feat(nuldoc): improve error handling when a tag is undefined

1 files changed, 7 insertions, 0 deletions

diff --git a/nuldoc-src/config.ts b/nuldoc-src/config.ts
index cbbabca..76a05fe 100644
--- a/nuldoc-src/config.ts
+++ b/nuldoc-src/config.ts
@@ -33,3 +33,10 @@ export const config = {
 };
 
 export type Config = typeof config;
+
+export function getTagLabel(c: Config, slug: string): string {
+  if (!(slug in c.blog.tagLabels)) {
+    throw new Error(`Unknown tag: ${slug}`);
+  }
+  return (c.blog.tagLabels as { [slug: string]: string })[slug];
+}