UpdateExpressions as callees must be parenthesized (#6922)

2017-11-27 23:31:24 +01:00
parent 58962c35b5
commit 18c8d97c3d
3 changed files with 20 additions and 2 deletions
--- a/packages/babel-generator/src/node/parentheses.js
+++ b/packages/babel-generator/src/node/parentheses.js
@@ -38,9 +38,13 @@ export function NullableTypeAnnotation(node: Object, parent: Object): boolean {
 export { NullableTypeAnnotation as FunctionTypeAnnotation };

 export function UpdateExpression(node: Object, parent: Object): boolean {
-  // (foo++).test()
  return (
-    (t.isMemberExpression(parent) && parent.object === node) ||
+    // (foo++).test(), (foo++)[0]
+    t.isMemberExpression(parent, { object: node }) ||
+    // (foo++)()
+    t.isCallExpression(parent, { callee: node }) ||
+    // new (foo++)()
+    t.isNewExpression(parent, { callee: node }) ||
    isClassExtendsClause(node, parent)
  );
 }