我在使用 Typescript 开发前端 (Redux) 和后端 (Express) 时遇到问题。我无法使热重载工作。这是根文件夹中
webpack.config.js
的配置:
const webpack = require('webpack');
const path = require('path');
const { CheckerPlugin } = require('awesome-typescript-loader');
const config = {
cache: true,
mode: 'development',
entry: {
'user': ['./dist/client/User/index', 'webpack-hot-middleware/client'],
'guest': ['./dist/client/Guest/index', 'webpack-hot-middleware/client']
},
plugins: [
new webpack.HotModuleReplacementPlugin(),
new CheckerPlugin()
],
output: {
filename: '[name].bundle.js',
path: path.resolve(__dirname, 'dist'),
publicPath: '/static'
},
devServer: {
contentBase: './dist',
hot: true
},
resolve: {
extensions: ['.tsx', '.ts', '.js', '.jsx']
},
module: {
rules: [
{
test: /\.tsx?$/,
loader: 'awesome-typescript-loader',
exclude: /node_modules/,
include: path.join(__dirname, 'client'),
options: { cacheDirectory: true }
}
]
},
node: { fs: 'empty' }
};
module.exports = config;
和
tsconfig.json
:
{
"compilerOptions": {
"target": "es6",
"module": "commonjs",
"moduleResolution": "node",
"jsx": "react",
"esModuleInterop": true,
"outDir": "dist",
"sourceMap": true,
"baseUrl": "."
},
"include": ["src/**/*.ts", "src/**/*.tsx"],
"exclude": ["node_modules"]
}
在
src
中我分开了两个文件夹client
和server
,我的npm start
脚本是tsc && node dist/server
。在 server/index
中,我声明了 webpack 编译器的使用,如下所示:
import config from '../../webpack.config';
const compiler = webpack(config);
app.use(require('webpack-dev-middleware')(compiler, {
noInfo: true,
publicPath: config.output.publicPath
}));
app.use(require('webpack-hot-middleware')(compiler));
当我启动应用程序时,webpack 会正常构建,但当我在客户端文件中进行更改时,它永远不会构建热重载。我花了一整天但还是很困惑,还不知道如何解决。
对于后端(Express):
npm install nodemon
npm run start
代替
node index.js
或
nodemon index.js
package.json
scripts中替换。对于前端:
npm install --save-dev webpack webpack-dev-server react-refresh @pmmmwh/react-refresh-webpack-plugin
webpack.config.js
中添加react-refresh-webpack
像这样:plugin [ new webpack.HotModuleReplacementPlugin(), new CheckerPlugin() ]