我正在尝试使用webpack-dev-server为JS和SCSS文件提供热重新加载功能,但它没有这样做。我一直得到同样的错误:
[WDS] App updated. Recompiling...
[WDS] App hot update...
[HMR] Checking for updates on the server...
[HMR] The following modules couldn't be hot updated: (They would need a full reload!)
[HMR] - 381
[HMR] Nothing hot updated.
[HMR] App is up to date.
我已将/dist/main.css和/dist/main.js文件添加到我的index.html中,其余文件如下:
我的server.js是:
const webpack = require('webpack');
const WebpackDevServer = require('webpack-dev-server');
const config = require('./webpack.config');
new WebpackDevServer(webpack(config), {
publicPath: config.output.publicPath,
hot: true,
historyApiFallback: true
}).listen(3000, 'localhost', function (err, result) {
if (err) {
return console.log(err);
}
console.log('Listening at http://localhost:3000/');
});
我的webpack.config文件是:
const sassLoaders = [
'css-loader?minimize!',
'postcss-loader',
'sass-loader?includePaths[]=' + path.resolve(__dirname, './src/css')
]
module.exports = {
entry: [
'babel-polyfill',
'webpack-dev-server/client?http://localhost:3000',
'webpack/hot/only-dev-server',
path.normalize(__dirname + '/src/js/main'),
path.normalize(__dirname + '/src/css/styles.scss')
],
devtool: 'cheap-module-source-map',
output: {
filename: '[name].js',
path: path.join(__dirname, './dist'),
publicPath: '/dist'
},
module: {
loaders: [
{
loader: 'babel',
test: /\.js$/,
include: [path.resolve(__dirname, 'src', 'js')],
query: {
plugins: ['transform-runtime'],
presets: ['es2015']
}
},
{
test: /\.scss$/,
loader: ExtractTextPlugin.extract('style-loader', sassLoaders.join('!'))
}
]
},
plugins: [
new ExtractTextPlugin('[name].css'),
new webpack.optimize.UglifyJsPlugin({
compress: { warnings: false }
}),
new webpack.HotModuleReplacementPlugin()
],
postcss: [
autoprefixer({
browsers: ['last 2 versions']
})
],
resolve: {
extensions: ['', '.js', '.scss'],
root: [path.join(__dirname, './src')]
}
};
谢谢!
答案 0 :(得分:3)
我正在使用webpack和热重新加载一个使用sass的网站以及我迄今为止学到的东西:
1 - webpack.config.js拥有自己的服务器配置(devServer),因此您不需要创建server.js文件(如果您不想这样做)。
检查我的webpack.config.js文件:
var path = require("path");
var webpack = require("webpack");
var HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
entry: './app/app.js',
devServer: {
inline: true,
port: 3333
},
output: {
path: './',
filename: 'bundle.js'
},
module: {
loaders: [
{
test: /\.js$/,
exclude: [path.resolve(__dirname, 'node_modules')],
loader: 'babel',
query: {
presets: 'es2015',
}
},
{
test: /\.json$/,
loader: 'json-loader'
},
{
test: /\.scss$/,
loader: 'style!css!sass?sourceMap'
},
{ test: /\.jpg$/, loader: "file-loader" },
{ test: /\.png$/, loader: "url-loader?mimetype=image/png" },
{
test: /\.(otf|eot|svg|ttf|woff|woff2)$/,
loader: 'file?name=assets/fonts/[name].[ext]'
},
{
test: /\.html$/,
loader: 'html-loader'
}
]
},
plugins: [
new webpack.HotModuleReplacementPlugin(),
new HtmlWebpackPlugin(
{
title: 'My App',
template: './index.html'
}
)
]
}
2 - 而不是ExtractTextPlugin我使用样式!css!sass加载器(你必须使用npm安装它们):
{
test: /\.scss$/,
loader: 'style!css!sass?sourceMap'
}
然后,我所要做的就是访问http://localhost:3333并且它有效。
您可以复制/粘贴该文件并将其调整到您自己的项目中。我正在试验很多装载机,但只是使用风格!css!sass应该能达到你想要的效果。
答案 1 :(得分:2)
在开发模式下,不要使用ExtractTextPlugin,只需使用style-loader(和SASS加载器)。那将给你SASS / CSS热重装。
对于JavaScript,您需要让模块接受更新,热重新加载并不神奇。有关这方面的更多信息,请访问:https://webpack.github.io/docs/hot-module-replacement.html