babel
diff --git a/‎packages/babel-parser/src/plugins/typescript/index.js‎
Lines changed: 1 addition & 0 deletions b/‎packages/babel-parser/src/plugins/typescript/index.js‎
Lines changed: 1 addition & 0 deletions
diff --git a/‎packages/babel-parser/src/types.js‎
Lines changed: 1 addition & 1 deletion b/‎packages/babel-parser/src/types.js‎
Lines changed: 1 addition & 1 deletion
diff --git a/‎packages/babel-parser/test/fixtures/typescript/class/predicate-types/output.json‎
Lines changed: 4 additions & 2 deletions b/‎packages/babel-parser/test/fixtures/typescript/class/predicate-types/output.json‎
Lines changed: 4 additions & 2 deletions
@@ -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");
     }
 
 
@@ -1262,7 +1262,7 @@ export type TsTypePredicate = TsTypeBase & {
   type: "TSTypePredicate",
   parameterName: Identifier | TsThisType,
   typeAnnotation: TsTypeAnnotation,
-  asserts?: boolean,
+  asserts: boolean,
 };
 
 // `typeof` operator
 
@@ -52,7 +52,8 @@
                       "type": "TSStringKeyword",
                       "start":31,"end":37,"loc":{"start":{"line":2,"column":19},"end":{"line":2,"column":25}}
                     }
-                  }
+                  },
+                  "asserts": false
                 }
               },
               "body": {
@@ -92,7 +93,8 @@
                         "type": "TSStringKeyword",
                         "start":66,"end":72,"loc":{"start":{"line":4,"column":22},"end":{"line":4,"column":28}}
                       }
-                    }
+                    },
+                    "asserts": false
                   }
                 },
                 "id": null,
Original file line number	Diff line number	Diff line change
`@@ -357,6 +357,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>`
`357`	`357`	`const node: N.TsTypePredicate = this.startNodeAtNode(lhs);`
`358`	`358`	`node.parameterName = lhs;`
`359`	`359`	`node.typeAnnotation = this.tsParseTypeAnnotation(/* eatColon */ false);`
	`360`	`+ node.asserts = false;`
`360`	`361`	`return this.finishNode(node, "TSTypePredicate");`
`361`	`362`	`}`
`362`	`363`
Original file line number	Diff line number	Diff line change
`@@ -52,7 +52,8 @@`
`52`	`52`	`"type": "TSStringKeyword",`
`53`	`53`	`"start":31,"end":37,"loc":{"start":{"line":2,"column":19},"end":{"line":2,"column":25}}`
`54`	`54`	`}`
`55`		`- }`
	`55`	`+ },`
	`56`	`+ "asserts": false`
`56`	`57`	`}`
`57`	`58`	`},`
`58`	`59`	`"body": {`
`@@ -92,7 +93,8 @@`
`92`	`93`	`"type": "TSStringKeyword",`
`93`	`94`	`"start":66,"end":72,"loc":{"start":{"line":4,"column":22},"end":{"line":4,"column":28}}`
`94`	`95`	`}`
`95`		`- }`
	`96`	`+ },`
	`97`	`+ "asserts": false`
`96`	`98`	`}`
`97`	`99`	`},`
`98`	`100`	`"id": null,`