fix: ExpressionBody should respect [In] parameter (#11931)

2020-08-26 13:24:44 -04:00
parent 97075c9091
commit 2c60595342
5 changed files with 97 additions and 1 deletions
--- a/packages/babel-parser/src/parser/expression.js
+++ b/packages/babel-parser/src/parser/expression.js
@@ -2118,7 +2118,8 @@ export default class ExpressionParser extends LValParser {
    this.state.inParameters = false;

    if (isExpression) {
-      node.body = this.parseMaybeAssignAllowIn();
+      // https://tc39.es/ecma262/#prod-ExpressionBody
+      node.body = this.parseMaybeAssign();
      this.checkParams(node, false, allowExpression, false);
    } else {
      const oldStrict = this.state.strict;