未捕获错误:[HMR]热模块更换已禁用

Question

我用webpack我的构建这没有任何问题使用作品的webpack-dev-server(npm run watch),但是当我尝试创建一个生产版本(npm run build)我似乎获得错误的控制台,当我尝试加载网页和什么都没有显示出来在屏幕上.

未捕获错误:[HMR]热模块更换已禁用.

我有几个问题:

1. 我对使用的理解Hot Module Replacement是它的设计是为了在开发过程中使生活更轻松,它不应该用于生产部署.那是对的吗？

2. 鉴于以下情况,为什么Hot Module Replacement要使用？我不知道是什么驱使它.

3. 什么是生产构建的最佳实践,我应该webpack为prod和dev 单独配置吗？理想情况下,我想纯粹使用单个配置来简化维护.

的package.json

{
  // ...
  "scripts": {
    "build": "webpack --progress --colors --production",
    "watch": "webpack-dev-server --inline --hot --progress --colors"
  },
  "dependencies": {
    "bootstrap": "^3.3.6",
    "bootstrap-sass": "^3.3.6",
    "bootstrap-webpack": "0.0.5",
    "extract-text-webpack-plugin": "^1.0.1",
    "html-webpack-plugin": "^2.15.0",
    "jquery": "^2.2.3",
    "node-sass": "^3.4.2",
    "react": "^15.0.1",
    "react-bootstrap": "^0.28.5",
    "react-dom": "^15.0.1",
    "react-redux": "^4.4.1",
    "react-router": "^2.0.1",
    "react-router-redux": "^4.0.1",
    "redux": "^3.3.1",
    "redux-thunk": "^2.0.1",
    "webpack": "^1.12.14"
  },
  "devDependencies": {
    "babel-core": "^6.7.4",
    "babel-loader": "^6.2.4",
    "babel-preset-es2015": "^6.6.0",
    "babel-preset-react": "^6.5.0",
    "css-loader": "^0.23.1",
    "exports-loader": "^0.6.3",
    "file-loader": "^0.8.5",
    "imports-loader": "^0.6.5",
    "less": "^2.6.1",
    "less-loader": "^2.2.3",
    "redux-devtools": "^3.2.0",
    "redux-logger": "^2.6.1",
    "sass-loader": "^3.2.0",
    "style-loader": "^0.13.1",
    "url-loader": "^0.5.7",
    "webpack-dev-server": "^1.14.1"
  }
}

webpack.config.js

var webpack = require('webpack');
var htmlWebpackPlugin = require('html-webpack-plugin');
var path = require('path');

module.exports = {
    entry: [
        'webpack/hot/only-dev-server',
        path.resolve(__dirname, 'app/index.js')
    ],
    output: {
        path: path.resolve(__dirname, 'public'),
        filename: 'bundle.js'
    },
    module: {
        loaders: [
            { test: /\.jsx?$/, exclude: /node_modules/, loader: 'babel', query: { presets: [ 'es2015', 'react' ] } },
            { test: /\.scss$/, loader: 'style!css!sass?includePaths[]=' + path.resolve(__dirname, './node_modules/bootstrap-sass/assets/stylesheets/') },
            { test: /\.(ttf|eot|svg|woff(2)?)(\?[a-z0-9]+)?$/, loader: 'file' }
        ]
    },
    resolve: {
        modulesDirectories: ['node_modules']
    },
    plugins: [
        new webpack.NoErrorsPlugin(),
        new htmlWebpackPlugin({
            filename: 'index.html',
            template: './index.html',
            inject: false
        }),
        new webpack.ProvidePlugin({
            $: "jquery",
            jQuery: "jquery"
        }),
        new webpack.optimize.OccurenceOrderPlugin()
    ]
};

Answer 1

您需要启用HMR插件.将HotModuleReplacementPlugin添加到webpack.config中的plugins数组中.您可以为开发和生产提供单独的webpack.config.

就像是

 plugins: [
    new webpack.NoErrorsPlugin(),
    new htmlWebpackPlugin({
        filename: 'index.html',
        template: './index.html',
        inject: false
    }),
    new webpack.ProvidePlugin({
        $: "jquery",
        jQuery: "jquery"
    }),
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.HotModuleReplacementPlugin()
]

Answer 2

在生产版本中包含热加载位并不是一个特别好的主意。它们在那里实际上毫无用处，只会让你的文件大小膨胀。

关于如何处理这个问题有多种策略。有些人将每个文件的 webpack 配置分开，然后通过--config. 我更喜欢通过 npm 维护单个文件和分支。我使用webpack-merge在分支之间共享配置（免责声明：我是作者）。