+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "isexe": "^2.0.0"
+      },
+      "bin": {
+        "node-which": "bin/node-which"
+      },
+      "engines": {
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+      }
+    },
+    "node_modules/word-wrap": {
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+      }
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+    "node_modules/yallist": {
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+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/yocto-queue": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
+      "integrity": "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    }
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..7c8ed8e
--- /dev/null
+++ b/package.json
@@ -0,0 +1,33 @@
+{
+	"name": "PHPerKaigi2025-tokens",
+	"private": true,
+	"version": "0.1.0",
+	"type": "module",
+	"scripts": {
+		"dev": "vite",
+		"build": "tsc -b && vite build",
+		"format": "biome format --write .",
+		"lint": "eslint .",
+		"tsc": "tsc --noEmit",
+		"preview": "vite preview"
+	},
+	"dependencies": {
+		"react": "^18.3.1",
+		"react-dom": "^18.3.1",
+		"use-debounce": "^10.0.4"
+	},
+	"devDependencies": {
+		"@biomejs/biome": "1.9.4",
+		"@eslint/js": "^9.17.0",
+		"@types/react": "^18.3.18",
+		"@types/react-dom": "^18.3.5",
+		"@vitejs/plugin-react": "^4.3.4",
+		"eslint": "^9.17.0",
+		"eslint-plugin-react-hooks": "^5.0.0",
+		"eslint-plugin-react-refresh": "^0.4.16",
+		"globals": "^15.14.0",
+		"typescript": "~5.6.2",
+		"typescript-eslint": "^8.18.2",
+		"vite": "^6.0.5"
+	}
+}
diff --git a/public/favicon.ico b/public/favicon.ico
new file mode 100644
index 0000000..f1277ee
--- /dev/null
+++ b/public/favicon.ico
diff --git a/public/php-wasm.wasm b/public/php-wasm.wasm
new file mode 100755
index 0000000..dcf4364
--- /dev/null
+++ b/public/php-wasm.wasm
diff --git a/src/components/App.tsx b/src/components/App.tsx
new file mode 100644
index 0000000..aa2a386
--- /dev/null
+++ b/src/components/App.tsx
@@ -0,0 +1,72 @@
+import type { QuizGroup } from "../quiz";
+import QuizGroupSection from "./QuizGroupSection";
+
+type Props = {
+	quizGroups: QuizGroup[];
+};
+
+function App({ quizGroups }: Props) {
+	return (
+		<table id="layout">
+			<tr>
+				<td id="header" colSpan={2} className="marquee">
+					<span>PHPerKaigi 2025 デジタルサーカス株式会社トークン問題</span>
+				</td>
+			</tr>
+			<tr>
+				<td id="sidebar">
+					<h2>メニュー</h2>
+					<ul>
+						<li>
+							<a href="">ホーム</a>
+						</li>
+						<li>
+							<a
+								href="https://github.com/nsfisis/PHPerKaigi2024-tokens"
+								target="_blank"
+							>
+								トークン問題2024
+							</a>
+						</li>
+						<li>
+							<a
+								href="https://github.com/nsfisis/PHPerKaigi2023-tokens"
+								target="_blank"
+							>
+								トークン問題2023
+							</a>
+						</li>
+						<li>
+							<a
+								href="https://github.com/nsfisis/PHPerKaigi2022-tokens"
+								target="_blank"
+							>
+								トークン問題2022
+							</a>
+						</li>
+						<li className="hidden">ここにトークンはないよ</li>
+					</ul>
+				</td>
+				<td id="content">
+					<main>
+						<p>
+							PHPerKaigi 2025 の PHPer チャレンジ企画において、
+							<a href="https://www.dgcircus.com/">デジタルサーカス株式会社</a>
+							から出題するトークン問題です (作問{" "}
+							<a href="https://x.com/nsfisis">@nsfisis</a>)。
+						</p>
+						<p>
+							それぞれの問題に、PHP の標準関数がひとつ設定されています。
+							好きな引数を渡すと実行されます。その実行結果を見て、何の関数かを当ててください。
+						</p>
+						{quizGroups.map((group) => (
+							<QuizGroupSection key={group.label} quizGroup={group} />
+						))}
+					</main>
+				</td>
+			</tr>
+		</table>
+	);
+}
+
+export default App;
diff --git a/src/components/FuncExpectedAnswer.tsx b/src/components/FuncExpectedAnswer.tsx
new file mode 100644
index 0000000..f412ba5
--- /dev/null
+++ b/src/components/FuncExpectedAnswer.tsx
@@ -0,0 +1,59 @@
+import type { Quiz } from "../quiz";
+import { execPHP } from "../exec_php";
+import React, { useState, useEffect } from "react";
+import { useDebounce } from "use-debounce";
+
+type Props = {
+	quiz: Quiz;
+};
+
+function FuncExpectedAnswer({ quiz }: Props) {
+	const [argument, setArgument] = useState<string>("123");
+	const [debouncedArgument] = useDebounce(argument, 1000);
+	const [result, setResult] = useState<string>("");
+	const [loading, setLoading] = useState<boolean>(true);
+
+	const handleArgumentChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+		setArgument(e.target.value);
+	};
+
+	useEffect(() => {
+		if (debouncedArgument === "") {
+			setResult("<empty>");
+			return;
+		}
+
+		setLoading(true);
+		setResult("");
+
+		const code = `
+      function f($x) {
+        return ${quiz.func}($x);
+      }
+      try {
+        var_dump(f(${debouncedArgument}));
+      } catch (\\Throwable $e) {
+        echo $e->getMessage(), PHP_EOL;
+      }
+    `;
+
+		execPHP(code).then((result) => {
+			const output = result.stdout + result.stderr;
+			setResult(output.replaceAll(quiz.func, "<answer is masked>"));
+			setLoading(false);
+		});
+	}, [debouncedArgument, quiz.func]);
+
+	return (
+		<div>
+			<code>
+				{`f(`}
+				<input type="text" value={argument} onChange={handleArgumentChange} />
+				{`)`}
+			</code>
+			は <code>{loading ? "running..." : result}</code> を返す。
+		</div>
+	);
+}
+
+export default FuncExpectedAnswer;
diff --git a/src/components/FuncMyAnswer.tsx b/src/components/FuncMyAnswer.tsx
new file mode 100644
index 0000000..63cd427
--- /dev/null
+++ b/src/components/FuncMyAnswer.tsx
@@ -0,0 +1,32 @@
+import type { Quiz } from "../quiz";
+import React, { useState } from "react";
+import { useDebounce } from "use-debounce";
+
+type Props = {
+	quiz: Quiz;
+};
+
+const INITIAL_ANSWER = "your_answer";
+
+function FuncMyAnswer({ quiz }: Props) {
+	const [answer, setAnswer] = useState<string>(INITIAL_ANSWER);
+	const [debouncedAnswer] = useDebounce(answer, 500);
+	const hasAnyAnswer = debouncedAnswer !== INITIAL_ANSWER;
+	const isCorrectAnswer = debouncedAnswer === quiz.func;
+
+	const handleAnswerChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+		setAnswer(e.target.value);
+	};
+
+	return (
+		<div>
+			この関数は？
+			<input type="text" value={answer} onChange={handleAnswerChange} />
+			<p>
+				{hasAnyAnswer && (isCorrectAnswer ? `正解！${quiz.message}` : "不正解")}
+			</p>
+		</div>
+	);
+}
+
+export default FuncMyAnswer;
diff --git a/src/components/QuizGroupSection.tsx b/src/components/QuizGroupSection.tsx
new file mode 100644
index 0000000..b2bbee7
--- /dev/null
+++ b/src/components/QuizGroupSection.tsx
@@ -0,0 +1,19 @@
+import type { QuizGroup } from "../quiz";
+import QuizSection from "./QuizSection";
+
+type Props = {
+	quizGroup: QuizGroup;
+};
+
+function QuizGroupSection({ quizGroup }: Props) {
+	return (
+		<section>
+			<h2>{quizGroup.label}</h2>
+			{quizGroup.quizzes.map((quiz) => (
+				<QuizSection key={quiz.label} quiz={quiz} />
+			))}
+		</section>
+	);
+}
+
+export default QuizGroupSection;
diff --git a/src/components/QuizSection.tsx b/src/components/QuizSection.tsx
new file mode 100644
index 0000000..27dc384
--- /dev/null
+++ b/src/components/QuizSection.tsx
@@ -0,0 +1,19 @@
+import type { Quiz } from "../quiz";
+import FuncExpectedAnswer from "./FuncExpectedAnswer";
+import FuncMyAnswer from "./FuncMyAnswer";
+
+type Props = {
+	quiz: Quiz;
+};
+
+function QuizSection({ quiz }: Props) {
+	return (
+		<section>
+			<h3>{quiz.label}</h3>
+			<FuncExpectedAnswer quiz={quiz} />
+			<FuncMyAnswer quiz={quiz} />
+		</section>
+	);
+}
+
+export default QuizSection;
diff --git a/src/exec_php.ts b/src/exec_php.ts
new file mode 100644
index 0000000..3c38cf4
--- /dev/null
+++ b/src/exec_php.ts
@@ -0,0 +1,95 @@
+import phpWasmBridgeUrl from "./php-wasm-bridge.js?url";
+
+export type PHPExecResult = {
+	success: boolean;
+	stdout: string;
+	stderr: string;
+};
+
+const BUFFER_MAX = 1024;
+
+let fetchingWasmBinaryPromise: Promise<ArrayBuffer> | null = null;
+
+// Fetching is performed only once.
+async function fetchWasmBinary(): Promise<ArrayBuffer> {
+	if (!fetchingWasmBinaryPromise) {
+		fetchingWasmBinaryPromise = new Promise((resolve, reject) => {
+			fetch("/php-wasm.wasm")
+				.then((res) => {
+					if (!res.ok) {
+						reject(`Failed to fetch wasm binary: ${res.status} (${res.url})`);
+					}
+					return res;
+				})
+				.then((res) => res.arrayBuffer())
+				.then((buf) => resolve(buf));
+		});
+	}
+	return fetchingWasmBinaryPromise;
+}
+
+export async function execPHP(code: string): Promise<PHPExecResult> {
+	let stdinPos = 0; // bytewise
+	const stdinBuf = new TextEncoder().encode(code);
+	let stdoutPos = 0; // bytewise
+	const stdoutBuf = new Uint8Array(BUFFER_MAX);
+	let stderrPos = 0; // bytewise
+	const stderrBuf = new Uint8Array(BUFFER_MAX);
+
+	const { default: PHPWasm } = await import(
+		/* @vite-ignore */ phpWasmBridgeUrl
+	);
+	const { ccall } = await PHPWasm({
+		wasmBinary: await fetchWasmBinary(),
+		stdin: () => {
+			if (stdinBuf.length <= stdinPos) {
+				return null;
+			}
+			return stdinBuf[stdinPos++];
+		},
+		stdout: (asciiCode: number | null) => {
+			if (asciiCode === null) {
+				return; // flush
+			}
+			if (BUFFER_MAX <= stdoutPos) {
+				return; // ignore
+			}
+			if (asciiCode < 0) {
+				asciiCode += 256;
+			}
+			stdoutBuf[stdoutPos++] = asciiCode;
+		},
+		stderr: (asciiCode: number | null) => {
+			if (asciiCode === null) {
+				return; // flush
+			}
+			if (BUFFER_MAX <= stderrPos) {
+				return; // ignore
+			}
+			if (asciiCode < 0) {
+				asciiCode += 256;
+			}
+			stderrBuf[stderrPos++] = asciiCode;
+		},
+	});
+
+	let result;
+	let extraError = null;
+	try {
+		result = ccall("php_wasm_run", "number", ["string"], [code]);
+	} catch (e) {
+		if (e instanceof WebAssembly.RuntimeError) {
+			extraError = e.message;
+		} else {
+			throw e;
+		}
+	}
+	const stdout = new TextDecoder().decode(stdoutBuf.subarray(0, stdoutPos));
+	const stderr = new TextDecoder().decode(stderrBuf.subarray(0, stderrPos));
+
+	return {
+		success: result === 0,
+		stdout,
+		stderr: extraError == null ? stderr : `${stderr}\n${extraError}`,
+	};
+}
diff --git a/src/main.tsx b/src/main.tsx
new file mode 100644
index 0000000..6e65eda
--- /dev/null
+++ b/src/main.tsx
@@ -0,0 +1,11 @@
+import { StrictMode } from "react";
+import { createRoot } from "react-dom/client";
+import App from "./components/App.tsx";
+import { QUIZ_GROUPS } from "./quiz_data";
+import "./styles.css";
+
+createRoot(document.getElementById("root")!).render(
+	<StrictMode>
+		<App quizGroups={QUIZ_GROUPS} />
+	</StrictMode>,
+);
diff --git a/src/php-wasm-bridge.js b/src/php-wasm-bridge.js
new file mode 100644
index 0000000..fbf574b
--- /dev/null
+++ b/src/php-wasm-bridge.js
@@ -0,0 +1,8366 @@
+var Module = (() => {
+	var _scriptName = import.meta.url;
+
+	return function (moduleArg = {}) {
+		var moduleRtn;
+
+		// include: shell.js
+		// The Module object: Our interface to the outside world. We import
+		// and export values on it. There are various ways Module can be used:
+		// 1. Not defined. We create it here
+		// 2. A function parameter, function(moduleArg) => Promise<Module>
+		// 3. pre-run appended it, var Module = {}; ..generated code..
+		// 4. External script tag defines var Module.
+		// We need to check if Module already exists (e.g. case 3 above).
+		// Substitution will be replaced with actual code on later stage of the build,
+		// this way Closure Compiler will not mangle it (e.g. case 4. above).
+		// Note that if you want to run closure, and also to use Module
+		// after the generated code, you will need to define   var Module = {};
+		// before the code. Then that object will be used in the code, and you
+		// can continue to use Module afterwards as well.
+		var Module = moduleArg;
+
+		// Set up the promise that indicates the Module is initialized
+		var readyPromiseResolve, readyPromiseReject;
+		var readyPromise = new Promise((resolve, reject) => {
+			readyPromiseResolve = resolve;
+			readyPromiseReject = reject;
+		});
+		[
+			"_memory",
+			"_php_wasm_run",
+			"___indirect_function_table",
+			"onRuntimeInitialized",
+		].forEach((prop) => {
+			if (!Object.getOwnPropertyDescriptor(readyPromise, prop)) {
+				Object.defineProperty(readyPromise, prop, {
+					get: () =>
+						abort(
+							"You are getting " +
+								prop +
+								" on the Promise object, instead of the instance. Use .then() to get called back with the instance, see the MODULARIZE docs in src/settings.js",
+						),
+					set: () =>
+						abort(
+							"You are setting " +
+								prop +
+								" on the Promise object, instead of the instance. Use .then() to get called back with the instance, see the MODULARIZE docs in src/settings.js",
+						),
+				});
+			}
+		});
+
+		// Determine the runtime environment we are in. You can customize this by
+		// setting the ENVIRONMENT setting at compile time (see settings.js).
+
+		var ENVIRONMENT_IS_WEB = true;
+		var ENVIRONMENT_IS_WORKER = false;
+		var ENVIRONMENT_IS_NODE = false;
+		var ENVIRONMENT_IS_SHELL = false;
+
+		// --pre-jses are emitted after the Module integration code, so that they can
+		// refer to Module (if they choose; they can also define Module)
+
+		// Sometimes an existing Module object exists with properties
+		// meant to overwrite the default module functionality. Here
+		// we collect those properties and reapply _after_ we configure
+		// the current environment's defaults to avoid having to be so
+		// defensive during initialization.
+		var moduleOverrides = Object.assign({}, Module);
+
+		var arguments_ = [];
+		var thisProgram = "./this.program";
+		var quit_ = (status, toThrow) => {
+			throw toThrow;
+		};
+
+		// `/` should be present at the end if `scriptDirectory` is not empty
+		var scriptDirectory = "";
+		function locateFile(path) {
+			if (Module["locateFile"]) {
+				return Module["locateFile"](path, scriptDirectory);
+			}
+			return scriptDirectory + path;
+		}
+
+		// Hooks that are implemented differently in different runtime environments.
+		var readAsync, readBinary;
+
+		if (ENVIRONMENT_IS_SHELL) {
+			if (
+				(typeof process == "object" && typeof require === "function") ||
+				typeof window == "object" ||
+				typeof WorkerGlobalScope != "undefined"
+			)
+				throw new Error(
+					"not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)",
+				);
+		}
+
+		// Note that this includes Node.js workers when relevant (pthreads is enabled).
+		// Node.js workers are detected as a combination of ENVIRONMENT_IS_WORKER and
+		// ENVIRONMENT_IS_NODE.
+		else if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
+			if (ENVIRONMENT_IS_WORKER) {
+				// Check worker, not web, since window could be polyfilled
+				scriptDirectory = self.location.href;
+			} else if (typeof document != "undefined" && document.currentScript) {
+				// web
+				scriptDirectory = document.currentScript.src;
+			}
+			// When MODULARIZE, this JS may be executed later, after document.currentScript
+			// is gone, so we saved it, and we use it here instead of any other info.
+			if (_scriptName) {
+				scriptDirectory = _scriptName;
+			}
+			// blob urls look like blob:http://site.com/etc/etc and we cannot infer anything from them.
+			// otherwise, slice off the final part of the url to find the script directory.
+			// if scriptDirectory does not contain a slash, lastIndexOf will return -1,
+			// and scriptDirectory will correctly be replaced with an empty string.
+			// If scriptDirectory contains a query (starting with ?) or a fragment (starting with #),
+			// they are removed because they could contain a slash.
+			if (scriptDirectory.startsWith("blob:")) {
+				scriptDirectory = "";
+			} else {
+				scriptDirectory = scriptDirectory.substr(
+					0,
+					scriptDirectory.replace(/[?#].*/, "").lastIndexOf("/") + 1,
+				);
+			}
+
+			if (
+				!(typeof window == "object" || typeof WorkerGlobalScope != "undefined")
+			)
+				throw new Error(
+					"not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)",
+				);
+
+			{
+				// include: web_or_worker_shell_read.js
+				readAsync = async (url) => {
+					assert(!isFileURI(url), "readAsync does not work with file:// URLs");
+					var response = await fetch(url, { credentials: "same-origin" });
+					if (response.ok) {
+						return response.arrayBuffer();
+					}
+					throw new Error(response.status + " : " + response.url);
+				};
+				// end include: web_or_worker_shell_read.js
+			}
+		} else {
+			throw new Error("environment detection error");
+		}
+
+		var out = Module["print"] || console.log.bind(console);
+		var err = Module["printErr"] || console.error.bind(console);
+
+		// Merge back in the overrides
+		Object.assign(Module, moduleOverrides);
+		// Free the object hierarchy contained in the overrides, this lets the GC
+		// reclaim data used.
+		moduleOverrides = null;
+		checkIncomingModuleAPI();
+
+		// Emit code to handle expected values on the Module object. This applies Module.x
+		// to the proper local x. This has two benefits: first, we only emit it if it is
+		// expected to arrive, and second, by using a local everywhere else that can be
+		// minified.
+
+		if (Module["arguments"]) arguments_ = Module["arguments"];
+		legacyModuleProp("arguments", "arguments_");
+
+		if (Module["thisProgram"]) thisProgram = Module["thisProgram"];
+		legacyModuleProp("thisProgram", "thisProgram");
+
+		// perform assertions in shell.js after we set up out() and err(), as otherwise if an assertion fails it cannot print the message
+		// Assertions on removed incoming Module JS APIs.
+		assert(
+			typeof Module["memoryInitializerPrefixURL"] == "undefined",
+			"Module.memoryInitializerPrefixURL option was removed, use Module.locateFile instead",
+		);
+		assert(
+			typeof Module["pthreadMainPrefixURL"] == "undefined",
+			"Module.pthreadMainPrefixURL option was removed, use Module.locateFile instead",
+		);
+		assert(
+			typeof Module["cdInitializerPrefixURL"] == "undefined",
+			"Module.cdInitializerPrefixURL option was removed, use Module.locateFile instead",
+		);
+		assert(
+			typeof Module["filePackagePrefixURL"] == "undefined",
+			"Module.filePackagePrefixURL option was removed, use Module.locateFile instead",
+		);
+		assert(
+			typeof Module["read"] == "undefined",
+			"Module.read option was removed",
+		);
+		assert(
+			typeof Module["readAsync"] == "undefined",
+			"Module.readAsync option was removed (modify readAsync in JS)",
+		);
+		assert(
+			typeof Module["readBinary"] == "undefined",
+			"Module.readBinary option was removed (modify readBinary in JS)",
+		);
+		assert(
+			typeof Module["setWindowTitle"] == "undefined",
+			"Module.setWindowTitle option was removed (modify emscripten_set_window_title in JS)",
+		);
+		assert(
+			typeof Module["TOTAL_MEMORY"] == "undefined",
+			"Module.TOTAL_MEMORY has been renamed Module.INITIAL_MEMORY",
+		);
+		legacyModuleProp("asm", "wasmExports");
+		legacyModuleProp("readAsync", "readAsync");
+		legacyModuleProp("readBinary", "readBinary");
+		legacyModuleProp("setWindowTitle", "setWindowTitle");
+		var IDBFS = "IDBFS is no longer included by default; build with -lidbfs.js";
+		var PROXYFS =
+			"PROXYFS is no longer included by default; build with -lproxyfs.js";
+		var WORKERFS =
+			"WORKERFS is no longer included by default; build with -lworkerfs.js";
+		var FETCHFS =
+			"FETCHFS is no longer included by default; build with -lfetchfs.js";
+		var ICASEFS =
+			"ICASEFS is no longer included by default; build with -licasefs.js";
+		var JSFILEFS =
+			"JSFILEFS is no longer included by default; build with -ljsfilefs.js";
+		var OPFS = "OPFS is no longer included by default; build with -lopfs.js";
+
+		var NODEFS =
+			"NODEFS is no longer included by default; build with -lnodefs.js";
+
+		assert(
+			!ENVIRONMENT_IS_WORKER,
+			"worker environment detected but not enabled at build time.  Add `worker` to `-sENVIRONMENT` to enable.",
+		);
+
+		assert(
+			!ENVIRONMENT_IS_NODE,
+			"node environment detected but not enabled at build time.  Add `node` to `-sENVIRONMENT` to enable.",
+		);
+
+		assert(
+			!ENVIRONMENT_IS_SHELL,
+			"shell environment detected but not enabled at build time.  Add `shell` to `-sENVIRONMENT` to enable.",
+		);
+
+		// end include: shell.js
+
+		// include: preamble.js
+		// === Preamble library stuff ===
+
+		// Documentation for the public APIs defined in this file must be updated in:
+		//    site/source/docs/api_reference/preamble.js.rst
+		// A prebuilt local version of the documentation is available at:
+		//    site/build/text/docs/api_reference/preamble.js.txt
+		// You can also build docs locally as HTML or other formats in site/
+		// An online HTML version (which may be of a different version of Emscripten)
+		//    is up at http://kripken.github.io/emscripten-site/docs/api_reference/preamble.js.html
+
+		var wasmBinary = Module["wasmBinary"];
+		legacyModuleProp("wasmBinary", "wasmBinary");
+
+		if (typeof WebAssembly != "object") {
+			err("no native wasm support detected");
+		}
+
+		// Wasm globals
+
+		var wasmMemory;
+
+		//========================================
+		// Runtime essentials
+		//========================================
+
+		// whether we are quitting the application. no code should run after this.
+		// set in exit() and abort()
+		var ABORT = false;
+
+		// set by exit() and abort().  Passed to 'onExit' handler.
+		// NOTE: This is also used as the process return code code in shell environments
+		// but only when noExitRuntime is false.
+		var EXITSTATUS;
+
+		// In STRICT mode, we only define assert() when ASSERTIONS is set.  i.e. we
+		// don't define it at all in release modes.  This matches the behaviour of
+		// MINIMAL_RUNTIME.
+		// TODO(sbc): Make this the default even without STRICT enabled.
+		/** @type {function(*, string=)} */
+		function assert(condition, text) {
+			if (!condition) {
+				abort("Assertion failed" + (text ? ": " + text : ""));
+			}
+		}
+
+		// We used to include malloc/free by default in the past. Show a helpful error in
+		// builds with assertions.
+		function _free() {
+			// Show a helpful error since we used to include free by default in the past.
+			abort(
+				"free() called but not included in the build - add `_free` to EXPORTED_FUNCTIONS",
+			);
+		}
+
+		// Memory management
+
+		var HEAP,
+			/** @type {!Int8Array} */
+			HEAP8,
+			/** @type {!Uint8Array} */
+			HEAPU8,
+			/** @type {!Int16Array} */
+			HEAP16,
+			/** @type {!Uint16Array} */
+			HEAPU16,
+			/** @type {!Int32Array} */
+			HEAP32,
+			/** @type {!Uint32Array} */
+			HEAPU32,
+			/** @type {!Float32Array} */
+			HEAPF32,
+			/** @type {!Float64Array} */
+			HEAPF64;
+
+		// include: runtime_shared.js
+		function updateMemoryViews() {
+			var b = wasmMemory.buffer;
+			Module["HEAP8"] = HEAP8 = new Int8Array(b);
+			Module["HEAP16"] = HEAP16 = new Int16Array(b);
+			Module["HEAPU8"] = HEAPU8 = new Uint8Array(b);
+			Module["HEAPU16"] = HEAPU16 = new Uint16Array(b);
+			Module["HEAP32"] = HEAP32 = new Int32Array(b);
+			Module["HEAPU32"] = HEAPU32 = new Uint32Array(b);
+			Module["HEAPF32"] = HEAPF32 = new Float32Array(b);
+			Module["HEAPF64"] = HEAPF64 = new Float64Array(b);
+		}
+
+		// end include: runtime_shared.js
+		assert(
+			!Module["STACK_SIZE"],
+			"STACK_SIZE can no longer be set at runtime.  Use -sSTACK_SIZE at link time",
+		);
+
+		assert(
+			typeof Int32Array != "undefined" &&
+				typeof Float64Array !== "undefined" &&
+				Int32Array.prototype.subarray != undefined &&
+				Int32Array.prototype.set != undefined,
+			"JS engine does not provide full typed array support",
+		);
+
+		// If memory is defined in wasm, the user can't provide it, or set INITIAL_MEMORY
+		assert(
+			!Module["wasmMemory"],
+			"Use of `wasmMemory` detected.  Use -sIMPORTED_MEMORY to define wasmMemory externally",
+		);
+		assert(
+			!Module["INITIAL_MEMORY"],
+			"Detected runtime INITIAL_MEMORY setting.  Use -sIMPORTED_MEMORY to define wasmMemory dynamically",
+		);
+
+		// include: runtime_stack_check.js
+		// Initializes the stack cookie. Called at the startup of main and at the startup of each thread in pthreads mode.
+		function writeStackCookie() {
+			var max = _emscripten_stack_get_end();
+			assert((max & 3) == 0);
+			// If the stack ends at address zero we write our cookies 4 bytes into the
+			// stack.  This prevents interference with SAFE_HEAP and ASAN which also
+			// monitor writes to address zero.
+			if (max == 0) {
+				max += 4;
+			}
+			// The stack grow downwards towards _emscripten_stack_get_end.
+			// We write cookies to the final two words in the stack and detect if they are
+			// ever overwritten.
+			HEAPU32[max >> 2] = 0x02135467;
+			HEAPU32[(max + 4) >> 2] = 0x89bacdfe;
+			// Also test the global address 0 for integrity.
+			HEAPU32[0 >> 2] = 1668509029;
+		}
+
+		function checkStackCookie() {
+			if (ABORT) return;
+			var max = _emscripten_stack_get_end();
+			// See writeStackCookie().
+			if (max == 0) {
+				max += 4;
+			}
+			var cookie1 = HEAPU32[max >> 2];
+			var cookie2 = HEAPU32[(max + 4) >> 2];
+			if (cookie1 != 0x02135467 || cookie2 != 0x89bacdfe) {
+				abort(
+					`Stack overflow! Stack cookie has been overwritten at ${ptrToString(max)}, expected hex dwords 0x89BACDFE and 0x2135467, but received ${ptrToString(cookie2)} ${ptrToString(cookie1)}`,
+				);
+			}
+			// Also test the global address 0 for integrity.
+			if (HEAPU32[0 >> 2] != 0x63736d65 /* 'emsc' */) {
+				abort(
+					"Runtime error: The application has corrupted its heap memory area (address zero)!",
+				);
+			}
+		}
+		// end include: runtime_stack_check.js
+		var __ATPRERUN__ = []; // functions called before the runtime is initialized
+		var __ATINIT__ = []; // functions called during startup
+		var __ATEXIT__ = []; // functions called during shutdown
+		var __ATPOSTRUN__ = []; // functions called after the main() is called
+
+		var runtimeInitialized = false;
+
+		function preRun() {
+			if (Module["preRun"]) {
+				if (typeof Module["preRun"] == "function")
+					Module["preRun"] = [Module["preRun"]];
+				while (Module["preRun"].length) {
+					addOnPreRun(Module["preRun"].shift());
+				}
+			}
+			callRuntimeCallbacks(__ATPRERUN__);
+		}
+
+		function initRuntime() {
+			assert(!runtimeInitialized);
+			runtimeInitialized = true;
+
+			checkStackCookie();
+
+			if (!Module["noFSInit"] && !FS.initialized) FS.init();
+			FS.ignorePermissions = false;
+
+			TTY.init();
+			SOCKFS.root = FS.mount(SOCKFS, {}, null);
+			PIPEFS.root = FS.mount(PIPEFS, {}, null);
+			callRuntimeCallbacks(__ATINIT__);
+		}
+
+		function postRun() {
+			checkStackCookie();
+
+			if (Module["postRun"]) {
+				if (typeof Module["postRun"] == "function")
+					Module["postRun"] = [Module["postRun"]];
+				while (Module["postRun"].length) {
+					addOnPostRun(Module["postRun"].shift());
+				}
+			}
+
+			callRuntimeCallbacks(__ATPOSTRUN__);
+		}
+
+		function addOnPreRun(cb) {
+			__ATPRERUN__.unshift(cb);
+		}
+
+		function addOnInit(cb) {
+			__ATINIT__.unshift(cb);
+		}
+
+		function addOnExit(cb) {}
+
+		function addOnPostRun(cb) {
+			__ATPOSTRUN__.unshift(cb);
+		}
+
+		// include: runtime_math.js
+		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/imul
+
+		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/fround
+
+		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32
+
+		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc
+
+		assert(
+			Math.imul,
+			"This browser does not support Math.imul(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill",
+		);
+		assert(
+			Math.fround,
+			"This browser does not support Math.fround(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill",
+		);
+		assert(
+			Math.clz32,
+			"This browser does not support Math.clz32(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill",
+		);
+		assert(
+			Math.trunc,
+			"This browser does not support Math.trunc(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill",
+		);
+		// end include: runtime_math.js
+		// A counter of dependencies for calling run(). If we need to
+		// do asynchronous work before running, increment this and
+		// decrement it. Incrementing must happen in a place like
+		// Module.preRun (used by emcc to add file preloading).
+		// Note that you can add dependencies in preRun, even though
+		// it happens right before run - run will be postponed until
+		// the dependencies are met.
+		var runDependencies = 0;
+		var dependenciesFulfilled = null; // overridden to take different actions when all run dependencies are fulfilled
+		var runDependencyTracking = {};
+		var runDependencyWatcher = null;
+
+		function getUniqueRunDependency(id) {
+			var orig = id;
+			while (1) {
+				if (!runDependencyTracking[id]) return id;
+				id = orig + Math.random();
+			}
+		}
+
+		function addRunDependency(id) {
+			runDependencies++;
+
+			Module["monitorRunDependencies"]?.(runDependencies);
+
+			if (id) {
+				assert(!runDependencyTracking[id]);
+				runDependencyTracking[id] = 1;
+				if (
+					runDependencyWatcher === null &&
+					typeof setInterval != "undefined"
+				) {
+					// Check for missing dependencies every few seconds
+					runDependencyWatcher = setInterval(() => {
+						if (ABORT) {
+							clearInterval(runDependencyWatcher);
+							runDependencyWatcher = null;
+							return;
+						}
+						var shown = false;
+						for (var dep in runDependencyTracking) {
+							if (!shown) {
+								shown = true;
+								err("still waiting on run dependencies:");
+							}
+							err(`dependency: ${dep}`);
+						}
+						if (shown) {
+							err("(end of list)");
+						}
+					}, 10000);
+				}
+			} else {
+				err("warning: run dependency added without ID");
+			}
+		}
+
+		function removeRunDependency(id) {
+			runDependencies--;
+
+			Module["monitorRunDependencies"]?.(runDependencies);
+
+			if (id) {
+				assert(runDependencyTracking[id]);
+				delete runDependencyTracking[id];
+			} else {
+				err("warning: run dependency removed without ID");
+			}
+			if (runDependencies == 0) {
+				if (runDependencyWatcher !== null) {
+					clearInterval(runDependencyWatcher);
+					runDependencyWatcher = null;
+				}
+				if (dependenciesFulfilled) {
+					var callback = dependenciesFulfilled;
+					dependenciesFulfilled = null;
+					callback(); // can add another dependenciesFulfilled
+				}
+			}
+		}
+
+		/** @param {string|number=} what */
+		function abort(what) {
+			Module["onAbort"]?.(what);
+
+			what = "Aborted(" + what + ")";
+			// TODO(sbc): Should we remove printing and leave it up to whoever
+			// catches the exception?
+			err(what);
+
+			ABORT = true;
+
+			// Use a wasm runtime error, because a JS error might be seen as a foreign
+			// exception, which means we'd run destructors on it. We need the error to
+			// simply make the program stop.
+			// FIXME This approach does not work in Wasm EH because it currently does not assume
+			// all RuntimeErrors are from traps; it decides whether a RuntimeError is from
+			// a trap or not based on a hidden field within the object. So at the moment
+			// we don't have a way of throwing a wasm trap from JS. TODO Make a JS API that
+			// allows this in the wasm spec.
+
+			// Suppress closure compiler warning here. Closure compiler's builtin extern
+			// definition for WebAssembly.RuntimeError claims it takes no arguments even
+			// though it can.
+			// TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure gets fixed.
+			/** @suppress {checkTypes} */
+			var e = new WebAssembly.RuntimeError(what);
+
+			readyPromiseReject(e);
+			// Throw the error whether or not MODULARIZE is set because abort is used
+			// in code paths apart from instantiation where an exception is expected
+			// to be thrown when abort is called.
+			throw e;
+		}
+
+		// include: memoryprofiler.js
+		// end include: memoryprofiler.js
+		// include: URIUtils.js
+		// Prefix of data URIs emitted by SINGLE_FILE and related options.
+		var dataURIPrefix = "data:application/octet-stream;base64,";
+
+		/**
+		 * Indicates whether filename is a base64 data URI.
+		 * @noinline
+		 */
+		var isDataURI = (filename) => filename.startsWith(dataURIPrefix);
+
+		/**
+		 * Indicates whether filename is delivered via file protocol (as opposed to http/https)
+		 * @noinline
+		 */
+		var isFileURI = (filename) => filename.startsWith("file://");
+		// end include: URIUtils.js
+		function createExportWrapper(name, nargs) {
+			return (...args) => {
+				assert(
+					runtimeInitialized,
+					`native function \`${name}\` called before runtime initialization`,
+				);
+				var f = wasmExports[name];
+				assert(f, `exported native function \`${name}\` not found`);
+				// Only assert for too many arguments. Too few can be valid since the missing arguments will be zero filled.
+				assert(
+					args.length <= nargs,
+					`native function \`${name}\` called with ${args.length} args but expects ${nargs}`,
+				);
+				return f(...args);
+			};
+		}
+
+		// include: runtime_exceptions.js
+		// end include: runtime_exceptions.js
+		function findWasmBinary() {
+			if (Module["locateFile"]) {
+				var f = "php-wasm.wasm";
+				if (!isDataURI(f)) {
+					return locateFile(f);
+				}
+				return f;
+			}
+			// Use bundler-friendly `new URL(..., import.meta.url)` pattern; works in browsers too.
+			return new URL("php-wasm.wasm", import.meta.url).href;
+		}
+
+		var wasmBinaryFile;
+
+		function getBinarySync(file) {
+			if (file == wasmBinaryFile && wasmBinary) {
+				return new Uint8Array(wasmBinary);
+			}
+			if (readBinary) {
+				return readBinary(file);
+			}
+			throw "both async and sync fetching of the wasm failed";
+		}
+
+		async function getWasmBinary(binaryFile) {
+			// If we don't have the binary yet, load it asynchronously using readAsync.
+			if (!wasmBinary) {
+				// Fetch the binary using readAsync
+				try {
+					var response = await readAsync(binaryFile);
+					return new Uint8Array(response);
+				} catch {
+					// Fall back to getBinarySync below;
+				}
+			}
+
+			// Otherwise, getBinarySync should be able to get it synchronously
+			return getBinarySync(binaryFile);
+		}
+
+		async function instantiateArrayBuffer(binaryFile, imports) {
+			try {
+				var binary = await getWasmBinary(binaryFile);
+				var instance = await WebAssembly.instantiate(binary, imports);
+				return instance;
+			} catch (reason) {
+				err(`failed to asynchronously prepare wasm: ${reason}`);
+
+				// Warn on some common problems.
+				if (isFileURI(wasmBinaryFile)) {
+					err(
+						`warning: Loading from a file URI (${wasmBinaryFile}) is not supported in most browsers. See https://emscripten.org/docs/getting_started/FAQ.html#how-do-i-run-a-local-webserver-for-testing-why-does-my-program-stall-in-downloading-or-preparing`,
+					);
+				}
+				abort(reason);
+			}
+		}
+
+		async function instantiateAsync(binary, binaryFile, imports) {
+			if (
+				!binary &&
+				typeof WebAssembly.instantiateStreaming == "function" &&
+				!isDataURI(binaryFile) &&
+				typeof fetch == "function"
+			) {
+				try {
+					var response = fetch(binaryFile, { credentials: "same-origin" });
+					var instantiationResult = await WebAssembly.instantiateStreaming(
+						response,
+						imports,
+					);
+					return instantiationResult;
+				} catch (reason) {
+					// We expect the most common failure cause to be a bad MIME type for the binary,
+					// in which case falling back to ArrayBuffer instantiation should work.
+					err(`wasm streaming compile failed: ${reason}`);
+					err("falling back to ArrayBuffer instantiation");
+					// fall back of instantiateArrayBuffer below
+				}
+			}
+			return instantiateArrayBuffer(binaryFile, imports);
+		}
+
+		function getWasmImports() {
+			// prepare imports
+			return {
+				env: wasmImports,
+				wasi_snapshot_preview1: wasmImports,
+			};
+		}
+
+		// Create the wasm instance.
+		// Receives the wasm imports, returns the exports.
+		async function createWasm() {
+			// Load the wasm module and create an instance of using native support in the JS engine.
+			// handle a generated wasm instance, receiving its exports and
+			// performing other necessary setup
+			/** @param {WebAssembly.Module=} module*/
+			function receiveInstance(instance, module) {
+				wasmExports = instance.exports;
+
+				wasmMemory = wasmExports["memory"];
+
+				assert(wasmMemory, "memory not found in wasm exports");
+				updateMemoryViews();
+
+				wasmTable = wasmExports["__indirect_function_table"];
+
+				assert(wasmTable, "table not found in wasm exports");
+
+				addOnInit(wasmExports["__wasm_call_ctors"]);
+
+				removeRunDependency("wasm-instantiate");
+				return wasmExports;
+			}
+			// wait for the pthread pool (if any)
+			addRunDependency("wasm-instantiate");
+
+			// Prefer streaming instantiation if available.
+			// Async compilation can be confusing when an error on the page overwrites Module
+			// (for example, if the order of elements is wrong, and the one defining Module is
+			// later), so we save Module and check it later.
+			var trueModule = Module;
+			function receiveInstantiationResult(result) {
+				// 'result' is a ResultObject object which has both the module and instance.
+				// receiveInstance() will swap in the exports (to Module.asm) so they can be called
+				assert(
+					Module === trueModule,
+					"the Module object should not be replaced during async compilation - perhaps the order of HTML elements is wrong?",
+				);
+				trueModule = null;
+				// TODO: Due to Closure regression https://github.com/google/closure-compiler/issues/3193, the above line no longer optimizes out down to the following line.
+				// When the regression is fixed, can restore the above PTHREADS-enabled path.
+				receiveInstance(result["instance"]);
+			}
+
+			var info = getWasmImports();
+
+			// User shell pages can write their own Module.instantiateWasm = function(imports, successCallback) callback
+			// to manually instantiate the Wasm module themselves. This allows pages to
+			// run the instantiation parallel to any other async startup actions they are
+			// performing.
+			// Also pthreads and wasm workers initialize the wasm instance through this
+			// path.
+			if (Module["instantiateWasm"]) {
+				try {
+					return Module["instantiateWasm"](info, receiveInstance);
+				} catch (e) {
+					err(`Module.instantiateWasm callback failed with error: ${e}`);
+					// If instantiation fails, reject the module ready promise.
+					readyPromiseReject(e);
+				}
+			}
+
+			wasmBinaryFile ??= findWasmBinary();
+
+			try {
+				var result = await instantiateAsync(wasmBinary, wasmBinaryFile, info);
+				receiveInstantiationResult(result);
+				return result;
+			} catch (e) {
+				// If instantiation fails, reject the module ready promise.
+				readyPromiseReject(e);
+				return;
+			}
+		}
+
+		// Globals used by JS i64 conversions (see makeSetValue)
+		var tempDouble;
+		var tempI64;
+
+		// include: runtime_debug.js
+		// Endianness check
+		(() => {
+			var h16 = new Int16Array(1);
+			var h8 = new Int8Array(h16.buffer);
+			h16[0] = 0x6373;
+			if (h8[0] !== 0x73 || h8[1] !== 0x63)
+				throw "Runtime error: expected the system to be little-endian! (Run with -sSUPPORT_BIG_ENDIAN to bypass)";
+		})();
+
+		if (Module["ENVIRONMENT"]) {
+			throw new Error(
+				"Module.ENVIRONMENT has been deprecated. To force the environment, use the ENVIRONMENT compile-time option (for example, -sENVIRONMENT=web or -sENVIRONMENT=node)",
+			);
+		}
+
+		function legacyModuleProp(prop, newName, incoming = true) {
+			if (!Object.getOwnPropertyDescriptor(Module, prop)) {
+				Object.defineProperty(Module, prop, {
+					configurable: true,
+					get() {
+						let extra = incoming
+							? " (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)"
+							: "";
+						abort(
+							`\`Module.${prop}\` has been replaced by \`${newName}\`` + extra,
+						);
+					},
+				});
+			}
+		}
+
+		function ignoredModuleProp(prop) {
+			if (Object.getOwnPropertyDescriptor(Module, prop)) {
+				abort(
+					`\`Module.${prop}\` was supplied but \`${prop}\` not included in INCOMING_MODULE_JS_API`,
+				);
+			}
+		}
+
+		// forcing the filesystem exports a few things by default
+		function isExportedByForceFilesystem(name) {
+			return (
+				name === "FS_createPath" ||
+				name === "FS_createDataFile" ||
+				name === "FS_createPreloadedFile" ||
+				name === "FS_unlink" ||
+				name === "addRunDependency" ||
+				// The old FS has some functionality that WasmFS lacks.
+				name === "FS_createLazyFile" ||
+				name === "FS_createDevice" ||
+				name === "removeRunDependency"
+			);
+		}
+
+		/**
+		 * Intercept access to a global symbol.  This enables us to give informative
+		 * warnings/errors when folks attempt to use symbols they did not include in
+		 * their build, or no symbols that no longer exist.
+		 */
+		function hookGlobalSymbolAccess(sym, func) {
+			if (
+				typeof globalThis != "undefined" &&
+				!Object.getOwnPropertyDescriptor(globalThis, sym)
+			) {
+				Object.defineProperty(globalThis, sym, {
+					configurable: true,
+					get() {
+						func();
+						return undefined;
+					},
+				});
+			}
+		}
+
+		function missingGlobal(sym, msg) {
+			hookGlobalSymbolAccess(sym, () => {
+				warnOnce(`\`${sym}\` is not longer defined by emscripten. ${msg}`);
+			});
+		}
+
+		missingGlobal("buffer", "Please use HEAP8.buffer or wasmMemory.buffer");
+		missingGlobal("asm", "Please use wasmExports instead");
+
+		function missingLibrarySymbol(sym) {
+			hookGlobalSymbolAccess(sym, () => {
+				// Can't `abort()` here because it would break code that does runtime
+				// checks.  e.g. `if (typeof SDL === 'undefined')`.
+				var msg = `\`${sym}\` is a library symbol and not included by default; add it to your library.js __deps or to DEFAULT_LIBRARY_FUNCS_TO_INCLUDE on the command line`;
+				// DEFAULT_LIBRARY_FUNCS_TO_INCLUDE requires the name as it appears in
+				// library.js, which means $name for a JS name with no prefix, or name
+				// for a JS name like _name.
+				var librarySymbol = sym;
+				if (!librarySymbol.startsWith("_")) {
+					librarySymbol = "$" + sym;
+				}
+				msg += ` (e.g. -sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE='${librarySymbol}')`;
+				if (isExportedByForceFilesystem(sym)) {
+					msg +=
+						". Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you";
+				}
+				warnOnce(msg);
+			});
+
+			// Any symbol that is not included from the JS library is also (by definition)
+			// not exported on the Module object.
+			unexportedRuntimeSymbol(sym);
+		}
+
+		function unexportedRuntimeSymbol(sym) {
+			if (!Object.getOwnPropertyDescriptor(Module, sym)) {
+				Object.defineProperty(Module, sym, {
+					configurable: true,
+					get() {
+						var msg = `'${sym}' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the Emscripten FAQ)`;
+						if (isExportedByForceFilesystem(sym)) {
+							msg +=
+								". Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you";
+						}
+						abort(msg);
+					},
+				});
+			}
+		}
+
+		// Used by XXXXX_DEBUG settings to output debug messages.
+		function dbg(...args) {
+			// TODO(sbc): Make this configurable somehow.  Its not always convenient for
+			// logging to show up as warnings.
+			console.warn(...args);
+		}
+		// end include: runtime_debug.js
+		// === Body ===
+		// end include: preamble.js
+
+		class ExitStatus {
+			name = "ExitStatus";
+			constructor(status) {
+				this.message = `Program terminated with exit(${status})`;
+				this.status = status;
+			}
+		}
+
+		var callRuntimeCallbacks = (callbacks) => {
+			while (callbacks.length > 0) {
+				// Pass the module as the first argument.
+				callbacks.shift()(Module);
+			}
+		};
+
+		/**
+		 * @param {number} ptr
+		 * @param {string} type
+		 */
+		function getValue(ptr, type = "i8") {
+			if (type.endsWith("*")) type = "*";
+			switch (type) {
+				case "i1":
+					return HEAP8[ptr];
+				case "i8":
+					return HEAP8[ptr];
+				case "i16":
+					return HEAP16[ptr >> 1];
+				case "i32":
+					return HEAP32[ptr >> 2];
+				case "i64":
+					abort("to do getValue(i64) use WASM_BIGINT");
+				case "float":
+					return HEAPF32[ptr >> 2];
+				case "double":
+					return HEAPF64[ptr >> 3];
+				case "*":
+					return HEAPU32[ptr >> 2];
+				default:
+					abort(`invalid type for getValue: ${type}`);
+			}
+		}
+
+		var noExitRuntime = Module["noExitRuntime"] || true;
+
+		var ptrToString = (ptr) => {
+			assert(typeof ptr === "number");
+			// With CAN_ADDRESS_2GB or MEMORY64, pointers are already unsigned.
+			ptr >>>= 0;
+			return "0x" + ptr.toString(16).padStart(8, "0");
+		};
+
+		/**
+		 * @param {number} ptr
+		 * @param {number} value
+		 * @param {string} type
+		 */
+		function setValue(ptr, value, type = "i8") {
+			if (type.endsWith("*")) type = "*";
+			switch (type) {
+				case "i1":
+					HEAP8[ptr] = value;
+					break;
+				case "i8":
+					HEAP8[ptr] = value;
+					break;
+				case "i16":
+					HEAP16[ptr >> 1] = value;
+					break;
+				case "i32":
+					HEAP32[ptr >> 2] = value;
+					break;
+				case "i64":
+					abort("to do setValue(i64) use WASM_BIGINT");
+				case "float":
+					HEAPF32[ptr >> 2] = value;
+					break;
+				case "double":
+					HEAPF64[ptr >> 3] = value;
+					break;
+				case "*":
+					HEAPU32[ptr >> 2] = value;
+					break;
+				default:
+					abort(`invalid type for setValue: ${type}`);
+			}
+		}
+
+		var stackRestore = (val) => __emscripten_stack_restore(val);
+
+		var stackSave = () => _emscripten_stack_get_current();
+
+		var warnOnce = (text) => {
+			warnOnce.shown ||= {};
+			if (!warnOnce.shown[text]) {
+				warnOnce.shown[text] = 1;
+				err(text);
+			}
+		};
+
+		var UTF8Decoder =
+			typeof TextDecoder != "undefined" ? new TextDecoder() : undefined;
+
+		/**
+		 * Given a pointer 'idx' to a null-terminated UTF8-encoded string in the given
+		 * array that contains uint8 values, returns a copy of that string as a
+		 * Javascript String object.
+		 * heapOrArray is either a regular array, or a JavaScript typed array view.
+		 * @param {number=} idx
+		 * @param {number=} maxBytesToRead
+		 * @return {string}
+		 */
+		var UTF8ArrayToString = (heapOrArray, idx = 0, maxBytesToRead = NaN) => {
+			var endIdx = idx + maxBytesToRead;
+			var endPtr = idx;
+			// TextDecoder needs to know the byte length in advance, it doesn't stop on
+			// null terminator by itself.  Also, use the length info to avoid running tiny
+			// strings through TextDecoder, since .subarray() allocates garbage.
+			// (As a tiny code save trick, compare endPtr against endIdx using a negation,
+			// so that undefined/NaN means Infinity)
+			while (heapOrArray[endPtr] && !(endPtr >= endIdx)) ++endPtr;
+
+			if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
+				return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr));
+			}
+			var str = "";
+			// If building with TextDecoder, we have already computed the string length
+			// above, so test loop end condition against that
+			while (idx < endPtr) {
+				// For UTF8 byte structure, see:
+				// http://en.wikipedia.org/wiki/UTF-8#Description
+				// https://www.ietf.org/rfc/rfc2279.txt
+				// https://tools.ietf.org/html/rfc3629
+				var u0 = heapOrArray[idx++];
+				if (!(u0 & 0x80)) {
+					str += String.fromCharCode(u0);
+					continue;
+				}
+				var u1 = heapOrArray[idx++] & 63;
+				if ((u0 & 0xe0) == 0xc0) {
+					str += String.fromCharCode(((u0 & 31) << 6) | u1);
+					continue;
+				}
+				var u2 = heapOrArray[idx++] & 63;
+				if ((u0 & 0xf0) == 0xe0) {
+					u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
+				} else {
+					if ((u0 & 0xf8) != 0xf0)
+						warnOnce(
+							"Invalid UTF-8 leading byte " +
+								ptrToString(u0) +
+								" encountered when deserializing a UTF-8 string in wasm memory to a JS string!",
+						);
+					u0 =
+						((u0 & 7) << 18) |
+						(u1 << 12) |
+						(u2 << 6) |
+						(heapOrArray[idx++] & 63);
+				}
+
+				if (u0 < 0x10000) {
+					str += String.fromCharCode(u0);
+				} else {
+					var ch = u0 - 0x10000;
+					str += String.fromCharCode(
+						0xd800 | (ch >> 10),
+						0xdc00 | (ch & 0x3ff),
+					);
+				}
+			}
+			return str;
+		};
+
+		/**
+		 * Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the
+		 * emscripten HEAP, returns a copy of that string as a Javascript String object.
+		 *
+		 * @param {number} ptr
+		 * @param {number=} maxBytesToRead - An optional length that specifies the
+		 *   maximum number of bytes to read. You can omit this parameter to scan the
+		 *   string until the first 0 byte. If maxBytesToRead is passed, and the string
+		 *   at [ptr, ptr+maxBytesToReadr[ contains a null byte in the middle, then the
+		 *   string will cut short at that byte index (i.e. maxBytesToRead will not
+		 *   produce a string of exact length [ptr, ptr+maxBytesToRead[) N.B. mixing
+		 *   frequent uses of UTF8ToString() with and without maxBytesToRead may throw
+		 *   JS JIT optimizations off, so it is worth to consider consistently using one
+		 * @return {string}
+		 */
+		var UTF8ToString = (ptr, maxBytesToRead) => {
+			assert(
+				typeof ptr == "number",
+				`UTF8ToString expects a number (got ${typeof ptr})`,
+			);
+			return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : "";
+		};
+		var ___assert_fail = (condition, filename, line, func) =>
+			abort(
+				`Assertion failed: ${UTF8ToString(condition)}, at: ` +
+					[
+						filename ? UTF8ToString(filename) : "unknown filename",
+						line,
+						func ? UTF8ToString(func) : "unknown function",
+					],
+			);
+
+		var wasmTableMirror = [];
+
+		/** @type {WebAssembly.Table} */
+		var wasmTable;
+		var getWasmTableEntry = (funcPtr) => {
+			var func = wasmTableMirror[funcPtr];
+			if (!func) {
+				if (funcPtr >= wasmTableMirror.length)
+					wasmTableMirror.length = funcPtr + 1;
+				/** @suppress {checkTypes} */
+				wasmTableMirror[funcPtr] = func = wasmTable.get(funcPtr);
+			}
+			/** @suppress {checkTypes} */
+			assert(
+				wasmTable.get(funcPtr) == func,
+				"JavaScript-side Wasm function table mirror is out of date!",
+			);
+			return func;
+		};
+		var ___call_sighandler = (fp, sig) => getWasmTableEntry(fp)(sig);
+
+		var PATH = {
+			isAbs: (path) => path.charAt(0) === "/",
+			splitPath: (filename) => {
+				var splitPathRe =
+					/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
+				return splitPathRe.exec(filename).slice(1);
+			},
+			normalizeArray: (parts, allowAboveRoot) => {
+				// if the path tries to go above the root, `up` ends up > 0
+				var up = 0;
+				for (var i = parts.length - 1; i >= 0; i--) {
+					var last = parts[i];
+					if (last === ".") {
+						parts.splice(i, 1);
+					} else if (last === "..") {
+						parts.splice(i, 1);
+						up++;
+					} else if (up) {
+						parts.splice(i, 1);
+						up--;
+					}
+				}
+				// if the path is allowed to go above the root, restore leading ..s
+				if (allowAboveRoot) {
+					for (; up; up--) {
+						parts.unshift("..");
+					}
+				}
+				return parts;
+			},
+			normalize: (path) => {
+				var isAbsolute = PATH.isAbs(path),
+					trailingSlash = path.substr(-1) === "/";
+				// Normalize the path
+				path = PATH.normalizeArray(
+					path.split("/").filter((p) => !!p),
+					!isAbsolute,
+				).join("/");
+				if (!path && !isAbsolute) {
+					path = ".";
+				}
+				if (path && trailingSlash) {
+					path += "/";
+				}
+				return (isAbsolute ? "/" : "") + path;
+			},
+			dirname: (path) => {
+				var result = PATH.splitPath(path),
+					root = result[0],
+					dir = result[1];
+				if (!root && !dir) {
+					// No dirname whatsoever
+					return ".";
+				}
+				if (dir) {
+					// It has a dirname, strip trailing slash
+					dir = dir.substr(0, dir.length - 1);
+				}
+				return root + dir;
+			},
+			basename: (path) => {
+				// EMSCRIPTEN return '/'' for '/', not an empty string
+				if (path === "/") return "/";
+				path = PATH.normalize(path);
+				path = path.replace(/\/$/, "");
+				var lastSlash = path.lastIndexOf("/");
+				if (lastSlash === -1) return path;
+				return path.substr(lastSlash + 1);
+			},
+			join: (...paths) => PATH.normalize(paths.join("/")),
+			join2: (l, r) => PATH.normalize(l + "/" + r),
+		};
+
+		var initRandomFill = () => {
+			if (
+				typeof crypto == "object" &&
+				typeof crypto["getRandomValues"] == "function"
+			) {
+				// for modern web browsers
+				return (view) => crypto.getRandomValues(view);
+			}
+			// we couldn't find a proper implementation, as Math.random() is not suitable for /dev/random, see emscripten-core/emscripten/pull/7096
+			else
+				abort(
+					"no cryptographic support found for randomDevice. consider polyfilling it if you want to use something insecure like Math.random(), e.g. put this in a --pre-js: var crypto = { getRandomValues: (array) => { for (var i = 0; i < array.length; i++) array[i] = (Math.random()*256)|0 } };",
+				);
+		};
+		var randomFill = (view) => {
+			// Lazily init on the first invocation.
+			return (randomFill = initRandomFill())(view);
+		};
+
+		var PATH_FS = {
+			resolve: (...args) => {
+				var resolvedPath = "",
+					resolvedAbsolute = false;
+				for (var i = args.length - 1; i >= -1 && !resolvedAbsolute; i--) {
+					var path = i >= 0 ? args[i] : FS.cwd();
+					// Skip empty and invalid entries
+					if (typeof path != "string") {
+						throw new TypeError("Arguments to path.resolve must be strings");
+					} else if (!path) {
+						return ""; // an invalid portion invalidates the whole thing
+					}
+					resolvedPath = path + "/" + resolvedPath;
+					resolvedAbsolute = PATH.isAbs(path);
+				}
+				// At this point the path should be resolved to a full absolute path, but
+				// handle relative paths to be safe (might happen when process.cwd() fails)
+				resolvedPath = PATH.normalizeArray(
+					resolvedPath.split("/").filter((p) => !!p),
+					!resolvedAbsolute,
+				).join("/");
+				return (resolvedAbsolute ? "/" : "") + resolvedPath || ".";
+			},
+			relative: (from, to) => {
+				from = PATH_FS.resolve(from).substr(1);
+				to = PATH_FS.resolve(to).substr(1);
+				function trim(arr) {
+					var start = 0;
+					for (; start < arr.length; start++) {
+						if (arr[start] !== "") break;
+					}
+					var end = arr.length - 1;
+					for (; end >= 0; end--) {
+						if (arr[end] !== "") break;
+					}
+					if (start > end) return [];
+					return arr.slice(start, end - start + 1);
+				}
+				var fromParts = trim(from.split("/"));
+				var toParts = trim(to.split("/"));
+				var length = Math.min(fromParts.length, toParts.length);
+				var samePartsLength = length;
+				for (var i = 0; i < length; i++) {
+					if (fromParts[i] !== toParts[i]) {
+						samePartsLength = i;
+						break;
+					}
+				}
+				var outputParts = [];
+				for (var i = samePartsLength; i < fromParts.length; i++) {
+					outputParts.push("..");
+				}
+				outputParts = outputParts.concat(toParts.slice(samePartsLength));
+				return outputParts.join("/");
+			},
+		};
+
+		var FS_stdin_getChar_buffer = [];
+
+		var lengthBytesUTF8 = (str) => {
+			var len = 0;
+			for (var i = 0; i < str.length; ++i) {
+				// Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code
+				// unit, not a Unicode code point of the character! So decode
+				// UTF16->UTF32->UTF8.
+				// See http://unicode.org/faq/utf_bom.html#utf16-3
+				var c = str.charCodeAt(i); // possibly a lead surrogate
+				if (c <= 0x7f) {
+					len++;
+				} else if (c <= 0x7ff) {
+					len += 2;
+				} else if (c >= 0xd800 && c <= 0xdfff) {
+					len += 4;
+					++i;
+				} else {
+					len += 3;
+				}
+			}
+			return len;
+		};
+
+		var stringToUTF8Array = (str, heap, outIdx, maxBytesToWrite) => {
+			assert(
+				typeof str === "string",
+				`stringToUTF8Array expects a string (got ${typeof str})`,
+			);
+			// Parameter maxBytesToWrite is not optional. Negative values, 0, null,
+			// undefined and false each don't write out any bytes.
+			if (!(maxBytesToWrite > 0)) return 0;
+
+			var startIdx = outIdx;
+			var endIdx = outIdx + maxBytesToWrite - 1; // -1 for string null terminator.
+			for (var i = 0; i < str.length; ++i) {
+				// Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code
+				// unit, not a Unicode code point of the character! So decode
+				// UTF16->UTF32->UTF8.
+				// See http://unicode.org/faq/utf_bom.html#utf16-3
+				// For UTF8 byte structure, see http://en.wikipedia.org/wiki/UTF-8#Description
+				// and https://www.ietf.org/rfc/rfc2279.txt
+				// and https://tools.ietf.org/html/rfc3629
+				var u = str.charCodeAt(i); // possibly a lead surrogate
+				if (u >= 0xd800 && u <= 0xdfff) {
+					var u1 = str.charCodeAt(++i);
+					u = (0x10000 + ((u & 0x3ff) << 10)) | (u1 & 0x3ff);
+				}
+				if (u <= 0x7f) {
+					if (outIdx >= endIdx) break;
+					heap[outIdx++] = u;
+				} else if (u <= 0x7ff) {
+					if (outIdx + 1 >= endIdx) break;
+					heap[outIdx++] = 0xc0 | (u >> 6);
+					heap[outIdx++] = 0x80 | (u & 63);
+				} else if (u <= 0xffff) {
+					if (outIdx + 2 >= endIdx) break;
+					heap[outIdx++] = 0xe0 | (u >> 12);
+					heap[outIdx++] = 0x80 | ((u >> 6) & 63);
+					heap[outIdx++] = 0x80 | (u & 63);
+				} else {
+					if (outIdx + 3 >= endIdx) break;
+					if (u > 0x10ffff)
+						warnOnce(
+							"Invalid Unicode code point " +
+								ptrToString(u) +
+								" encountered when serializing a JS string to a UTF-8 string in wasm memory! (Valid unicode code points should be in range 0-0x10FFFF).",
+						);
+					heap[outIdx++] = 0xf0 | (u >> 18);
+					heap[outIdx++] = 0x80 | ((u >> 12) & 63);
+					heap[outIdx++] = 0x80 | ((u >> 6) & 63);
+					heap[outIdx++] = 0x80 | (u & 63);
+				}
+			}
+			// Null-terminate the pointer to the buffer.
+			heap[outIdx] = 0;
+			return outIdx - startIdx;
+		};
+		/** @type {function(string, boolean=, number=)} */
+		function intArrayFromString(stringy, dontAddNull, length) {
+			var len = length > 0 ? length : lengthBytesUTF8(stringy) + 1;
+			var u8array = new Array(len);
+			var numBytesWritten = stringToUTF8Array(
+				stringy,
+				u8array,
+				0,
+				u8array.length,
+			);
+			if (dontAddNull) u8array.length = numBytesWritten;
+			return u8array;
+		}
+		var FS_stdin_getChar = () => {
+			if (!FS_stdin_getChar_buffer.length) {
+				var result = null;
+				if (
+					typeof window != "undefined" &&
+					typeof window.prompt == "function"
+				) {
+					// Browser.
+					result = window.prompt("Input: "); // returns null on cancel
+					if (result !== null) {
+						result += "\n";
+					}
+				} else {
+				}
+				if (!result) {
+					return null;
+				}
+				FS_stdin_getChar_buffer = intArrayFromString(result, true);
+			}
+			return FS_stdin_getChar_buffer.shift();
+		};
+		var TTY = {
+			ttys: [],
+			init() {
+				// https://github.com/emscripten-core/emscripten/pull/1555
+				// if (ENVIRONMENT_IS_NODE) {
+				//   // currently, FS.init does not distinguish if process.stdin is a file or TTY
+				//   // device, it always assumes it's a TTY device. because of this, we're forcing
+				//   // process.stdin to UTF8 encoding to at least make stdin reading compatible
+				//   // with text files until FS.init can be refactored.
+				//   process.stdin.setEncoding('utf8');
+				// }
+			},
+			shutdown() {
+				// https://github.com/emscripten-core/emscripten/pull/1555
+				// if (ENVIRONMENT_IS_NODE) {
+				//   // inolen: any idea as to why node -e 'process.stdin.read()' wouldn't exit immediately (with process.stdin being a tty)?
+				//   // isaacs: because now it's reading from the stream, you've expressed interest in it, so that read() kicks off a _read() which creates a ReadReq operation
+				//   // inolen: I thought read() in that case was a synchronous operation that just grabbed some amount of buffered data if it exists?
+				//   // isaacs: it is. but it also triggers a _read() call, which calls readStart() on the handle
+				//   // isaacs: do process.stdin.pause() and i'd think it'd probably close the pending call
+				//   process.stdin.pause();
+				// }
+			},
+			register(dev, ops) {
+				TTY.ttys[dev] = { input: [], output: [], ops: ops };
+				FS.registerDevice(dev, TTY.stream_ops);
+			},
+			stream_ops: {
+				open(stream) {
+					var tty = TTY.ttys[stream.node.rdev];
+					if (!tty) {
+						throw new FS.ErrnoError(43);
+					}
+					stream.tty = tty;
+					stream.seekable = false;
+				},
+				close(stream) {
+					// flush any pending line data
+					stream.tty.ops.fsync(stream.tty);
+				},
+				fsync(stream) {
+					stream.tty.ops.fsync(stream.tty);
+				},
+				read(stream, buffer, offset, length, pos /* ignored */) {
+					if (!stream.tty || !stream.tty.ops.get_char) {
+						throw new FS.ErrnoError(60);
+					}
+					var bytesRead = 0;
+					for (var i = 0; i < length; i++) {
+						var result;
+						try {
+							result = stream.tty.ops.get_char(stream.tty);
+						} catch (e) {
+							throw new FS.ErrnoError(29);
+						}
+						if (result === undefined && bytesRead === 0) {
+							throw new FS.ErrnoError(6);
+						}
+						if (result === null || result === undefined) break;
+						bytesRead++;
+						buffer[offset + i] = result;
+					}
+					if (bytesRead) {
+						stream.node.atime = Date.now();
+					}
+					return bytesRead;
+				},
+				write(stream, buffer, offset, length, pos) {
+					if (!stream.tty || !stream.tty.ops.put_char) {
+						throw new FS.ErrnoError(60);
+					}
+					try {
+						for (var i = 0; i < length; i++) {
+							stream.tty.ops.put_char(stream.tty, buffer[offset + i]);
+						}
+					} catch (e) {
+						throw new FS.ErrnoError(29);
+					}
+					if (length) {
+						stream.node.mtime = stream.node.ctime = Date.now();
+					}
+					return i;
+				},
+			},
+			default_tty_ops: {
+				get_char(tty) {
+					return FS_stdin_getChar();
+				},
+				put_char(tty, val) {
+					if (val === null || val === 10) {
+						out(UTF8ArrayToString(tty.output));
+						tty.output = [];
+					} else {
+						if (val != 0) tty.output.push(val); // val == 0 would cut text output off in the middle.
+					}
+				},
+				fsync(tty) {
+					if (tty.output && tty.output.length > 0) {
+						out(UTF8ArrayToString(tty.output));
+						tty.output = [];
+					}
+				},
+				ioctl_tcgets(tty) {
+					// typical setting
+					return {
+						c_iflag: 25856,
+						c_oflag: 5,
+						c_cflag: 191,
+						c_lflag: 35387,
+						c_cc: [
+							0x03, 0x1c, 0x7f, 0x15, 0x04, 0x00, 0x01, 0x00, 0x11, 0x13, 0x1a,
+							0x00, 0x12, 0x0f, 0x17, 0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+							0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						],
+					};
+				},
+				ioctl_tcsets(tty, optional_actions, data) {
+					// currently just ignore
+					return 0;
+				},
+				ioctl_tiocgwinsz(tty) {
+					return [24, 80];
+				},
+			},
+			default_tty1_ops: {
+				put_char(tty, val) {
+					if (val === null || val === 10) {
+						err(UTF8ArrayToString(tty.output));
+						tty.output = [];
+					} else {
+						if (val != 0) tty.output.push(val);
+					}
+				},
+				fsync(tty) {
+					if (tty.output && tty.output.length > 0) {
+						err(UTF8ArrayToString(tty.output));
+						tty.output = [];
+					}
+				},
+			},
+		};
+
+		var zeroMemory = (address, size) => {
+			HEAPU8.fill(0, address, address + size);
+		};
+
+		var alignMemory = (size, alignment) => {
+			assert(alignment, "alignment argument is required");
+			return Math.ceil(size / alignment) * alignment;
+		};
+		var mmapAlloc = (size) => {
+			size = alignMemory(size, 65536);
+			var ptr = _emscripten_builtin_memalign(65536, size);
+			if (ptr) zeroMemory(ptr, size);
+			return ptr;
+		};
+		var MEMFS = {
+			ops_table: null,
+			mount(mount) {
+				return MEMFS.createNode(null, "/", 16895, 0);
+			},
+			createNode(parent, name, mode, dev) {
+				if (FS.isBlkdev(mode) || FS.isFIFO(mode)) {
+					// no supported
+					throw new FS.ErrnoError(63);
+				}
+				MEMFS.ops_table ||= {
+					dir: {
+						node: {
+							getattr: MEMFS.node_ops.getattr,
+							setattr: MEMFS.node_ops.setattr,
+							lookup: MEMFS.node_ops.lookup,
+							mknod: MEMFS.node_ops.mknod,
+							rename: MEMFS.node_ops.rename,
+							unlink: MEMFS.node_ops.unlink,
+							rmdir: MEMFS.node_ops.rmdir,
+							readdir: MEMFS.node_ops.readdir,
+							symlink: MEMFS.node_ops.symlink,
+						},
+						stream: {
+							llseek: MEMFS.stream_ops.llseek,
+						},
+					},
+					file: {
+						node: {
+							getattr: MEMFS.node_ops.getattr,
+							setattr: MEMFS.node_ops.setattr,
+						},
+						stream: {
+							llseek: MEMFS.stream_ops.llseek,
+							read: MEMFS.stream_ops.read,
+							write: MEMFS.stream_ops.write,
+							allocate: MEMFS.stream_ops.allocate,
+							mmap: MEMFS.stream_ops.mmap,
+							msync: MEMFS.stream_ops.msync,
+						},
+					},
+					link: {
+						node: {
+							getattr: MEMFS.node_ops.getattr,
+							setattr: MEMFS.node_ops.setattr,
+							readlink: MEMFS.node_ops.readlink,
+						},
+						stream: {},
+					},
+					chrdev: {
+						node: {
+							getattr: MEMFS.node_ops.getattr,
+							setattr: MEMFS.node_ops.setattr,
+						},
+						stream: FS.chrdev_stream_ops,
+					},
+				};
+				var node = FS.createNode(parent, name, mode, dev);
+				if (FS.isDir(node.mode)) {
+					node.node_ops = MEMFS.ops_table.dir.node;
+					node.stream_ops = MEMFS.ops_table.dir.stream;
+					node.contents = {};
+				} else if (FS.isFile(node.mode)) {
+					node.node_ops = MEMFS.ops_table.file.node;
+					node.stream_ops = MEMFS.ops_table.file.stream;
+					node.usedBytes = 0; // The actual number of bytes used in the typed array, as opposed to contents.length which gives the whole capacity.
+					// When the byte data of the file is populated, this will point to either a typed array, or a normal JS array. Typed arrays are preferred
+					// for performance, and used by default. However, typed arrays are not resizable like normal JS arrays are, so there is a small disk size
+					// penalty involved for appending file writes that continuously grow a file similar to std::vector capacity vs used -scheme.
+					node.contents = null;
+				} else if (FS.isLink(node.mode)) {
+					node.node_ops = MEMFS.ops_table.link.node;
+					node.stream_ops = MEMFS.ops_table.link.stream;
+				} else if (FS.isChrdev(node.mode)) {
+					node.node_ops = MEMFS.ops_table.chrdev.node;
+					node.stream_ops = MEMFS.ops_table.chrdev.stream;
+				}
+				node.atime = node.mtime = node.ctime = Date.now();
+				// add the new node to the parent
+				if (parent) {
+					parent.contents[name] = node;
+					parent.atime = parent.mtime = parent.ctime = node.atime;
+				}
+				return node;
+			},
+			getFileDataAsTypedArray(node) {
+				if (!node.contents) return new Uint8Array(0);
+				if (node.contents.subarray)
+					return node.contents.subarray(0, node.usedBytes); // Make sure to not return excess unused bytes.
+				return new Uint8Array(node.contents);
+			},
+			expandFileStorage(node, newCapacity) {
+				var prevCapacity = node.contents ? node.contents.length : 0;
+				if (prevCapacity >= newCapacity) return; // No need to expand, the storage was already large enough.
+				// Don't expand strictly to the given requested limit if it's only a very small increase, but instead geometrically grow capacity.
+				// For small filesizes (<1MB), perform size*2 geometric increase, but for large sizes, do a much more conservative size*1.125 increase to
+				// avoid overshooting the allocation cap by a very large margin.
+				var CAPACITY_DOUBLING_MAX = 1024 * 1024;
+				newCapacity = Math.max(
+					newCapacity,
+					(prevCapacity *
+						(prevCapacity < CAPACITY_DOUBLING_MAX ? 2.0 : 1.125)) >>>
+						0,
+				);
+				if (prevCapacity != 0) newCapacity = Math.max(newCapacity, 256); // At minimum allocate 256b for each file when expanding.
+				var oldContents = node.contents;
+				node.contents = new Uint8Array(newCapacity); // Allocate new storage.
+				if (node.usedBytes > 0)
+					node.contents.set(oldContents.subarray(0, node.usedBytes), 0); // Copy old data over to the new storage.
+			},
+			resizeFileStorage(node, newSize) {
+				if (node.usedBytes == newSize) return;
+				if (newSize == 0) {
+					node.contents = null; // Fully decommit when requesting a resize to zero.
+					node.usedBytes = 0;
+				} else {
+					var oldContents = node.contents;
+					node.contents = new Uint8Array(newSize); // Allocate new storage.
+					if (oldContents) {
+						node.contents.set(
+							oldContents.subarray(0, Math.min(newSize, node.usedBytes)),
+						); // Copy old data over to the new storage.
+					}
+					node.usedBytes = newSize;
+				}
+			},
+			node_ops: {
+				getattr(node) {
+					var attr = {};
+					// device numbers reuse inode numbers.
+					attr.dev = FS.isChrdev(node.mode) ? node.id : 1;
+					attr.ino = node.id;
+					attr.mode = node.mode;
+					attr.nlink = 1;
+					attr.uid = 0;
+					attr.gid = 0;
+					attr.rdev = node.rdev;
+					if (FS.isDir(node.mode)) {
+						attr.size = 4096;
+					} else if (FS.isFile(node.mode)) {
+						attr.size = node.usedBytes;
+					} else if (FS.isLink(node.mode)) {
+						attr.size = node.link.length;
+					} else {
+						attr.size = 0;
+					}
+					attr.atime = new Date(node.atime);
+					attr.mtime = new Date(node.mtime);
+					attr.ctime = new Date(node.ctime);
+					// NOTE: In our implementation, st_blocks = Math.ceil(st_size/st_blksize),
+					//       but this is not required by the standard.
+					attr.blksize = 4096;
+					attr.blocks = Math.ceil(attr.size / attr.blksize);
+					return attr;
+				},
+				setattr(node, attr) {
+					for (const key of ["mode", "atime", "mtime", "ctime"]) {
+						if (attr[key]) {
+							node[key] = attr[key];
+						}
+					}
+					if (attr.size !== undefined) {
+						MEMFS.resizeFileStorage(node, attr.size);
+					}
+				},
+				lookup(parent, name) {
+					throw new FS.ErrnoError(44);
+				},
+				mknod(parent, name, mode, dev) {
+					return MEMFS.createNode(parent, name, mode, dev);
+				},
+				rename(old_node, new_dir, new_name) {
+					var new_node;
+					try {
+						new_node = FS.lookupNode(new_dir, new_name);
+					} catch (e) {}
+					if (new_node) {
+						if (FS.isDir(old_node.mode)) {
+							// if we're overwriting a directory at new_name, make sure it's empty.
+							for (var i in new_node.contents) {
+								throw new FS.ErrnoError(55);
+							}
+						}
+						FS.hashRemoveNode(new_node);
+					}
+					// do the internal rewiring
+					delete old_node.parent.contents[old_node.name];
+					new_dir.contents[new_name] = old_node;
+					old_node.name = new_name;
+					new_dir.ctime =
+						new_dir.mtime =
+						old_node.parent.ctime =
+						old_node.parent.mtime =
+							Date.now();
+				},
+				unlink(parent, name) {
+					delete parent.contents[name];
+					parent.ctime = parent.mtime = Date.now();
+				},
+				rmdir(parent, name) {
+					var node = FS.lookupNode(parent, name);
+					for (var i in node.contents) {
+						throw new FS.ErrnoError(55);
+					}
+					delete parent.contents[name];
+					parent.ctime = parent.mtime = Date.now();
+				},
+				readdir(node) {
+					return [".", "..", ...Object.keys(node.contents)];
+				},
+				symlink(parent, newname, oldpath) {
+					var node = MEMFS.createNode(parent, newname, 0o777 | 40960, 0);
+					node.link = oldpath;
+					return node;
+				},
+				readlink(node) {
+					if (!FS.isLink(node.mode)) {
+						throw new FS.ErrnoError(28);
+					}
+					return node.link;
+				},
+			},
+			stream_ops: {
+				read(stream, buffer, offset, length, position) {
+					var contents = stream.node.contents;
+					if (position >= stream.node.usedBytes) return 0;
+					var size = Math.min(stream.node.usedBytes - position, length);
+					assert(size >= 0);
+					if (size > 8 && contents.subarray) {
+						// non-trivial, and typed array
+						buffer.set(contents.subarray(position, position + size), offset);
+					} else {
+						for (var i = 0; i < size; i++)
+							buffer[offset + i] = contents[position + i];
+					}
+					return size;
+				},
+				write(stream, buffer, offset, length, position, canOwn) {
+					// The data buffer should be a typed array view
+					assert(!(buffer instanceof ArrayBuffer));
+
+					if (!length) return 0;
+					var node = stream.node;
+					node.mtime = node.ctime = Date.now();
+
+					if (buffer.subarray && (!node.contents || node.contents.subarray)) {
+						// This write is from a typed array to a typed array?
+						if (canOwn) {
+							assert(
+								position === 0,
+								"canOwn must imply no weird position inside the file",
+							);
+							node.contents = buffer.subarray(offset, offset + length);
+							node.usedBytes = length;
+							return length;
+						} else if (node.usedBytes === 0 && position === 0) {
+							// If this is a simple first write to an empty file, do a fast set since we don't need to care about old data.
+							node.contents = buffer.slice(offset, offset + length);
+							node.usedBytes = length;
+							return length;
+						} else if (position + length <= node.usedBytes) {
+							// Writing to an already allocated and used subrange of the file?
+							node.contents.set(
+								buffer.subarray(offset, offset + length),
+								position,
+							);
+							return length;
+						}
+					}
+
+					// Appending to an existing file and we need to reallocate, or source data did not come as a typed array.
+					MEMFS.expandFileStorage(node, position + length);
+					if (node.contents.subarray && buffer.subarray) {
+						// Use typed array write which is available.
+						node.contents.set(
+							buffer.subarray(offset, offset + length),
+							position,
+						);
+					} else {
+						for (var i = 0; i < length; i++) {
+							node.contents[position + i] = buffer[offset + i]; // Or fall back to manual write if not.
+						}
+					}
+					node.usedBytes = Math.max(node.usedBytes, position + length);
+					return length;
+				},
+				llseek(stream, offset, whence) {
+					var position = offset;
+					if (whence === 1) {
+						position += stream.position;
+					} else if (whence === 2) {
+						if (FS.isFile(stream.node.mode)) {
+							position += stream.node.usedBytes;
+						}
+					}
+					if (position < 0) {
+						throw new FS.ErrnoError(28);
+					}
+					return position;
+				},
+				allocate(stream, offset, length) {
+					MEMFS.expandFileStorage(stream.node, offset + length);
+					stream.node.usedBytes = Math.max(
+						stream.node.usedBytes,
+						offset + length,
+					);
+				},
+				mmap(stream, length, position, prot, flags) {
+					if (!FS.isFile(stream.node.mode)) {
+						throw new FS.ErrnoError(43);
+					}
+					var ptr;
+					var allocated;
+					var contents = stream.node.contents;
+					// Only make a new copy when MAP_PRIVATE is specified.
+					if (!(flags & 2) && contents && contents.buffer === HEAP8.buffer) {
+						// We can't emulate MAP_SHARED when the file is not backed by the
+						// buffer we're mapping to (e.g. the HEAP buffer).
+						allocated = false;
+						ptr = contents.byteOffset;
+					} else {
+						allocated = true;
+						ptr = mmapAlloc(length);
+						if (!ptr) {
+							throw new FS.ErrnoError(48);
+						}
+						if (contents) {
+							// Try to avoid unnecessary slices.
+							if (position > 0 || position + length < contents.length) {
+								if (contents.subarray) {
+									contents = contents.subarray(position, position + length);
+								} else {
+									contents = Array.prototype.slice.call(
+										contents,
+										position,
+										position + length,
+									);
+								}
+							}
+							HEAP8.set(contents, ptr);
+						}
+					}
+					return { ptr, allocated };
+				},
+				msync(stream, buffer, offset, length, mmapFlags) {
+					MEMFS.stream_ops.write(stream, buffer, 0, length, offset, false);
+					// should we check if bytesWritten and length are the same?
+					return 0;
+				},
+			},
+		};
+
+		var asyncLoad = async (url) => {
+			var arrayBuffer = await readAsync(url);
+			assert(
+				arrayBuffer,
+				`Loading data file "${url}" failed (no arrayBuffer).`,
+			);
+			return new Uint8Array(arrayBuffer);
+		};
+
+		var FS_createDataFile = (
+			parent,
+			name,
+			fileData,
+			canRead,
+			canWrite,
+			canOwn,
+		) => {
+			FS.createDataFile(parent, name, fileData, canRead, canWrite, canOwn);
+		};
+
+		var preloadPlugins = Module["preloadPlugins"] || [];
+		var FS_handledByPreloadPlugin = (byteArray, fullname, finish, onerror) => {
+			// Ensure plugins are ready.
+			if (typeof Browser != "undefined") Browser.init();
+
+			var handled = false;
+			preloadPlugins.forEach((plugin) => {
+				if (handled) return;
+				if (plugin["canHandle"](fullname)) {
+					plugin["handle"](byteArray, fullname, finish, onerror);
+					handled = true;
+				}
+			});
+			return handled;
+		};
+		var FS_createPreloadedFile = (
+			parent,
+			name,
+			url,
+			canRead,
+			canWrite,
+			onload,
+			onerror,
+			dontCreateFile,
+			canOwn,
+			preFinish,
+		) => {
+			// TODO we should allow people to just pass in a complete filename instead
+			// of parent and name being that we just join them anyways
+			var fullname = name ? PATH_FS.resolve(PATH.join2(parent, name)) : parent;
+			var dep = getUniqueRunDependency(`cp ${fullname}`); // might have several active requests for the same fullname
+			function processData(byteArray) {
+				function finish(byteArray) {
+					preFinish?.();
+					if (!dontCreateFile) {
+						FS_createDataFile(
+							parent,
+							name,
+							byteArray,
+							canRead,
+							canWrite,
+							canOwn,
+						);
+					}
+					onload?.();
+					removeRunDependency(dep);
+				}
+				if (
+					FS_handledByPreloadPlugin(byteArray, fullname, finish, () => {
+						onerror?.();
+						removeRunDependency(dep);
+					})
+				) {
+					return;
+				}
+				finish(byteArray);
+			}
+			addRunDependency(dep);
+			if (typeof url == "string") {
+				asyncLoad(url).then(processData, onerror);
+			} else {
+				processData(url);
+			}
+		};
+
+		var FS_modeStringToFlags = (str) => {
+			var flagModes = {
+				r: 0,
+				"r+": 2,
+				w: 512 | 64 | 1,
+				"w+": 512 | 64 | 2,
+				a: 1024 | 64 | 1,
+				"a+": 1024 | 64 | 2,
+			};
+			var flags = flagModes[str];
+			if (typeof flags == "undefined") {
+				throw new Error(`Unknown file open mode: ${str}`);
+			}
+			return flags;
+		};
+
+		var FS_getMode = (canRead, canWrite) => {
+			var mode = 0;
+			if (canRead) mode |= 292 | 73;
+			if (canWrite) mode |= 146;
+			return mode;
+		};
+
+		var strError = (errno) => UTF8ToString(_strerror(errno));
+
+		var ERRNO_CODES = {
+			EPERM: 63,
+			ENOENT: 44,
+			ESRCH: 71,
+			EINTR: 27,
+			EIO: 29,
+			ENXIO: 60,
+			E2BIG: 1,
+			ENOEXEC: 45,
+			EBADF: 8,
+			ECHILD: 12,
+			EAGAIN: 6,
+			EWOULDBLOCK: 6,
+			ENOMEM: 48,
+			EACCES: 2,
+			EFAULT: 21,
+			ENOTBLK: 105,
+			EBUSY: 10,
+			EEXIST: 20,
+			EXDEV: 75,
+			ENODEV: 43,
+			ENOTDIR: 54,
+			EISDIR: 31,
+			EINVAL: 28,
+			ENFILE: 41,
+			EMFILE: 33,
+			ENOTTY: 59,
+			ETXTBSY: 74,
+			EFBIG: 22,
+			ENOSPC: 51,
+			ESPIPE: 70,
+			EROFS: 69,
+			EMLINK: 34,
+			EPIPE: 64,
+			EDOM: 18,
+			ERANGE: 68,
+			ENOMSG: 49,
+			EIDRM: 24,
+			ECHRNG: 106,
+			EL2NSYNC: 156,
+			EL3HLT: 107,
+			EL3RST: 108,
+			ELNRNG: 109,
+			EUNATCH: 110,
+			ENOCSI: 111,
+			EL2HLT: 112,
+			EDEADLK: 16,
+			ENOLCK: 46,
+			EBADE: 113,
+			EBADR: 114,
+			EXFULL: 115,
+			ENOANO: 104,
+			EBADRQC: 103,
+			EBADSLT: 102,
+			EDEADLOCK: 16,
+			EBFONT: 101,
+			ENOSTR: 100,
+			ENODATA: 116,
+			ETIME: 117,
+			ENOSR: 118,
+			ENONET: 119,
+			ENOPKG: 120,
+			EREMOTE: 121,
+			ENOLINK: 47,
+			EADV: 122,
+			ESRMNT: 123,
+			ECOMM: 124,
+			EPROTO: 65,
+			EMULTIHOP: 36,
+			EDOTDOT: 125,
+			EBADMSG: 9,
+			ENOTUNIQ: 126,
+			EBADFD: 127,
+			EREMCHG: 128,
+			ELIBACC: 129,
+			ELIBBAD: 130,
+			ELIBSCN: 131,
+			ELIBMAX: 132,
+			ELIBEXEC: 133,
+			ENOSYS: 52,
+			ENOTEMPTY: 55,
+			ENAMETOOLONG: 37,
+			ELOOP: 32,
+			EOPNOTSUPP: 138,
+			EPFNOSUPPORT: 139,
+			ECONNRESET: 15,
+			ENOBUFS: 42,
+			EAFNOSUPPORT: 5,
+			EPROTOTYPE: 67,
+			ENOTSOCK: 57,
+			ENOPROTOOPT: 50,
+			ESHUTDOWN: 140,
+			ECONNREFUSED: 14,
+			EADDRINUSE: 3,
+			ECONNABORTED: 13,
+			ENETUNREACH: 40,
+			ENETDOWN: 38,
+			ETIMEDOUT: 73,
+			EHOSTDOWN: 142,
+			EHOSTUNREACH: 23,
+			EINPROGRESS: 26,
+			EALREADY: 7,
+			EDESTADDRREQ: 17,
+			EMSGSIZE: 35,
+			EPROTONOSUPPORT: 66,
+			ESOCKTNOSUPPORT: 137,
+			EADDRNOTAVAIL: 4,
+			ENETRESET: 39,
+			EISCONN: 30,
+			ENOTCONN: 53,
+			ETOOMANYREFS: 141,
+			EUSERS: 136,
+			EDQUOT: 19,
+			ESTALE: 72,
+			ENOTSUP: 138,
+			ENOMEDIUM: 148,
+			EILSEQ: 25,
+			EOVERFLOW: 61,
+			ECANCELED: 11,
+			ENOTRECOVERABLE: 56,
+			EOWNERDEAD: 62,
+			ESTRPIPE: 135,
+		};
+		var FS = {
+			root: null,
+			mounts: [],
+			devices: {},
+			streams: [],
+			nextInode: 1,
+			nameTable: null,
+			currentPath: "/",
+			initialized: false,
+			ignorePermissions: true,
+			ErrnoError: class extends Error {
+				name = "ErrnoError";
+				// We set the `name` property to be able to identify `FS.ErrnoError`
+				// - the `name` is a standard ECMA-262 property of error objects. Kind of good to have it anyway.
+				// - when using PROXYFS, an error can come from an underlying FS
+				// as different FS objects have their own FS.ErrnoError each,
+				// the test `err instanceof FS.ErrnoError` won't detect an error coming from another filesystem, causing bugs.
+				// we'll use the reliable test `err.name == "ErrnoError"` instead
+				constructor(errno) {
+					super(runtimeInitialized ? strError(errno) : "");
+					this.errno = errno;
+					for (var key in ERRNO_CODES) {
+						if (ERRNO_CODES[key] === errno) {
+							this.code = key;
+							break;
+						}
+					}
+				}
+			},
+			filesystems: null,
+			syncFSRequests: 0,
+			readFiles: {},
+			FSStream: class {
+				shared = {};
+				get object() {
+					return this.node;
+				}
+				set object(val) {
+					this.node = val;
+				}
+				get isRead() {
+					return (this.flags & 2097155) !== 1;
+				}
+				get isWrite() {
+					return (this.flags & 2097155) !== 0;
+				}
+				get isAppend() {
+					return this.flags & 1024;
+				}
+				get flags() {
+					return this.shared.flags;
+				}
+				set flags(val) {
+					this.shared.flags = val;
+				}
+				get position() {
+					return this.shared.position;
+				}
+				set position(val) {
+					this.shared.position = val;
+				}
+			},
+			FSNode: class {
+				node_ops = {};
+				stream_ops = {};
+				readMode = 292 | 73;
+				writeMode = 146;
+				mounted = null;
+				constructor(parent, name, mode, rdev) {
+					if (!parent) {
+						parent = this; // root node sets parent to itself
+					}
+					this.parent = parent;
+					this.mount = parent.mount;
+					this.id = FS.nextInode++;
+					this.name = name;
+					this.mode = mode;
+					this.rdev = rdev;
+					this.atime = this.mtime = this.ctime = Date.now();
+				}
+				get read() {
+					return (this.mode & this.readMode) === this.readMode;
+				}
+				set read(val) {
+					val ? (this.mode |= this.readMode) : (this.mode &= ~this.readMode);
+				}
+				get write() {
+					return (this.mode & this.writeMode) === this.writeMode;
+				}
+				set write(val) {
+					val ? (this.mode |= this.writeMode) : (this.mode &= ~this.writeMode);
+				}
+				get isFolder() {
+					return FS.isDir(this.mode);
+				}
+				get isDevice() {
+					return FS.isChrdev(this.mode);
+				}
+			},
+			lookupPath(path, opts = {}) {
+				if (!path) return { path: "", node: null };
+				opts.follow_mount ??= true;
+
+				if (!PATH.isAbs(path)) {
+					path = FS.cwd() + "/" + path;
+				}
+
+				// limit max consecutive symlinks to 40 (SYMLOOP_MAX).
+				linkloop: for (var nlinks = 0; nlinks < 40; nlinks++) {
+					// split the absolute path
+					var parts = path.split("/").filter((p) => !!p && p !== ".");
+
+					// start at the root
+					var current = FS.root;
+					var current_path = "/";
+
+					for (var i = 0; i < parts.length; i++) {
+						var islast = i === parts.length - 1;
+						if (islast && opts.parent) {
+							// stop resolving
+							break;
+						}
+
+						if (parts[i] === "..") {
+							current_path = PATH.dirname(current_path);
+							current = current.parent;
+							continue;
+						}
+
+						current_path = PATH.join2(current_path, parts[i]);
+						try {
+							current = FS.lookupNode(current, parts[i]);
+						} catch (e) {
+							// if noent_okay is true, suppress a ENOENT in the last component
+							// and return an object with an undefined node. This is needed for
+							// resolving symlinks in the path when creating a file.
+							if (e?.errno === 44 && islast && opts.noent_okay) {
+								return { path: current_path };
+							}
+							throw e;
+						}
+
+						// jump to the mount's root node if this is a mountpoint
+						if (FS.isMountpoint(current) && (!islast || opts.follow_mount)) {
+							current = current.mounted.root;
+						}
+
+						// by default, lookupPath will not follow a symlink if it is the final path component.
+						// setting opts.follow = true will override this behavior.
+						if (FS.isLink(current.mode) && (!islast || opts.follow)) {
+							if (!current.node_ops.readlink) {
+								throw new FS.ErrnoError(52);
+							}
+							var link = current.node_ops.readlink(current);
+							if (!PATH.isAbs(link)) {
+								link = PATH.dirname(current_path) + "/" + link;
+							}
+							path = link + "/" + parts.slice(i + 1).join("/");
+							continue linkloop;
+						}
+					}
+					return { path: current_path, node: current };
+				}
+				throw new FS.ErrnoError(32);
+			},
+			getPath(node) {
+				var path;
+				while (true) {
+					if (FS.isRoot(node)) {
+						var mount = node.mount.mountpoint;
+						if (!path) return mount;
+						return mount[mount.length - 1] !== "/"
+							? `${mount}/${path}`
+							: mount + path;
+					}
+					path = path ? `${node.name}/${path}` : node.name;
+					node = node.parent;
+				}
+			},
+			hashName(parentid, name) {
+				var hash = 0;
+
+				for (var i = 0; i < name.length; i++) {
+					hash = ((hash << 5) - hash + name.charCodeAt(i)) | 0;
+				}
+				return ((parentid + hash) >>> 0) % FS.nameTable.length;
+			},
+			hashAddNode(node) {
+				var hash = FS.hashName(node.parent.id, node.name);
+				node.name_next = FS.nameTable[hash];
+				FS.nameTable[hash] = node;
+			},
+			hashRemoveNode(node) {
+				var hash = FS.hashName(node.parent.id, node.name);
+				if (FS.nameTable[hash] === node) {
+					FS.nameTable[hash] = node.name_next;
+				} else {
+					var current = FS.nameTable[hash];
+					while (current) {
+						if (current.name_next === node) {
+							current.name_next = node.name_next;
+							break;
+						}
+						current = current.name_next;
+					}
+				}
+			},
+			lookupNode(parent, name) {
+				var errCode = FS.mayLookup(parent);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				var hash = FS.hashName(parent.id, name);
+				for (var node = FS.nameTable[hash]; node; node = node.name_next) {
+					var nodeName = node.name;
+					if (node.parent.id === parent.id && nodeName === name) {
+						return node;
+					}
+				}
+				// if we failed to find it in the cache, call into the VFS
+				return FS.lookup(parent, name);
+			},
+			createNode(parent, name, mode, rdev) {
+				assert(typeof parent == "object");
+				var node = new FS.FSNode(parent, name, mode, rdev);
+
+				FS.hashAddNode(node);
+
+				return node;
+			},
+			destroyNode(node) {
+				FS.hashRemoveNode(node);
+			},
+			isRoot(node) {
+				return node === node.parent;
+			},
+			isMountpoint(node) {
+				return !!node.mounted;
+			},
+			isFile(mode) {
+				return (mode & 61440) === 32768;
+			},
+			isDir(mode) {
+				return (mode & 61440) === 16384;
+			},
+			isLink(mode) {
+				return (mode & 61440) === 40960;
+			},
+			isChrdev(mode) {
+				return (mode & 61440) === 8192;
+			},
+			isBlkdev(mode) {
+				return (mode & 61440) === 24576;
+			},
+			isFIFO(mode) {
+				return (mode & 61440) === 4096;
+			},
+			isSocket(mode) {
+				return (mode & 49152) === 49152;
+			},
+			flagsToPermissionString(flag) {
+				var perms = ["r", "w", "rw"][flag & 3];
+				if (flag & 512) {
+					perms += "w";
+				}
+				return perms;
+			},
+			nodePermissions(node, perms) {
+				if (FS.ignorePermissions) {
+					return 0;
+				}
+				// return 0 if any user, group or owner bits are set.
+				if (perms.includes("r") && !(node.mode & 292)) {
+					return 2;
+				} else if (perms.includes("w") && !(node.mode & 146)) {
+					return 2;
+				} else if (perms.includes("x") && !(node.mode & 73)) {
+					return 2;
+				}
+				return 0;
+			},
+			mayLookup(dir) {
+				if (!FS.isDir(dir.mode)) return 54;
+				var errCode = FS.nodePermissions(dir, "x");
+				if (errCode) return errCode;
+				if (!dir.node_ops.lookup) return 2;
+				return 0;
+			},
+			mayCreate(dir, name) {
+				if (!FS.isDir(dir.mode)) {
+					return 54;
+				}
+				try {
+					var node = FS.lookupNode(dir, name);
+					return 20;
+				} catch (e) {}
+				return FS.nodePermissions(dir, "wx");
+			},
+			mayDelete(dir, name, isdir) {
+				var node;
+				try {
+					node = FS.lookupNode(dir, name);
+				} catch (e) {
+					return e.errno;
+				}
+				var errCode = FS.nodePermissions(dir, "wx");
+				if (errCode) {
+					return errCode;
+				}
+				if (isdir) {
+					if (!FS.isDir(node.mode)) {
+						return 54;
+					}
+					if (FS.isRoot(node) || FS.getPath(node) === FS.cwd()) {
+						return 10;
+					}
+				} else {
+					if (FS.isDir(node.mode)) {
+						return 31;
+					}
+				}
+				return 0;
+			},
+			mayOpen(node, flags) {
+				if (!node) {
+					return 44;
+				}
+				if (FS.isLink(node.mode)) {
+					return 32;
+				} else if (FS.isDir(node.mode)) {
+					if (
+						FS.flagsToPermissionString(flags) !== "r" || // opening for write
+						flags & 512
+					) {
+						// TODO: check for O_SEARCH? (== search for dir only)
+						return 31;
+					}
+				}
+				return FS.nodePermissions(node, FS.flagsToPermissionString(flags));
+			},
+			MAX_OPEN_FDS: 4096,
+			nextfd() {
+				for (var fd = 0; fd <= FS.MAX_OPEN_FDS; fd++) {
+					if (!FS.streams[fd]) {
+						return fd;
+					}
+				}
+				throw new FS.ErrnoError(33);
+			},
+			getStreamChecked(fd) {
+				var stream = FS.getStream(fd);
+				if (!stream) {
+					throw new FS.ErrnoError(8);
+				}
+				return stream;
+			},
+			getStream: (fd) => FS.streams[fd],
+			createStream(stream, fd = -1) {
+				assert(fd >= -1);
+
+				// clone it, so we can return an instance of FSStream
+				stream = Object.assign(new FS.FSStream(), stream);
+				if (fd == -1) {
+					fd = FS.nextfd();
+				}
+				stream.fd = fd;
+				FS.streams[fd] = stream;
+				return stream;
+			},
+			closeStream(fd) {
+				FS.streams[fd] = null;
+			},
+			dupStream(origStream, fd = -1) {
+				var stream = FS.createStream(origStream, fd);
+				stream.stream_ops?.dup?.(stream);
+				return stream;
+			},
+			chrdev_stream_ops: {
+				open(stream) {
+					var device = FS.getDevice(stream.node.rdev);
+					// override node's stream ops with the device's
+					stream.stream_ops = device.stream_ops;
+					// forward the open call
+					stream.stream_ops.open?.(stream);
+				},
+				llseek() {
+					throw new FS.ErrnoError(70);
+				},
+			},
+			major: (dev) => dev >> 8,
+			minor: (dev) => dev & 0xff,
+			makedev: (ma, mi) => (ma << 8) | mi,
+			registerDevice(dev, ops) {
+				FS.devices[dev] = { stream_ops: ops };
+			},
+			getDevice: (dev) => FS.devices[dev],
+			getMounts(mount) {
+				var mounts = [];
+				var check = [mount];
+
+				while (check.length) {
+					var m = check.pop();
+
+					mounts.push(m);
+
+					check.push(...m.mounts);
+				}
+
+				return mounts;
+			},
+			syncfs(populate, callback) {
+				if (typeof populate == "function") {
+					callback = populate;
+					populate = false;
+				}
+
+				FS.syncFSRequests++;
+
+				if (FS.syncFSRequests > 1) {
+					err(
+						`warning: ${FS.syncFSRequests} FS.syncfs operations in flight at once, probably just doing extra work`,
+					);
+				}
+
+				var mounts = FS.getMounts(FS.root.mount);
+				var completed = 0;
+
+				function doCallback(errCode) {
+					assert(FS.syncFSRequests > 0);
+					FS.syncFSRequests--;
+					return callback(errCode);
+				}
+
+				function done(errCode) {
+					if (errCode) {
+						if (!done.errored) {
+							done.errored = true;
+							return doCallback(errCode);
+						}
+						return;
+					}
+					if (++completed >= mounts.length) {
+						doCallback(null);
+					}
+				}
+
+				// sync all mounts
+				mounts.forEach((mount) => {
+					if (!mount.type.syncfs) {
+						return done(null);
+					}
+					mount.type.syncfs(mount, populate, done);
+				});
+			},
+			mount(type, opts, mountpoint) {
+				if (typeof type == "string") {
+					// The filesystem was not included, and instead we have an error
+					// message stored in the variable.
+					throw type;
+				}
+				var root = mountpoint === "/";
+				var pseudo = !mountpoint;
+				var node;
+
+				if (root && FS.root) {
+					throw new FS.ErrnoError(10);
+				} else if (!root && !pseudo) {
+					var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
+
+					mountpoint = lookup.path; // use the absolute path
+					node = lookup.node;
+
+					if (FS.isMountpoint(node)) {
+						throw new FS.ErrnoError(10);
+					}
+
+					if (!FS.isDir(node.mode)) {
+						throw new FS.ErrnoError(54);
+					}
+				}
+
+				var mount = {
+					type,
+					opts,
+					mountpoint,
+					mounts: [],
+				};
+
+				// create a root node for the fs
+				var mountRoot = type.mount(mount);
+				mountRoot.mount = mount;
+				mount.root = mountRoot;
+
+				if (root) {
+					FS.root = mountRoot;
+				} else if (node) {
+					// set as a mountpoint
+					node.mounted = mount;
+
+					// add the new mount to the current mount's children
+					if (node.mount) {
+						node.mount.mounts.push(mount);
+					}
+				}
+
+				return mountRoot;
+			},
+			unmount(mountpoint) {
+				var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
+
+				if (!FS.isMountpoint(lookup.node)) {
+					throw new FS.ErrnoError(28);
+				}
+
+				// destroy the nodes for this mount, and all its child mounts
+				var node = lookup.node;
+				var mount = node.mounted;
+				var mounts = FS.getMounts(mount);
+
+				Object.keys(FS.nameTable).forEach((hash) => {
+					var current = FS.nameTable[hash];
+
+					while (current) {
+						var next = current.name_next;
+
+						if (mounts.includes(current.mount)) {
+							FS.destroyNode(current);
+						}
+
+						current = next;
+					}
+				});
+
+				// no longer a mountpoint
+				node.mounted = null;
+
+				// remove this mount from the child mounts
+				var idx = node.mount.mounts.indexOf(mount);
+				assert(idx !== -1);
+				node.mount.mounts.splice(idx, 1);
+			},
+			lookup(parent, name) {
+				return parent.node_ops.lookup(parent, name);
+			},
+			mknod(path, mode, dev) {
+				var lookup = FS.lookupPath(path, { parent: true });
+				var parent = lookup.node;
+				var name = PATH.basename(path);
+				if (!name || name === "." || name === "..") {
+					throw new FS.ErrnoError(28);
+				}
+				var errCode = FS.mayCreate(parent, name);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				if (!parent.node_ops.mknod) {
+					throw new FS.ErrnoError(63);
+				}
+				return parent.node_ops.mknod(parent, name, mode, dev);
+			},
+			statfs(path) {
+				// NOTE: None of the defaults here are true. We're just returning safe and
+				//       sane values.
+				var rtn = {
+					bsize: 4096,
+					frsize: 4096,
+					blocks: 1e6,
+					bfree: 5e5,
+					bavail: 5e5,
+					files: FS.nextInode,
+					ffree: FS.nextInode - 1,
+					fsid: 42,
+					flags: 2,
+					namelen: 255,
+				};
+
+				var parent = FS.lookupPath(path, { follow: true }).node;
+				if (parent?.node_ops.statfs) {
+					Object.assign(rtn, parent.node_ops.statfs(parent.mount.opts.root));
+				}
+				return rtn;
+			},
+			create(path, mode = 0o666) {
+				mode &= 4095;
+				mode |= 32768;
+				return FS.mknod(path, mode, 0);
+			},
+			mkdir(path, mode = 0o777) {
+				mode &= 511 | 512;
+				mode |= 16384;
+				return FS.mknod(path, mode, 0);
+			},
+			mkdirTree(path, mode) {
+				var dirs = path.split("/");
+				var d = "";
+				for (var i = 0; i < dirs.length; ++i) {
+					if (!dirs[i]) continue;
+					d += "/" + dirs[i];
+					try {
+						FS.mkdir(d, mode);
+					} catch (e) {
+						if (e.errno != 20) throw e;
+					}
+				}
+			},
+			mkdev(path, mode, dev) {
+				if (typeof dev == "undefined") {
+					dev = mode;
+					mode = 0o666;
+				}
+				mode |= 8192;
+				return FS.mknod(path, mode, dev);
+			},
+			symlink(oldpath, newpath) {
+				if (!PATH_FS.resolve(oldpath)) {
+					throw new FS.ErrnoError(44);
+				}
+				var lookup = FS.lookupPath(newpath, { parent: true });
+				var parent = lookup.node;
+				if (!parent) {
+					throw new FS.ErrnoError(44);
+				}
+				var newname = PATH.basename(newpath);
+				var errCode = FS.mayCreate(parent, newname);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				if (!parent.node_ops.symlink) {
+					throw new FS.ErrnoError(63);
+				}
+				return parent.node_ops.symlink(parent, newname, oldpath);
+			},
+			rename(old_path, new_path) {
+				var old_dirname = PATH.dirname(old_path);
+				var new_dirname = PATH.dirname(new_path);
+				var old_name = PATH.basename(old_path);
+				var new_name = PATH.basename(new_path);
+				// parents must exist
+				var lookup, old_dir, new_dir;
+
+				// let the errors from non existent directories percolate up
+				lookup = FS.lookupPath(old_path, { parent: true });
+				old_dir = lookup.node;
+				lookup = FS.lookupPath(new_path, { parent: true });
+				new_dir = lookup.node;
+
+				if (!old_dir || !new_dir) throw new FS.ErrnoError(44);
+				// need to be part of the same mount
+				if (old_dir.mount !== new_dir.mount) {
+					throw new FS.ErrnoError(75);
+				}
+				// source must exist
+				var old_node = FS.lookupNode(old_dir, old_name);
+				// old path should not be an ancestor of the new path
+				var relative = PATH_FS.relative(old_path, new_dirname);
+				if (relative.charAt(0) !== ".") {
+					throw new FS.ErrnoError(28);
+				}
+				// new path should not be an ancestor of the old path
+				relative = PATH_FS.relative(new_path, old_dirname);
+				if (relative.charAt(0) !== ".") {
+					throw new FS.ErrnoError(55);
+				}
+				// see if the new path already exists
+				var new_node;
+				try {
+					new_node = FS.lookupNode(new_dir, new_name);
+				} catch (e) {
+					// not fatal
+				}
+				// early out if nothing needs to change
+				if (old_node === new_node) {
+					return;
+				}
+				// we'll need to delete the old entry
+				var isdir = FS.isDir(old_node.mode);
+				var errCode = FS.mayDelete(old_dir, old_name, isdir);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				// need delete permissions if we'll be overwriting.
+				// need create permissions if new doesn't already exist.
+				errCode = new_node
+					? FS.mayDelete(new_dir, new_name, isdir)
+					: FS.mayCreate(new_dir, new_name);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				if (!old_dir.node_ops.rename) {
+					throw new FS.ErrnoError(63);
+				}
+				if (
+					FS.isMountpoint(old_node) ||
+					(new_node && FS.isMountpoint(new_node))
+				) {
+					throw new FS.ErrnoError(10);
+				}
+				// if we are going to change the parent, check write permissions
+				if (new_dir !== old_dir) {
+					errCode = FS.nodePermissions(old_dir, "w");
+					if (errCode) {
+						throw new FS.ErrnoError(errCode);
+					}
+				}
+				// remove the node from the lookup hash
+				FS.hashRemoveNode(old_node);
+				// do the underlying fs rename
+				try {
+					old_dir.node_ops.rename(old_node, new_dir, new_name);
+					// update old node (we do this here to avoid each backend
+					// needing to)
+					old_node.parent = new_dir;
+				} catch (e) {
+					throw e;
+				} finally {
+					// add the node back to the hash (in case node_ops.rename
+					// changed its name)
+					FS.hashAddNode(old_node);
+				}
+			},
+			rmdir(path) {
+				var lookup = FS.lookupPath(path, { parent: true });
+				var parent = lookup.node;
+				var name = PATH.basename(path);
+				var node = FS.lookupNode(parent, name);
+				var errCode = FS.mayDelete(parent, name, true);
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				if (!parent.node_ops.rmdir) {
+					throw new FS.ErrnoError(63);
+				}
+				if (FS.isMountpoint(node)) {
+					throw new FS.ErrnoError(10);
+				}
+				parent.node_ops.rmdir(parent, name);
+				FS.destroyNode(node);
+			},
+			readdir(path) {
+				var lookup = FS.lookupPath(path, { follow: true });
+				var node = lookup.node;
+				if (!node.node_ops.readdir) {
+					throw new FS.ErrnoError(54);
+				}
+				return node.node_ops.readdir(node);
+			},
+			unlink(path) {
+				var lookup = FS.lookupPath(path, { parent: true });
+				var parent = lookup.node;
+				if (!parent) {
+					throw new FS.ErrnoError(44);
+				}
+				var name = PATH.basename(path);
+				var node = FS.lookupNode(parent, name);
+				var errCode = FS.mayDelete(parent, name, false);
+				if (errCode) {
+					// According to POSIX, we should map EISDIR to EPERM, but
+					// we instead do what Linux does (and we must, as we use
+					// the musl linux libc).
+					throw new FS.ErrnoError(errCode);
+				}
+				if (!parent.node_ops.unlink) {
+					throw new FS.ErrnoError(63);
+				}
+				if (FS.isMountpoint(node)) {
+					throw new FS.ErrnoError(10);
+				}
+				parent.node_ops.unlink(parent, name);
+				FS.destroyNode(node);
+			},
+			readlink(path) {
+				var lookup = FS.lookupPath(path);
+				var link = lookup.node;
+				if (!link) {
+					throw new FS.ErrnoError(44);
+				}
+				if (!link.node_ops.readlink) {
+					throw new FS.ErrnoError(28);
+				}
+				return link.node_ops.readlink(link);
+			},
+			stat(path, dontFollow) {
+				var lookup = FS.lookupPath(path, { follow: !dontFollow });
+				var node = lookup.node;
+				if (!node) {
+					throw new FS.ErrnoError(44);
+				}
+				if (!node.node_ops.getattr) {
+					throw new FS.ErrnoError(63);
+				}
+				return node.node_ops.getattr(node);
+			},
+			lstat(path) {
+				return FS.stat(path, true);
+			},
+			chmod(path, mode, dontFollow) {
+				var node;
+				if (typeof path == "string") {
+					var lookup = FS.lookupPath(path, { follow: !dontFollow });
+					node = lookup.node;
+				} else {
+					node = path;
+				}
+				if (!node.node_ops.setattr) {
+					throw new FS.ErrnoError(63);
+				}
+				node.node_ops.setattr(node, {
+					mode: (mode & 4095) | (node.mode & ~4095),
+					ctime: Date.now(),
+				});
+			},
+			lchmod(path, mode) {
+				FS.chmod(path, mode, true);
+			},
+			fchmod(fd, mode) {
+				var stream = FS.getStreamChecked(fd);
+				FS.chmod(stream.node, mode);
+			},
+			chown(path, uid, gid, dontFollow) {
+				var node;
+				if (typeof path == "string") {
+					var lookup = FS.lookupPath(path, { follow: !dontFollow });
+					node = lookup.node;
+				} else {
+					node = path;
+				}
+				if (!node.node_ops.setattr) {
+					throw new FS.ErrnoError(63);
+				}
+				node.node_ops.setattr(node, {
+					timestamp: Date.now(),
+					// we ignore the uid / gid for now
+				});
+			},
+			lchown(path, uid, gid) {
+				FS.chown(path, uid, gid, true);
+			},
+			fchown(fd, uid, gid) {
+				var stream = FS.getStreamChecked(fd);
+				FS.chown(stream.node, uid, gid);
+			},
+			truncate(path, len) {
+				if (len < 0) {
+					throw new FS.ErrnoError(28);
+				}
+				var node;
+				if (typeof path == "string") {
+					var lookup = FS.lookupPath(path, { follow: true });
+					node = lookup.node;
+				} else {
+					node = path;
+				}
+				if (!node.node_ops.setattr) {
+					throw new FS.ErrnoError(63);
+				}
+				if (FS.isDir(node.mode)) {
+					throw new FS.ErrnoError(31);
+				}
+				if (!FS.isFile(node.mode)) {
+					throw new FS.ErrnoError(28);
+				}
+				var errCode = FS.nodePermissions(node, "w");
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				node.node_ops.setattr(node, {
+					size: len,
+					timestamp: Date.now(),
+				});
+			},
+			ftruncate(fd, len) {
+				var stream = FS.getStreamChecked(fd);
+				if ((stream.flags & 2097155) === 0) {
+					throw new FS.ErrnoError(28);
+				}
+				FS.truncate(stream.node, len);
+			},
+			utime(path, atime, mtime) {
+				var lookup = FS.lookupPath(path, { follow: true });
+				var node = lookup.node;
+				node.node_ops.setattr(node, {
+					atime: atime,
+					mtime: mtime,
+				});
+			},
+			open(path, flags, mode = 0o666) {
+				if (path === "") {
+					throw new FS.ErrnoError(44);
+				}
+				flags = typeof flags == "string" ? FS_modeStringToFlags(flags) : flags;
+				if (flags & 64) {
+					mode = (mode & 4095) | 32768;
+				} else {
+					mode = 0;
+				}
+				var node;
+				if (typeof path == "object") {
+					node = path;
+				} else {
+					// noent_okay makes it so that if the final component of the path
+					// doesn't exist, lookupPath returns `node: undefined`. `path` will be
+					// updated to point to the target of all symlinks.
+					var lookup = FS.lookupPath(path, {
+						follow: !(flags & 131072),
+						noent_okay: true,
+					});
+					node = lookup.node;
+					path = lookup.path;
+				}
+				// perhaps we need to create the node
+				var created = false;
+				if (flags & 64) {
+					if (node) {
+						// if O_CREAT and O_EXCL are set, error out if the node already exists
+						if (flags & 128) {
+							throw new FS.ErrnoError(20);
+						}
+					} else {
+						// node doesn't exist, try to create it
+						node = FS.mknod(path, mode, 0);
+						created = true;
+					}
+				}
+				if (!node) {
+					throw new FS.ErrnoError(44);
+				}
+				// can't truncate a device
+				if (FS.isChrdev(node.mode)) {
+					flags &= ~512;
+				}
+				// if asked only for a directory, then this must be one
+				if (flags & 65536 && !FS.isDir(node.mode)) {
+					throw new FS.ErrnoError(54);
+				}
+				// check permissions, if this is not a file we just created now (it is ok to
+				// create and write to a file with read-only permissions; it is read-only
+				// for later use)
+				if (!created) {
+					var errCode = FS.mayOpen(node, flags);
+					if (errCode) {
+						throw new FS.ErrnoError(errCode);
+					}
+				}
+				// do truncation if necessary
+				if (flags & 512 && !created) {
+					FS.truncate(node, 0);
+				}
+				// we've already handled these, don't pass down to the underlying vfs
+				flags &= ~(128 | 512 | 131072);
+
+				// register the stream with the filesystem
+				var stream = FS.createStream({
+					node,
+					path: FS.getPath(node), // we want the absolute path to the node
+					flags,
+					seekable: true,
+					position: 0,
+					stream_ops: node.stream_ops,
+					// used by the file family libc calls (fopen, fwrite, ferror, etc.)
+					ungotten: [],
+					error: false,
+				});
+				// call the new stream's open function
+				if (stream.stream_ops.open) {
+					stream.stream_ops.open(stream);
+				}
+				if (Module["logReadFiles"] && !(flags & 1)) {
+					if (!(path in FS.readFiles)) {
+						FS.readFiles[path] = 1;
+					}
+				}
+				return stream;
+			},
+			close(stream) {
+				if (FS.isClosed(stream)) {
+					throw new FS.ErrnoError(8);
+				}
+				if (stream.getdents) stream.getdents = null; // free readdir state
+				try {
+					if (stream.stream_ops.close) {
+						stream.stream_ops.close(stream);
+					}
+				} catch (e) {
+					throw e;
+				} finally {
+					FS.closeStream(stream.fd);
+				}
+				stream.fd = null;
+			},
+			isClosed(stream) {
+				return stream.fd === null;
+			},
+			llseek(stream, offset, whence) {
+				if (FS.isClosed(stream)) {
+					throw new FS.ErrnoError(8);
+				}
+				if (!stream.seekable || !stream.stream_ops.llseek) {
+					throw new FS.ErrnoError(70);
+				}
+				if (whence != 0 && whence != 1 && whence != 2) {
+					throw new FS.ErrnoError(28);
+				}
+				stream.position = stream.stream_ops.llseek(stream, offset, whence);
+				stream.ungotten = [];
+				return stream.position;
+			},
+			read(stream, buffer, offset, length, position) {
+				assert(offset >= 0);
+				if (length < 0 || position < 0) {
+					throw new FS.ErrnoError(28);
+				}
+				if (FS.isClosed(stream)) {
+					throw new FS.ErrnoError(8);
+				}
+				if ((stream.flags & 2097155) === 1) {
+					throw new FS.ErrnoError(8);
+				}
+				if (FS.isDir(stream.node.mode)) {
+					throw new FS.ErrnoError(31);
+				}
+				if (!stream.stream_ops.read) {
+					throw new FS.ErrnoError(28);
+				}
+				var seeking = typeof position != "undefined";
+				if (!seeking) {
+					position = stream.position;
+				} else if (!stream.seekable) {
+					throw new FS.ErrnoError(70);
+				}
+				var bytesRead = stream.stream_ops.read(
+					stream,
+					buffer,
+					offset,
+					length,
+					position,
+				);
+				if (!seeking) stream.position += bytesRead;
+				return bytesRead;
+			},
+			write(stream, buffer, offset, length, position, canOwn) {
+				assert(offset >= 0);
+				if (length < 0 || position < 0) {
+					throw new FS.ErrnoError(28);
+				}
+				if (FS.isClosed(stream)) {
+					throw new FS.ErrnoError(8);
+				}
+				if ((stream.flags & 2097155) === 0) {
+					throw new FS.ErrnoError(8);
+				}
+				if (FS.isDir(stream.node.mode)) {
+					throw new FS.ErrnoError(31);
+				}
+				if (!stream.stream_ops.write) {
+					throw new FS.ErrnoError(28);
+				}
+				if (stream.seekable && stream.flags & 1024) {
+					// seek to the end before writing in append mode
+					FS.llseek(stream, 0, 2);
+				}
+				var seeking = typeof position != "undefined";
+				if (!seeking) {
+					position = stream.position;
+				} else if (!stream.seekable) {
+					throw new FS.ErrnoError(70);
+				}
+				var bytesWritten = stream.stream_ops.write(
+					stream,
+					buffer,
+					offset,
+					length,
+					position,
+					canOwn,
+				);
+				if (!seeking) stream.position += bytesWritten;
+				return bytesWritten;
+			},
+			allocate(stream, offset, length) {
+				if (FS.isClosed(stream)) {
+					throw new FS.ErrnoError(8);
+				}
+				if (offset < 0 || length <= 0) {
+					throw new FS.ErrnoError(28);
+				}
+				if ((stream.flags & 2097155) === 0) {
+					throw new FS.ErrnoError(8);
+				}
+				if (!FS.isFile(stream.node.mode) && !FS.isDir(stream.node.mode)) {
+					throw new FS.ErrnoError(43);
+				}
+				if (!stream.stream_ops.allocate) {
+					throw new FS.ErrnoError(138);
+				}
+				stream.stream_ops.allocate(stream, offset, length);
+			},
+			mmap(stream, length, position, prot, flags) {
+				// User requests writing to file (prot & PROT_WRITE != 0).
+				// Checking if we have permissions to write to the file unless
+				// MAP_PRIVATE flag is set. According to POSIX spec it is possible
+				// to write to file opened in read-only mode with MAP_PRIVATE flag,
+				// as all modifications will be visible only in the memory of
+				// the current process.
+				if (
+					(prot & 2) !== 0 &&
+					(flags & 2) === 0 &&
+					(stream.flags & 2097155) !== 2
+				) {
+					throw new FS.ErrnoError(2);
+				}
+				if ((stream.flags & 2097155) === 1) {
+					throw new FS.ErrnoError(2);
+				}
+				if (!stream.stream_ops.mmap) {
+					throw new FS.ErrnoError(43);
+				}
+				if (!length) {
+					throw new FS.ErrnoError(28);
+				}
+				return stream.stream_ops.mmap(stream, length, position, prot, flags);
+			},
+			msync(stream, buffer, offset, length, mmapFlags) {
+				assert(offset >= 0);
+				if (!stream.stream_ops.msync) {
+					return 0;
+				}
+				return stream.stream_ops.msync(
+					stream,
+					buffer,
+					offset,
+					length,
+					mmapFlags,
+				);
+			},
+			ioctl(stream, cmd, arg) {
+				if (!stream.stream_ops.ioctl) {
+					throw new FS.ErrnoError(59);
+				}
+				return stream.stream_ops.ioctl(stream, cmd, arg);
+			},
+			readFile(path, opts = {}) {
+				opts.flags = opts.flags || 0;
+				opts.encoding = opts.encoding || "binary";
+				if (opts.encoding !== "utf8" && opts.encoding !== "binary") {
+					throw new Error(`Invalid encoding type "${opts.encoding}"`);
+				}
+				var ret;
+				var stream = FS.open(path, opts.flags);
+				var stat = FS.stat(path);
+				var length = stat.size;
+				var buf = new Uint8Array(length);
+				FS.read(stream, buf, 0, length, 0);
+				if (opts.encoding === "utf8") {
+					ret = UTF8ArrayToString(buf);
+				} else if (opts.encoding === "binary") {
+					ret = buf;
+				}
+				FS.close(stream);
+				return ret;
+			},
+			writeFile(path, data, opts = {}) {
+				opts.flags = opts.flags || 577;
+				var stream = FS.open(path, opts.flags, opts.mode);
+				if (typeof data == "string") {
+					var buf = new Uint8Array(lengthBytesUTF8(data) + 1);
+					var actualNumBytes = stringToUTF8Array(data, buf, 0, buf.length);
+					FS.write(stream, buf, 0, actualNumBytes, undefined, opts.canOwn);
+				} else if (ArrayBuffer.isView(data)) {
+					FS.write(stream, data, 0, data.byteLength, undefined, opts.canOwn);
+				} else {
+					throw new Error("Unsupported data type");
+				}
+				FS.close(stream);
+			},
+			cwd: () => FS.currentPath,
+			chdir(path) {
+				var lookup = FS.lookupPath(path, { follow: true });
+				if (lookup.node === null) {
+					throw new FS.ErrnoError(44);
+				}
+				if (!FS.isDir(lookup.node.mode)) {
+					throw new FS.ErrnoError(54);
+				}
+				var errCode = FS.nodePermissions(lookup.node, "x");
+				if (errCode) {
+					throw new FS.ErrnoError(errCode);
+				}
+				FS.currentPath = lookup.path;
+			},
+			createDefaultDirectories() {
+				FS.mkdir("/tmp");
+				FS.mkdir("/home");
+				FS.mkdir("/home/web_user");
+			},
+			createDefaultDevices() {
+				// create /dev
+				FS.mkdir("/dev");
+				// setup /dev/null
+				FS.registerDevice(FS.makedev(1, 3), {
+					read: () => 0,
+					write: (stream, buffer, offset, length, pos) => length,
+					llseek: () => 0,
+				});
+				FS.mkdev("/dev/null", FS.makedev(1, 3));
+				// setup /dev/tty and /dev/tty1
+				// stderr needs to print output using err() rather than out()
+				// so we register a second tty just for it.
+				TTY.register(FS.makedev(5, 0), TTY.default_tty_ops);
+				TTY.register(FS.makedev(6, 0), TTY.default_tty1_ops);
+				FS.mkdev("/dev/tty", FS.makedev(5, 0));
+				FS.mkdev("/dev/tty1", FS.makedev(6, 0));
+				// setup /dev/[u]random
+				// use a buffer to avoid overhead of individual crypto calls per byte
+				var randomBuffer = new Uint8Array(1024),
+					randomLeft = 0;
+				var randomByte = () => {
+					if (randomLeft === 0) {
+						randomLeft = randomFill(randomBuffer).byteLength;
+					}
+					return randomBuffer[--randomLeft];
+				};
+				FS.createDevice("/dev", "random", randomByte);
+				FS.createDevice("/dev", "urandom", randomByte);
+				// we're not going to emulate the actual shm device,
+				// just create the tmp dirs that reside in it commonly
+				FS.mkdir("/dev/shm");
+				FS.mkdir("/dev/shm/tmp");
+			},
+			createSpecialDirectories() {
+				// create /proc/self/fd which allows /proc/self/fd/6 => readlink gives the
+				// name of the stream for fd 6 (see test_unistd_ttyname)
+				FS.mkdir("/proc");
+				var proc_self = FS.mkdir("/proc/self");
+				FS.mkdir("/proc/self/fd");
+				FS.mount(
+					{
+						mount() {
+							var node = FS.createNode(proc_self, "fd", 16895, 73);
+							node.stream_ops = {
+								llseek: MEMFS.stream_ops.llseek,
+							};
+							node.node_ops = {
+								lookup(parent, name) {
+									var fd = +name;
+									var stream = FS.getStreamChecked(fd);
+									var ret = {
+										parent: null,
+										mount: { mountpoint: "fake" },
+										node_ops: { readlink: () => stream.path },
+										id: fd + 1,
+									};
+									ret.parent = ret; // make it look like a simple root node
+									return ret;
+								},
+								readdir() {
+									return Array.from(FS.streams.entries())
+										.filter(([k, v]) => v)
+										.map(([k, v]) => k.toString());
+								},
+							};
+							return node;
+						},
+					},
+					{},
+					"/proc/self/fd",
+				);
+			},
+			createStandardStreams(input, output, error) {
+				// TODO deprecate the old functionality of a single
+				// input / output callback and that utilizes FS.createDevice
+				// and instead require a unique set of stream ops
+
+				// by default, we symlink the standard streams to the
+				// default tty devices. however, if the standard streams
+				// have been overwritten we create a unique device for
+				// them instead.
+				if (input) {
+					FS.createDevice("/dev", "stdin", input);
+				} else {
+					FS.symlink("/dev/tty", "/dev/stdin");
+				}
+				if (output) {
+					FS.createDevice("/dev", "stdout", null, output);
+				} else {
+					FS.symlink("/dev/tty", "/dev/stdout");
+				}
+				if (error) {
+					FS.createDevice("/dev", "stderr", null, error);
+				} else {
+					FS.symlink("/dev/tty1", "/dev/stderr");
+				}
+
+				// open default streams for the stdin, stdout and stderr devices
+				var stdin = FS.open("/dev/stdin", 0);
+				var stdout = FS.open("/dev/stdout", 1);
+				var stderr = FS.open("/dev/stderr", 1);
+				assert(stdin.fd === 0, `invalid handle for stdin (${stdin.fd})`);
+				assert(stdout.fd === 1, `invalid handle for stdout (${stdout.fd})`);
+				assert(stderr.fd === 2, `invalid handle for stderr (${stderr.fd})`);
+			},
+			staticInit() {
+				FS.nameTable = new Array(4096);
+
+				FS.mount(MEMFS, {}, "/");
+
+				FS.createDefaultDirectories();
+				FS.createDefaultDevices();
+				FS.createSpecialDirectories();
+
+				FS.filesystems = {
+					MEMFS: MEMFS,
+				};
+			},
+			init(input, output, error) {
+				assert(
+					!FS.initialized,
+					"FS.init was previously called. If you want to initialize later with custom parameters, remove any earlier calls (note that one is automatically added to the generated code)",
+				);
+				FS.initialized = true;
+
+				// Allow Module.stdin etc. to provide defaults, if none explicitly passed to us here
+				input ??= Module["stdin"];
+				output ??= Module["stdout"];
+				error ??= Module["stderr"];
+
+				FS.createStandardStreams(input, output, error);
+			},
+			quit() {
+				FS.initialized = false;
+				// force-flush all streams, so we get musl std streams printed out
+				_fflush(0);
+				// close all of our streams
+				for (var i = 0; i < FS.streams.length; i++) {
+					var stream = FS.streams[i];
+					if (!stream) {
+						continue;
+					}
+					FS.close(stream);
+				}
+			},
+			findObject(path, dontResolveLastLink) {
+				var ret = FS.analyzePath(path, dontResolveLastLink);
+				if (!ret.exists) {
+					return null;
+				}
+				return ret.object;
+			},
+			analyzePath(path, dontResolveLastLink) {
+				// operate from within the context of the symlink's target
+				try {
+					var lookup = FS.lookupPath(path, { follow: !dontResolveLastLink });
+					path = lookup.path;
+				} catch (e) {}
+				var ret = {
+					isRoot: false,
+					exists: false,
+					error: 0,
+					name: null,
+					path: null,
+					object: null,
+					parentExists: false,
+					parentPath: null,
+					parentObject: null,
+				};
+				try {
+					var lookup = FS.lookupPath(path, { parent: true });
+					ret.parentExists = true;
+					ret.parentPath = lookup.path;
+					ret.parentObject = lookup.node;
+					ret.name = PATH.basename(path);
+					lookup = FS.lookupPath(path, { follow: !dontResolveLastLink });
+					ret.exists = true;
+					ret.path = lookup.path;
+					ret.object = lookup.node;
+					ret.name = lookup.node.name;
+					ret.isRoot = lookup.path === "/";
+				} catch (e) {
+					ret.error = e.errno;
+				}
+				return ret;
+			},
+			createPath(parent, path, canRead, canWrite) {
+				parent = typeof parent == "string" ? parent : FS.getPath(parent);
+				var parts = path.split("/").reverse();
+				while (parts.length) {
+					var part = parts.pop();
+					if (!part) continue;
+					var current = PATH.join2(parent, part);
+					try {
+						FS.mkdir(current);
+					} catch (e) {
+						// ignore EEXIST
+					}
+					parent = current;
+				}
+				return current;
+			},
+			createFile(parent, name, properties, canRead, canWrite) {
+				var path = PATH.join2(
+					typeof parent == "string" ? parent : FS.getPath(parent),
+					name,
+				);
+				var mode = FS_getMode(canRead, canWrite);
+				return FS.create(path, mode);
+			},
+			createDataFile(parent, name, data, canRead, canWrite, canOwn) {
+				var path = name;
+				if (parent) {
+					parent = typeof parent == "string" ? parent : FS.getPath(parent);
+					path = name ? PATH.join2(parent, name) : parent;
+				}
+				var mode = FS_getMode(canRead, canWrite);
+				var node = FS.create(path, mode);
+				if (data) {
+					if (typeof data == "string") {
+						var arr = new Array(data.length);
+						for (var i = 0, len = data.length; i < len; ++i)
+							arr[i] = data.charCodeAt(i);
+						data = arr;
+					}
+					// make sure we can write to the file
+					FS.chmod(node, mode | 146);
+					var stream = FS.open(node, 577);
+					FS.write(stream, data, 0, data.length, 0, canOwn);
+					FS.close(stream);
+					FS.chmod(node, mode);
+				}
+			},
+			createDevice(parent, name, input, output) {
+				var path = PATH.join2(
+					typeof parent == "string" ? parent : FS.getPath(parent),
+					name,
+				);
+				var mode = FS_getMode(!!input, !!output);
+				FS.createDevice.major ??= 64;
+				var dev = FS.makedev(FS.createDevice.major++, 0);
+				// Create a fake device that a set of stream ops to emulate
+				// the old behavior.
+				FS.registerDevice(dev, {
+					open(stream) {
+						stream.seekable = false;
+					},
+					close(stream) {
+						// flush any pending line data
+						if (output?.buffer?.length) {
+							output(10);
+						}
+					},
+					read(stream, buffer, offset, length, pos /* ignored */) {
+						var bytesRead = 0;
+						for (var i = 0; i < length; i++) {
+							var result;
+							try {
+								result = input();
+							} catch (e) {
+								throw new FS.ErrnoError(29);
+							}
+							if (result === undefined && bytesRead === 0) {
+								throw new FS.ErrnoError(6);
+							}
+							if (result === null || result === undefined) break;
+							bytesRead++;
+							buffer[offset + i] = result;
+						}
+						if (bytesRead) {
+							stream.node.atime = Date.now();
+						}
+						return bytesRead;
+					},
+					write(stream, buffer, offset, length, pos) {
+						for (var i = 0; i < length; i++) {
+							try {
+								output(buffer[offset + i]);
+							} catch (e) {
+								throw new FS.ErrnoError(29);
+							}
+						}
+						if (length) {
+							stream.node.mtime = stream.node.ctime = Date.now();
+						}
+						return i;
+					},
+				});
+				return FS.mkdev(path, mode, dev);
+			},
+			forceLoadFile(obj) {
+				if (obj.isDevice || obj.isFolder || obj.link || obj.contents)
+					return true;
+				if (typeof XMLHttpRequest != "undefined") {
+					throw new Error(
+						"Lazy loading should have been performed (contents set) in createLazyFile, but it was not. Lazy loading only works in web workers. Use --embed-file or --preload-file in emcc on the main thread.",
+					);
+				} else {
+					// Command-line.
+					try {
+						obj.contents = readBinary(obj.url);
+						obj.usedBytes = obj.contents.length;
+					} catch (e) {
+						throw new FS.ErrnoError(29);
+					}
+				}
+			},
+			createLazyFile(parent, name, url, canRead, canWrite) {
+				// Lazy chunked Uint8Array (implements get and length from Uint8Array).
+				// Actual getting is abstracted away for eventual reuse.
+				class LazyUint8Array {
+					lengthKnown = false;
+					chunks = []; // Loaded chunks. Index is the chunk number
+					get(idx) {
+						if (idx > this.length - 1 || idx < 0) {
+							return undefined;
+						}
+						var chunkOffset = idx % this.chunkSize;
+						var chunkNum = (idx / this.chunkSize) | 0;
+						return this.getter(chunkNum)[chunkOffset];
+					}
+					setDataGetter(getter) {
+						this.getter = getter;
+					}
+					cacheLength() {
+						// Find length
+						var xhr = new XMLHttpRequest();
+						xhr.open("HEAD", url, false);
+						xhr.send(null);
+						if (
+							!((xhr.status >= 200 && xhr.status < 300) || xhr.status === 304)
+						)
+							throw new Error(
+								"Couldn't load " + url + ". Status: " + xhr.status,
+							);
+						var datalength = Number(xhr.getResponseHeader("Content-length"));
+						var header;
+						var hasByteServing =
+							(header = xhr.getResponseHeader("Accept-Ranges")) &&
+							header === "bytes";
+						var usesGzip =
+							(header = xhr.getResponseHeader("Content-Encoding")) &&
+							header === "gzip";
+
+						var chunkSize = 1024 * 1024; // Chunk size in bytes
+
+						if (!hasByteServing) chunkSize = datalength;
+
+						// Function to get a range from the remote URL.
+						var doXHR = (from, to) => {
+							if (from > to)
+								throw new Error(
+									"invalid range (" +
+										from +
+										", " +
+										to +
+										") or no bytes requested!",
+								);
+							if (to > datalength - 1)
+								throw new Error(
+									"only " + datalength + " bytes available! programmer error!",
+								);
+
+							// TODO: Use mozResponseArrayBuffer, responseStream, etc. if available.
+							var xhr = new XMLHttpRequest();
+							xhr.open("GET", url, false);
+							if (datalength !== chunkSize)
+								xhr.setRequestHeader("Range", "bytes=" + from + "-" + to);
+
+							// Some hints to the browser that we want binary data.
+							xhr.responseType = "arraybuffer";
+							if (xhr.overrideMimeType) {
+								xhr.overrideMimeType("text/plain; charset=x-user-defined");
+							}
+
+							xhr.send(null);
+							if (
+								!((xhr.status >= 200 && xhr.status < 300) || xhr.status === 304)
+							)
+								throw new Error(
+									"Couldn't load " + url + ". Status: " + xhr.status,
+								);
+							if (xhr.response !== undefined) {
+								return new Uint8Array(
+									/** @type{Array<number>} */ (xhr.response || []),
+								);
+							}
+							return intArrayFromString(xhr.responseText || "", true);
+						};
+						var lazyArray = this;
+						lazyArray.setDataGetter((chunkNum) => {
+							var start = chunkNum * chunkSize;
+							var end = (chunkNum + 1) * chunkSize - 1; // including this byte
+							end = Math.min(end, datalength - 1); // if datalength-1 is selected, this is the last block
+							if (typeof lazyArray.chunks[chunkNum] == "undefined") {
+								lazyArray.chunks[chunkNum] = doXHR(start, end);
+							}
+							if (typeof lazyArray.chunks[chunkNum] == "undefined")
+								throw new Error("doXHR failed!");
+							return lazyArray.chunks[chunkNum];
+						});
+
+						if (usesGzip || !datalength) {
+							// if the server uses gzip or doesn't supply the length, we have to download the whole file to get the (uncompressed) length
+							chunkSize = datalength = 1; // this will force getter(0)/doXHR do download the whole file
+							datalength = this.getter(0).length;
+							chunkSize = datalength;
+							out(
+								"LazyFiles on gzip forces download of the whole file when length is accessed",
+							);
+						}
+
+						this._length = datalength;
+						this._chunkSize = chunkSize;
+						this.lengthKnown = true;
+					}
+					get length() {
+						if (!this.lengthKnown) {
+							this.cacheLength();
+						}
+						return this._length;
+					}
+					get chunkSize() {
+						if (!this.lengthKnown) {
+							this.cacheLength();
+						}
+						return this._chunkSize;
+					}
+				}
+
+				if (typeof XMLHttpRequest != "undefined") {
+					if (!ENVIRONMENT_IS_WORKER)
+						throw "Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc";
+					var lazyArray = new LazyUint8Array();
+					var properties = { isDevice: false, contents: lazyArray };
+				} else {
+					var properties = { isDevice: false, url: url };
+				}
+
+				var node = FS.createFile(parent, name, properties, canRead, canWrite);
+				// This is a total hack, but I want to get this lazy file code out of the
+				// core of MEMFS. If we want to keep this lazy file concept I feel it should
+				// be its own thin LAZYFS proxying calls to MEMFS.
+				if (properties.contents) {
+					node.contents = properties.contents;
+				} else if (properties.url) {
+					node.contents = null;
+					node.url = properties.url;
+				}
+				// Add a function that defers querying the file size until it is asked the first time.
+				Object.defineProperties(node, {
+					usedBytes: {
+						get: function () {
+							return this.contents.length;
+						},
+					},
+				});
+				// override each stream op with one that tries to force load the lazy file first
+				var stream_ops = {};
+				var keys = Object.keys(node.stream_ops);
+				keys.forEach((key) => {
+					var fn = node.stream_ops[key];
+					stream_ops[key] = (...args) => {
+						FS.forceLoadFile(node);
+						return fn(...args);
+					};
+				});
+				function writeChunks(stream, buffer, offset, length, position) {
+					var contents = stream.node.contents;
+					if (position >= contents.length) return 0;
+					var size = Math.min(contents.length - position, length);
+					assert(size >= 0);
+					if (contents.slice) {
+						// normal array
+						for (var i = 0; i < size; i++) {
+							buffer[offset + i] = contents[position + i];
+						}
+					} else {
+						for (var i = 0; i < size; i++) {
+							// LazyUint8Array from sync binary XHR
+							buffer[offset + i] = contents.get(position + i);
+						}
+					}
+					return size;
+				}
+				// use a custom read function
+				stream_ops.read = (stream, buffer, offset, length, position) => {
+					FS.forceLoadFile(node);
+					return writeChunks(stream, buffer, offset, length, position);
+				};
+				// use a custom mmap function
+				stream_ops.mmap = (stream, length, position, prot, flags) => {
+					FS.forceLoadFile(node);
+					var ptr = mmapAlloc(length);
+					if (!ptr) {
+						throw new FS.ErrnoError(48);
+					}
+					writeChunks(stream, HEAP8, ptr, length, position);
+					return { ptr, allocated: true };
+				};
+				node.stream_ops = stream_ops;
+				return node;
+			},
+			absolutePath() {
+				abort("FS.absolutePath has been removed; use PATH_FS.resolve instead");
+			},
+			createFolder() {
+				abort("FS.createFolder has been removed; use FS.mkdir instead");
+			},
+			createLink() {
+				abort("FS.createLink has been removed; use FS.symlink instead");
+			},
+			joinPath() {
+				abort("FS.joinPath has been removed; use PATH.join instead");
+			},
+			mmapAlloc() {
+				abort(
+					"FS.mmapAlloc has been replaced by the top level function mmapAlloc",
+				);
+			},
+			standardizePath() {
+				abort(
+					"FS.standardizePath has been removed; use PATH.normalize instead",
+				);
+			},
+		};
+
+		var SYSCALLS = {
+			DEFAULT_POLLMASK: 5,
+			calculateAt(dirfd, path, allowEmpty) {
+				if (PATH.isAbs(path)) {
+					return path;
+				}
+				// relative path
+				var dir;
+				if (dirfd === -100) {
+					dir = FS.cwd();
+				} else {
+					var dirstream = SYSCALLS.getStreamFromFD(dirfd);
+					dir = dirstream.path;
+				}
+				if (path.length == 0) {
+					if (!allowEmpty) {
+						throw new FS.ErrnoError(44);
+					}
+					return dir;
+				}
+				return dir + "/" + path;
+			},
+			doStat(func, path, buf) {
+				var stat = func(path);
+				HEAP32[buf >> 2] = stat.dev;
+				HEAP32[(buf + 4) >> 2] = stat.mode;
+				HEAPU32[(buf + 8) >> 2] = stat.nlink;
+				HEAP32[(buf + 12) >> 2] = stat.uid;
+				HEAP32[(buf + 16) >> 2] = stat.gid;
+				HEAP32[(buf + 20) >> 2] = stat.rdev;
+				(tempI64 = [
+					stat.size >>> 0,
+					((tempDouble = stat.size),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(buf + 24) >> 2] = tempI64[0]),
+					(HEAP32[(buf + 28) >> 2] = tempI64[1]);
+				HEAP32[(buf + 32) >> 2] = 4096;
+				HEAP32[(buf + 36) >> 2] = stat.blocks;
+				var atime = stat.atime.getTime();
+				var mtime = stat.mtime.getTime();
+				var ctime = stat.ctime.getTime();
+				(tempI64 = [
+					Math.floor(atime / 1000) >>> 0,
+					((tempDouble = Math.floor(atime / 1000)),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(buf + 40) >> 2] = tempI64[0]),
+					(HEAP32[(buf + 44) >> 2] = tempI64[1]);
+				HEAPU32[(buf + 48) >> 2] = (atime % 1000) * 1000 * 1000;
+				(tempI64 = [
+					Math.floor(mtime / 1000) >>> 0,
+					((tempDouble = Math.floor(mtime / 1000)),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(buf + 56) >> 2] = tempI64[0]),
+					(HEAP32[(buf + 60) >> 2] = tempI64[1]);
+				HEAPU32[(buf + 64) >> 2] = (mtime % 1000) * 1000 * 1000;
+				(tempI64 = [
+					Math.floor(ctime / 1000) >>> 0,
+					((tempDouble = Math.floor(ctime / 1000)),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(buf + 72) >> 2] = tempI64[0]),
+					(HEAP32[(buf + 76) >> 2] = tempI64[1]);
+				HEAPU32[(buf + 80) >> 2] = (ctime % 1000) * 1000 * 1000;
+				(tempI64 = [
+					stat.ino >>> 0,
+					((tempDouble = stat.ino),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(buf + 88) >> 2] = tempI64[0]),
+					(HEAP32[(buf + 92) >> 2] = tempI64[1]);
+				return 0;
+			},
+			doMsync(addr, stream, len, flags, offset) {
+				if (!FS.isFile(stream.node.mode)) {
+					throw new FS.ErrnoError(43);
+				}
+				if (flags & 2) {
+					// MAP_PRIVATE calls need not to be synced back to underlying fs
+					return 0;
+				}
+				var buffer = HEAPU8.slice(addr, addr + len);
+				FS.msync(stream, buffer, offset, len, flags);
+			},
+			getStreamFromFD(fd) {
+				var stream = FS.getStreamChecked(fd);
+				return stream;
+			},
+			varargs: undefined,
+			getStr(ptr) {
+				var ret = UTF8ToString(ptr);
+				return ret;
+			},
+		};
+		var ___syscall__newselect = function (
+			nfds,
+			readfds,
+			writefds,
+			exceptfds,
+			timeout,
+		) {
+			try {
+				// readfds are supported,
+				// writefds checks socket open status
+				// exceptfds are supported, although on web, such exceptional conditions never arise in web sockets
+				//                          and so the exceptfds list will always return empty.
+				// timeout is supported, although on SOCKFS and PIPEFS these are ignored and always treated as 0 - fully async
+				assert(nfds <= 64, "nfds must be less than or equal to 64"); // fd sets have 64 bits // TODO: this could be 1024 based on current musl headers
+
+				var total = 0;
+
+				var srcReadLow = readfds ? HEAP32[readfds >> 2] : 0,
+					srcReadHigh = readfds ? HEAP32[(readfds + 4) >> 2] : 0;
+				var srcWriteLow = writefds ? HEAP32[writefds >> 2] : 0,
+					srcWriteHigh = writefds ? HEAP32[(writefds + 4) >> 2] : 0;
+				var srcExceptLow = exceptfds ? HEAP32[exceptfds >> 2] : 0,
+					srcExceptHigh = exceptfds ? HEAP32[(exceptfds + 4) >> 2] : 0;
+
+				var dstReadLow = 0,
+					dstReadHigh = 0;
+				var dstWriteLow = 0,
+					dstWriteHigh = 0;
+				var dstExceptLow = 0,
+					dstExceptHigh = 0;
+
+				var allLow =
+					(readfds ? HEAP32[readfds >> 2] : 0) |
+					(writefds ? HEAP32[writefds >> 2] : 0) |
+					(exceptfds ? HEAP32[exceptfds >> 2] : 0);
+				var allHigh =
+					(readfds ? HEAP32[(readfds + 4) >> 2] : 0) |
+					(writefds ? HEAP32[(writefds + 4) >> 2] : 0) |
+					(exceptfds ? HEAP32[(exceptfds + 4) >> 2] : 0);
+
+				var check = (fd, low, high, val) => (fd < 32 ? low & val : high & val);
+
+				for (var fd = 0; fd < nfds; fd++) {
+					var mask = 1 << (fd % 32);
+					if (!check(fd, allLow, allHigh, mask)) {
+						continue; // index isn't in the set
+					}
+
+					var stream = SYSCALLS.getStreamFromFD(fd);
+
+					var flags = SYSCALLS.DEFAULT_POLLMASK;
+
+					if (stream.stream_ops.poll) {
+						var timeoutInMillis = -1;
+						if (timeout) {
+							// select(2) is declared to accept "struct timeval { time_t tv_sec; suseconds_t tv_usec; }".
+							// However, musl passes the two values to the syscall as an array of long values.
+							// Note that sizeof(time_t) != sizeof(long) in wasm32. The former is 8, while the latter is 4.
+							// This means using "C_STRUCTS.timeval.tv_usec" leads to a wrong offset.
+							// So, instead, we use POINTER_SIZE.
+							var tv_sec = readfds ? HEAP32[timeout >> 2] : 0,
+								tv_usec = readfds ? HEAP32[(timeout + 4) >> 2] : 0;
+							timeoutInMillis = (tv_sec + tv_usec / 1000000) * 1000;
+						}
+						flags = stream.stream_ops.poll(stream, timeoutInMillis);
+					}
+
+					if (flags & 1 && check(fd, srcReadLow, srcReadHigh, mask)) {
+						fd < 32
+							? (dstReadLow = dstReadLow | mask)
+							: (dstReadHigh = dstReadHigh | mask);
+						total++;
+					}
+					if (flags & 4 && check(fd, srcWriteLow, srcWriteHigh, mask)) {
+						fd < 32
+							? (dstWriteLow = dstWriteLow | mask)
+							: (dstWriteHigh = dstWriteHigh | mask);
+						total++;
+					}
+					if (flags & 2 && check(fd, srcExceptLow, srcExceptHigh, mask)) {
+						fd < 32
+							? (dstExceptLow = dstExceptLow | mask)
+							: (dstExceptHigh = dstExceptHigh | mask);
+						total++;
+					}
+				}
+
+				if (readfds) {
+					HEAP32[readfds >> 2] = dstReadLow;
+					HEAP32[(readfds + 4) >> 2] = dstReadHigh;
+				}
+				if (writefds) {
+					HEAP32[writefds >> 2] = dstWriteLow;
+					HEAP32[(writefds + 4) >> 2] = dstWriteHigh;
+				}
+				if (exceptfds) {
+					HEAP32[exceptfds >> 2] = dstExceptLow;
+					HEAP32[(exceptfds + 4) >> 2] = dstExceptHigh;
+				}
+
+				return total;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		};
+
+		var SOCKFS = {
+			websocketArgs: {},
+			callbacks: {},
+			on(event, callback) {
+				SOCKFS.callbacks[event] = callback;
+			},
+			emit(event, param) {
+				SOCKFS.callbacks[event]?.(param);
+			},
+			mount(mount) {
+				// The incomming Module['websocket'] can be used for configuring
+				// configuring subprotocol/url, etc
+				SOCKFS.websocketArgs = Module["websocket"] || {};
+				// Add the Event registration mechanism to the exported websocket configuration
+				// object so we can register network callbacks from native JavaScript too.
+				// For more documentation see system/include/emscripten/emscripten.h
+				(Module["websocket"] ??= {})["on"] = SOCKFS.on;
+
+				return FS.createNode(null, "/", 16895, 0);
+			},
+			createSocket(family, type, protocol) {
+				type &= ~526336; // Some applications may pass it; it makes no sense for a single process.
+				var streaming = type == 1;
+				if (streaming && protocol && protocol != 6) {
+					throw new FS.ErrnoError(66); // if SOCK_STREAM, must be tcp or 0.
+				}
+
+				// create our internal socket structure
+				var sock = {
+					family,
+					type,
+					protocol,
+					server: null,
+					error: null, // Used in getsockopt for SOL_SOCKET/SO_ERROR test
+					peers: {},
+					pending: [],
+					recv_queue: [],
+					sock_ops: SOCKFS.websocket_sock_ops,
+				};
+
+				// create the filesystem node to store the socket structure
+				var name = SOCKFS.nextname();
+				var node = FS.createNode(SOCKFS.root, name, 49152, 0);
+				node.sock = sock;
+
+				// and the wrapping stream that enables library functions such
+				// as read and write to indirectly interact with the socket
+				var stream = FS.createStream({
+					path: name,
+					node,
+					flags: 2,
+					seekable: false,
+					stream_ops: SOCKFS.stream_ops,
+				});
+
+				// map the new stream to the socket structure (sockets have a 1:1
+				// relationship with a stream)
+				sock.stream = stream;
+
+				return sock;
+			},
+			getSocket(fd) {
+				var stream = FS.getStream(fd);
+				if (!stream || !FS.isSocket(stream.node.mode)) {
+					return null;
+				}
+				return stream.node.sock;
+			},
+			stream_ops: {
+				poll(stream) {
+					var sock = stream.node.sock;
+					return sock.sock_ops.poll(sock);
+				},
+				ioctl(stream, request, varargs) {
+					var sock = stream.node.sock;
+					return sock.sock_ops.ioctl(sock, request, varargs);
+				},
+				read(stream, buffer, offset, length, position /* ignored */) {
+					var sock = stream.node.sock;
+					var msg = sock.sock_ops.recvmsg(sock, length);
+					if (!msg) {
+						// socket is closed
+						return 0;
+					}
+					buffer.set(msg.buffer, offset);
+					return msg.buffer.length;
+				},
+				write(stream, buffer, offset, length, position /* ignored */) {
+					var sock = stream.node.sock;
+					return sock.sock_ops.sendmsg(sock, buffer, offset, length);
+				},
+				close(stream) {
+					var sock = stream.node.sock;
+					sock.sock_ops.close(sock);
+				},
+			},
+			nextname() {
+				if (!SOCKFS.nextname.current) {
+					SOCKFS.nextname.current = 0;
+				}
+				return `socket[${SOCKFS.nextname.current++}]`;
+			},
+			websocket_sock_ops: {
+				createPeer(sock, addr, port) {
+					var ws;
+
+					if (typeof addr == "object") {
+						ws = addr;
+						addr = null;
+						port = null;
+					}
+
+					if (ws) {
+						// for sockets that've already connected (e.g. we're the server)
+						// we can inspect the _socket property for the address
+						if (ws._socket) {
+							addr = ws._socket.remoteAddress;
+							port = ws._socket.remotePort;
+						}
+						// if we're just now initializing a connection to the remote,
+						// inspect the url property
+						else {
+							var result = /ws[s]?:\/\/([^:]+):(\d+)/.exec(ws.url);
+							if (!result) {
+								throw new Error(
+									"WebSocket URL must be in the format ws(s)://address:port",
+								);
+							}
+							addr = result[1];
+							port = parseInt(result[2], 10);
+						}
+					} else {
+						// create the actual websocket object and connect
+						try {
+							// The default value is 'ws://' the replace is needed because the compiler replaces '//' comments with '#'
+							// comments without checking context, so we'd end up with ws:#, the replace swaps the '#' for '//' again.
+							var url = "ws:#".replace("#", "//");
+							// Make the WebSocket subprotocol (Sec-WebSocket-Protocol) default to binary if no configuration is set.
+							var subProtocols = "binary"; // The default value is 'binary'
+							// The default WebSocket options
+							var opts = undefined;
+
+							// Fetch runtime WebSocket URL config.
+							if (SOCKFS.websocketArgs["url"]) {
+								url = SOCKFS.websocketArgs["url"];
+							}
+							// Fetch runtime WebSocket subprotocol config.
+							if (SOCKFS.websocketArgs["subprotocol"]) {
+								subProtocols = SOCKFS.websocketArgs["subprotocol"];
+							} else if (SOCKFS.websocketArgs["subprotocol"] === null) {
+								subProtocols = "null";
+							}
+
+							if (url === "ws://" || url === "wss://") {
+								// Is the supplied URL config just a prefix, if so complete it.
+								var parts = addr.split("/");
+								url =
+									url + parts[0] + ":" + port + "/" + parts.slice(1).join("/");
+							}
+
+							if (subProtocols !== "null") {
+								// The regex trims the string (removes spaces at the beginning and end, then splits the string by
+								// <any space>,<any space> into an Array. Whitespace removal is important for Websockify and ws.
+								subProtocols = subProtocols
+									.replace(/^ +| +$/g, "")
+									.split(/ *, */);
+
+								opts = subProtocols;
+							}
+
+							// If node we use the ws library.
+							var WebSocketConstructor;
+							{
+								WebSocketConstructor = WebSocket;
+							}
+							ws = new WebSocketConstructor(url, opts);
+							ws.binaryType = "arraybuffer";
+						} catch (e) {
+							throw new FS.ErrnoError(23);
+						}
+					}
+
+					var peer = {
+						addr,
+						port,
+						socket: ws,
+						msg_send_queue: [],
+					};
+
+					SOCKFS.websocket_sock_ops.addPeer(sock, peer);
+					SOCKFS.websocket_sock_ops.handlePeerEvents(sock, peer);
+
+					// if this is a bound dgram socket, send the port number first to allow
+					// us to override the ephemeral port reported to us by remotePort on the
+					// remote end.
+					if (sock.type === 2 && typeof sock.sport != "undefined") {
+						peer.msg_send_queue.push(
+							new Uint8Array([
+								255,
+								255,
+								255,
+								255,
+								"p".charCodeAt(0),
+								"o".charCodeAt(0),
+								"r".charCodeAt(0),
+								"t".charCodeAt(0),
+								(sock.sport & 0xff00) >> 8,
+								sock.sport & 0xff,
+							]),
+						);
+					}
+
+					return peer;
+				},
+				getPeer(sock, addr, port) {
+					return sock.peers[addr + ":" + port];
+				},
+				addPeer(sock, peer) {
+					sock.peers[peer.addr + ":" + peer.port] = peer;
+				},
+				removePeer(sock, peer) {
+					delete sock.peers[peer.addr + ":" + peer.port];
+				},
+				handlePeerEvents(sock, peer) {
+					var first = true;
+
+					var handleOpen = function () {
+						sock.connecting = false;
+						SOCKFS.emit("open", sock.stream.fd);
+
+						try {
+							var queued = peer.msg_send_queue.shift();
+							while (queued) {
+								peer.socket.send(queued);
+								queued = peer.msg_send_queue.shift();
+							}
+						} catch (e) {
+							// not much we can do here in the way of proper error handling as we've already
+							// lied and said this data was sent. shut it down.
+							peer.socket.close();
+						}
+					};
+
+					function handleMessage(data) {
+						if (typeof data == "string") {
+							var encoder = new TextEncoder(); // should be utf-8
+							data = encoder.encode(data); // make a typed array from the string
+						} else {
+							assert(data.byteLength !== undefined); // must receive an ArrayBuffer
+							if (data.byteLength == 0) {
+								// An empty ArrayBuffer will emit a pseudo disconnect event
+								// as recv/recvmsg will return zero which indicates that a socket
+								// has performed a shutdown although the connection has not been disconnected yet.
+								return;
+							}
+							data = new Uint8Array(data); // make a typed array view on the array buffer
+						}
+
+						// if this is the port message, override the peer's port with it
+						var wasfirst = first;
+						first = false;
+						if (
+							wasfirst &&
+							data.length === 10 &&
+							data[0] === 255 &&
+							data[1] === 255 &&
+							data[2] === 255 &&
+							data[3] === 255 &&
+							data[4] === "p".charCodeAt(0) &&
+							data[5] === "o".charCodeAt(0) &&
+							data[6] === "r".charCodeAt(0) &&
+							data[7] === "t".charCodeAt(0)
+						) {
+							// update the peer's port and it's key in the peer map
+							var newport = (data[8] << 8) | data[9];
+							SOCKFS.websocket_sock_ops.removePeer(sock, peer);
+							peer.port = newport;
+							SOCKFS.websocket_sock_ops.addPeer(sock, peer);
+							return;
+						}
+
+						sock.recv_queue.push({
+							addr: peer.addr,
+							port: peer.port,
+							data: data,
+						});
+						SOCKFS.emit("message", sock.stream.fd);
+					}
+
+					if (ENVIRONMENT_IS_NODE) {
+						peer.socket.on("open", handleOpen);
+						peer.socket.on("message", function (data, isBinary) {
+							if (!isBinary) {
+								return;
+							}
+							handleMessage(new Uint8Array(data).buffer); // copy from node Buffer -> ArrayBuffer
+						});
+						peer.socket.on("close", function () {
+							SOCKFS.emit("close", sock.stream.fd);
+						});
+						peer.socket.on("error", function (error) {
+							// Although the ws library may pass errors that may be more descriptive than
+							// ECONNREFUSED they are not necessarily the expected error code e.g.
+							// ENOTFOUND on getaddrinfo seems to be node.js specific, so using ECONNREFUSED
+							// is still probably the most useful thing to do.
+							sock.error = 14; // Used in getsockopt for SOL_SOCKET/SO_ERROR test.
+							SOCKFS.emit("error", [
+								sock.stream.fd,
+								sock.error,
+								"ECONNREFUSED: Connection refused",
+							]);
+							// don't throw
+						});
+					} else {
+						peer.socket.onopen = handleOpen;
+						peer.socket.onclose = function () {
+							SOCKFS.emit("close", sock.stream.fd);
+						};
+						peer.socket.onmessage = function peer_socket_onmessage(event) {
+							handleMessage(event.data);
+						};
+						peer.socket.onerror = function (error) {
+							// The WebSocket spec only allows a 'simple event' to be thrown on error,
+							// so we only really know as much as ECONNREFUSED.
+							sock.error = 14; // Used in getsockopt for SOL_SOCKET/SO_ERROR test.
+							SOCKFS.emit("error", [
+								sock.stream.fd,
+								sock.error,
+								"ECONNREFUSED: Connection refused",
+							]);
+						};
+					}
+				},
+				poll(sock) {
+					if (sock.type === 1 && sock.server) {
+						// listen sockets should only say they're available for reading
+						// if there are pending clients.
+						return sock.pending.length ? 64 | 1 : 0;
+					}
+
+					var mask = 0;
+					var dest =
+						sock.type === 1
+							? // we only care about the socket state for connection-based sockets
+								SOCKFS.websocket_sock_ops.getPeer(sock, sock.daddr, sock.dport)
+							: null;
+
+					if (
+						sock.recv_queue.length ||
+						!dest || // connection-less sockets are always ready to read
+						(dest && dest.socket.readyState === dest.socket.CLOSING) ||
+						(dest && dest.socket.readyState === dest.socket.CLOSED)
+					) {
+						// let recv return 0 once closed
+						mask |= 64 | 1;
+					}
+
+					if (
+						!dest || // connection-less sockets are always ready to write
+						(dest && dest.socket.readyState === dest.socket.OPEN)
+					) {
+						mask |= 4;
+					}
+
+					if (
+						(dest && dest.socket.readyState === dest.socket.CLOSING) ||
+						(dest && dest.socket.readyState === dest.socket.CLOSED)
+					) {
+						// When an non-blocking connect fails mark the socket as writable.
+						// Its up to the calling code to then use getsockopt with SO_ERROR to
+						// retrieve the error.
+						// See https://man7.org/linux/man-pages/man2/connect.2.html
+						if (sock.connecting) {
+							mask |= 4;
+						} else {
+							mask |= 16;
+						}
+					}
+
+					return mask;
+				},
+				ioctl(sock, request, arg) {
+					switch (request) {
+						case 21531:
+							var bytes = 0;
+							if (sock.recv_queue.length) {
+								bytes = sock.recv_queue[0].data.length;
+							}
+							HEAP32[arg >> 2] = bytes;
+							return 0;
+						default:
+							return 28;
+					}
+				},
+				close(sock) {
+					// if we've spawned a listen server, close it
+					if (sock.server) {
+						try {
+							sock.server.close();
+						} catch (e) {}
+						sock.server = null;
+					}
+					// close any peer connections
+					var peers = Object.keys(sock.peers);
+					for (var i = 0; i < peers.length; i++) {
+						var peer = sock.peers[peers[i]];
+						try {
+							peer.socket.close();
+						} catch (e) {}
+						SOCKFS.websocket_sock_ops.removePeer(sock, peer);
+					}
+					return 0;
+				},
+				bind(sock, addr, port) {
+					if (
+						typeof sock.saddr != "undefined" ||
+						typeof sock.sport != "undefined"
+					) {
+						throw new FS.ErrnoError(28); // already bound
+					}
+					sock.saddr = addr;
+					sock.sport = port;
+					// in order to emulate dgram sockets, we need to launch a listen server when
+					// binding on a connection-less socket
+					// note: this is only required on the server side
+					if (sock.type === 2) {
+						// close the existing server if it exists
+						if (sock.server) {
+							sock.server.close();
+							sock.server = null;
+						}
+						// swallow error operation not supported error that occurs when binding in the
+						// browser where this isn't supported
+						try {
+							sock.sock_ops.listen(sock, 0);
+						} catch (e) {
+							if (!(e.name === "ErrnoError")) throw e;
+							if (e.errno !== 138) throw e;
+						}
+					}
+				},
+				connect(sock, addr, port) {
+					if (sock.server) {
+						throw new FS.ErrnoError(138);
+					}
+
+					// TODO autobind
+					// if (!sock.addr && sock.type == 2) {
+					// }
+
+					// early out if we're already connected / in the middle of connecting
+					if (
+						typeof sock.daddr != "undefined" &&
+						typeof sock.dport != "undefined"
+					) {
+						var dest = SOCKFS.websocket_sock_ops.getPeer(
+							sock,
+							sock.daddr,
+							sock.dport,
+						);
+						if (dest) {
+							if (dest.socket.readyState === dest.socket.CONNECTING) {
+								throw new FS.ErrnoError(7);
+							} else {
+								throw new FS.ErrnoError(30);
+							}
+						}
+					}
+
+					// add the socket to our peer list and set our
+					// destination address / port to match
+					var peer = SOCKFS.websocket_sock_ops.createPeer(sock, addr, port);
+					sock.daddr = peer.addr;
+					sock.dport = peer.port;
+
+					// because we cannot synchronously block to wait for the WebSocket
+					// connection to complete, we return here pretending that the connection
+					// was a success.
+					sock.connecting = true;
+				},
+				listen(sock, backlog) {
+					if (!ENVIRONMENT_IS_NODE) {
+						throw new FS.ErrnoError(138);
+					}
+				},
+				accept(listensock) {
+					if (!listensock.server || !listensock.pending.length) {
+						throw new FS.ErrnoError(28);
+					}
+					var newsock = listensock.pending.shift();
+					newsock.stream.flags = listensock.stream.flags;
+					return newsock;
+				},
+				getname(sock, peer) {
+					var addr, port;
+					if (peer) {
+						if (sock.daddr === undefined || sock.dport === undefined) {
+							throw new FS.ErrnoError(53);
+						}
+						addr = sock.daddr;
+						port = sock.dport;
+					} else {
+						// TODO saddr and sport will be set for bind()'d UDP sockets, but what
+						// should we be returning for TCP sockets that've been connect()'d?
+						addr = sock.saddr || 0;
+						port = sock.sport || 0;
+					}
+					return { addr, port };
+				},
+				sendmsg(sock, buffer, offset, length, addr, port) {
+					if (sock.type === 2) {
+						// connection-less sockets will honor the message address,
+						// and otherwise fall back to the bound destination address
+						if (addr === undefined || port === undefined) {
+							addr = sock.daddr;
+							port = sock.dport;
+						}
+						// if there was no address to fall back to, error out
+						if (addr === undefined || port === undefined) {
+							throw new FS.ErrnoError(17);
+						}
+					} else {
+						// connection-based sockets will only use the bound
+						addr = sock.daddr;
+						port = sock.dport;
+					}
+
+					// find the peer for the destination address
+					var dest = SOCKFS.websocket_sock_ops.getPeer(sock, addr, port);
+
+					// early out if not connected with a connection-based socket
+					if (sock.type === 1) {
+						if (
+							!dest ||
+							dest.socket.readyState === dest.socket.CLOSING ||
+							dest.socket.readyState === dest.socket.CLOSED
+						) {
+							throw new FS.ErrnoError(53);
+						}
+					}
+
+					// create a copy of the incoming data to send, as the WebSocket API
+					// doesn't work entirely with an ArrayBufferView, it'll just send
+					// the entire underlying buffer
+					if (ArrayBuffer.isView(buffer)) {
+						offset += buffer.byteOffset;
+						buffer = buffer.buffer;
+					}
+
+					var data = buffer.slice(offset, offset + length);
+
+					// if we don't have a cached connectionless UDP datagram connection, or
+					// the TCP socket is still connecting, queue the message to be sent upon
+					// connect, and lie, saying the data was sent now.
+					if (!dest || dest.socket.readyState !== dest.socket.OPEN) {
+						// if we're not connected, open a new connection
+						if (sock.type === 2) {
+							if (
+								!dest ||
+								dest.socket.readyState === dest.socket.CLOSING ||
+								dest.socket.readyState === dest.socket.CLOSED
+							) {
+								dest = SOCKFS.websocket_sock_ops.createPeer(sock, addr, port);
+							}
+						}
+						dest.msg_send_queue.push(data);
+						return length;
+					}
+
+					try {
+						// send the actual data
+						dest.socket.send(data);
+						return length;
+					} catch (e) {
+						throw new FS.ErrnoError(28);
+					}
+				},
+				recvmsg(sock, length) {
+					// http://pubs.opengroup.org/onlinepubs/7908799/xns/recvmsg.html
+					if (sock.type === 1 && sock.server) {
+						// tcp servers should not be recv()'ing on the listen socket
+						throw new FS.ErrnoError(53);
+					}
+
+					var queued = sock.recv_queue.shift();
+					if (!queued) {
+						if (sock.type === 1) {
+							var dest = SOCKFS.websocket_sock_ops.getPeer(
+								sock,
+								sock.daddr,
+								sock.dport,
+							);
+
+							if (!dest) {
+								// if we have a destination address but are not connected, error out
+								throw new FS.ErrnoError(53);
+							}
+							if (
+								dest.socket.readyState === dest.socket.CLOSING ||
+								dest.socket.readyState === dest.socket.CLOSED
+							) {
+								// return null if the socket has closed
+								return null;
+							}
+							// else, our socket is in a valid state but truly has nothing available
+							throw new FS.ErrnoError(6);
+						}
+						throw new FS.ErrnoError(6);
+					}
+
+					// queued.data will be an ArrayBuffer if it's unadulterated, but if it's
+					// requeued TCP data it'll be an ArrayBufferView
+					var queuedLength = queued.data.byteLength || queued.data.length;
+					var queuedOffset = queued.data.byteOffset || 0;
+					var queuedBuffer = queued.data.buffer || queued.data;
+					var bytesRead = Math.min(length, queuedLength);
+					var res = {
+						buffer: new Uint8Array(queuedBuffer, queuedOffset, bytesRead),
+						addr: queued.addr,
+						port: queued.port,
+					};
+
+					// push back any unread data for TCP connections
+					if (sock.type === 1 && bytesRead < queuedLength) {
+						var bytesRemaining = queuedLength - bytesRead;
+						queued.data = new Uint8Array(
+							queuedBuffer,
+							queuedOffset + bytesRead,
+							bytesRemaining,
+						);
+						sock.recv_queue.unshift(queued);
+					}
+
+					return res;
+				},
+			},
+		};
+
+		var getSocketFromFD = (fd) => {
+			var socket = SOCKFS.getSocket(fd);
+			if (!socket) throw new FS.ErrnoError(8);
+			return socket;
+		};
+
+		var Sockets = {
+			BUFFER_SIZE: 10240,
+			MAX_BUFFER_SIZE: 10485760,
+			nextFd: 1,
+			fds: {},
+			nextport: 1,
+			maxport: 65535,
+			peer: null,
+			connections: {},
+			portmap: {},
+			localAddr: 4261412874,
+			addrPool: [
+				33554442, 50331658, 67108874, 83886090, 100663306, 117440522, 134217738,
+				150994954, 167772170, 184549386, 201326602, 218103818, 234881034,
+			],
+		};
+
+		var inetPton4 = (str) => {
+			var b = str.split(".");
+			for (var i = 0; i < 4; i++) {
+				var tmp = Number(b[i]);
+				if (isNaN(tmp)) return null;
+				b[i] = tmp;
+			}
+			return (b[0] | (b[1] << 8) | (b[2] << 16) | (b[3] << 24)) >>> 0;
+		};
+
+		/** @suppress {checkTypes} */
+		var jstoi_q = (str) => parseInt(str);
+		var inetPton6 = (str) => {
+			var words;
+			var w, offset, z, i;
+			/* http://home.deds.nl/~aeron/regex/ */
+			var valid6regx =
+				/^((?=.*::)(?!.*::.+::)(::)?([\dA-F]{1,4}:(:|\b)|){5}|([\dA-F]{1,4}:){6})((([\dA-F]{1,4}((?!\3)::|:\b|$))|(?!\2\3)){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i;
+			var parts = [];
+			if (!valid6regx.test(str)) {
+				return null;
+			}
+			if (str === "::") {
+				return [0, 0, 0, 0, 0, 0, 0, 0];
+			}
+			// Z placeholder to keep track of zeros when splitting the string on ":"
+			if (str.startsWith("::")) {
+				str = str.replace("::", "Z:"); // leading zeros case
+			} else {
+				str = str.replace("::", ":Z:");
+			}
+
+			if (str.indexOf(".") > 0) {
+				// parse IPv4 embedded stress
+				str = str.replace(new RegExp("[.]", "g"), ":");
+				words = str.split(":");
+				words[words.length - 4] =
+					jstoi_q(words[words.length - 4]) +
+					jstoi_q(words[words.length - 3]) * 256;
+				words[words.length - 3] =
+					jstoi_q(words[words.length - 2]) +
+					jstoi_q(words[words.length - 1]) * 256;
+				words = words.slice(0, words.length - 2);
+			} else {
+				words = str.split(":");
+			}
+
+			offset = 0;
+			z = 0;
+			for (w = 0; w < words.length; w++) {
+				if (typeof words[w] == "string") {
+					if (words[w] === "Z") {
+						// compressed zeros - write appropriate number of zero words
+						for (z = 0; z < 8 - words.length + 1; z++) {
+							parts[w + z] = 0;
+						}
+						offset = z - 1;
+					} else {
+						// parse hex to field to 16-bit value and write it in network byte-order
+						parts[w + offset] = _htons(parseInt(words[w], 16));
+					}
+				} else {
+					// parsed IPv4 words
+					parts[w + offset] = words[w];
+				}
+			}
+			return [
+				(parts[1] << 16) | parts[0],
+				(parts[3] << 16) | parts[2],
+				(parts[5] << 16) | parts[4],
+				(parts[7] << 16) | parts[6],
+			];
+		};
+
+		/** @param {number=} addrlen */
+		var writeSockaddr = (sa, family, addr, port, addrlen) => {
+			switch (family) {
+				case 2:
+					addr = inetPton4(addr);
+					zeroMemory(sa, 16);
+					if (addrlen) {
+						HEAP32[addrlen >> 2] = 16;
+					}
+					HEAP16[sa >> 1] = family;
+					HEAP32[(sa + 4) >> 2] = addr;
+					HEAP16[(sa + 2) >> 1] = _htons(port);
+					break;
+				case 10:
+					addr = inetPton6(addr);
+					zeroMemory(sa, 28);
+					if (addrlen) {
+						HEAP32[addrlen >> 2] = 28;
+					}
+					HEAP32[sa >> 2] = family;
+					HEAP32[(sa + 8) >> 2] = addr[0];
+					HEAP32[(sa + 12) >> 2] = addr[1];
+					HEAP32[(sa + 16) >> 2] = addr[2];
+					HEAP32[(sa + 20) >> 2] = addr[3];
+					HEAP16[(sa + 2) >> 1] = _htons(port);
+					break;
+				default:
+					return 5;
+			}
+			return 0;
+		};
+
+		var DNS = {
+			address_map: {
+				id: 1,
+				addrs: {},
+				names: {},
+			},
+			lookup_name(name) {
+				// If the name is already a valid ipv4 / ipv6 address, don't generate a fake one.
+				var res = inetPton4(name);
+				if (res !== null) {
+					return name;
+				}
+				res = inetPton6(name);
+				if (res !== null) {
+					return name;
+				}
+
+				// See if this name is already mapped.
+				var addr;
+
+				if (DNS.address_map.addrs[name]) {
+					addr = DNS.address_map.addrs[name];
+				} else {
+					var id = DNS.address_map.id++;
+					assert(id < 65535, "exceeded max address mappings of 65535");
+
+					addr = "172.29." + (id & 0xff) + "." + (id & 0xff00);
+
+					DNS.address_map.names[addr] = name;
+					DNS.address_map.addrs[name] = addr;
+				}
+
+				return addr;
+			},
+			lookup_addr(addr) {
+				if (DNS.address_map.names[addr]) {
+					return DNS.address_map.names[addr];
+				}
+
+				return null;
+			},
+		};
+		function ___syscall_accept4(fd, addr, addrlen, flags, d1, d2) {
+			try {
+				var sock = getSocketFromFD(fd);
+				var newsock = sock.sock_ops.accept(sock);
+				if (addr) {
+					var errno = writeSockaddr(
+						addr,
+						newsock.family,
+						DNS.lookup_name(newsock.daddr),
+						newsock.dport,
+						addrlen,
+					);
+					assert(!errno);
+				}
+				return newsock.stream.fd;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var inetNtop4 = (addr) =>
+			(addr & 0xff) +
+			"." +
+			((addr >> 8) & 0xff) +
+			"." +
+			((addr >> 16) & 0xff) +
+			"." +
+			((addr >> 24) & 0xff);
+
+		var inetNtop6 = (ints) => {
+			//  ref:  http://www.ietf.org/rfc/rfc2373.txt - section 2.5.4
+			//  Format for IPv4 compatible and mapped  128-bit IPv6 Addresses
+			//  128-bits are split into eight 16-bit words
+			//  stored in network byte order (big-endian)
+			//  |                80 bits               | 16 |      32 bits        |
+			//  +-----------------------------------------------------------------+
+			//  |               10 bytes               |  2 |      4 bytes        |
+			//  +--------------------------------------+--------------------------+
+			//  +               5 words                |  1 |      2 words        |
+			//  +--------------------------------------+--------------------------+
+			//  |0000..............................0000|0000|    IPv4 ADDRESS     | (compatible)
+			//  +--------------------------------------+----+---------------------+
+			//  |0000..............................0000|FFFF|    IPv4 ADDRESS     | (mapped)
+			//  +--------------------------------------+----+---------------------+
+			var str = "";
+			var word = 0;
+			var longest = 0;
+			var lastzero = 0;
+			var zstart = 0;
+			var len = 0;
+			var i = 0;
+			var parts = [
+				ints[0] & 0xffff,
+				ints[0] >> 16,
+				ints[1] & 0xffff,
+				ints[1] >> 16,
+				ints[2] & 0xffff,
+				ints[2] >> 16,
+				ints[3] & 0xffff,
+				ints[3] >> 16,
+			];
+
+			// Handle IPv4-compatible, IPv4-mapped, loopback and any/unspecified addresses
+
+			var hasipv4 = true;
+			var v4part = "";
+			// check if the 10 high-order bytes are all zeros (first 5 words)
+			for (i = 0; i < 5; i++) {
+				if (parts[i] !== 0) {
+					hasipv4 = false;
+					break;
+				}
+			}
+
+			if (hasipv4) {
+				// low-order 32-bits store an IPv4 address (bytes 13 to 16) (last 2 words)
+				v4part = inetNtop4(parts[6] | (parts[7] << 16));
+				// IPv4-mapped IPv6 address if 16-bit value (bytes 11 and 12) == 0xFFFF (6th word)
+				if (parts[5] === -1) {
+					str = "::ffff:";
+					str += v4part;
+					return str;
+				}
+				// IPv4-compatible IPv6 address if 16-bit value (bytes 11 and 12) == 0x0000 (6th word)
+				if (parts[5] === 0) {
+					str = "::";
+					//special case IPv6 addresses
+					if (v4part === "0.0.0.0") v4part = ""; // any/unspecified address
+					if (v4part === "0.0.0.1") v4part = "1"; // loopback address
+					str += v4part;
+					return str;
+				}
+			}
+
+			// Handle all other IPv6 addresses
+
+			// first run to find the longest contiguous zero words
+			for (word = 0; word < 8; word++) {
+				if (parts[word] === 0) {
+					if (word - lastzero > 1) {
+						len = 0;
+					}
+					lastzero = word;
+					len++;
+				}
+				if (len > longest) {
+					longest = len;
+					zstart = word - longest + 1;
+				}
+			}
+
+			for (word = 0; word < 8; word++) {
+				if (longest > 1) {
+					// compress contiguous zeros - to produce "::"
+					if (parts[word] === 0 && word >= zstart && word < zstart + longest) {
+						if (word === zstart) {
+							str += ":";
+							if (zstart === 0) str += ":"; //leading zeros case
+						}
+						continue;
+					}
+				}
+				// converts 16-bit words from big-endian to little-endian before converting to hex string
+				str += Number(_ntohs(parts[word] & 0xffff)).toString(16);
+				str += word < 7 ? ":" : "";
+			}
+			return str;
+		};
+
+		var readSockaddr = (sa, salen) => {
+			// family / port offsets are common to both sockaddr_in and sockaddr_in6
+			var family = HEAP16[sa >> 1];
+			var port = _ntohs(HEAPU16[(sa + 2) >> 1]);
+			var addr;
+
+			switch (family) {
+				case 2:
+					if (salen !== 16) {
+						return { errno: 28 };
+					}
+					addr = HEAP32[(sa + 4) >> 2];
+					addr = inetNtop4(addr);
+					break;
+				case 10:
+					if (salen !== 28) {
+						return { errno: 28 };
+					}
+					addr = [
+						HEAP32[(sa + 8) >> 2],
+						HEAP32[(sa + 12) >> 2],
+						HEAP32[(sa + 16) >> 2],
+						HEAP32[(sa + 20) >> 2],
+					];
+					addr = inetNtop6(addr);
+					break;
+				default:
+					return { errno: 5 };
+			}
+
+			return { family: family, addr: addr, port: port };
+		};
+
+		var getSocketAddress = (addrp, addrlen) => {
+			var info = readSockaddr(addrp, addrlen);
+			if (info.errno) throw new FS.ErrnoError(info.errno);
+			info.addr = DNS.lookup_addr(info.addr) || info.addr;
+			return info;
+		};
+		function ___syscall_bind(fd, addr, addrlen, d1, d2, d3) {
+			try {
+				var sock = getSocketFromFD(fd);
+				var info = getSocketAddress(addr, addrlen);
+				sock.sock_ops.bind(sock, info.addr, info.port);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_chdir(path) {
+			try {
+				path = SYSCALLS.getStr(path);
+				FS.chdir(path);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_chmod(path, mode) {
+			try {
+				path = SYSCALLS.getStr(path);
+				FS.chmod(path, mode);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_connect(fd, addr, addrlen, d1, d2, d3) {
+			try {
+				var sock = getSocketFromFD(fd);
+				var info = getSocketAddress(addr, addrlen);
+				sock.sock_ops.connect(sock, info.addr, info.port);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_dup(fd) {
+			try {
+				var old = SYSCALLS.getStreamFromFD(fd);
+				return FS.dupStream(old).fd;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_faccessat(dirfd, path, amode, flags) {
+			try {
+				path = SYSCALLS.getStr(path);
+				assert(flags === 0 || flags == 512);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				if (amode & ~7) {
+					// need a valid mode
+					return -28;
+				}
+				var lookup = FS.lookupPath(path, { follow: true });
+				var node = lookup.node;
+				if (!node) {
+					return -44;
+				}
+				var perms = "";
+				if (amode & 4) perms += "r";
+				if (amode & 2) perms += "w";
+				if (amode & 1) perms += "x";
+				if (
+					perms /* otherwise, they've just passed F_OK */ &&
+					FS.nodePermissions(node, perms)
+				) {
+					return -2;
+				}
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_fchownat(dirfd, path, owner, group, flags) {
+			try {
+				path = SYSCALLS.getStr(path);
+				var nofollow = flags & 256;
+				flags = flags & ~256;
+				assert(flags === 0);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				(nofollow ? FS.lchown : FS.chown)(path, owner, group);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		/** @suppress {duplicate } */
+		var syscallGetVarargI = () => {
+			assert(SYSCALLS.varargs != undefined);
+			// the `+` prepended here is necessary to convince the JSCompiler that varargs is indeed a number.
+			var ret = HEAP32[+SYSCALLS.varargs >> 2];
+			SYSCALLS.varargs += 4;
+			return ret;
+		};
+		var syscallGetVarargP = syscallGetVarargI;
+
+		function ___syscall_fcntl64(fd, cmd, varargs) {
+			SYSCALLS.varargs = varargs;
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				switch (cmd) {
+					case 0: {
+						var arg = syscallGetVarargI();
+						if (arg < 0) {
+							return -28;
+						}
+						while (FS.streams[arg]) {
+							arg++;
+						}
+						var newStream;
+						newStream = FS.dupStream(stream, arg);
+						return newStream.fd;
+					}
+					case 1:
+					case 2:
+						return 0; // FD_CLOEXEC makes no sense for a single process.
+					case 3:
+						return stream.flags;
+					case 4: {
+						var arg = syscallGetVarargI();
+						stream.flags |= arg;
+						return 0;
+					}
+					case 12: {
+						var arg = syscallGetVarargP();
+						var offset = 0;
+						// We're always unlocked.
+						HEAP16[(arg + offset) >> 1] = 2;
+						return 0;
+					}
+					case 13:
+					case 14:
+						return 0; // Pretend that the locking is successful.
+				}
+				return -28;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_fdatasync(fd) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				return 0; // we can't do anything synchronously; the in-memory FS is already synced to
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_fstat64(fd, buf) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				return SYSCALLS.doStat(FS.stat, stream.path, buf);
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var convertI32PairToI53Checked = (lo, hi) => {
+			assert(lo == lo >>> 0 || lo == (lo | 0)); // lo should either be a i32 or a u32
+			assert(hi === (hi | 0)); // hi should be a i32
+			return (hi + 0x200000) >>> 0 < 0x400001 - !!lo
+				? (lo >>> 0) + hi * 4294967296
+				: NaN;
+		};
+		function ___syscall_ftruncate64(fd, length_low, length_high) {
+			var length = convertI32PairToI53Checked(length_low, length_high);
+
+			try {
+				if (isNaN(length)) return 61;
+				FS.ftruncate(fd, length);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var stringToUTF8 = (str, outPtr, maxBytesToWrite) => {
+			assert(
+				typeof maxBytesToWrite == "number",
+				"stringToUTF8(str, outPtr, maxBytesToWrite) is missing the third parameter that specifies the length of the output buffer!",
+			);
+			return stringToUTF8Array(str, HEAPU8, outPtr, maxBytesToWrite);
+		};
+		function ___syscall_getcwd(buf, size) {
+			try {
+				if (size === 0) return -28;
+				var cwd = FS.cwd();
+				var cwdLengthInBytes = lengthBytesUTF8(cwd) + 1;
+				if (size < cwdLengthInBytes) return -68;
+				stringToUTF8(cwd, buf, size);
+				return cwdLengthInBytes;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_getdents64(fd, dirp, count) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				stream.getdents ||= FS.readdir(stream.path);
+
+				var struct_size = 280;
+				var pos = 0;
+				var off = FS.llseek(stream, 0, 1);
+
+				var startIdx = Math.floor(off / struct_size);
+				var endIdx = Math.min(
+					stream.getdents.length,
+					startIdx + Math.floor(count / struct_size),
+				);
+				for (var idx = startIdx; idx < endIdx; idx++) {
+					var id;
+					var type;
+					var name = stream.getdents[idx];
+					if (name === ".") {
+						id = stream.node.id;
+						type = 4; // DT_DIR
+					} else if (name === "..") {
+						var lookup = FS.lookupPath(stream.path, { parent: true });
+						id = lookup.node.id;
+						type = 4; // DT_DIR
+					} else {
+						var child;
+						try {
+							child = FS.lookupNode(stream.node, name);
+						} catch (e) {
+							// If the entry is not a directory, file, or symlink, nodefs
+							// lookupNode will raise EINVAL. Skip these and continue.
+							if (e?.errno === 28) {
+								continue;
+							}
+							throw e;
+						}
+						id = child.id;
+						type = FS.isChrdev(child.mode)
+							? 2
+							: // DT_CHR, character device.
+								FS.isDir(child.mode)
+								? 4
+								: // DT_DIR, directory.
+									FS.isLink(child.mode)
+									? 10
+									: // DT_LNK, symbolic link.
+										8; // DT_REG, regular file.
+					}
+					assert(id);
+					(tempI64 = [
+						id >>> 0,
+						((tempDouble = id),
+						+Math.abs(tempDouble) >= 1.0
+							? tempDouble > 0.0
+								? +Math.floor(tempDouble / 4294967296.0) >>> 0
+								: ~~+Math.ceil(
+										(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+									) >>> 0
+							: 0),
+					]),
+						(HEAP32[(dirp + pos) >> 2] = tempI64[0]),
+						(HEAP32[(dirp + pos + 4) >> 2] = tempI64[1]);
+					(tempI64 = [
+						((idx + 1) * struct_size) >>> 0,
+						((tempDouble = (idx + 1) * struct_size),
+						+Math.abs(tempDouble) >= 1.0
+							? tempDouble > 0.0
+								? +Math.floor(tempDouble / 4294967296.0) >>> 0
+								: ~~+Math.ceil(
+										(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+									) >>> 0
+							: 0),
+					]),
+						(HEAP32[(dirp + pos + 8) >> 2] = tempI64[0]),
+						(HEAP32[(dirp + pos + 12) >> 2] = tempI64[1]);
+					HEAP16[(dirp + pos + 16) >> 1] = 280;
+					HEAP8[dirp + pos + 18] = type;
+					stringToUTF8(name, dirp + pos + 19, 256);
+					pos += struct_size;
+				}
+				FS.llseek(stream, idx * struct_size, 0);
+				return pos;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_getpeername(fd, addr, addrlen, d1, d2, d3) {
+			try {
+				var sock = getSocketFromFD(fd);
+				if (!sock.daddr) {
+					return -53; // The socket is not connected.
+				}
+				var errno = writeSockaddr(
+					addr,
+					sock.family,
+					DNS.lookup_name(sock.daddr),
+					sock.dport,
+					addrlen,
+				);
+				assert(!errno);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_getsockname(fd, addr, addrlen, d1, d2, d3) {
+			try {
+				var sock = getSocketFromFD(fd);
+				// TODO: sock.saddr should never be undefined, see TODO in websocket_sock_ops.getname
+				var errno = writeSockaddr(
+					addr,
+					sock.family,
+					DNS.lookup_name(sock.saddr || "0.0.0.0"),
+					sock.sport,
+					addrlen,
+				);
+				assert(!errno);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_getsockopt(fd, level, optname, optval, optlen, d1) {
+			try {
+				var sock = getSocketFromFD(fd);
+				// Minimal getsockopt aimed at resolving https://github.com/emscripten-core/emscripten/issues/2211
+				// so only supports SOL_SOCKET with SO_ERROR.
+				if (level === 1) {
+					if (optname === 4) {
+						HEAP32[optval >> 2] = sock.error;
+						HEAP32[optlen >> 2] = 4;
+						sock.error = null; // Clear the error (The SO_ERROR option obtains and then clears this field).
+						return 0;
+					}
+				}
+				return -50; // The option is unknown at the level indicated.
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_ioctl(fd, op, varargs) {
+			SYSCALLS.varargs = varargs;
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				switch (op) {
+					case 21509: {
+						if (!stream.tty) return -59;
+						return 0;
+					}
+					case 21505: {
+						if (!stream.tty) return -59;
+						if (stream.tty.ops.ioctl_tcgets) {
+							var termios = stream.tty.ops.ioctl_tcgets(stream);
+							var argp = syscallGetVarargP();
+							HEAP32[argp >> 2] = termios.c_iflag || 0;
+							HEAP32[(argp + 4) >> 2] = termios.c_oflag || 0;
+							HEAP32[(argp + 8) >> 2] = termios.c_cflag || 0;
+							HEAP32[(argp + 12) >> 2] = termios.c_lflag || 0;
+							for (var i = 0; i < 32; i++) {
+								HEAP8[argp + i + 17] = termios.c_cc[i] || 0;
+							}
+							return 0;
+						}
+						return 0;
+					}
+					case 21510:
+					case 21511:
+					case 21512: {
+						if (!stream.tty) return -59;
+						return 0; // no-op, not actually adjusting terminal settings
+					}
+					case 21506:
+					case 21507:
+					case 21508: {
+						if (!stream.tty) return -59;
+						if (stream.tty.ops.ioctl_tcsets) {
+							var argp = syscallGetVarargP();
+							var c_iflag = HEAP32[argp >> 2];
+							var c_oflag = HEAP32[(argp + 4) >> 2];
+							var c_cflag = HEAP32[(argp + 8) >> 2];
+							var c_lflag = HEAP32[(argp + 12) >> 2];
+							var c_cc = [];
+							for (var i = 0; i < 32; i++) {
+								c_cc.push(HEAP8[argp + i + 17]);
+							}
+							return stream.tty.ops.ioctl_tcsets(stream.tty, op, {
+								c_iflag,
+								c_oflag,
+								c_cflag,
+								c_lflag,
+								c_cc,
+							});
+						}
+						return 0; // no-op, not actually adjusting terminal settings
+					}
+					case 21519: {
+						if (!stream.tty) return -59;
+						var argp = syscallGetVarargP();
+						HEAP32[argp >> 2] = 0;
+						return 0;
+					}
+					case 21520: {
+						if (!stream.tty) return -59;
+						return -28; // not supported
+					}
+					case 21531: {
+						var argp = syscallGetVarargP();
+						return FS.ioctl(stream, op, argp);
+					}
+					case 21523: {
+						// TODO: in theory we should write to the winsize struct that gets
+						// passed in, but for now musl doesn't read anything on it
+						if (!stream.tty) return -59;
+						if (stream.tty.ops.ioctl_tiocgwinsz) {
+							var winsize = stream.tty.ops.ioctl_tiocgwinsz(stream.tty);
+							var argp = syscallGetVarargP();
+							HEAP16[argp >> 1] = winsize[0];
+							HEAP16[(argp + 2) >> 1] = winsize[1];
+						}
+						return 0;
+					}
+					case 21524: {
+						// TODO: technically, this ioctl call should change the window size.
+						// but, since emscripten doesn't have any concept of a terminal window
+						// yet, we'll just silently throw it away as we do TIOCGWINSZ
+						if (!stream.tty) return -59;
+						return 0;
+					}
+					case 21515: {
+						if (!stream.tty) return -59;
+						return 0;
+					}
+					default:
+						return -28; // not supported
+				}
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_listen(fd, backlog) {
+			try {
+				var sock = getSocketFromFD(fd);
+				sock.sock_ops.listen(sock, backlog);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_lstat64(path, buf) {
+			try {
+				path = SYSCALLS.getStr(path);
+				return SYSCALLS.doStat(FS.lstat, path, buf);
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_mkdirat(dirfd, path, mode) {
+			try {
+				path = SYSCALLS.getStr(path);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				FS.mkdir(path, mode, 0);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_newfstatat(dirfd, path, buf, flags) {
+			try {
+				path = SYSCALLS.getStr(path);
+				var nofollow = flags & 256;
+				var allowEmpty = flags & 4096;
+				flags = flags & ~6400;
+				assert(!flags, `unknown flags in __syscall_newfstatat: ${flags}`);
+				path = SYSCALLS.calculateAt(dirfd, path, allowEmpty);
+				return SYSCALLS.doStat(nofollow ? FS.lstat : FS.stat, path, buf);
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_openat(dirfd, path, flags, varargs) {
+			SYSCALLS.varargs = varargs;
+			try {
+				path = SYSCALLS.getStr(path);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				var mode = varargs ? syscallGetVarargI() : 0;
+				return FS.open(path, flags, mode).fd;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var PIPEFS = {
+			BUCKET_BUFFER_SIZE: 8192,
+			mount(mount) {
+				// Do not pollute the real root directory or its child nodes with pipes
+				// Looks like it is OK to create another pseudo-root node not linked to the FS.root hierarchy this way
+				return FS.createNode(null, "/", 16384 | 0o777, 0);
+			},
+			createPipe() {
+				var pipe = {
+					buckets: [],
+					// refcnt 2 because pipe has a read end and a write end. We need to be
+					// able to read from the read end after write end is closed.
+					refcnt: 2,
+				};
+
+				pipe.buckets.push({
+					buffer: new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),
+					offset: 0,
+					roffset: 0,
+				});
+
+				var rName = PIPEFS.nextname();
+				var wName = PIPEFS.nextname();
+				var rNode = FS.createNode(PIPEFS.root, rName, 4096, 0);
+				var wNode = FS.createNode(PIPEFS.root, wName, 4096, 0);
+
+				rNode.pipe = pipe;
+				wNode.pipe = pipe;
+
+				var readableStream = FS.createStream({
+					path: rName,
+					node: rNode,
+					flags: 0,
+					seekable: false,
+					stream_ops: PIPEFS.stream_ops,
+				});
+				rNode.stream = readableStream;
+
+				var writableStream = FS.createStream({
+					path: wName,
+					node: wNode,
+					flags: 1,
+					seekable: false,
+					stream_ops: PIPEFS.stream_ops,
+				});
+				wNode.stream = writableStream;
+
+				return {
+					readable_fd: readableStream.fd,
+					writable_fd: writableStream.fd,
+				};
+			},
+			stream_ops: {
+				poll(stream) {
+					var pipe = stream.node.pipe;
+
+					if ((stream.flags & 2097155) === 1) {
+						return 256 | 4;
+					}
+					if (pipe.buckets.length > 0) {
+						for (var i = 0; i < pipe.buckets.length; i++) {
+							var bucket = pipe.buckets[i];
+							if (bucket.offset - bucket.roffset > 0) {
+								return 64 | 1;
+							}
+						}
+					}
+
+					return 0;
+				},
+				ioctl(stream, request, varargs) {
+					return 28;
+				},
+				fsync(stream) {
+					return 28;
+				},
+				read(stream, buffer, offset, length, position /* ignored */) {
+					var pipe = stream.node.pipe;
+					var currentLength = 0;
+
+					for (var i = 0; i < pipe.buckets.length; i++) {
+						var bucket = pipe.buckets[i];
+						currentLength += bucket.offset - bucket.roffset;
+					}
+
+					assert(buffer instanceof ArrayBuffer || ArrayBuffer.isView(buffer));
+					var data = buffer.subarray(offset, offset + length);
+
+					if (length <= 0) {
+						return 0;
+					}
+					if (currentLength == 0) {
+						// Behave as if the read end is always non-blocking
+						throw new FS.ErrnoError(6);
+					}
+					var toRead = Math.min(currentLength, length);
+
+					var totalRead = toRead;
+					var toRemove = 0;
+
+					for (var i = 0; i < pipe.buckets.length; i++) {
+						var currBucket = pipe.buckets[i];
+						var bucketSize = currBucket.offset - currBucket.roffset;
+
+						if (toRead <= bucketSize) {
+							var tmpSlice = currBucket.buffer.subarray(
+								currBucket.roffset,
+								currBucket.offset,
+							);
+							if (toRead < bucketSize) {
+								tmpSlice = tmpSlice.subarray(0, toRead);
+								currBucket.roffset += toRead;
+							} else {
+								toRemove++;
+							}
+							data.set(tmpSlice);
+							break;
+						} else {
+							var tmpSlice = currBucket.buffer.subarray(
+								currBucket.roffset,
+								currBucket.offset,
+							);
+							data.set(tmpSlice);
+							data = data.subarray(tmpSlice.byteLength);
+							toRead -= tmpSlice.byteLength;
+							toRemove++;
+						}
+					}
+
+					if (toRemove && toRemove == pipe.buckets.length) {
+						// Do not generate excessive garbage in use cases such as
+						// write several bytes, read everything, write several bytes, read everything...
+						toRemove--;
+						pipe.buckets[toRemove].offset = 0;
+						pipe.buckets[toRemove].roffset = 0;
+					}
+
+					pipe.buckets.splice(0, toRemove);
+
+					return totalRead;
+				},
+				write(stream, buffer, offset, length, position /* ignored */) {
+					var pipe = stream.node.pipe;
+
+					assert(buffer instanceof ArrayBuffer || ArrayBuffer.isView(buffer));
+					var data = buffer.subarray(offset, offset + length);
+
+					var dataLen = data.byteLength;
+					if (dataLen <= 0) {
+						return 0;
+					}
+
+					var currBucket = null;
+
+					if (pipe.buckets.length == 0) {
+						currBucket = {
+							buffer: new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),
+							offset: 0,
+							roffset: 0,
+						};
+						pipe.buckets.push(currBucket);
+					} else {
+						currBucket = pipe.buckets[pipe.buckets.length - 1];
+					}
+
+					assert(currBucket.offset <= PIPEFS.BUCKET_BUFFER_SIZE);
+
+					var freeBytesInCurrBuffer =
+						PIPEFS.BUCKET_BUFFER_SIZE - currBucket.offset;
+					if (freeBytesInCurrBuffer >= dataLen) {
+						currBucket.buffer.set(data, currBucket.offset);
+						currBucket.offset += dataLen;
+						return dataLen;
+					} else if (freeBytesInCurrBuffer > 0) {
+						currBucket.buffer.set(
+							data.subarray(0, freeBytesInCurrBuffer),
+							currBucket.offset,
+						);
+						currBucket.offset += freeBytesInCurrBuffer;
+						data = data.subarray(freeBytesInCurrBuffer, data.byteLength);
+					}
+
+					var numBuckets = (data.byteLength / PIPEFS.BUCKET_BUFFER_SIZE) | 0;
+					var remElements = data.byteLength % PIPEFS.BUCKET_BUFFER_SIZE;
+
+					for (var i = 0; i < numBuckets; i++) {
+						var newBucket = {
+							buffer: new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),
+							offset: PIPEFS.BUCKET_BUFFER_SIZE,
+							roffset: 0,
+						};
+						pipe.buckets.push(newBucket);
+						newBucket.buffer.set(data.subarray(0, PIPEFS.BUCKET_BUFFER_SIZE));
+						data = data.subarray(PIPEFS.BUCKET_BUFFER_SIZE, data.byteLength);
+					}
+
+					if (remElements > 0) {
+						var newBucket = {
+							buffer: new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),
+							offset: data.byteLength,
+							roffset: 0,
+						};
+						pipe.buckets.push(newBucket);
+						newBucket.buffer.set(data);
+					}
+
+					return dataLen;
+				},
+				close(stream) {
+					var pipe = stream.node.pipe;
+					pipe.refcnt--;
+					if (pipe.refcnt === 0) {
+						pipe.buckets = null;
+					}
+				},
+			},
+			nextname() {
+				if (!PIPEFS.nextname.current) {
+					PIPEFS.nextname.current = 0;
+				}
+				return "pipe[" + PIPEFS.nextname.current++ + "]";
+			},
+		};
+		function ___syscall_pipe(fdPtr) {
+			try {
+				if (fdPtr == 0) {
+					throw new FS.ErrnoError(21);
+				}
+
+				var res = PIPEFS.createPipe();
+
+				HEAP32[fdPtr >> 2] = res.readable_fd;
+				HEAP32[(fdPtr + 4) >> 2] = res.writable_fd;
+
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_poll(fds, nfds, timeout) {
+			try {
+				var nonzero = 0;
+				for (var i = 0; i < nfds; i++) {
+					var pollfd = fds + 8 * i;
+					var fd = HEAP32[pollfd >> 2];
+					var events = HEAP16[(pollfd + 4) >> 1];
+					var mask = 32;
+					var stream = FS.getStream(fd);
+					if (stream) {
+						mask = SYSCALLS.DEFAULT_POLLMASK;
+						if (stream.stream_ops.poll) {
+							mask = stream.stream_ops.poll(stream, -1);
+						}
+					}
+					mask &= events | 8 | 16;
+					if (mask) nonzero++;
+					HEAP16[(pollfd + 6) >> 1] = mask;
+				}
+				return nonzero;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_readlinkat(dirfd, path, buf, bufsize) {
+			try {
+				path = SYSCALLS.getStr(path);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				if (bufsize <= 0) return -28;
+				var ret = FS.readlink(path);
+
+				var len = Math.min(bufsize, lengthBytesUTF8(ret));
+				var endChar = HEAP8[buf + len];
+				stringToUTF8(ret, buf, bufsize + 1);
+				// readlink is one of the rare functions that write out a C string, but does never append a null to the output buffer(!)
+				// stringToUTF8() always appends a null byte, so restore the character under the null byte after the write.
+				HEAP8[buf + len] = endChar;
+				return len;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_recvfrom(fd, buf, len, flags, addr, addrlen) {
+			try {
+				var sock = getSocketFromFD(fd);
+				var msg = sock.sock_ops.recvmsg(sock, len);
+				if (!msg) return 0; // socket is closed
+				if (addr) {
+					var errno = writeSockaddr(
+						addr,
+						sock.family,
+						DNS.lookup_name(msg.addr),
+						msg.port,
+						addrlen,
+					);
+					assert(!errno);
+				}
+				HEAPU8.set(msg.buffer, buf);
+				return msg.buffer.byteLength;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_renameat(olddirfd, oldpath, newdirfd, newpath) {
+			try {
+				oldpath = SYSCALLS.getStr(oldpath);
+				newpath = SYSCALLS.getStr(newpath);
+				oldpath = SYSCALLS.calculateAt(olddirfd, oldpath);
+				newpath = SYSCALLS.calculateAt(newdirfd, newpath);
+				FS.rename(oldpath, newpath);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_rmdir(path) {
+			try {
+				path = SYSCALLS.getStr(path);
+				FS.rmdir(path);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_sendto(fd, message, length, flags, addr, addr_len) {
+			try {
+				var sock = getSocketFromFD(fd);
+				if (!addr) {
+					// send, no address provided
+					return FS.write(sock.stream, HEAP8, message, length);
+				}
+				var dest = getSocketAddress(addr, addr_len);
+				// sendto an address
+				return sock.sock_ops.sendmsg(
+					sock,
+					HEAP8,
+					message,
+					length,
+					dest.addr,
+					dest.port,
+				);
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_socket(domain, type, protocol) {
+			try {
+				var sock = SOCKFS.createSocket(domain, type, protocol);
+				assert(sock.stream.fd < 64); // XXX ? select() assumes socket fd values are in 0..63
+				return sock.stream.fd;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_stat64(path, buf) {
+			try {
+				path = SYSCALLS.getStr(path);
+				return SYSCALLS.doStat(FS.stat, path, buf);
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_statfs64(path, size, buf) {
+			try {
+				assert(size === 64);
+				var stats = FS.statfs(SYSCALLS.getStr(path));
+				HEAP32[(buf + 4) >> 2] = stats.bsize;
+				HEAP32[(buf + 40) >> 2] = stats.bsize;
+				HEAP32[(buf + 8) >> 2] = stats.blocks;
+				HEAP32[(buf + 12) >> 2] = stats.bfree;
+				HEAP32[(buf + 16) >> 2] = stats.bavail;
+				HEAP32[(buf + 20) >> 2] = stats.files;
+				HEAP32[(buf + 24) >> 2] = stats.ffree;
+				HEAP32[(buf + 28) >> 2] = stats.fsid;
+				HEAP32[(buf + 44) >> 2] = stats.flags; // ST_NOSUID
+				HEAP32[(buf + 36) >> 2] = stats.namelen;
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_symlinkat(target, dirfd, linkpath) {
+			try {
+				target = SYSCALLS.getStr(target);
+				linkpath = SYSCALLS.getStr(linkpath);
+				linkpath = SYSCALLS.calculateAt(dirfd, linkpath);
+				FS.symlink(target, linkpath);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function ___syscall_unlinkat(dirfd, path, flags) {
+			try {
+				path = SYSCALLS.getStr(path);
+				path = SYSCALLS.calculateAt(dirfd, path);
+				if (flags === 0) {
+					FS.unlink(path);
+				} else if (flags === 512) {
+					FS.rmdir(path);
+				} else {
+					abort("Invalid flags passed to unlinkat");
+				}
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var readI53FromI64 = (ptr) => {
+			return HEAPU32[ptr >> 2] + HEAP32[(ptr + 4) >> 2] * 4294967296;
+		};
+
+		function ___syscall_utimensat(dirfd, path, times, flags) {
+			try {
+				path = SYSCALLS.getStr(path);
+				assert(flags === 0);
+				path = SYSCALLS.calculateAt(dirfd, path, true);
+				var now = Date.now(),
+					atime,
+					mtime;
+				if (!times) {
+					atime = now;
+					mtime = now;
+				} else {
+					var seconds = readI53FromI64(times);
+					var nanoseconds = HEAP32[(times + 8) >> 2];
+					if (nanoseconds == 1073741823) {
+						atime = now;
+					} else if (nanoseconds == 1073741822) {
+						atime = null;
+					} else {
+						atime = seconds * 1000 + nanoseconds / (1000 * 1000);
+					}
+					times += 16;
+					seconds = readI53FromI64(times);
+					nanoseconds = HEAP32[(times + 8) >> 2];
+					if (nanoseconds == 1073741823) {
+						mtime = now;
+					} else if (nanoseconds == 1073741822) {
+						mtime = null;
+					} else {
+						mtime = seconds * 1000 + nanoseconds / (1000 * 1000);
+					}
+				}
+				// null here means UTIME_OMIT was passed. If both were set to UTIME_OMIT then
+				// we can skip the call completely.
+				if ((mtime ?? atime) !== null) {
+					FS.utime(path, atime, mtime);
+				}
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var __abort_js = () => abort("native code called abort()");
+
+		var __emscripten_lookup_name = (name) => {
+			// uint32_t _emscripten_lookup_name(const char *name);
+			var nameString = UTF8ToString(name);
+			return inetPton4(DNS.lookup_name(nameString));
+		};
+
+		var __emscripten_memcpy_js = (dest, src, num) =>
+			HEAPU8.copyWithin(dest, src, src + num);
+
+		var runtimeKeepaliveCounter = 0;
+		var __emscripten_runtime_keepalive_clear = () => {
+			noExitRuntime = false;
+			runtimeKeepaliveCounter = 0;
+		};
+
+		var __emscripten_throw_longjmp = () => {
+			throw Infinity;
+		};
+
+		function __gmtime_js(time_low, time_high, tmPtr) {
+			var time = convertI32PairToI53Checked(time_low, time_high);
+
+			var date = new Date(time * 1000);
+			HEAP32[tmPtr >> 2] = date.getUTCSeconds();
+			HEAP32[(tmPtr + 4) >> 2] = date.getUTCMinutes();
+			HEAP32[(tmPtr + 8) >> 2] = date.getUTCHours();
+			HEAP32[(tmPtr + 12) >> 2] = date.getUTCDate();
+			HEAP32[(tmPtr + 16) >> 2] = date.getUTCMonth();
+			HEAP32[(tmPtr + 20) >> 2] = date.getUTCFullYear() - 1900;
+			HEAP32[(tmPtr + 24) >> 2] = date.getUTCDay();
+			var start = Date.UTC(date.getUTCFullYear(), 0, 1, 0, 0, 0, 0);
+			var yday = ((date.getTime() - start) / (1000 * 60 * 60 * 24)) | 0;
+			HEAP32[(tmPtr + 28) >> 2] = yday;
+		}
+
+		var isLeapYear = (year) =>
+			year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0);
+
+		var MONTH_DAYS_LEAP_CUMULATIVE = [
+			0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335,
+		];
+
+		var MONTH_DAYS_REGULAR_CUMULATIVE = [
+			0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334,
+		];
+		var ydayFromDate = (date) => {
+			var leap = isLeapYear(date.getFullYear());
+			var monthDaysCumulative = leap
+				? MONTH_DAYS_LEAP_CUMULATIVE
+				: MONTH_DAYS_REGULAR_CUMULATIVE;
+			var yday = monthDaysCumulative[date.getMonth()] + date.getDate() - 1; // -1 since it's days since Jan 1
+
+			return yday;
+		};
+
+		function __localtime_js(time_low, time_high, tmPtr) {
+			var time = convertI32PairToI53Checked(time_low, time_high);
+
+			var date = new Date(time * 1000);
+			HEAP32[tmPtr >> 2] = date.getSeconds();
+			HEAP32[(tmPtr + 4) >> 2] = date.getMinutes();
+			HEAP32[(tmPtr + 8) >> 2] = date.getHours();
+			HEAP32[(tmPtr + 12) >> 2] = date.getDate();
+			HEAP32[(tmPtr + 16) >> 2] = date.getMonth();
+			HEAP32[(tmPtr + 20) >> 2] = date.getFullYear() - 1900;
+			HEAP32[(tmPtr + 24) >> 2] = date.getDay();
+
+			var yday = ydayFromDate(date) | 0;
+			HEAP32[(tmPtr + 28) >> 2] = yday;
+			HEAP32[(tmPtr + 36) >> 2] = -(date.getTimezoneOffset() * 60);
+
+			// Attention: DST is in December in South, and some regions don't have DST at all.
+			var start = new Date(date.getFullYear(), 0, 1);
+			var summerOffset = new Date(date.getFullYear(), 6, 1).getTimezoneOffset();
+			var winterOffset = start.getTimezoneOffset();
+			var dst =
+				(summerOffset != winterOffset &&
+					date.getTimezoneOffset() == Math.min(winterOffset, summerOffset)) | 0;
+			HEAP32[(tmPtr + 32) >> 2] = dst;
+		}
+
+		/** @suppress {duplicate } */
+		var setTempRet0 = (val) => __emscripten_tempret_set(val);
+		var _setTempRet0 = setTempRet0;
+
+		var __mktime_js = function (tmPtr) {
+			var ret = (() => {
+				var date = new Date(
+					HEAP32[(tmPtr + 20) >> 2] + 1900,
+					HEAP32[(tmPtr + 16) >> 2],
+					HEAP32[(tmPtr + 12) >> 2],
+					HEAP32[(tmPtr + 8) >> 2],
+					HEAP32[(tmPtr + 4) >> 2],
+					HEAP32[tmPtr >> 2],
+					0,
+				);
+
+				// There's an ambiguous hour when the time goes back; the tm_isdst field is
+				// used to disambiguate it.  Date() basically guesses, so we fix it up if it
+				// guessed wrong, or fill in tm_isdst with the guess if it's -1.
+				var dst = HEAP32[(tmPtr + 32) >> 2];
+				var guessedOffset = date.getTimezoneOffset();
+				var start = new Date(date.getFullYear(), 0, 1);
+				var summerOffset = new Date(
+					date.getFullYear(),
+					6,
+					1,
+				).getTimezoneOffset();
+				var winterOffset = start.getTimezoneOffset();
+				var dstOffset = Math.min(winterOffset, summerOffset); // DST is in December in South
+				if (dst < 0) {
+					// Attention: some regions don't have DST at all.
+					HEAP32[(tmPtr + 32) >> 2] = Number(
+						summerOffset != winterOffset && dstOffset == guessedOffset,
+					);
+				} else if (dst > 0 != (dstOffset == guessedOffset)) {
+					var nonDstOffset = Math.max(winterOffset, summerOffset);
+					var trueOffset = dst > 0 ? dstOffset : nonDstOffset;
+					// Don't try setMinutes(date.getMinutes() + ...) -- it's messed up.
+					date.setTime(date.getTime() + (trueOffset - guessedOffset) * 60000);
+				}
+
+				HEAP32[(tmPtr + 24) >> 2] = date.getDay();
+				var yday = ydayFromDate(date) | 0;
+				HEAP32[(tmPtr + 28) >> 2] = yday;
+				// To match expected behavior, update fields from date
+				HEAP32[tmPtr >> 2] = date.getSeconds();
+				HEAP32[(tmPtr + 4) >> 2] = date.getMinutes();
+				HEAP32[(tmPtr + 8) >> 2] = date.getHours();
+				HEAP32[(tmPtr + 12) >> 2] = date.getDate();
+				HEAP32[(tmPtr + 16) >> 2] = date.getMonth();
+				HEAP32[(tmPtr + 20) >> 2] = date.getYear();
+
+				var timeMs = date.getTime();
+				if (isNaN(timeMs)) {
+					return -1;
+				}
+				// Return time in microseconds
+				return timeMs / 1000;
+			})();
+			return (
+				setTempRet0(
+					((tempDouble = ret),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				),
+				ret >>> 0
+			);
+		};
+
+		function __mmap_js(
+			len,
+			prot,
+			flags,
+			fd,
+			offset_low,
+			offset_high,
+			allocated,
+			addr,
+		) {
+			var offset = convertI32PairToI53Checked(offset_low, offset_high);
+
+			try {
+				if (isNaN(offset)) return 61;
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				var res = FS.mmap(stream, len, offset, prot, flags);
+				var ptr = res.ptr;
+				HEAP32[allocated >> 2] = res.allocated;
+				HEAPU32[addr >> 2] = ptr;
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		function __munmap_js(addr, len, prot, flags, fd, offset_low, offset_high) {
+			var offset = convertI32PairToI53Checked(offset_low, offset_high);
+
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				if (prot & 2) {
+					SYSCALLS.doMsync(addr, stream, len, flags, offset);
+				}
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return -e.errno;
+			}
+		}
+
+		var timers = {};
+
+		var handleException = (e) => {
+			// Certain exception types we do not treat as errors since they are used for
+			// internal control flow.
+			// 1. ExitStatus, which is thrown by exit()
+			// 2. "unwind", which is thrown by emscripten_unwind_to_js_event_loop() and others
+			//    that wish to return to JS event loop.
+			if (e instanceof ExitStatus || e == "unwind") {
+				return EXITSTATUS;
+			}
+			checkStackCookie();
+			if (e instanceof WebAssembly.RuntimeError) {
+				if (_emscripten_stack_get_current() <= 0) {
+					err(
+						"Stack overflow detected.  You can try increasing -sSTACK_SIZE (currently set to 65536)",
+					);
+				}
+			}
+			quit_(1, e);
+		};
+
+		var keepRuntimeAlive = () => noExitRuntime || runtimeKeepaliveCounter > 0;
+		var _proc_exit = (code) => {
+			EXITSTATUS = code;
+			if (!keepRuntimeAlive()) {
+				Module["onExit"]?.(code);
+				ABORT = true;
+			}
+			quit_(code, new ExitStatus(code));
+		};
+
+		/** @suppress {duplicate } */
+		/** @param {boolean|number=} implicit */
+		var exitJS = (status, implicit) => {
+			EXITSTATUS = status;
+
+			checkUnflushedContent();
+
+			// if exit() was called explicitly, warn the user if the runtime isn't actually being shut down
+			if (keepRuntimeAlive() && !implicit) {
+				var msg = `program exited (with status: ${status}), but keepRuntimeAlive() is set (counter=${runtimeKeepaliveCounter}) due to an async operation, so halting execution but not exiting the runtime or preventing further async execution (you can use emscripten_force_exit, if you want to force a true shutdown)`;
+				readyPromiseReject(msg);
+				err(msg);
+			}
+
+			_proc_exit(status);
+		};
+		var _exit = exitJS;
+
+		var maybeExit = () => {
+			if (!keepRuntimeAlive()) {
+				try {
+					_exit(EXITSTATUS);
+				} catch (e) {
+					handleException(e);
+				}
+			}
+		};
+		var callUserCallback = (func) => {
+			if (ABORT) {
+				err(
+					"user callback triggered after runtime exited or application aborted.  Ignoring.",
+				);
+				return;
+			}
+			try {
+				func();
+				maybeExit();
+			} catch (e) {
+				handleException(e);
+			}
+		};
+
+		var _emscripten_get_now = () => performance.now();
+		var __setitimer_js = (which, timeout_ms) => {
+			// First, clear any existing timer.
+			if (timers[which]) {
+				clearTimeout(timers[which].id);
+				delete timers[which];
+			}
+
+			// A timeout of zero simply cancels the current timeout so we have nothing
+			// more to do.
+			if (!timeout_ms) return 0;
+
+			var id = setTimeout(() => {
+				assert(which in timers);
+				delete timers[which];
+				callUserCallback(() =>
+					__emscripten_timeout(which, _emscripten_get_now()),
+				);
+			}, timeout_ms);
+			timers[which] = { id, timeout_ms };
+			return 0;
+		};
+
+		var __tzset_js = (timezone, daylight, std_name, dst_name) => {
+			// TODO: Use (malleable) environment variables instead of system settings.
+			var currentYear = new Date().getFullYear();
+			var winter = new Date(currentYear, 0, 1);
+			var summer = new Date(currentYear, 6, 1);
+			var winterOffset = winter.getTimezoneOffset();
+			var summerOffset = summer.getTimezoneOffset();
+
+			// Local standard timezone offset. Local standard time is not adjusted for
+			// daylight savings.  This code uses the fact that getTimezoneOffset returns
+			// a greater value during Standard Time versus Daylight Saving Time (DST).
+			// Thus it determines the expected output during Standard Time, and it
+			// compares whether the output of the given date the same (Standard) or less
+			// (DST).
+			var stdTimezoneOffset = Math.max(winterOffset, summerOffset);
+
+			// timezone is specified as seconds west of UTC ("The external variable
+			// `timezone` shall be set to the difference, in seconds, between
+			// Coordinated Universal Time (UTC) and local standard time."), the same
+			// as returned by stdTimezoneOffset.
+			// See http://pubs.opengroup.org/onlinepubs/009695399/functions/tzset.html
+			HEAPU32[timezone >> 2] = stdTimezoneOffset * 60;
+
+			HEAP32[daylight >> 2] = Number(winterOffset != summerOffset);
+
+			var extractZone = (timezoneOffset) => {
+				// Why inverse sign?
+				// Read here https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTimezoneOffset
+				var sign = timezoneOffset >= 0 ? "-" : "+";
+
+				var absOffset = Math.abs(timezoneOffset);
+				var hours = String(Math.floor(absOffset / 60)).padStart(2, "0");
+				var minutes = String(absOffset % 60).padStart(2, "0");
+
+				return `UTC${sign}${hours}${minutes}`;
+			};
+
+			var winterName = extractZone(winterOffset);
+			var summerName = extractZone(summerOffset);
+			assert(winterName);
+			assert(summerName);
+			assert(
+				lengthBytesUTF8(winterName) <= 16,
+				`timezone name truncated to fit in TZNAME_MAX (${winterName})`,
+			);
+			assert(
+				lengthBytesUTF8(summerName) <= 16,
+				`timezone name truncated to fit in TZNAME_MAX (${summerName})`,
+			);
+			if (summerOffset < winterOffset) {
+				// Northern hemisphere
+				stringToUTF8(winterName, std_name, 17);
+				stringToUTF8(summerName, dst_name, 17);
+			} else {
+				stringToUTF8(winterName, dst_name, 17);
+				stringToUTF8(summerName, std_name, 17);
+			}
+		};
+
+		var _emscripten_date_now = () => Date.now();
+
+		var nowIsMonotonic = 1;
+
+		var checkWasiClock = (clock_id) => clock_id >= 0 && clock_id <= 3;
+
+		function _clock_time_get(
+			clk_id,
+			ignored_precision_low,
+			ignored_precision_high,
+			ptime,
+		) {
+			var ignored_precision = convertI32PairToI53Checked(
+				ignored_precision_low,
+				ignored_precision_high,
+			);
+
+			if (!checkWasiClock(clk_id)) {
+				return 28;
+			}
+			var now;
+			// all wasi clocks but realtime are monotonic
+			if (clk_id === 0) {
+				now = _emscripten_date_now();
+			} else if (nowIsMonotonic) {
+				now = _emscripten_get_now();
+			} else {
+				return 52;
+			}
+			// "now" is in ms, and wasi times are in ns.
+			var nsec = Math.round(now * 1000 * 1000);
+			(tempI64 = [
+				nsec >>> 0,
+				((tempDouble = nsec),
+				+Math.abs(tempDouble) >= 1.0
+					? tempDouble > 0.0
+						? +Math.floor(tempDouble / 4294967296.0) >>> 0
+						: ~~+Math.ceil(
+								(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+							) >>> 0
+					: 0),
+			]),
+				(HEAP32[ptime >> 2] = tempI64[0]),
+				(HEAP32[(ptime + 4) >> 2] = tempI64[1]);
+			return 0;
+		}
+
+		var _emscripten_err = (str) => err(UTF8ToString(str));
+
+		var getHeapMax = () => HEAPU8.length;
+		var _emscripten_get_heap_max = () => getHeapMax();
+
+		var abortOnCannotGrowMemory = (requestedSize) => {
+			abort(
+				`Cannot enlarge memory arrays to size ${requestedSize} bytes (OOM). Either (1) compile with -sINITIAL_MEMORY=X with X higher than the current value ${HEAP8.length}, (2) compile with -sALLOW_MEMORY_GROWTH which allows increasing the size at runtime, or (3) if you want malloc to return NULL (0) instead of this abort, compile with -sABORTING_MALLOC=0`,
+			);
+		};
+		var _emscripten_resize_heap = (requestedSize) => {
+			var oldSize = HEAPU8.length;
+			// With CAN_ADDRESS_2GB or MEMORY64, pointers are already unsigned.
+			requestedSize >>>= 0;
+			abortOnCannotGrowMemory(requestedSize);
+		};
+
+		var ENV = {};
+
+		var getExecutableName = () => thisProgram || "./this.program";
+		var getEnvStrings = () => {
+			if (!getEnvStrings.strings) {
+				// Default values.
+				// Browser language detection #8751
+				var lang =
+					(
+						(typeof navigator == "object" &&
+							navigator.languages &&
+							navigator.languages[0]) ||
+						"C"
+					).replace("-", "_") + ".UTF-8";
+				var env = {
+					USER: "web_user",
+					LOGNAME: "web_user",
+					PATH: "/",
+					PWD: "/",
+					HOME: "/home/web_user",
+					LANG: lang,
+					_: getExecutableName(),
+				};
+				// Apply the user-provided values, if any.
+				for (var x in ENV) {
+					// x is a key in ENV; if ENV[x] is undefined, that means it was
+					// explicitly set to be so. We allow user code to do that to
+					// force variables with default values to remain unset.
+					if (ENV[x] === undefined) delete env[x];
+					else env[x] = ENV[x];
+				}
+				var strings = [];
+				for (var x in env) {
+					strings.push(`${x}=${env[x]}`);
+				}
+				getEnvStrings.strings = strings;
+			}
+			return getEnvStrings.strings;
+		};
+
+		var stringToAscii = (str, buffer) => {
+			for (var i = 0; i < str.length; ++i) {
+				assert(str.charCodeAt(i) === (str.charCodeAt(i) & 0xff));
+				HEAP8[buffer++] = str.charCodeAt(i);
+			}
+			// Null-terminate the string
+			HEAP8[buffer] = 0;
+		};
+		var _environ_get = (__environ, environ_buf) => {
+			var bufSize = 0;
+			getEnvStrings().forEach((string, i) => {
+				var ptr = environ_buf + bufSize;
+				HEAPU32[(__environ + i * 4) >> 2] = ptr;
+				stringToAscii(string, ptr);
+				bufSize += string.length + 1;
+			});
+			return 0;
+		};
+
+		var _environ_sizes_get = (penviron_count, penviron_buf_size) => {
+			var strings = getEnvStrings();
+			HEAPU32[penviron_count >> 2] = strings.length;
+			var bufSize = 0;
+			strings.forEach((string) => (bufSize += string.length + 1));
+			HEAPU32[penviron_buf_size >> 2] = bufSize;
+			return 0;
+		};
+
+		function _fd_close(fd) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				FS.close(stream);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		function _fd_fdstat_get(fd, pbuf) {
+			try {
+				var rightsBase = 0;
+				var rightsInheriting = 0;
+				var flags = 0;
+				{
+					var stream = SYSCALLS.getStreamFromFD(fd);
+					// All character devices are terminals (other things a Linux system would
+					// assume is a character device, like the mouse, we have special APIs for).
+					var type = stream.tty
+						? 2
+						: FS.isDir(stream.mode)
+							? 3
+							: FS.isLink(stream.mode)
+								? 7
+								: 4;
+				}
+				HEAP8[pbuf] = type;
+				HEAP16[(pbuf + 2) >> 1] = flags;
+				(tempI64 = [
+					rightsBase >>> 0,
+					((tempDouble = rightsBase),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(pbuf + 8) >> 2] = tempI64[0]),
+					(HEAP32[(pbuf + 12) >> 2] = tempI64[1]);
+				(tempI64 = [
+					rightsInheriting >>> 0,
+					((tempDouble = rightsInheriting),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[(pbuf + 16) >> 2] = tempI64[0]),
+					(HEAP32[(pbuf + 20) >> 2] = tempI64[1]);
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		/** @param {number=} offset */
+		var doReadv = (stream, iov, iovcnt, offset) => {
+			var ret = 0;
+			for (var i = 0; i < iovcnt; i++) {
+				var ptr = HEAPU32[iov >> 2];
+				var len = HEAPU32[(iov + 4) >> 2];
+				iov += 8;
+				var curr = FS.read(stream, HEAP8, ptr, len, offset);
+				if (curr < 0) return -1;
+				ret += curr;
+				if (curr < len) break; // nothing more to read
+				if (typeof offset != "undefined") {
+					offset += curr;
+				}
+			}
+			return ret;
+		};
+
+		function _fd_read(fd, iov, iovcnt, pnum) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				var num = doReadv(stream, iov, iovcnt);
+				HEAPU32[pnum >> 2] = num;
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		function _fd_seek(fd, offset_low, offset_high, whence, newOffset) {
+			var offset = convertI32PairToI53Checked(offset_low, offset_high);
+
+			try {
+				if (isNaN(offset)) return 61;
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				FS.llseek(stream, offset, whence);
+				(tempI64 = [
+					stream.position >>> 0,
+					((tempDouble = stream.position),
+					+Math.abs(tempDouble) >= 1.0
+						? tempDouble > 0.0
+							? +Math.floor(tempDouble / 4294967296.0) >>> 0
+							: ~~+Math.ceil(
+									(tempDouble - +(~~tempDouble >>> 0)) / 4294967296.0,
+								) >>> 0
+						: 0),
+				]),
+					(HEAP32[newOffset >> 2] = tempI64[0]),
+					(HEAP32[(newOffset + 4) >> 2] = tempI64[1]);
+				if (stream.getdents && offset === 0 && whence === 0)
+					stream.getdents = null; // reset readdir state
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		function _fd_sync(fd) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				if (stream.stream_ops?.fsync) {
+					return stream.stream_ops.fsync(stream);
+				}
+				return 0; // we can't do anything synchronously; the in-memory FS is already synced to
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		/** @param {number=} offset */
+		var doWritev = (stream, iov, iovcnt, offset) => {
+			var ret = 0;
+			for (var i = 0; i < iovcnt; i++) {
+				var ptr = HEAPU32[iov >> 2];
+				var len = HEAPU32[(iov + 4) >> 2];
+				iov += 8;
+				var curr = FS.write(stream, HEAP8, ptr, len, offset);
+				if (curr < 0) return -1;
+				ret += curr;
+				if (curr < len) {
+					// No more space to write.
+					break;
+				}
+				if (typeof offset != "undefined") {
+					offset += curr;
+				}
+			}
+			return ret;
+		};
+
+		function _fd_write(fd, iov, iovcnt, pnum) {
+			try {
+				var stream = SYSCALLS.getStreamFromFD(fd);
+				var num = doWritev(stream, iov, iovcnt);
+				HEAPU32[pnum >> 2] = num;
+				return 0;
+			} catch (e) {
+				if (typeof FS == "undefined" || !(e.name === "ErrnoError")) throw e;
+				return e.errno;
+			}
+		}
+
+		var _getaddrinfo = (node, service, hint, out) => {
+			// Note getaddrinfo currently only returns a single addrinfo with ai_next defaulting to NULL. When NULL
+			// hints are specified or ai_family set to AF_UNSPEC or ai_socktype or ai_protocol set to 0 then we
+			// really should provide a linked list of suitable addrinfo values.
+			var addrs = [];
+			var canon = null;
+			var addr = 0;
+			var port = 0;
+			var flags = 0;
+			var family = 0;
+			var type = 0;
+			var proto = 0;
+			var ai, last;
+
+			function allocaddrinfo(family, type, proto, canon, addr, port) {
+				var sa, salen, ai;
+				var errno;
+
+				salen = family === 10 ? 28 : 16;
+				addr = family === 10 ? inetNtop6(addr) : inetNtop4(addr);
+				sa = _malloc(salen);
+				errno = writeSockaddr(sa, family, addr, port);
+				assert(!errno);
+
+				ai = _malloc(32);
+				HEAP32[(ai + 4) >> 2] = family;
+				HEAP32[(ai + 8) >> 2] = type;
+				HEAP32[(ai + 12) >> 2] = proto;
+				HEAPU32[(ai + 24) >> 2] = canon;
+				HEAPU32[(ai + 20) >> 2] = sa;
+				if (family === 10) {
+					HEAP32[(ai + 16) >> 2] = 28;
+				} else {
+					HEAP32[(ai + 16) >> 2] = 16;
+				}
+				HEAP32[(ai + 28) >> 2] = 0;
+
+				return ai;
+			}
+
+			if (hint) {
+				flags = HEAP32[hint >> 2];
+				family = HEAP32[(hint + 4) >> 2];
+				type = HEAP32[(hint + 8) >> 2];
+				proto = HEAP32[(hint + 12) >> 2];
+			}
+			if (type && !proto) {
+				proto = type === 2 ? 17 : 6;
+			}
+			if (!type && proto) {
+				type = proto === 17 ? 2 : 1;
+			}
+
+			// If type or proto are set to zero in hints we should really be returning multiple addrinfo values, but for
+			// now default to a TCP STREAM socket so we can at least return a sensible addrinfo given NULL hints.
+			if (proto === 0) {
+				proto = 6;
+			}
+			if (type === 0) {
+				type = 1;
+			}
+
+			if (!node && !service) {
+				return -2;
+			}
+			if (flags & ~(1 | 2 | 4 | 1024 | 8 | 16 | 32)) {
+				return -1;
+			}
+			if (hint !== 0 && HEAP32[hint >> 2] & 2 && !node) {
+				return -1;
+			}
+			if (flags & 32) {
+				// TODO
+				return -2;
+			}
+			if (type !== 0 && type !== 1 && type !== 2) {
+				return -7;
+			}
+			if (family !== 0 && family !== 2 && family !== 10) {
+				return -6;
+			}
+
+			if (service) {
+				service = UTF8ToString(service);
+				port = parseInt(service, 10);
+
+				if (isNaN(port)) {
+					if (flags & 1024) {
+						return -2;
+					}
+					// TODO support resolving well-known service names from:
+					// http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt
+					return -8;
+				}
+			}
+
+			if (!node) {
+				if (family === 0) {
+					family = 2;
+				}
+				if ((flags & 1) === 0) {
+					if (family === 2) {
+						addr = _htonl(2130706433);
+					} else {
+						addr = [0, 0, 0, _htonl(1)];
+					}
+				}
+				ai = allocaddrinfo(family, type, proto, null, addr, port);
+				HEAPU32[out >> 2] = ai;
+				return 0;
+			}
+
+			//
+			// try as a numeric address
+			//
+			node = UTF8ToString(node);
+			addr = inetPton4(node);
+			if (addr !== null) {
+				// incoming node is a valid ipv4 address
+				if (family === 0 || family === 2) {
+					family = 2;
+				} else if (family === 10 && flags & 8) {
+					addr = [0, 0, _htonl(0xffff), addr];
+					family = 10;
+				} else {
+					return -2;
+				}
+			} else {
+				addr = inetPton6(node);
+				if (addr !== null) {
+					// incoming node is a valid ipv6 address
+					if (family === 0 || family === 10) {
+						family = 10;
+					} else {
+						return -2;
+					}
+				}
+			}
+			if (addr != null) {
+				ai = allocaddrinfo(family, type, proto, node, addr, port);
+				HEAPU32[out >> 2] = ai;
+				return 0;
+			}
+			if (flags & 4) {
+				return -2;
+			}
+
+			//
+			// try as a hostname
+			//
+			// resolve the hostname to a temporary fake address
+			node = DNS.lookup_name(node);
+			addr = inetPton4(node);
+			if (family === 0) {
+				family = 2;
+			} else if (family === 10) {
+				addr = [0, 0, _htonl(0xffff), addr];
+			}
+			ai = allocaddrinfo(family, type, proto, null, addr, port);
+			HEAPU32[out >> 2] = ai;
+			return 0;
+		};
+
+		/** @type {function(...*):?} */
+		function _getcontext() {
+			abort("missing function: getcontext");
+		}
+		_getcontext.stub = true;
+
+		/** @type {function(...*):?} */
+		function _getdtablesize() {
+			abort("missing function: getdtablesize");
+		}
+		_getdtablesize.stub = true;
+
+		var _getnameinfo = (sa, salen, node, nodelen, serv, servlen, flags) => {
+			var info = readSockaddr(sa, salen);
+			if (info.errno) {
+				return -6;
+			}
+			var port = info.port;
+			var addr = info.addr;
+
+			var overflowed = false;
+
+			if (node && nodelen) {
+				var lookup;
+				if (flags & 1 || !(lookup = DNS.lookup_addr(addr))) {
+					if (flags & 8) {
+						return -2;
+					}
+				} else {
+					addr = lookup;
+				}
+				var numBytesWrittenExclNull = stringToUTF8(addr, node, nodelen);
+
+				if (numBytesWrittenExclNull + 1 >= nodelen) {
+					overflowed = true;
+				}
+			}
+
+			if (serv && servlen) {
+				port = "" + port;
+				var numBytesWrittenExclNull = stringToUTF8(port, serv, servlen);
+
+				if (numBytesWrittenExclNull + 1 >= servlen) {
+					overflowed = true;
+				}
+			}
+
+			if (overflowed) {
+				// Note: even when we overflow, getnameinfo() is specced to write out the truncated results.
+				return -12;
+			}
+
+			return 0;
+		};
+
+		var Protocols = {
+			list: [],
+			map: {},
+		};
+
+		var _setprotoent = (stayopen) => {
+			// void setprotoent(int stayopen);
+
+			// Allocate and populate a protoent structure given a name, protocol number and array of aliases
+			function allocprotoent(name, proto, aliases) {
+				// write name into buffer
+				var nameBuf = _malloc(name.length + 1);
+				stringToAscii(name, nameBuf);
+
+				// write aliases into buffer
+				var j = 0;
+				var length = aliases.length;
+				var aliasListBuf = _malloc((length + 1) * 4); // Use length + 1 so we have space for the terminating NULL ptr.
+
+				for (var i = 0; i < length; i++, j += 4) {
+					var alias = aliases[i];
+					var aliasBuf = _malloc(alias.length + 1);
+					stringToAscii(alias, aliasBuf);
+					HEAPU32[(aliasListBuf + j) >> 2] = aliasBuf;
+				}
+				HEAPU32[(aliasListBuf + j) >> 2] = 0; // Terminating NULL pointer.
+
+				// generate protoent
+				var pe = _malloc(12);
+				HEAPU32[pe >> 2] = nameBuf;
+				HEAPU32[(pe + 4) >> 2] = aliasListBuf;
+				HEAP32[(pe + 8) >> 2] = proto;
+				return pe;
+			}
+
+			// Populate the protocol 'database'. The entries are limited to tcp and udp, though it is fairly trivial
+			// to add extra entries from /etc/protocols if desired - though not sure if that'd actually be useful.
+			var list = Protocols.list;
+			var map = Protocols.map;
+			if (list.length === 0) {
+				var entry = allocprotoent("tcp", 6, ["TCP"]);
+				list.push(entry);
+				map["tcp"] = map["6"] = entry;
+				entry = allocprotoent("udp", 17, ["UDP"]);
+				list.push(entry);
+				map["udp"] = map["17"] = entry;
+			}
+
+			_setprotoent.index = 0;
+		};
+
+		var _getprotobyname = (name) => {
+			// struct protoent *getprotobyname(const char *);
+			name = UTF8ToString(name);
+			_setprotoent(true);
+			var result = Protocols.map[name];
+			return result;
+		};
+
+		var _getprotobynumber = (number) => {
+			// struct protoent *getprotobynumber(int proto);
+			_setprotoent(true);
+			var result = Protocols.map[number];
+			return result;
+		};
+
+		/** @type {function(...*):?} */
+		function _makecontext() {
+			abort("missing function: makecontext");
+		}
+		_makecontext.stub = true;
+
+		/** @type {function(...*):?} */
+		function _posix_spawnp() {
+			abort("missing function: posix_spawnp");
+		}
+		_posix_spawnp.stub = true;
+
+		var arraySum = (array, index) => {
+			var sum = 0;
+			for (var i = 0; i <= index; sum += array[i++]) {
+				// no-op
+			}
+			return sum;
+		};
+
+		var MONTH_DAYS_LEAP = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+
+		var MONTH_DAYS_REGULAR = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+		var addDays = (date, days) => {
+			var newDate = new Date(date.getTime());
+			while (days > 0) {
+				var leap = isLeapYear(newDate.getFullYear());
+				var currentMonth = newDate.getMonth();
+				var daysInCurrentMonth = (leap ? MONTH_DAYS_LEAP : MONTH_DAYS_REGULAR)[
+					currentMonth
+				];
+
+				if (days > daysInCurrentMonth - newDate.getDate()) {
+					// we spill over to next month
+					days -= daysInCurrentMonth - newDate.getDate() + 1;
+					newDate.setDate(1);
+					if (currentMonth < 11) {
+						newDate.setMonth(currentMonth + 1);
+					} else {
+						newDate.setMonth(0);
+						newDate.setFullYear(newDate.getFullYear() + 1);
+					}
+				} else {
+					// we stay in current month
+					newDate.setDate(newDate.getDate() + days);
+					return newDate;
+				}
+			}
+
+			return newDate;
+		};
+
+		var _strptime = (buf, format, tm) => {
+			// char *strptime(const char *restrict buf, const char *restrict format, struct tm *restrict tm);
+			// http://pubs.opengroup.org/onlinepubs/009695399/functions/strptime.html
+			var pattern = UTF8ToString(format);
+
+			// escape special characters
+			// TODO: not sure we really need to escape all of these in JS regexps
+			var SPECIAL_CHARS = "\\!@#$^&*()+=-[]/{}|:<>?,.";
+			for (var i = 0, ii = SPECIAL_CHARS.length; i < ii; ++i) {
+				pattern = pattern.replace(
+					new RegExp("\\" + SPECIAL_CHARS[i], "g"),
+					"\\" + SPECIAL_CHARS[i],
+				);
+			}
+
+			// reduce number of matchers
+			var EQUIVALENT_MATCHERS = {
+				A: "%a",
+				B: "%b",
+				c: "%a %b %d %H:%M:%S %Y",
+				D: "%m\\/%d\\/%y",
+				e: "%d",
+				F: "%Y-%m-%d",
+				h: "%b",
+				R: "%H\\:%M",
+				r: "%I\\:%M\\:%S\\s%p",
+				T: "%H\\:%M\\:%S",
+				x: "%m\\/%d\\/(?:%y|%Y)",
+				X: "%H\\:%M\\:%S",
+			};
+			// TODO: take care of locale
+
+			var DATE_PATTERNS = {
+				/* weekday name */ a: "(?:Sun(?:day)?)|(?:Mon(?:day)?)|(?:Tue(?:sday)?)|(?:Wed(?:nesday)?)|(?:Thu(?:rsday)?)|(?:Fri(?:day)?)|(?:Sat(?:urday)?)",
+				/* month name */ b: "(?:Jan(?:uary)?)|(?:Feb(?:ruary)?)|(?:Mar(?:ch)?)|(?:Apr(?:il)?)|May|(?:Jun(?:e)?)|(?:Jul(?:y)?)|(?:Aug(?:ust)?)|(?:Sep(?:tember)?)|(?:Oct(?:ober)?)|(?:Nov(?:ember)?)|(?:Dec(?:ember)?)",
+				/* century */ C: "\\d\\d",
+				/* day of month */ d: "0[1-9]|[1-9](?!\\d)|1\\d|2\\d|30|31",
+				/* hour (24hr) */ H: "\\d(?!\\d)|[0,1]\\d|20|21|22|23",
+				/* hour (12hr) */ I: "\\d(?!\\d)|0\\d|10|11|12",
+				/* day of year */ j: "00[1-9]|0?[1-9](?!\\d)|0?[1-9]\\d(?!\\d)|[1,2]\\d\\d|3[0-6]\\d",
+				/* month */ m: "0[1-9]|[1-9](?!\\d)|10|11|12",
+				/* minutes */ M: "0\\d|\\d(?!\\d)|[1-5]\\d",
+				/* whitespace */ n: " ",
+				/* AM/PM */ p: "AM|am|PM|pm|A\\.M\\.|a\\.m\\.|P\\.M\\.|p\\.m\\.",
+				/* seconds */ S: "0\\d|\\d(?!\\d)|[1-5]\\d|60",
+				/* week number */ U: "0\\d|\\d(?!\\d)|[1-4]\\d|50|51|52|53",
+				/* week number */ W: "0\\d|\\d(?!\\d)|[1-4]\\d|50|51|52|53",
+				/* weekday number */ w: "[0-6]",
+				/* 2-digit year */ y: "\\d\\d",
+				/* 4-digit year */ Y: "\\d\\d\\d\\d",
+				/* whitespace */ t: " ",
+				/* time zone */ z: "Z|(?:[\\+\\-]\\d\\d:?(?:\\d\\d)?)",
+			};
+
+			var MONTH_NUMBERS = {
+				JAN: 0,
+				FEB: 1,
+				MAR: 2,
+				APR: 3,
+				MAY: 4,
+				JUN: 5,
+				JUL: 6,
+				AUG: 7,
+				SEP: 8,
+				OCT: 9,
+				NOV: 10,
+				DEC: 11,
+			};
+			var DAY_NUMBERS_SUN_FIRST = {
+				SUN: 0,
+				MON: 1,
+				TUE: 2,
+				WED: 3,
+				THU: 4,
+				FRI: 5,
+				SAT: 6,
+			};
+			var DAY_NUMBERS_MON_FIRST = {
+				MON: 0,
+				TUE: 1,
+				WED: 2,
+				THU: 3,
+				FRI: 4,
+				SAT: 5,
+				SUN: 6,
+			};
+
+			var capture = [];
+			var pattern_out = pattern
+				.replace(/%(.)/g, (m, c) => EQUIVALENT_MATCHERS[c] || m)
+				.replace(/%(.)/g, (_, c) => {
+					let pat = DATE_PATTERNS[c];
+					if (pat) {
+						capture.push(c);
+						return `(${pat})`;
+					} else {
+						return c;
+					}
+				})
+				.replace(
+					// any number of space or tab characters match zero or more spaces
+					/\s+/g,
+					"\\s*",
+				);
+
+			var matches = new RegExp("^" + pattern_out, "i").exec(UTF8ToString(buf));
+
+			function initDate() {
+				function fixup(value, min, max) {
+					return typeof value != "number" || isNaN(value)
+						? min
+						: value >= min
+							? value <= max
+								? value
+								: max
+							: min;
+				}
+				return {
+					year: fixup(HEAP32[(tm + 20) >> 2] + 1900, 1970, 9999),
+					month: fixup(HEAP32[(tm + 16) >> 2], 0, 11),
+					day: fixup(HEAP32[(tm + 12) >> 2], 1, 31),
+					hour: fixup(HEAP32[(tm + 8) >> 2], 0, 23),
+					min: fixup(HEAP32[(tm + 4) >> 2], 0, 59),
+					sec: fixup(HEAP32[tm >> 2], 0, 59),
+					gmtoff: 0,
+				};
+			}
+
+			if (matches) {
+				var date = initDate();
+				var value;
+
+				var getMatch = (symbol) => {
+					var pos = capture.indexOf(symbol);
+					// check if symbol appears in regexp
+					if (pos >= 0) {
+						// return matched value or null (falsy!) for non-matches
+						return matches[pos + 1];
+					}
+					return;
+				};
+
+				// seconds
+				if ((value = getMatch("S"))) {
+					date.sec = jstoi_q(value);
+				}
+
+				// minutes
+				if ((value = getMatch("M"))) {
+					date.min = jstoi_q(value);
+				}
+
+				// hours
+				if ((value = getMatch("H"))) {
+					// 24h clock
+					date.hour = jstoi_q(value);
+				} else if ((value = getMatch("I"))) {
+					// AM/PM clock
+					var hour = jstoi_q(value);
+					if ((value = getMatch("p"))) {
+						hour += value.toUpperCase()[0] === "P" ? 12 : 0;
+					}
+					date.hour = hour;
+				}
+
+				// year
+				if ((value = getMatch("Y"))) {
+					// parse from four-digit year
+					date.year = jstoi_q(value);
+				} else if ((value = getMatch("y"))) {
+					// parse from two-digit year...
+					var year = jstoi_q(value);
+					if ((value = getMatch("C"))) {
+						// ...and century
+						year += jstoi_q(value) * 100;
+					} else {
+						// ...and rule-of-thumb
+						year += year < 69 ? 2000 : 1900;
+					}
+					date.year = year;
+				}
+
+				// month
+				if ((value = getMatch("m"))) {
+					// parse from month number
+					date.month = jstoi_q(value) - 1;
+				} else if ((value = getMatch("b"))) {
+					// parse from month name
+					date.month = MONTH_NUMBERS[value.substring(0, 3).toUpperCase()] || 0;
+					// TODO: derive month from day in year+year, week number+day of week+year
+				}
+
+				// day
+				if ((value = getMatch("d"))) {
+					// get day of month directly
+					date.day = jstoi_q(value);
+				} else if ((value = getMatch("j"))) {
+					// get day of month from day of year ...
+					var day = jstoi_q(value);
+					var leapYear = isLeapYear(date.year);
+					for (var month = 0; month < 12; ++month) {
+						var daysUntilMonth = arraySum(
+							leapYear ? MONTH_DAYS_LEAP : MONTH_DAYS_REGULAR,
+							month - 1,
+						);
+						if (
+							day <=
+							daysUntilMonth +
+								(leapYear ? MONTH_DAYS_LEAP : MONTH_DAYS_REGULAR)[month]
+						) {
+							date.day = day - daysUntilMonth;
+						}
+					}
+				} else if ((value = getMatch("a"))) {
+					// get day of month from weekday ...
+					var weekDay = value.substring(0, 3).toUpperCase();
+					if ((value = getMatch("U"))) {
+						// ... and week number (Sunday being first day of week)
+						// Week number of the year (Sunday as the first day of the week) as a decimal number [00,53].
+						// All days in a new year preceding the first Sunday are considered to be in week 0.
+						var weekDayNumber = DAY_NUMBERS_SUN_FIRST[weekDay];
+						var weekNumber = jstoi_q(value);
+
+						// January 1st
+						var janFirst = new Date(date.year, 0, 1);
+						var endDate;
+						if (janFirst.getDay() === 0) {
+							// Jan 1st is a Sunday, and, hence in the 1st CW
+							endDate = addDays(janFirst, weekDayNumber + 7 * (weekNumber - 1));
+						} else {
+							// Jan 1st is not a Sunday, and, hence still in the 0th CW
+							endDate = addDays(
+								janFirst,
+								7 - janFirst.getDay() + weekDayNumber + 7 * (weekNumber - 1),
+							);
+						}
+						date.day = endDate.getDate();
+						date.month = endDate.getMonth();
+					} else if ((value = getMatch("W"))) {
+						// ... and week number (Monday being first day of week)
+						// Week number of the year (Monday as the first day of the week) as a decimal number [00,53].
+						// All days in a new year preceding the first Monday are considered to be in week 0.
+						var weekDayNumber = DAY_NUMBERS_MON_FIRST[weekDay];
+						var weekNumber = jstoi_q(value);
+
+						// January 1st
+						var janFirst = new Date(date.year, 0, 1);
+						var endDate;
+						if (janFirst.getDay() === 1) {
+							// Jan 1st is a Monday, and, hence in the 1st CW
+							endDate = addDays(janFirst, weekDayNumber + 7 * (weekNumber - 1));
+						} else {
+							// Jan 1st is not a Monday, and, hence still in the 0th CW
+							endDate = addDays(
+								janFirst,
+								7 -
+									janFirst.getDay() +
+									1 +
+									weekDayNumber +
+									7 * (weekNumber - 1),
+							);
+						}
+
+						date.day = endDate.getDate();
+						date.month = endDate.getMonth();
+					}
+				}
+
+				// time zone
+				if ((value = getMatch("z"))) {
+					// GMT offset as either 'Z' or +-HH:MM or +-HH or +-HHMM
+					if (value.toLowerCase() === "z") {
+						date.gmtoff = 0;
+					} else {
+						var match = value.match(/^((?:\-|\+)\d\d):?(\d\d)?/);
+						date.gmtoff = match[1] * 3600;
+						if (match[2]) {
+							date.gmtoff += date.gmtoff > 0 ? match[2] * 60 : -match[2] * 60;
+						}
+					}
+				}
+
+				/*
+        tm_sec  int seconds after the minute  0-61*
+        tm_min  int minutes after the hour  0-59
+        tm_hour int hours since midnight  0-23
+        tm_mday int day of the month  1-31
+        tm_mon  int months since January  0-11
+        tm_year int years since 1900
+        tm_wday int days since Sunday 0-6
+        tm_yday int days since January 1  0-365
+        tm_isdst  int Daylight Saving Time flag
+        tm_gmtoff long offset from GMT (seconds)
+        */
+
+				var fullDate = new Date(
+					date.year,
+					date.month,
+					date.day,
+					date.hour,
+					date.min,
+					date.sec,
+					0,
+				);
+				HEAP32[tm >> 2] = fullDate.getSeconds();
+				HEAP32[(tm + 4) >> 2] = fullDate.getMinutes();
+				HEAP32[(tm + 8) >> 2] = fullDate.getHours();
+				HEAP32[(tm + 12) >> 2] = fullDate.getDate();
+				HEAP32[(tm + 16) >> 2] = fullDate.getMonth();
+				HEAP32[(tm + 20) >> 2] = fullDate.getFullYear() - 1900;
+				HEAP32[(tm + 24) >> 2] = fullDate.getDay();
+				HEAP32[(tm + 28) >> 2] =
+					arraySum(
+						isLeapYear(fullDate.getFullYear())
+							? MONTH_DAYS_LEAP
+							: MONTH_DAYS_REGULAR,
+						fullDate.getMonth() - 1,
+					) +
+					fullDate.getDate() -
+					1;
+				HEAP32[(tm + 32) >> 2] = 0;
+				HEAP32[(tm + 36) >> 2] = date.gmtoff;
+
+				// we need to convert the matched sequence into an integer array to take care of UTF-8 characters > 0x7F
+				// TODO: not sure that intArrayFromString handles all unicode characters correctly
+				return buf + intArrayFromString(matches[0]).length - 1;
+			}
+
+			return 0;
+		};
+
+		/** @type {function(...*):?} */
+		function _swapcontext() {
+			abort("missing function: swapcontext");
+		}
+		_swapcontext.stub = true;
+
+		var getCFunc = (ident) => {
+			var func = Module["_" + ident]; // closure exported function
+			assert(
+				func,
+				"Cannot call unknown function " + ident + ", make sure it is exported",
+			);
+			return func;
+		};
+
+		var writeArrayToMemory = (array, buffer) => {
+			assert(
+				array.length >= 0,
+				"writeArrayToMemory array must have a length (should be an array or typed array)",
+			);
+			HEAP8.set(array, buffer);
+		};
+
+		var stackAlloc = (sz) => __emscripten_stack_alloc(sz);
+		var stringToUTF8OnStack = (str) => {
+			var size = lengthBytesUTF8(str) + 1;
+			var ret = stackAlloc(size);
+			stringToUTF8(str, ret, size);
+			return ret;
+		};
+
+		/**
+		 * @param {string|null=} returnType
+		 * @param {Array=} argTypes
+		 * @param {Arguments|Array=} args
+		 * @param {Object=} opts
+		 */
+		var ccall = (ident, returnType, argTypes, args, opts) => {
+			// For fast lookup of conversion functions
+			var toC = {
+				string: (str) => {
+					var ret = 0;
+					if (str !== null && str !== undefined && str !== 0) {
+						// null string
+						ret = stringToUTF8OnStack(str);
+					}
+					return ret;
+				},
+				array: (arr) => {
+					var ret = stackAlloc(arr.length);
+					writeArrayToMemory(arr, ret);
+					return ret;
+				},
+			};
+
+			function convertReturnValue(ret) {
+				if (returnType === "string") {
+					return UTF8ToString(ret);
+				}
+				if (returnType === "boolean") return Boolean(ret);
+				return ret;
+			}
+
+			var func = getCFunc(ident);
+			var cArgs = [];
+			var stack = 0;
+			assert(returnType !== "array", 'Return type should not be "array".');
+			if (args) {
+				for (var i = 0; i < args.length; i++) {
+					var converter = toC[argTypes[i]];
+					if (converter) {
+						if (stack === 0) stack = stackSave();
+						cArgs[i] = converter(args[i]);
+					} else {
+						cArgs[i] = args[i];
+					}
+				}
+			}
+			var ret = func(...cArgs);
+			function onDone(ret) {
+				if (stack !== 0) stackRestore(stack);
+				return convertReturnValue(ret);
+			}
+
+			ret = onDone(ret);
+			return ret;
+		};
+
+		FS.createPreloadedFile = FS_createPreloadedFile;
+		FS.staticInit();
+		// Set module methods based on EXPORTED_RUNTIME_METHODS
+		function checkIncomingModuleAPI() {
+			ignoredModuleProp("fetchSettings");
+		}
+		var wasmImports = {
+			/** @export */
+			__assert_fail: ___assert_fail,
+			/** @export */
+			__call_sighandler: ___call_sighandler,
+			/** @export */
+			__syscall__newselect: ___syscall__newselect,
+			/** @export */
+			__syscall_accept4: ___syscall_accept4,
+			/** @export */
+			__syscall_bind: ___syscall_bind,
+			/** @export */
+			__syscall_chdir: ___syscall_chdir,
+			/** @export */
+			__syscall_chmod: ___syscall_chmod,
+			/** @export */
+			__syscall_connect: ___syscall_connect,
+			/** @export */
+			__syscall_dup: ___syscall_dup,
+			/** @export */
+			__syscall_faccessat: ___syscall_faccessat,
+			/** @export */
+			__syscall_fchownat: ___syscall_fchownat,
+			/** @export */
+			__syscall_fcntl64: ___syscall_fcntl64,
+			/** @export */
+			__syscall_fdatasync: ___syscall_fdatasync,
+			/** @export */
+			__syscall_fstat64: ___syscall_fstat64,
+			/** @export */
+			__syscall_ftruncate64: ___syscall_ftruncate64,
+			/** @export */
+			__syscall_getcwd: ___syscall_getcwd,
+			/** @export */
+			__syscall_getdents64: ___syscall_getdents64,
+			/** @export */
+			__syscall_getpeername: ___syscall_getpeername,
+			/** @export */
+			__syscall_getsockname: ___syscall_getsockname,
+			/** @export */
+			__syscall_getsockopt: ___syscall_getsockopt,
+			/** @export */
+			__syscall_ioctl: ___syscall_ioctl,
+			/** @export */
+			__syscall_listen: ___syscall_listen,
+			/** @export */
+			__syscall_lstat64: ___syscall_lstat64,
+			/** @export */
+			__syscall_mkdirat: ___syscall_mkdirat,
+			/** @export */
+			__syscall_newfstatat: ___syscall_newfstatat,
+			/** @export */
+			__syscall_openat: ___syscall_openat,
+			/** @export */
+			__syscall_pipe: ___syscall_pipe,
+			/** @export */
+			__syscall_poll: ___syscall_poll,
+			/** @export */
+			__syscall_readlinkat: ___syscall_readlinkat,
+			/** @export */
+			__syscall_recvfrom: ___syscall_recvfrom,
+			/** @export */
+			__syscall_renameat: ___syscall_renameat,
+			/** @export */
+			__syscall_rmdir: ___syscall_rmdir,
+			/** @export */
+			__syscall_sendto: ___syscall_sendto,
+			/** @export */
+			__syscall_socket: ___syscall_socket,
+			/** @export */
+			__syscall_stat64: ___syscall_stat64,
+			/** @export */
+			__syscall_statfs64: ___syscall_statfs64,
+			/** @export */
+			__syscall_symlinkat: ___syscall_symlinkat,
+			/** @export */
+			__syscall_unlinkat: ___syscall_unlinkat,
+			/** @export */
+			__syscall_utimensat: ___syscall_utimensat,
+			/** @export */
+			_abort_js: __abort_js,
+			/** @export */
+			_emscripten_lookup_name: __emscripten_lookup_name,
+			/** @export */
+			_emscripten_memcpy_js: __emscripten_memcpy_js,
+			/** @export */
+			_emscripten_runtime_keepalive_clear: __emscripten_runtime_keepalive_clear,
+			/** @export */
+			_emscripten_throw_longjmp: __emscripten_throw_longjmp,
+			/** @export */
+			_gmtime_js: __gmtime_js,
+			/** @export */
+			_localtime_js: __localtime_js,
+			/** @export */
+			_mktime_js: __mktime_js,
+			/** @export */
+			_mmap_js: __mmap_js,
+			/** @export */
+			_munmap_js: __munmap_js,
+			/** @export */
+			_setitimer_js: __setitimer_js,
+			/** @export */
+			_tzset_js: __tzset_js,
+			/** @export */
+			clock_time_get: _clock_time_get,
+			/** @export */
+			emscripten_date_now: _emscripten_date_now,
+			/** @export */
+			emscripten_err: _emscripten_err,
+			/** @export */
+			emscripten_get_heap_max: _emscripten_get_heap_max,
+			/** @export */
+			emscripten_get_now: _emscripten_get_now,
+			/** @export */
+			emscripten_resize_heap: _emscripten_resize_heap,
+			/** @export */
+			environ_get: _environ_get,
+			/** @export */
+			environ_sizes_get: _environ_sizes_get,
+			/** @export */
+			exit: _exit,
+			/** @export */
+			fd_close: _fd_close,
+			/** @export */
+			fd_fdstat_get: _fd_fdstat_get,
+			/** @export */
+			fd_read: _fd_read,
+			/** @export */
+			fd_seek: _fd_seek,
+			/** @export */
+			fd_sync: _fd_sync,
+			/** @export */
+			fd_write: _fd_write,
+			/** @export */
+			getaddrinfo: _getaddrinfo,
+			/** @export */
+			getcontext: _getcontext,
+			/** @export */
+			getdtablesize: _getdtablesize,
+			/** @export */
+			getnameinfo: _getnameinfo,
+			/** @export */
+			getprotobyname: _getprotobyname,
+			/** @export */
+			getprotobynumber: _getprotobynumber,
+			/** @export */
+			invoke_i,
+			/** @export */
+			invoke_ii,
+			/** @export */
+			invoke_iii,
+			/** @export */
+			invoke_iiii,
+			/** @export */
+			invoke_iiiii,
+			/** @export */
+			invoke_iiiiii,
+			/** @export */
+			invoke_iiiiiii,
+			/** @export */
+			invoke_iiiiiiiiii,
+			/** @export */
+			invoke_v,
+			/** @export */
+			invoke_vi,
+			/** @export */
+			invoke_vii,
+			/** @export */
+			invoke_viidii,
+			/** @export */
+			invoke_viii,
+			/** @export */
+			invoke_viiii,
+			/** @export */
+			invoke_viiiii,
+			/** @export */
+			makecontext: _makecontext,
+			/** @export */
+			posix_spawnp: _posix_spawnp,
+			/** @export */
+			proc_exit: _proc_exit,
+			/** @export */
+			strptime: _strptime,
+			/** @export */
+			swapcontext: _swapcontext,
+		};
+		var wasmExports;
+		createWasm();
+		var ___wasm_call_ctors = createExportWrapper("__wasm_call_ctors", 0);
+		var _php_wasm_run = (Module["_php_wasm_run"] = createExportWrapper(
+			"php_wasm_run",
+			1,
+		));
+		var _fflush = createExportWrapper("fflush", 1);
+		var _malloc = createExportWrapper("malloc", 1);
+		var _strerror = createExportWrapper("strerror", 1);
+		var _htons = createExportWrapper("htons", 1);
+		var _ntohs = createExportWrapper("ntohs", 1);
+		var _htonl = createExportWrapper("htonl", 1);
+		var _emscripten_builtin_memalign = createExportWrapper(
+			"emscripten_builtin_memalign",
+			2,
+		);
+		var __emscripten_timeout = createExportWrapper("_emscripten_timeout", 2);
+		var _setThrew = createExportWrapper("setThrew", 2);
+		var __emscripten_tempret_set = createExportWrapper(
+			"_emscripten_tempret_set",
+			1,
+		);
+		var _emscripten_stack_init = () =>
+			(_emscripten_stack_init = wasmExports["emscripten_stack_init"])();
+		var _emscripten_stack_get_free = () =>
+			(_emscripten_stack_get_free = wasmExports["emscripten_stack_get_free"])();
+		var _emscripten_stack_get_base = () =>
+			(_emscripten_stack_get_base = wasmExports["emscripten_stack_get_base"])();
+		var _emscripten_stack_get_end = () =>
+			(_emscripten_stack_get_end = wasmExports["emscripten_stack_get_end"])();
+		var __emscripten_stack_restore = (a0) =>
+			(__emscripten_stack_restore = wasmExports["_emscripten_stack_restore"])(
+				a0,
+			);
+		var __emscripten_stack_alloc = (a0) =>
+			(__emscripten_stack_alloc = wasmExports["_emscripten_stack_alloc"])(a0);
+		var _emscripten_stack_get_current = () =>
+			(_emscripten_stack_get_current =
+				wasmExports["emscripten_stack_get_current"])();
+		var dynCall_jiji = (Module["dynCall_jiji"] = createExportWrapper(
+			"dynCall_jiji",
+			5,
+		));
+
+		function invoke_iii(index, a1, a2) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_iiiii(index, a1, a2, a3, a4) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2, a3, a4);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_v(index) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)();
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_ii(index, a1) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_viii(index, a1, a2, a3) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1, a2, a3);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_vii(index, a1, a2) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1, a2);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_vi(index, a1) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_i(index) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)();
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_iiiiiii(index, a1, a2, a3, a4, a5, a6) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2, a3, a4, a5, a6);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_iiii(index, a1, a2, a3) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2, a3);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_viiii(index, a1, a2, a3, a4) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1, a2, a3, a4);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_viiiii(index, a1, a2, a3, a4, a5) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1, a2, a3, a4, a5);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_iiiiii(index, a1, a2, a3, a4, a5) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2, a3, a4, a5);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_iiiiiiiiii(index, a1, a2, a3, a4, a5, a6, a7, a8, a9) {
+			var sp = stackSave();
+			try {
+				return getWasmTableEntry(index)(a1, a2, a3, a4, a5, a6, a7, a8, a9);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		function invoke_viidii(index, a1, a2, a3, a4, a5) {
+			var sp = stackSave();
+			try {
+				getWasmTableEntry(index)(a1, a2, a3, a4, a5);
+			} catch (e) {
+				stackRestore(sp);
+				if (e !== e + 0) throw e;
+				_setThrew(1, 0);
+			}
+		}
+
+		// include: postamble.js
+		// === Auto-generated postamble setup entry stuff ===
+
+		Module["ccall"] = ccall;
+		var missingLibrarySymbols = [
+			"writeI53ToI64",
+			"writeI53ToI64Clamped",
+			"writeI53ToI64Signaling",
+			"writeI53ToU64Clamped",
+			"writeI53ToU64Signaling",
+			"readI53FromU64",
+			"convertI32PairToI53",
+			"convertU32PairToI53",
+			"getTempRet0",
+			"growMemory",
+			"emscriptenLog",
+			"readEmAsmArgs",
+			"listenOnce",
+			"autoResumeAudioContext",
+			"dynCallLegacy",
+			"getDynCaller",
+			"dynCall",
+			"runtimeKeepalivePush",
+			"runtimeKeepalivePop",
+			"asmjsMangle",
+			"HandleAllocator",
+			"getNativeTypeSize",
+			"STACK_SIZE",
+			"STACK_ALIGN",
+			"POINTER_SIZE",
+			"ASSERTIONS",
+			"cwrap",
+			"uleb128Encode",
+			"sigToWasmTypes",
+			"generateFuncType",
+			"convertJsFunctionToWasm",
+			"getEmptyTableSlot",
+			"updateTableMap",
+			"getFunctionAddress",
+			"addFunction",
+			"removeFunction",
+			"reallyNegative",
+			"unSign",
+			"strLen",
+			"reSign",
+			"formatString",
+			"intArrayToString",
+			"AsciiToString",
+			"UTF16ToString",
+			"stringToUTF16",
+			"lengthBytesUTF16",
+			"UTF32ToString",
+			"stringToUTF32",
+			"lengthBytesUTF32",
+			"stringToNewUTF8",
+			"registerKeyEventCallback",
+			"maybeCStringToJsString",
+			"findEventTarget",
+			"getBoundingClientRect",
+			"fillMouseEventData",
+			"registerMouseEventCallback",
+			"registerWheelEventCallback",
+			"registerUiEventCallback",
+			"registerFocusEventCallback",
+			"fillDeviceOrientationEventData",
+			"registerDeviceOrientationEventCallback",
+			"fillDeviceMotionEventData",
+			"registerDeviceMotionEventCallback",
+			"screenOrientation",
+			"fillOrientationChangeEventData",
+			"registerOrientationChangeEventCallback",
+			"fillFullscreenChangeEventData",
+			"registerFullscreenChangeEventCallback",
+			"JSEvents_requestFullscreen",
+			"JSEvents_resizeCanvasForFullscreen",
+			"registerRestoreOldStyle",
+			"hideEverythingExceptGivenElement",
+			"restoreHiddenElements",
+			"setLetterbox",
+			"softFullscreenResizeWebGLRenderTarget",
+			"doRequestFullscreen",
+			"fillPointerlockChangeEventData",
+			"registerPointerlockChangeEventCallback",
+			"registerPointerlockErrorEventCallback",
+			"requestPointerLock",
+			"fillVisibilityChangeEventData",
+			"registerVisibilityChangeEventCallback",
+			"registerTouchEventCallback",
+			"fillGamepadEventData",
+			"registerGamepadEventCallback",
+			"registerBeforeUnloadEventCallback",
+			"fillBatteryEventData",
+			"battery",
+			"registerBatteryEventCallback",
+			"setCanvasElementSize",
+			"getCanvasElementSize",
+			"jsStackTrace",
+			"getCallstack",
+			"convertPCtoSourceLocation",
+			"wasiRightsToMuslOFlags",
+			"wasiOFlagsToMuslOFlags",
+			"safeSetTimeout",
+			"setImmediateWrapped",
+			"safeRequestAnimationFrame",
+			"clearImmediateWrapped",
+			"polyfillSetImmediate",
+			"registerPostMainLoop",
+			"registerPreMainLoop",
+			"getPromise",
+			"makePromise",
+			"idsToPromises",
+			"makePromiseCallback",
+			"ExceptionInfo",
+			"findMatchingCatch",
+			"Browser_asyncPrepareDataCounter",
+			"FS_unlink",
+			"FS_mkdirTree",
+			"_setNetworkCallback",
+			"heapObjectForWebGLType",
+			"toTypedArrayIndex",
+			"webgl_enable_ANGLE_instanced_arrays",
+			"webgl_enable_OES_vertex_array_object",
+			"webgl_enable_WEBGL_draw_buffers",
+			"webgl_enable_WEBGL_multi_draw",
+			"webgl_enable_EXT_polygon_offset_clamp",
+			"webgl_enable_EXT_clip_control",
+			"webgl_enable_WEBGL_polygon_mode",
+			"emscriptenWebGLGet",
+			"computeUnpackAlignedImageSize",
+			"colorChannelsInGlTextureFormat",
+			"emscriptenWebGLGetTexPixelData",
+			"emscriptenWebGLGetUniform",
+			"webglGetUniformLocation",
+			"webglPrepareUniformLocationsBeforeFirstUse",
+			"webglGetLeftBracePos",
+			"emscriptenWebGLGetVertexAttrib",
+			"__glGetActiveAttribOrUniform",
+			"writeGLArray",
+			"registerWebGlEventCallback",
+			"runAndAbortIfError",
+			"ALLOC_NORMAL",
+			"ALLOC_STACK",
+			"allocate",
+			"writeStringToMemory",
+			"writeAsciiToMemory",
+			"setErrNo",
+			"demangle",
+			"stackTrace",
+		];
+		missingLibrarySymbols.forEach(missingLibrarySymbol);
+
+		var unexportedSymbols = [
+			"run",
+			"addOnPreRun",
+			"addOnInit",
+			"addOnPreMain",
+			"addOnExit",
+			"addOnPostRun",
+			"addRunDependency",
+			"removeRunDependency",
+			"out",
+			"err",
+			"callMain",
+			"abort",
+			"wasmMemory",
+			"wasmExports",
+			"writeStackCookie",
+			"checkStackCookie",
+			"readI53FromI64",
+			"convertI32PairToI53Checked",
+			"stackSave",
+			"stackRestore",
+			"stackAlloc",
+			"setTempRet0",
+			"ptrToString",
+			"zeroMemory",
+			"exitJS",
+			"getHeapMax",
+			"abortOnCannotGrowMemory",
+			"ENV",
+			"ERRNO_CODES",
+			"strError",
+			"inetPton4",
+			"inetNtop4",
+			"inetPton6",
+			"inetNtop6",
+			"readSockaddr",
+			"writeSockaddr",
+			"DNS",
+			"Protocols",
+			"Sockets",
+			"timers",
+			"warnOnce",
+			"readEmAsmArgsArray",
+			"jstoi_q",
+			"jstoi_s",
+			"getExecutableName",
+			"handleException",
+			"keepRuntimeAlive",
+			"callUserCallback",
+			"maybeExit",
+			"asyncLoad",
+			"alignMemory",
+			"mmapAlloc",
+			"wasmTable",
+			"noExitRuntime",
+			"getCFunc",
+			"freeTableIndexes",
+			"functionsInTableMap",
+			"setValue",
+			"getValue",
+			"PATH",
+			"PATH_FS",
+			"UTF8Decoder",
+			"UTF8ArrayToString",
+			"UTF8ToString",
+			"stringToUTF8Array",
+			"stringToUTF8",
+			"lengthBytesUTF8",
+			"intArrayFromString",
+			"stringToAscii",
+			"UTF16Decoder",
+			"stringToUTF8OnStack",
+			"writeArrayToMemory",
+			"JSEvents",
+			"specialHTMLTargets",
+			"findCanvasEventTarget",
+			"currentFullscreenStrategy",
+			"restoreOldWindowedStyle",
+			"UNWIND_CACHE",
+			"ExitStatus",
+			"getEnvStrings",
+			"checkWasiClock",
+			"doReadv",
+			"doWritev",
+			"initRandomFill",
+			"randomFill",
+			"promiseMap",
+			"uncaughtExceptionCount",
+			"exceptionLast",
+			"exceptionCaught",
+			"Browser",
+			"getPreloadedImageData__data",
+			"wget",
+			"MONTH_DAYS_REGULAR",
+			"MONTH_DAYS_LEAP",
+			"MONTH_DAYS_REGULAR_CUMULATIVE",
+			"MONTH_DAYS_LEAP_CUMULATIVE",
+			"isLeapYear",
+			"ydayFromDate",
+			"arraySum",
+			"addDays",
+			"SYSCALLS",
+			"getSocketFromFD",
+			"getSocketAddress",
+			"preloadPlugins",
+			"FS_createPreloadedFile",
+			"FS_modeStringToFlags",
+			"FS_getMode",
+			"FS_stdin_getChar_buffer",
+			"FS_stdin_getChar",
+			"FS_createPath",
+			"FS_createDevice",
+			"FS_readFile",
+			"FS",
+			"FS_createDataFile",
+			"FS_createLazyFile",
+			"MEMFS",
+			"TTY",
+			"PIPEFS",
+			"SOCKFS",
+			"tempFixedLengthArray",
+			"miniTempWebGLFloatBuffers",
+			"miniTempWebGLIntBuffers",
+			"GL",
+			"AL",
+			"GLUT",
+			"EGL",
+			"GLEW",
+			"IDBStore",
+			"SDL",
+			"SDL_gfx",
+			"allocateUTF8",
+			"allocateUTF8OnStack",
+			"print",
+			"printErr",
+		];
+		unexportedSymbols.forEach(unexportedRuntimeSymbol);
+
+		var calledRun;
+
+		dependenciesFulfilled = function runCaller() {
+			// If run has never been called, and we should call run (INVOKE_RUN is true, and Module.noInitialRun is not false)
+			if (!calledRun) run();
+			if (!calledRun) dependenciesFulfilled = runCaller; // try this again later, after new deps are fulfilled
+		};
+
+		function stackCheckInit() {
+			// This is normally called automatically during __wasm_call_ctors but need to
+			// get these values before even running any of the ctors so we call it redundantly
+			// here.
+			_emscripten_stack_init();
+			// TODO(sbc): Move writeStackCookie to native to to avoid this.
+			writeStackCookie();
+		}
+
+		function run() {
+			if (runDependencies > 0) {
+				return;
+			}
+
+			stackCheckInit();
+
+			preRun();
+
+			// a preRun added a dependency, run will be called later
+			if (runDependencies > 0) {
+				return;
+			}
+
+			function doRun() {
+				// run may have just been called through dependencies being fulfilled just in this very frame,
+				// or while the async setStatus time below was happening
+				if (calledRun) return;
+				calledRun = true;
+				Module["calledRun"] = true;
+
+				if (ABORT) return;
+
+				initRuntime();
+
+				readyPromiseResolve(Module);
+				Module["onRuntimeInitialized"]?.();
+
+				assert(
+					!Module["_main"],
+					'compiled without a main, but one is present. if you added it from JS, use Module["onRuntimeInitialized"]',
+				);
+
+				postRun();
+			}
+
+			if (Module["setStatus"]) {
+				Module["setStatus"]("Running...");
+				setTimeout(() => {
+					setTimeout(() => Module["setStatus"](""), 1);
+					doRun();
+				}, 1);
+			} else {
+				doRun();
+			}
+			checkStackCookie();
+		}
+
+		function checkUnflushedContent() {
+			// Compiler settings do not allow exiting the runtime, so flushing
+			// the streams is not possible. but in ASSERTIONS mode we check
+			// if there was something to flush, and if so tell the user they
+			// should request that the runtime be exitable.
+			// Normally we would not even include flush() at all, but in ASSERTIONS
+			// builds we do so just for this check, and here we see if there is any
+			// content to flush, that is, we check if there would have been
+			// something a non-ASSERTIONS build would have not seen.
+			// How we flush the streams depends on whether we are in SYSCALLS_REQUIRE_FILESYSTEM=0
+			// mode (which has its own special function for this; otherwise, all
+			// the code is inside libc)
+			var oldOut = out;
+			var oldErr = err;
+			var has = false;
+			out = err = (x) => {
+				has = true;
+			};
+			try {
+				// it doesn't matter if it fails
+				_fflush(0);
+				// also flush in the JS FS layer
+				["stdout", "stderr"].forEach((name) => {
+					var info = FS.analyzePath("/dev/" + name);
+					if (!info) return;
+					var stream = info.object;
+					var rdev = stream.rdev;
+					var tty = TTY.ttys[rdev];
+					if (tty?.output?.length) {
+						has = true;
+					}
+				});
+			} catch (e) {}
+			out = oldOut;
+			err = oldErr;
+			if (has) {
+				warnOnce(
+					"stdio streams had content in them that was not flushed. you should set EXIT_RUNTIME to 1 (see the Emscripten FAQ), or make sure to emit a newline when you printf etc.",
+				);
+			}
+		}
+
+		if (Module["preInit"]) {
+			if (typeof Module["preInit"] == "function")
+				Module["preInit"] = [Module["preInit"]];
+			while (Module["preInit"].length > 0) {
+				Module["preInit"].pop()();
+			}
+		}
+
+		run();
+
+		// end include: postamble.js
+
+		// include: postamble_modularize.js
+		// In MODULARIZE mode we wrap the generated code in a factory function
+		// and return either the Module itself, or a promise of the module.
+		//
+		// We assign to the `moduleRtn` global here and configure closure to see
+		// this as and extern so it won't get minified.
+
+		moduleRtn = readyPromise;
+
+		// Assertion for attempting to access module properties on the incoming
+		// moduleArg.  In the past we used this object as the prototype of the module
+		// and assigned properties to it, but now we return a distinct object.  This
+		// keeps the instance private until it is ready (i.e the promise has been
+		// resolved).
+		for (const prop of Object.keys(Module)) {
+			if (!(prop in moduleArg)) {
+				Object.defineProperty(moduleArg, prop, {
+					configurable: true,
+					get() {
+						abort(
+							`Access to module property ('${prop}') is no longer possible via the module constructor argument; Instead, use the result of the module constructor.`,
+						);
+					},
+				});
+			}
+		}
+		// end include: postamble_modularize.js
+
+		return moduleRtn;
+	};
+})();
+export default Module;
diff --git a/src/quiz.ts b/src/quiz.ts
new file mode 100644
index 0000000..43e9f49
--- /dev/null
+++ b/src/quiz.ts
@@ -0,0 +1,10 @@
+export type Quiz = {
+	label: string;
+	func: string;
+	message: string;
+};
+
+export type QuizGroup = {
+	label: string;
+	quizzes: Quiz[];
+};
diff --git a/src/quiz_data.ts b/src/quiz_data.ts
new file mode 100644
index 0000000..3c6f6dd
--- /dev/null
+++ b/src/quiz_data.ts
@@ -0,0 +1,74 @@
+import { QuizGroup } from "./quiz";
+
+export const QUIZ_GROUPS: QuizGroup[] = [
+	{
+		label: "チュートリアル",
+		quizzes: [
+			{
+				label: "Q1",
+				func: "abs",
+				message: "トークン1文字目「#」",
+			},
+		],
+	},
+	{
+		label: "かんたん",
+		quizzes: [
+			{
+				label: "Q2",
+				func: "strlen",
+				message: "トークン2文字目「W」",
+			},
+			{
+				label: "Q3",
+				func: "gettype",
+				message: "トークン3文字目「E」",
+			},
+			{
+				label: "Q4",
+				func: "count",
+				message: "トークン4文字目「❤」",
+			},
+		],
+	},
+	{
+		label: "ふつう",
+		quizzes: [
+			{
+				label: "Q5",
+				func: "md5",
+				message: "トークン5文字目「P」",
+			},
+			{
+				label: "Q6",
+				func: "strtoupper",
+				message: "トークン6文字目「H」",
+			},
+			{
+				label: "Q7",
+				func: "array_keys",
+				message: "トークン7文字目「P」。トークンはこれでおわり",
+			},
+		],
+	},
+	{
+		label: "むずかしい",
+		quizzes: [
+			{
+				label: "Q8",
+				func: "str_rot13",
+				message: "すごい！",
+			},
+			{
+				label: "Q9",
+				func: "metaphone",
+				message: "すごい！",
+			},
+			{
+				label: "Q10",
+				func: "array_change_key_case",
+				message: "すごい！",
+			},
+		],
+	},
+];
diff --git a/src/styles.css b/src/styles.css
new file mode 100644
index 0000000..b5d845e
--- /dev/null
+++ b/src/styles.css
@@ -0,0 +1,73 @@
+body {
+	margin: 0;
+	padding: 0;
+	font-size: 14px;
+	background-color: #ee0;
+}
+
+table#layout {
+	width: 800px;
+	margin: 0 auto;
+	border: 4px solid #000;
+}
+
+#layout td {
+	border: 2px solid #00e;
+	padding: 10px;
+	vertical-align: top;
+}
+
+#header {
+	text-align: center;
+	font-weight: bold;
+	font-size: 32px;
+	background-color: #e0e;
+	color: #fff;
+}
+
+#sidebar {
+	width: 200px;
+	background-color: #ec0;
+}
+
+#sidebar .hidden {
+  color: #ec0;
+}
+
+#content {
+	background-color: #ee0;
+}
+
+code {
+	background-color: #eee;
+	padding: 2px 4px;
+}
+
+input[type="text"] {
+	width: 180px;
+	background-color: #eee;
+	border: 1px solid #000;
+	padding: 2px 4px;
+}
+
+.marquee {
+	overflow: hidden;
+	white-space: nowrap;
+	box-sizing: border-box;
+	width: 300px;
+}
+
+.marquee span {
+	display: inline-block;
+	padding-left: 100%;
+	animation: marquee-scroll 10s linear infinite;
+}
+
+@keyframes marquee-scroll {
+	0% {
+		transform: translateX(0);
+	}
+	100% {
+		transform: translateX(-100%);
+	}
+}
diff --git a/src/vite-env.d.ts b/src/vite-env.d.ts
new file mode 100644
index 0000000..11f02fe
--- /dev/null
+++ b/src/vite-env.d.ts
@@ -0,0 +1 @@
+/// <reference types="vite/client" />
diff --git a/tools/compile-php-to-wasm.sh b/tools/compile-php-to-wasm.sh
new file mode 100755
index 0000000..60806e7
--- /dev/null
+++ b/tools/compile-php-to-wasm.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+set -eux
+
+cd wasm
+docker build -t phperkaigi2025-tokens-php-wasm .
+docker create --name phperkaigi2025-tokens-php-wasm-tmp-container phperkaigi2025-tokens-php-wasm
+docker cp phperkaigi2025-tokens-php-wasm-tmp-container:/src/php-wasm.js ../src/php-wasm-bridge.js
+docker cp phperkaigi2025-tokens-php-wasm-tmp-container:/src/php-wasm.wasm ../public/php-wasm.wasm
+docker rm phperkaigi2025-tokens-php-wasm-tmp-container
diff --git a/tsconfig.app.json b/tsconfig.app.json
new file mode 100644
index 0000000..20d4981
--- /dev/null
+++ b/tsconfig.app.json
@@ -0,0 +1,24 @@
+{
+	"compilerOptions": {
+		"tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+		"target": "ES2021",
+		"useDefineForClassFields": true,
+		"lib": ["ES2021", "DOM", "DOM.Iterable"],
+		"module": "ESNext",
+		"skipLibCheck": true,
+
+		"moduleResolution": "bundler",
+		"allowImportingTsExtensions": true,
+		"isolatedModules": true,
+		"moduleDetection": "force",
+		"noEmit": true,
+		"jsx": "react-jsx",
+
+		"strict": true,
+		"noUnusedLocals": true,
+		"noUnusedParameters": true,
+		"noFallthroughCasesInSwitch": true,
+		"noUncheckedSideEffectImports": true
+	},
+	"include": ["src"]
+}
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..fb12418
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,7 @@
+{
+	"files": [],
+	"references": [
+		{ "path": "./tsconfig.app.json" },
+		{ "path": "./tsconfig.node.json" }
+	]
+}
diff --git a/tsconfig.node.json b/tsconfig.node.json
new file mode 100644
index 0000000..0cea7db
--- /dev/null
+++ b/tsconfig.node.json
@@ -0,0 +1,22 @@
+{
+	"compilerOptions": {
+		"tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+		"target": "ES2022",
+		"lib": ["ES2023"],
+		"module": "ESNext",
+		"skipLibCheck": true,
+
+		"moduleResolution": "bundler",
+		"allowImportingTsExtensions": true,
+		"isolatedModules": true,
+		"moduleDetection": "force",
+		"noEmit": true,
+
+		"strict": true,
+		"noUnusedLocals": true,
+		"noUnusedParameters": true,
+		"noFallthroughCasesInSwitch": true,
+		"noUncheckedSideEffectImports": true
+	},
+	"include": ["vite.config.ts"]
+}
diff --git a/vite.config.ts b/vite.config.ts
new file mode 100644
index 0000000..30e3579
--- /dev/null
+++ b/vite.config.ts
@@ -0,0 +1,10 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+
+// https://vite.dev/config/
+export default defineConfig({
+	build: {
+		outDir: "docs",
+	},
+	plugins: [react()],
+});
diff --git a/wasm/Dockerfile b/wasm/Dockerfile
new file mode 100644
index 0000000..270026e
--- /dev/null
+++ b/wasm/Dockerfile
@@ -0,0 +1,66 @@
+FROM emscripten/emsdk:3.1.74
+
+RUN git clone --depth=1 --branch=php-8.4.2 https://github.com/php/php-src
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        autoconf \
+        bison \
+        pkg-config \
+        re2c \
+        && \
+    :
+
+# Define ZEND_MM_ERROR=0 for suppressing munmap() errors.
+RUN cd php-src && \
+    ./buildconf --force && \
+    emconfigure ./configure \
+        --disable-all \
+        --disable-mbregex \
+        --disable-fiber-asm \
+        --disable-cli \
+        --disable-cgi \
+        --disable-phpdbg \
+        --enable-embed=static \
+        --enable-mbstring \
+        --without-iconv \
+        --without-libxml \
+        --without-pcre-jit \
+        --without-pdo-sqlite \
+        --without-sqlite3 \
+        && \
+    EMCC_CFLAGS='-s ERROR_ON_UNDEFINED_SYMBOLS=0 -D ZEND_MM_ERROR=0' emmake make -j$(nproc) && \
+    mv libs/libphp.a .. && \
+    make clean && \
+    git clean -fd && \
+    :
+
+COPY php-wasm.c /src/
+
+RUN cd php-src && \
+    emcc \
+        -c \
+        -o php-wasm.o \
+        -I . \
+        -I TSRM \
+        -I Zend \
+        -I main \
+        ../php-wasm.c \
+        && \
+    mv php-wasm.o .. && \
+    make clean && \
+    git clean -fd && \
+    :
+
+RUN emcc \
+    -s ENVIRONMENT=web \
+    -s ERROR_ON_UNDEFINED_SYMBOLS=0 \
+    -s EXPORTED_RUNTIME_METHODS='["ccall"]' \
+    -s EXPORT_ES6=1 \
+    -s INITIAL_MEMORY=16777216 \
+    -s INVOKE_RUN=0 \
+    -s MODULARIZE=1 \
+    -o php-wasm.js \
+    php-wasm.o \
+    libphp.a \
+    ;
diff --git a/wasm/php-wasm.c b/wasm/php-wasm.c
new file mode 100644
index 0000000..9c71ca1
--- /dev/null
+++ b/wasm/php-wasm.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <emscripten.h>
+#include <Zend/zend_execute.h>
+#include <sapi/embed/php_embed.h>
+
+int EMSCRIPTEN_KEEPALIVE php_wasm_run(const char* code) {
+    zend_result result;
+
+    int argc = 1;
+    char* argv[] = { "php.wasm", NULL };
+
+    PHP_EMBED_START_BLOCK(argc, argv);
+
+    result = zend_eval_string_ex(code, NULL, "php.wasm code", 1);
+
+    PHP_EMBED_END_BLOCK();
+
+    fflush(stdout);
+    fflush(stderr);
+
+    return result == SUCCESS ? 0 : 1;
+}