From 107aa169cd04d9f2fe2b70f89dec0b37e9feef16 Mon Sep 17 00:00:00 2001
From: so1ve <nn_201312@163.com>
Date: Mon, 31 Jul 2023 23:44:12 +0800
Subject: [PATCH] fix: make sure typeAnnotation exists

---
 source/is.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/is.ts b/source/is.ts
index 848564a..dd291c0 100644
--- a/source/is.ts
+++ b/source/is.ts
@@ -8,7 +8,7 @@ import { TSESTree as es } from "@typescript-eslint/experimental-utils";
 export function hasTypeAnnotation<T extends es.Node>(
   node: T
 ): node is T & { typeAnnotation: es.TSTypeAnnotation } {
-  return node.hasOwnProperty("typeAnnotation");
+  return "typeAnnotation" in node && !!node.typeAnnotation;
 }
 
 export function isArrayExpression(node: es.Node): node is es.ArrayExpression {