javascript - IE 11(Webpack、VueJS)上可能出现传播错误？

Question

我在 IE 11 上遇到此错误:

这是我的 webpack 和 babel 配置:

webpack配置

const path = require('path');
const webpack = require('webpack');
const { VueLoaderPlugin } = require('vue-loader');
const StylishWebpackPlugin = require('webpack-stylish');
const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');

const withLogRocket = process.argv.includes('--with-logrocket');
if (withLogRocket) {
  /* eslint-disable no-console */
  console.info('-> Building with LogRocket enabled.');
  /* eslint-enable */
}

// Base webpack configuration for all environments.
module.exports = {
  context: path.dirname(__dirname),
  entry: {
    app: './src/main.js',
  },
  target: 'web',

  output: {
    filename: '[name].[contenthash].js',
    hashDigestLength: 8,
  },

  resolve: {
    extensions: ['.ts', '.js', '.vue'],
    alias: {
      '@': path.resolve(__dirname, '../src'),
    },
  },

  module: {
    rules: [
      {
        test: /\.js/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
      {
        test: /\.ts$/,
        exclude: /node_modules/,
        use: [
          {
            loader: 'babel-loader',
          },
          {
            loader: 'ts-loader',
            options: {
              transpileOnly: true,
            },
          },
        ],
      },
      {
        test: /\.vue$/,
        loader: 'vue-loader',
      },
      {
        test: /\.css$/,
        use: [
          'style-loader',
          'css-loader',
        ],
      },
      {
        test: /\.scss$/,
        use: [
          'style-loader',
          'css-loader',
          'sass-loader',
        ],
      },
    ],
  },

  stats: 'errors-only',

  plugins: [
    new VueLoaderPlugin(),
    new ForkTsCheckerWebpackPlugin({
      tslint: true,
      reportFiles: ['src/**/*.ts'],
    }),
    new StylishWebpackPlugin(),
    new webpack.DefinePlugin({
      USE_LOGROCKET: withLogRocket,
    }),
  ],
};

babelrc 文件

{
    "presets": ["env"],
    "plugins": [
        "transform-es2015-destructuring",
        "transform-object-rest-spread"
    ]
}

我不太确定这是否是由于 ...sources传播或其他。我很确定我有babel-transform-object-rest-spread包但我仍然不明白为什么会出现此错误，我还使用了 babel-preset-env 。正如您在配置中看到的，我正在运行一个纯 JS(VueJS、Typescript)应用程序。我读过很多关于使用 polyfill 等的文章，但它并没有帮助我让我们的应用程序在 IE11 上运行。

Answer 1

您正在使用 env 预设，但从未定义 Babel 应该为其生成代码的环境(因此我假设在这种情况下不支持 IE 11)。

Without any configuration options, babel-preset-env behaves exactly the same as babel-preset-latest (or babel-preset-es2015, babel-preset-es2016, and babel-preset-es2017 together).

因此，只需添加将 targets 属性设置为类似内容的选项对象

"browsers": [ "last 1 version", "ie >= 11" ]

像这样:

{
    "presets": ["env", {
      "targets": {
        "browsers": [ "last 1 version", "ie >= 11" ]
      }
    }],
    "plugins": [
        "transform-es2015-destructuring",
        "transform-object-rest-spread"
    ]
}

我还强烈建议您尽快切换到 Babel 7。