feat

liuxingbaoyu · Jan 23, 2025 · 053bc7b · 053bc7b
1 parent d9fa47d
commit 053bc7b
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Showing 2 changed files with 27 additions and 15 deletions.
diff --git a/packages/babel-plugin-transform-typescript/src/enum.ts b/packages/babel-plugin-transform-typescript/src/enum.ts
@@ -175,22 +175,28 @@ function ReferencedIdentifier(
   const name = expr.node.name;
 
   if (seen.has(name)) {
-    for (
-      let curScope = expr.scope;
-      curScope !== path.scope;
-      curScope = curScope.parent
-    ) {
-      if (curScope.hasOwnBinding(name)) {
-        /* The name is declared inside enum:
-        enum Foo {
-          A,
-          B = (() => {
-            const A = 1;
-            return A;
-          })())
-        } */
+    /* The name is declared inside enum:
+      enum Foo {
+        A,
+        B = (() => {
+          const A = 1;
+          return A;
+        })())
+      } */
+    if (process.env.BABEL_8_BREAKING) {
+      if (expr.scope.hasBinding(name, { upToScope: path.scope })) {
         return;
       }
+    } else {
+      for (
+        let curScope = expr.scope;
+        curScope !== path.scope;
+        curScope = curScope.parent
+      ) {
+        if (curScope.hasOwnBinding(name)) {
+          return;
+        }
+      }
     }
 
     expr.replaceWith(

diff --git a/packages/babel-traverse/src/scope/index.ts b/packages/babel-traverse/src/scope/index.ts
@@ -1204,11 +1204,17 @@ class Scope {
   // was used to declare a variable in a different scope.
   hasBinding(
     name: string,
-    opts?: boolean | { noGlobals?: boolean; noUids?: boolean },
+    opts?:
+      | boolean
+      | { noGlobals?: boolean; noUids?: boolean; upToScope?: Scope },
   ) {
     if (!name) return false;
+    const upToScope = (opts as { upToScope?: Scope })?.upToScope;
     let scope: Scope = this;
     do {
+      if (upToScope === scope) {
+        return false;
+      }
       if (scope.hasOwnBinding(name)) {
         return true;
       }