[ts]Set false to default value of TsTypePredicate.asserts (#12352)

2020-11-17 00:51:27 +09:00
parent 56fd90452c
commit a4e4aede14
3 changed files with 6 additions and 3 deletions
--- a/packages/babel-parser/src/plugins/typescript/index.js
+++ b/packages/babel-parser/src/plugins/typescript/index.js
@@ -357,6 +357,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
      const node: N.TsTypePredicate = this.startNodeAtNode(lhs);
      node.parameterName = lhs;
      node.typeAnnotation = this.tsParseTypeAnnotation(/* eatColon */ false);
+      node.asserts = false;
      return this.finishNode(node, "TSTypePredicate");
    }