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webpack.config.js
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webpack.config.js
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const HtmlWebpackPlugin = require('html-webpack-plugin');
const path = require('path');
const webpack = require('webpack');
// const webpack = require('webpack')
const mode = '';
const config = {
// this is a preprocessor that maps bundled code into its initial sourced code and other minified files
devtool: 'source-map',
mode: 'development',
// to accept HMR middlewares entry points will be tweaked to be an array or object
entry: {
app: ['./src/App.jsx',],
vendor: ['react', 'react-dom', 'whatwg-fetch', 'react-router-dom', 'react-bootstrap'],
},
// the output filename will be hashed
output: {
path: path.resolve(`${__dirname }/static`),
filename: mode === 'production' ? '[name].[chunkhash].js' : '[name].[hash].js',
},
// bundle splitting and splitting vendor node_modules packages into individual packages
optimization: {
runtimeChunk: 'single',
splitChunks: {
chunks: 'all',
maxInitialRequests: Infinity,
minSize: 0,
// state and define rules that webpack will use while splitting our vendor packages
cacheGroups: {
vendor: {
test: /[\\/]node_modules[\\/]/,
name(module) {
// get the name. E.g. node_modules/packageName/not/this/part.js
// or node_modules/packageName
const packageName = module.context.match(/[\\/]node_modules[\\/](.*?)([\\/]|$)/)[1];
// npm package names are URL-safe, but some servers don't like @ symbols
return `npm.${packageName.replace('@', '')}`;
},
},
},
},
},
resolve: {
modules: [path.resolve(__dirname, './src'), 'node_modules'],
extensions: ['.js', '.jsx', '.json'],
alias: {
reducers: path.resolve(__dirname, './src/reducers')
}
},
plugins: [
new HtmlWebpackPlugin({
template: './static/index.html'
}),
new webpack.HashedModuleIdsPlugin(),// so that file hashes don't change unexpectedly
],
// this plugin is for HMR middlewaress
module: {
rules: [{
test: /\.(js|jsx)?$/,
use: { loader: 'babel-loader' },
exclude: /node_modules/
}]
},
// this one handle the webpark-dev-server port to apis
devServer: {
port: 8080,
contentBase: 'static',
historyApiFallback: true,
proxy: {
'/api/*': {
target: 'http://localhost:3000',
},
},
},
};
module.exports = config;