Question

我最近升级到webpack 4，并进行了更改webpack.config.js，但由于某些原因，尽管页面是自动刷新的，但更改未反映在页面中。我是webpack 4的新手。

webpack.config.js：

const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const CompressionPlugin = require("compression-webpack-plugin");
const webpack = require('webpack');

module.exports = {
    target: "web",
    entry: [
        "whatwg-fetch",
        'webpack-dev-server/client',
        'webpack/hot/only-dev-server',
        'babel-polyfill',
        "./src/index.js"
        ],
    output: {
        path: path.resolve(__dirname, "/build/"),
        publicPath: "/",
        filename: "bundle.js"
        //make sure port 8090 is used when launching webpack-dev-server
    },
    plugins: [new HtmlWebpackPlugin({
        template: "index.html"
    }),
    new CompressionPlugin({
        asset: "[path].gz[query]",
        algorithm: "gzip",
        test: /\.js$|\.jsx$|\.css$|\.html$/,
        threshold: 10240,
        minRatio: 0.8
    }),
    new webpack.HotModuleReplacementPlugin(),
    // enable HMR globally

    new webpack.NoEmitOnErrorsPlugin()
    ],
    module: {
        rules: [
            {
                //tell webpack to use jsx-loader for all *.jsx and *.js files
                test: /\.(js|jsx)$/,
                exclude: /node_modules/,
                loader: "babel-loader"
            },
            {
                test: /\.css$/,
                loader: "style-loader!css-loader"
            },
            {
                test: /\.(png|jpg|jpeg|gif|woff|woff2|svg)$/,
                loader: 'url-loader?limit=100000'
            },
            {
                test: /\.(eot|ttf)$/,
                loader: "file-loader"  
            },
            {
                test: /\.html$/,
                exclude: /node_modules/,
                loader: 'html-loader'
            },
            {
                test: /\.scss$/,
                loaders: ["style-loader", "css-loader", "sass-loader"]
            }
        ]
    },
    resolve: {
        modules: [
            path.resolve("./src"),
            path.resolve("./node_modules")
        ],
        extensions: [".js", ".jsx"]
    },
    devServer: {
        watchOptions: {
        // Needed for Windows Subsystem for Linux dev environment:
            poll: true
        },
        contentBase: "/build"
    },
    devtool: "cheap-module-eval-source-map",
    node: {
        child_process : "empty",
        fs: "empty"
    }
};

npm启动脚本：

“开始”：“ webpack-dev-server --config webpack.config.js-模式开发--display-error-details --watch --watch-polling --progress --colors --host = 0.0.0.0 --port 8090 --history-api-fallback“

webpack库的

：

“ webpack”：“ ^ 4.15.0”， “ webpack-cli”：“ ^ 3.0.8”， “ webpack-dev-server”：“ ^ 3.1.4”

index.html：

<html>

<head>
    <link href="https://fonts.googleapis.com/css?family=Cabin+Sketch" rel="stylesheet">
</head>

<body>
    <div id="App">
        <!-- this is where the root react component will get rendered -->
    </div>
    <script src="https://use.fontawesome.com/80fe1399d9.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

    <script type="text/javascript" src="build/bundle.js"></script></body>

</html>

webpack 4不提供最新更改

0 个答案: