Use integer instead of actual stack

babel · Nov 18, 2018 · be59169 · be59169
1 parent 8ee970e
commit be59169
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/packages/babel-parser/src/plugins/typescript.js b/packages/babel-parser/src/plugins/typescript.js
@@ -755,14 +755,14 @@ export default (superClass: Class<Parser>): Class<Parser> =>
       }
 
       if (this.match(tt.braceL)) {
-        const braceStack = [tt.braceL];
+        let braceStackCounter = 1;
         this.next();
 
-        while (braceStack.length > 0) {
+        while (braceStackCounter > 0) {
           if (this.match(tt.braceL)) {
-            braceStack.push(tt.braceL);
+            ++braceStackCounter;
           } else if (this.match(tt.braceR)) {
-            braceStack.pop();
+            --braceStackCounter;
           }
           this.next();
         }