如何使用 babel 7.5 + runtime + plugin-transform-runtime 修复 regeneratorRuntime 错误异步方法

Question

我尝试在 js 脚本中使用 async/await (class 方法) 在 webpack 配置中但我遇到了这个错误：

search.js:33 Uncaught ReferenceError: regeneratorRuntime is not defined

我可能在 babelrc 文件中有错误，但我尝试了在网上找到的所有东西：/

堆栈：Visual Studio 代码中的 WSL1 节点 10.16.3 npm 6.11.1。

以前，我的 polyfill 配置也有类似的问题。我尝试将新的 Babel 推荐与 @babel/plugin-transform-runtime 和 @babel/runtime 一起使用，但问题仍然存在。

我尝试删除 /node_modules/ 目录并锁定包文件以使用 npm i 再次生成它，但没有任何变化。

我对异步函数声明没有问题（在 class 之外）。

生成错误的文件

class Search {

    constructor() {...}

    async run() {
        await this.xxxx();
    }

    xxxx() {...}
}

.babelrc

{
  "presets": [
    ["@babel/preset-env"],
    [
      "@babel/env",
      {
        "modules": false,
        "useBuiltIns": "usage",
        "corejs": 3
      }
    ]
  ],
  "plugins": [
    [ "@babel/plugin-transform-runtime", {"regenerator": true, "corejs": 3} ],
    [ "@babel/plugin-transform-async-to-generator" ]
  ]
}

package.json

{
  ...

  "devDependencies": {
    "@babel/core": "^7.5.5",
    "@babel/plugin-syntax-dynamic-import": "^7.2.0",
    "@babel/plugin-transform-async-to-generator": "^7.5.0",
    "@babel/plugin-transform-runtime": "^7.6.2",
    "@babel/preset-env": "^7.6.3",
    "autoprefixer": "^9.6.1",
    "babel-loader": "^8.0.6",
    "clean-webpack-plugin": "^2.0.2",
    "css-loader": "^2.1.1",
    "file-loader": "^3.0.1",
    "fontmin-webpack": "^2.0.4",
    "imagemin-gifsicle": "^6.0.1",
    "imagemin-jpegtran": "^6.0.0",
    "imagemin-optipng": "^7.0.0",
    "imagemin-svgo": "^7.0.0",
    "imagemin-webpack": "^5.1.0",
    "jquery": "^3.4.1",
    "loader": "^2.1.1",
    "mini-css-extract-plugin": "^0.5.0",
    "node-sass": "^4.12.0",
    "optimize-css-assets-webpack-plugin": "^5.0.3",
    "postcss-cli": "^6.1.2",
    "postcss-import": "^12.0.1",
    "postcss-loader": "^3.0.0",
    "postcss-preset-env": "^6.7.0",
    "sass-loader": "^7.3.1",
    "style": "0.0.3",
    "style-loader": "^0.23.1",
    "sugarss": "^2.0.0",
    "uglifyjs-webpack-plugin": "^2.2.0",
    "webpack": "^4.39.2",
    "webpack-cli": "^3.3.7",
    "webpack-manifest-plugin": "^2.0.4"
  },
  "dependencies": {
    "@babel/runtime": "^7.6.3",
    "core-js": "^3.3.2",
    "detect-it": "^3.0.5",
    "gifsicle": "^4.0.1",
    "slick-carousel": "^1.8.1"
  },
  "browserslist": [
    "last 2 versions"
  ]
}

Answer 1

我找到了解决方案。

在主js文件中 import "regenerator-runtime/runtime";

添加再生器运行时 npm i regenerator-runtime

谢谢。

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