Disallow await inside async arrow params (#10469)

* Disallow await inside async arrow params * Use -1 as default for awaitPos/yieldPos
2019-10-02 07:37:40 +02:00
parent fa5057f9fb
commit a219b6de7a
11 changed files with 526 additions and 41 deletions
--- a/packages/babel-parser/src/tokenizer/state.js
+++ b/packages/babel-parser/src/tokenizer/state.js
@@ -97,8 +97,8 @@ export default class State {
  decoratorStack: Array<Array<N.Decorator>> = [[]];

  // Positions to delayed-check that yield/await does not exist in default parameters.
-  yieldPos: number = 0;
-  awaitPos: number = 0;
+  yieldPos: number = -1;
+  awaitPos: number = -1;

  // Token store.
  tokens: Array<Token | N.Comment> = [];