Cannot use import statement outside a module

参考资料：https://www.jianshu.com/p/60a8a74f5eee?ivk_sa=1024320u

 使用 vs code 调试js 代码，出现如上报错

解决过程：

1. npm init -y
2. 在 package.json 中添加字段 type

package.json
{
  "name": "promise",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "type": "module",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC"
}