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我不确定为什么我的前端没有在热模式下运行。我试图尽可能地解耦前端和后端。唯一将两者联系起来的是我使用 django 的webpack_loader应用程序来加载webpack构建以加载到模板 ( index.html) 中。

我的后端在 Django 中，目前正在运行http://127.0.0.1:8000/。

我的前端托管在localhost:8080

我的热模式 devServer 已打开0.0.0.0:8080

我尝试更改一些前端并保存它以查看会发生什么并且前端没有任何更新。在我的开发人员工具中，我看到了这一点：

[HMR] Update check failed: SyntaxError: Unexpected token <
    at Object.parse (native)
    at XMLHttpRequest.request.onreadystatechange (http://localhost:8000/static/js/main.js:44:33)

这是我的 npm 脚本：

"scripts": {
    "watch-client": "node ./node_modules/webpack/bin/webpack.js --verbose --colors --display-error-details --config webpack.watch.js && node ./node_modules/webpack-dev-server/bin/webpack-dev-server.js --config webpack.watch.js",
    "watch": "npm run watch-client"
  },

webpack.config.js：

var path = require('path')
var webpack = require('webpack');
var ExtractTextPlugin = require("extract-text-webpack-plugin");

module.exports = {
    entry: [
        './app/index.js'
    ],
    output: {
        path: path.resolve(__dirname, 'public'),
        publicPath: '/js/',
        filename: 'main.js'
    },
    devtool: 'eval',
    debug: true,
    module: {
        loaders: [
            { test: /\.json$/, loader: 'json-loader' },
            { test: /\.jsx$/, loader: 'jsx-loader' },
            { test: /\.es6$/, exclude: /node_modules/, loader: 'babel-loader?stage=0&optional=runtime'},
            { test: /\.js$/, exclude: /node_modules/, loader: 'babel-loader?stage=0&optional=runtime'},
            { test: /\.less$/, exclude: /node_modules/, loader: ExtractTextPlugin.extract("style-loader", "css-loader")},
            { test: /\.css$/, exclude: /node_modules/, loader: 'style-loader!css-loader' }
        ]
    },
    plugins: [
        new ExtractTextPlugin('style.css', {
            allChunks: true
        }),
        new webpack.optimize.CommonsChunkPlugin('common.js'),
    ]
};

webpack.watch.js：

var Webpack = require("webpack");
var ExtractTextPlugin = require("extract-text-webpack-plugin");
var config = require("./webpack.config.js");
var BundleTracker = require('webpack-bundle-tracker');

var port = process.env.WEBPACK_PORT || 8080;
var host = process.env.HOST || 'localhost';

// add hot loader
config.entry.unshift(
    "webpack-dev-server/client?http://" + host + ":" + port,
    "webpack/hot/only-dev-server"   // only prevents reload on syntax errors
);

config.plugins = [
    new ExtractTextPlugin("style.css", {
        allChunks: true
    }),
    new Webpack.HotModuleReplacementPlugin(),
    new BundleTracker({filename: './webpack-stats.json'})
];

config.module.loaders = [
    { test: /\.json$/, loader: 'json-loader' },
    { test: /\.jsx$/, loader: 'jsx-loader' },
    { test: /\.es6$/, exclude: /node_modules/, loader: 'babel-loader?stage=0&optional=runtime'},
    { test: /\.js$/, exclude: /node_modules/, loader: 'babel-loader?stage=0&optional=runtime'},
    { test: /\.less$/, exclude: /node_modules/, loader: ExtractTextPlugin.extract("style-loader", "css-loader")},
    { test: /\.css$/, exclude: /node_modules/, loader: 'style-loader!css-loader' }
];

// dev server for react hot loader
config.devServer = {
    publicPath:  "/js/",
    filename: 'main.js',
    contentBase: "./public",
    hot:         true,
    inline:      true,
    lazy:        false,
    quiet:       true,
    noInfo:      true,
    headers:     {"Access-Control-Allow-Origin": "*"},
    stats:       {colors: true},
    host:        "0.0.0.0",
    port:        port
};

module.exports = config;
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