Webpack 开发服务器配置 - contentBase 不工作

Question

我正在尝试设置一个 webpack 开发服务器，但由于某种原因，我运行遇到了错误。

[webpack-cli] Invalid options object. Dev Server has been initialized using an options object that does not match the API schema. options has an unknown property 'contentBase'. These properties are valid: object { allowedHosts?, bonjour?, client?, compress?, devMiddleware?, headers?, historyApiFallback?, host?, hot?, http2?, https?, ipc?, liveReload?, magicHtml?, onAfterSetupMiddleware?, onBeforeSetupMiddleware?, onListening?, open?, port?, proxy?, server?, setupExitSignals?, static?, watchFiles?, webSocketServer? }

我确实在全局安装了所有需要的包并尝试了一些其他建议，但我无法让它工作。

这是配置：

const path = require('path');

module.exports = {
    entry: './app/Main.js',
    output: {
        publicPath: '/',
        path: path.resolve(__dirname, 'app'),
        filename: 'bundled.js',
    },
    mode: 'development',
    devtool: 'source-map',
    devServer: {
        port: 3000,
        contentBase: path.join(__dirname, 'app'),
        hot: true,
        historyApiFallback: { index: 'index.html' },
    },
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /(node_modules)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: [
                            '@babel/preset-react',
                            ['@babel/preset-env', { targets: { node: '12' } }],
                        ],
                    },
                },
            },
        ],
    },
};

我的文件：
enter image description here

期待您的回答！谢谢

Answer 1

我可以假设错误是在迁移到最新版本 Webpack/DevServer 后出现的，他们做了一些重大更改，包括 devServer 设置。特别是对于这个问题，请尝试使用此代码而不是 contentBase:

  devServer: {
    static: {
      directory: path.resolve(__dirname, 'app'),
    },
   ...

这是可以提供帮助的完整迁移指南https://github.com/webpack/webpack-dev-server/blob/master/migration-v4.md

Webpack 开发服务器配置 - contentBase 不工作

Webpack Dev Server Config - contentBase not working

node.js

reactjs

webpack

webpack-dev-server