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'
        },

另一种方法是这样写一个npm脚本:"webpack": "babel-node ./node_modules/webpack/bin/webpack"，然后像这样运行:

作为@bebraw建议的替代方案，您可以使用ES6+语法创建一个JavaScript自动化脚本:

// tools/bundle.js

import webpack from 'webpack';
import webpackConfig from './webpack.config.js'; // <-- Contains ES6+

const bundler = webpack(webpackConfig);

bundler.run(...);

用巴别塔来执行:

$ babel-node tools/bundle

附注:当你需要实现更复杂的构建步骤时，通过JavaScript API调用webpack可能是一个更好的方法(比通过命令行调用它)。例如，在服务器端bundle准备好后，启动Node.js应用服务器，在Node.js服务器启动后，启动BrowserSync开发服务器。

参见:

React Starter Kit(包。Json /scripts, tools/bundle.js, tools/webpack.config.js) React静态样板(run.js, webpack.config.js，节点运行) 你可能不需要Gulp.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"

还有一种方法是为node使用require参数:

Node -r babel-register ./node_modules/webpack/bin/webpack . xml

在electron-react-boilerplate中可以找到这种方法，看看build-main和build-renderer脚本。

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。