Webpack Hot Reload Issue - reactjs

Question

I was using webpack 3, there was no hot reload issue and then I upgraded to webpack 5.
Webpack version: ^5.50.0, React version: 17.0.2
My hot reload doesnt work properly. When state ve props are changed, it refresh the page and goes to home directory.
Here is my webpack hot config for development;
const webpack = require('webpack') //to access built-in plugins
const HtmlWebpackPlugin = require('html-webpack-plugin') //installed via npm
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
const CopyPlugin = require('copy-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const vendorArray = require('./vendors')
const path = require('path')
const Dotenv = require('dotenv-webpack')
module.exports = {
mode: 'development',
devtool: 'source-map',
entry: {
main: [
'react-hot-loader/patch',
'webpack-dev-server/client?http://0.0.0.0:3002',
'webpack/hot/only-dev-server',
'./src/main.js'
]
},
output: {
path: path.resolve(__dirname, 'dist'),
filename: '[name].[hash:8].js'
},
resolve: {
extensions: ['.js', '.jsx', '.css', '.scss', '.json']
},
module: {
rules: [
{
test: /\.js?$/,
exclude: /(node_modules|bower_components)/,
loader: './config/webpack/style-loader'
},
{
test: /\.m?js$/,
exclude: /(node_modules|bower_components)/,
use: {
loader: 'babel-loader',
options: {
presets: [['#babel/preset-env', { targets: 'defaults' }], '#babel/preset-react'],
plugins: [
'#babel/plugin-transform-runtime',
'#babel/plugin-proposal-class-properties',
'#babel/plugin-proposal-optional-chaining',
'#babel/plugin-proposal-nullish-coalescing-operator',
[
'#babel/plugin-proposal-decorators',
{
legacy: true
}
]
]
}
}
},
{
test: /\.(sa|sc|c)ss$/,
use: [MiniCssExtractPlugin.loader, 'css-loader', 'postcss-loader', 'sass-loader']
},
{
test: /\.(eot|woff|woff2|ttf|svg|png|jpg|gif)([\?]?.*)$/,
type: 'asset/resource'
}
]
},
plugins: [
new webpack.DefinePlugin({
APP_ENV: JSON.stringify('dev')
}),
new HtmlWebpackPlugin({
template: './public/index.html',
templateParameters: {
recaptchaSiteKey: '6LfbRrEZAAAAAL1EiyUSq1yzEw1xqleak2xC2pzi',
intranetLogin: true
}
}),
new MiniCssExtractPlugin(),
new Dotenv({
path: path.resolve(__dirname, './../../.env.test')
})
]
}
And here is server.js
var webpack = require('webpack')
var config = require('./config/webpack/webpack-hot.config')
var WebpackDevServer = require('webpack-dev-server')
const stats = {
assets: true,
children: false,
chunks: false,
hash: false,
modules: false,
publicPath: false,
timings: true,
version: false,
warnings: true,
colors: { green: '\u001b[32m' }
}
config.plugins.push(
new webpack.DefinePlugin({
'process.env': {
NODE_ENV: JSON.stringify('development'),
TARGET: '"web"'
}
})
)
process.env.BABEL_ENV = 'dev'
new WebpackDevServer(webpack(config), {
hot: true,
contentBase: __dirname,
publicPath: '/',
compress: true,
historyApiFallback: true,
stats: stats,
port: 3002,
host: '0.0.0.0',
proxy: {
'/auth/*': {
target: 'blablabla',
secure: false,
onProxyRes: removeCookiePath,
changeOrigin: true
},
'/api/cti/*': {
target: 'blablabla',
secure: false,
onProxyRes: removeCookiePath,
changeOrigin: true
},
'/api/abc/*': {
secure: false,
target: 'https://blabla',
changeOrigin: true
}
}
}).listen(3002, '0.0.0.0', function(err, result) {
if (err) {
console.log(err)
}
console.log('Listening at http://127.0.0.1:3002')
console.log('webpack is bundling, please wait...')
})

Answer 1

Property contenBase, which you apply, is no longer supported in Webpack 5. Instead use static:
devServer: {
port: 8080,
hot: "only",
static: {
directory: path.join(__dirname, './'),
serveIndex: true,
},
},