1 files changed, 7 insertions, 3 deletions
diff --git a/crates/shirabe-class-map-generator/src/class_map.rs b/crates/shirabe-class-map-generator/src/class_map.rs
index 311924b..c397c5c 100644
--- a/crates/shirabe-class-map-generator/src/class_map.rs
+++ b/crates/shirabe-class-map-generator/src/class_map.rs
@@ -2,9 +2,7 @@
 
 use indexmap::IndexMap;
 use shirabe_external_packages::composer::pcre::preg::Preg;
-use shirabe_php_shim::{
-    Countable, InvalidArgumentException, OutOfBoundsException, rtrim, strpos, strtr,
-};
+use shirabe_php_shim::{Countable, OutOfBoundsException, rtrim, strpos, strtr};
 
 #[derive(Debug, Clone)]
 pub struct PsrViolationEntry {
@@ -19,6 +17,12 @@ pub struct ClassMap {
     psr_violations: IndexMap<String, Vec<PsrViolationEntry>>,
 }
 
+impl Default for ClassMap {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl ClassMap {
     pub fn new() -> Self {
         ClassMap {