Merge commit '6e92d2345e8231a44556ce7d416451f5f3e6c398' as 'engine262'

2026-08-19 00:31:06 +00:00 · 2026-03-27 10:07:29 +05:30
parent 8f26db5a1f 6e92d2345e
commit b42a69d9f8
433 changed files with 90478 additions and 0 deletions
@@ -0,0 +1,26 @@
+import type { ParseNode } from '../parser/ParseNode.mts';
+import { HasInitializer } from './all.mts';
+
+export function ExpectedArgumentCount(FormalParameterList: ParseNode.FormalParameters) {
+  if (FormalParameterList.length === 0) {
+    return 0;
+  }
+
+  let count = 0;
+  for (const FormalParameter of FormalParameterList.slice(0, -1)) {
+    const BindingElement = FormalParameter;
+    if (HasInitializer(BindingElement)) {
+      return count;
+    }
+    count += 1;
+  }
+
+  const last = FormalParameterList[FormalParameterList.length - 1];
+  if (last.type === 'BindingRestElement') {
+    return count;
+  }
+  if (HasInitializer(last)) {
+    return count;
+  }
+  return count + 1;
+}