async/await __generator 未定义

Posted 2023-03-07

【中文标题】async/await __generator 未定义

【英文标题】：async/await __generator is not defined

【发布时间】：2017-06-09 08:46:50

【问题描述】：

我正在尝试将 async/await 函数与 angular2-webpack-starer 和 typescript 一起使用（现在支持针对 es5 的此函数），但出现错误：

这是组件内的代码：

// function inside component
async checkSlug(slug: string) 
       // nothing here

我正在使用 webpack2.2 和 typescript 2.1.5。这是我的 tsconfig：

  "compilerOptions": 
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "allowSyntheticDefaultImports": true,
    "sourceMap": true,
    "noEmit": true,
    "noEmitHelpers": true,
    "strictNullChecks": false,
    "baseUrl": "./src",
    "paths": 
    ,
    "lib": [
      "dom",
      "es7",
      "es2015.promise"
    ],
    "types": [
      "hammerjs",
      "jasmine",
      "node",
      "protractor",
      "selenium-webdriver",
      "source-map",
      "uglify-js",
      "webpack",
      "chai",
      "chai-as-promised",
      "lodash"
    ]
  ,
  "exclude": [
    "node_modules",
    "dist"
  ],
  "awesomeTypescriptLoaderOptions": 
    "forkChecker": true,
    "useWebpackText": true
  ,
  "compileOnSave": false,
  "buildOnSave": false,
  "atom":  "rewriteTsconfig": false 

【问题讨论】：

您已经告诉编译器不要使用"noEmitHelpers": true 为您生成该辅助函数。如果您将其设置为 false 它应该可以工作。否则你需要提供辅助函数。见blog.mariusschulz.com/2016/12/16/…

【参考方案1】：

好的，这个 tsconfig.json 有效

  "compilerOptions": 
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "allowSyntheticDefaultImports": true,
    "sourceMap": true,
    "noEmit": true,
    "noEmitHelpers": false,
    "strictNullChecks": false,
    "baseUrl": "./src",
    "paths": 
    ,
    "lib": [
      "dom",
      "es7",
      "es5",
      "es2015.promise"
    ],
    "types": [
      "hammerjs",
      "jasmine",
      "node",
      "protractor",
      "selenium-webdriver",
      "source-map",
      "uglify-js",
      "webpack",
      "chai",
      "chai-as-promised",
      "lodash"
    ]
  ,
  "exclude": [
    "node_modules",
    "dist"
  ],
  "awesomeTypescriptLoaderOptions": 
    "forkChecker": true,
    "useWebpackText": true
  ,
  "compileOnSave": false,
  "buildOnSave": false,
  "atom":  "rewriteTsconfig": false 

【讨论】：

这个答案对解决方案比较清楚：***.com/a/42426996/1569600noEmitHelpers: false