test(es/parser): Add a test for duplicate labels (#10784)

bvanjoi · web-flow · commit 0ecb3f5c0f31 · 2025-07-05T18:14:18.000+09:00
diff --git a/crates/swc_ecma_parser/tests/errors/duplicate_label/input.js b/crates/swc_ecma_parser/tests/errors/duplicate_label/input.js
@@ -0,0 +1,6 @@
+a: {
+  a: {
+    break a;
+  }
+  break a;
+}
diff --git a/crates/swc_ecma_parser/tests/errors/duplicate_label/input.js.swc-stderr b/crates/swc_ecma_parser/tests/errors/duplicate_label/input.js.swc-stderr
@@ -0,0 +1,7 @@
+  x Label a is already declared
+   ,-[$DIR/tests/errors/duplicate_label/input.js:2:1]
+ 1 | a: {
+ 2 |   a: {
+   :   ^
+ 3 |     break a;
+   `----

-Original file line number
+Diff line change
@@ @@ -0,0 +1,6 @@ @@
 +a: {
 +  a: {
 +    break a;
 +  }
 +  break a;
 +}