无法使Array.prototype.includes在Typescript 2.0中工作

Question

我正在使用typescript @ next(版本2.1.0-dev.20160812具体).

我在尝试使用Arrays.prototype.includes时遇到错误.

例如这段代码

let myItems: Array<string>;
let exists: boolean = myItems.includes('blah');

生成以下错误:

Property 'includes' does not exist on type 'string[]'.at line 124 col 26

这是我的tsconfig.json:

{
  "compileOnSave": true,
  "compilerOptions": {
    "module": "es6",
    "target": "es6",
    "moduleResolution": "node",
    "allowSyntheticDefaultImports": true,
    "noImplicitAny": true,
    "sourceMap": true,
    "outDir": "ts-build",
    "jsx": "preserve"
  },
  "exclude": [
    "node_modules"
  ]
}

Answer 1

我通过将lib:["es2016","dom"]添加到tsconfig.json中的编译器选项来修复此问题