我有webpack-dev-middleware
和webpack-hot-middleware
的简单配置,它使用Hot reload(HMR)with react。
一切正常,但我对代码所做的每一次更改都需要2到3-4秒!直到我在浏览器中看到它。 难道我做错了什么 ?它应该是这样的?
我的代码相当大,我的捆绑缩小到841kb(200kb gzip)这是原因吗?代码库越大,捆绑创建速度越慢?
Express Server:
var webpack = require('webpack');
var webpackConfig = require('./webpack.hot.config');
var compiler = webpack(webpackConfig);
app.use(require("webpack-dev-middleware")(compiler, {
noInfo: true,
publicPath: webpackConfig.output.publicPath,
watchOptions: {
poll: true
}
}));
app.use(require("webpack-hot-middleware")(compiler, {
log: console.log,
path: '/__webpack_hmr',
heartbeat: 10 * 1000
}));
webpack.hot.config.js
const path = require('path');
const webpack = require('webpack');
module.exports = {
context: __dirname,
entry: [
'webpack-hot-middleware/client?path=/__webpack_hmr&timeout=20000',
'./src/js/index'
],
module: {
loaders: [{
test: /\.jsx?$/,
include: path.join(__dirname, 'src/js'),
//exclude: /node_modules/,
loader: 'react-hot!babel'
},
{
// Test expects a RegExp! Note the slashes!
test: /\.css$/,
loaders: ['style', 'css'],
// Include accepts either a path or an array of paths.
include: path.join(__dirname, 'src/css')
}
]
},
resolve: {
extensions: ['', '.js', '.jsx']
},
output: {
path: __dirname + '/public',
publicPath: '/',
filename: 'js/app.js'
},
plugins: [
new webpack.optimize.OccurenceOrderPlugin(),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoErrorsPlugin()
]
};
当我在代码中更改内容时,这就是我在控制台中获得的内容:
[HMR] App is up to date.
app.js:73223 [HMR] bundle rebuilding
app.js:73226 [HMR] bundle rebuilt in 335ms
app.js:73289 [HMR] Checking for updates on the server...
app.js:73362 [HMR] Updated modules:
app.js:73364 [HMR] - ./src/js/components/header.jsx
app.js:73369 [HMR] App is up to date.
答案 0 :(得分:4)
考虑在中间件中将轮询切换为false。我发现轮询可能是CPU密集型的。
在您的webpack配置中,您可能还想尝试添加devtool: false
以避免创建源地图。
答案 1 :(得分:1)
您应该启用缓存:
...
plugins: [
new webpack.optimize.OccurenceOrderPlugin(),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoErrorsPlugin()
],
cache: true
};
答案 2 :(得分:0)
专业提示:将 webpack.config.js 中的模式更改为开发。如果不使用此属性,则默认为生产状态,这意味着它会减慢生产速度,并使您的热重装工作陷入困境。
module.exports = {
mode: 'development'
};