您好,我目前正在尝试学习如何使用express和webpacks HMR,每次我更新并保存文件时都会给我错误:
"以下模块无法热更新:(需要完全重新加载)" " ./应用/组件/ App.js"
我当前的配置文件有问题吗?
所以我有一个像这样的目录结构:
todos
|
app
|
package.son
server.js
webpack.config.js
我有一个webpack.config.js文件和一个如下所示的server.js文件:
var path = require('path');
var webpack = require('webpack');
module.exports = {
context: path.join(__dirname + "/app"),
entry: ['./index'],
output: {
path: "/bundle",
publicPath: '/static/',
filename: "bundle.js"
},
module: {
loaders: [
{
test: /\.jsx?$/,
exclude: /(node_modules|bower_components)/,
loader: 'babel',
query: {
presets: ['react', 'es2015']
}
}
]
},
resolve: {
extensions: ['', '.js', '.jsx']
}
};
server.js
var webpack = require('webpack')
var webpackDevMiddleware = require('webpack-dev-middleware')
var webpackHotMiddleware = require('webpack-hot-middleware')
var config = require('./webpack.config')
var app = new (require('express'))()
var port = 3000
var compiler = webpack(config)
app.use(webpackDevMiddleware(compiler, { noInfo: true, publicPath: config.output.publicPath }))
app.use(webpackHotMiddleware(compiler))
app.get("/", function(req, res) {
res.sendFile(__dirname + '/app/index.html')
})
app.listen(port, function(error) {
if (error) {
console.error(error)
} else {
console.info("==> Listening on port %s. Open up http://localhost:%s/ in your browser.", port, port)
}
})
答案 0 :(得分:2)
您是否尝试过接受该模块?在Webpack HMR documentation中,它说明如下:
只有在您“接受”模块时才能更新模块。所以你需要module.hot.accept父母或父母的父母的模块。例如,路由器或子视图将是一个好地方。
在index.js文件或希望HMR重新加载的模块中尝试此操作:
if (module.hot) {
module.hot.accept();
}