我正在尝试使用Webpack 2 + React Hot Loader工作,但它似乎没有热重新加载。它正确呈现网页,但只要我对“App.js”文件进行任何更改,它就不会做任何事情。
webpack.config.json
var path = require('path');
var webpack = require('webpack');
module.exports = {
entry: {
'app': [
'react-hot-loader/patch',
path.join(__dirname, 'src/main.js')
]
},
output: {
path: path.join(__dirname, 'build'),
filename: 'bundle.js'
},
module: {
rules: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel-loader',
}
]
}
};
.babelrc
{
"presets": [
["env", {"modules": false}],
"react"
],
"plugins": [
"transform-object-rest-spread"
]
}
的package.json
{
"main": "main.js",
"scripts": {
"dev": "webpack-dev-server --inline --hot"
},
"dependencies": {
"express": "^4.15.2",
"react": "^15.5.4",
"react-dom": "^15.5.4"
},
"devDependencies": {
"babel-core": "^6.24.1",
"babel-loader": "^7.0.0",
"babel-plugin-transform-object-rest-spread": "^6.23.0",
"babel-polyfill": "^6.23.0",
"babel-preset-env": "^1.4.0",
"babel-preset-react": "^6.24.1",
"react-hot-loader": "next",
"webpack": "^2.4.1",
"webpack-dev-server": "^2.4.4"
}
}
我正在通过CLI使用--hot和--inline标志运行webpack-dev-server。
main.js
import React from 'react'
import ReactDOM from 'react-dom'
import { AppContainer } from 'react-hot-loader'
import App from './containers/App'
const render = Component => {
ReactDOM.render(
<AppContainer>
<Component />
</AppContainer>,
document.getElementById('root')
)
}
render(App)
if(module.hot) {
module.hot.accept();
}
App.js
import React, { Component } from 'react'
export default class App extends Component {
render() {
return (
<div>
<div className="container">
<h1>Testing</h1>
</div>
</div>
)
}
}
因此,为了测试它,我将运行yarn dev
,服务器将启动。所有内容都会编译,webpack将输出webpack: Compiled sucessfully
。但是,对App.js所做的任何更改都不会重新加载网页。网页上的控制台本身只输出:
[HMR] Waiting for update signal from WDS...
bundle.js:15580 [WDS] Hot Module Replacement enabled.
我尝试了这里列出的各种方法(https://github.com/webpack/webpack-dev-server/issues/100),但似乎都没有。
答案 0 :(得分:2)
在main.js
尝试更改此内容:
if(module.hot) {
module.hot.accept();
}
到此:
if (module.hot) {
// Enable Webpack hot module replacement for Component
module.hot.accept('./containers/App', () => {
render(App);
});
}
您可以在docs
中看到更详细的示例编辑:
根据文档示例,您需要在render
的回调中调用accept
。
也可以查看webpack config。