Babel 7和Webpack 4的配置

package.json

    ...
    "scripts": {
        "start": "webpack-dev-server --env.dev",
        "build": "webpack --env.prod",
    },
    "keywords": [],
    "author": "",
    "license": "ISC",
    "devDependencies": {
        "@babel/core": "^7.0.0",
        "@babel/plugin-proposal-class-properties": "^7.0.0",
        "@babel/preset-env": "^7.0.0",
        "@babel/preset-react": "^7.0.0",
        "@babel/register": "^7.0.0",
        "babel-loader": "^8.0.0",
        ...
        "webpack": "^4.17.2",
        "webpack-cli": "^3.1.0",
        "webpack-config-utils": "^2.3.1",
        "webpack-dev-server": "^3.1.8"

.babelrc

{
    "presets": ["@babel/preset-env", "@babel/preset-react"],
    "plugins": ["@babel/plugin-proposal-class-properties"]
}

webpack.config.babel.js

import webpack from 'webpack';
import { resolve } from 'path';

import { getIfUtils, removeEmpty } from 'webpack-config-utils';

export default env => {
    const { ifProd, ifNotProd } = getIfUtils(env);

    return {
        mode: ifProd('production', 'development'),
        devtool: ifNotProd('cheap-module-source-map'),
        output: {
            path: resolve(__dirname, ifProd('prod', 'dev')),
            filename: 'bundle.js'
        },

对于TypeScript:直接从https://webpack.js.org/configuration/configuration-languages/

npm install --save-dev typescript ts-node @types/node @types/webpack
# and, if using webpack-dev-server
npm install --save-dev @types/webpack-dev-server

然后继续写你的，例如: webpack.config.ts

import path from 'path';
import webpack from 'webpack';

const config: webpack.Configuration = {
  mode: 'production',
  entry: './foo.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'foo.bundle.js'
  }
};

export default config;

如果你的目标不是commonjs(这是一个要求，因为它依赖于ts-node)，你可以使用一个插件来为webpack配置一个单独的tsconfig文件。

试着将你的配置命名为webpack.config.babel.js。你应该在项目中包含通音寄存器。在react-router-bootstrap的例子。

Webpack依赖于内部的解释来实现此工作。

Babel 7和Webpack 4的配置

package.json

    ...
    "scripts": {
        "start": "webpack-dev-server --env.dev",
        "build": "webpack --env.prod",
    },
    "keywords": [],
    "author": "",
    "license": "ISC",
    "devDependencies": {
        "@babel/core": "^7.0.0",
        "@babel/plugin-proposal-class-properties": "^7.0.0",
        "@babel/preset-env": "^7.0.0",
        "@babel/preset-react": "^7.0.0",
        "@babel/register": "^7.0.0",
        "babel-loader": "^8.0.0",
        ...
        "webpack": "^4.17.2",
        "webpack-cli": "^3.1.0",
        "webpack-config-utils": "^2.3.1",
        "webpack-dev-server": "^3.1.8"

.babelrc

{
    "presets": ["@babel/preset-env", "@babel/preset-react"],
    "plugins": ["@babel/plugin-proposal-class-properties"]
}

webpack.config.babel.js

import webpack from 'webpack';
import { resolve } from 'path';

import { getIfUtils, removeEmpty } from 'webpack-config-utils';

export default env => {
    const { ifProd, ifNotProd } = getIfUtils(env);

    return {
        mode: ifProd('production', 'development'),
        devtool: ifNotProd('cheap-module-source-map'),
        output: {
            path: resolve(__dirname, ifProd('prod', 'dev')),
            filename: 'bundle.js'
        },

没有足够的代表来评论，但我想为任何TypeScript用户添加一个类似于上面@Sandrik的解决方案

我有两个脚本，我使用指向webpack配置(JS文件)，包含ES6语法。

"start-dev": "./node_modules/.bin/ts-node ./node_modules/webpack-dev-server/bin/webpack-dev-server.js——config. /webpack/webpack.config.dev.js"

and

"./node_modules/.bin/ts-node ./node_modules/webpack/bin/webpack.js——config webpack/webpack.config.js"

使用Webpack 4和Babel 7

要设置webpack配置文件以使用ES2015需要Babel:

安装开发依赖项:

npm i -D  webpack \
          webpack-cli \
          webpack-dev-server \
          @babel/core \
          @babel/register \
          @babel/preset-env
npm i -D  html-webpack-plugin

创建一个.babelrc文件:

{
  "presets": ["@babel/preset-env"]
}

创建webpack配置，webpack.config.babel.js:

import { resolve as _resolve } from 'path';
import HtmlWebpackPlugin from 'html-webpack-plugin';

const config = {
  mode: 'development',
  devServer: {
    contentBase: './dist'
  },
  plugins: [
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: 'src/index.html'
    })
  ],
  resolve: {
    modules: [_resolve(__dirname, './src'), 'node_modules']
  }
};

export default config;

在package.json中创建脚本:

  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "build": "webpack",
    "start": "webpack-dev-server --open"
  },

运行npm Run build和npm start。

webpack配置基于以下目录结构的示例项目:

├── README.md
├── package-lock.json
├── package.json
├── src
│   ├── Greeter.js
│   ├── index.html
│   └── index.js
└── webpack.config.babel.js

示例项目:Webpack配置语言使用Babel