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webpack.config.js
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webpack.config.js
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// Install webpack & webpack cli and get the path module and set mode, entry and output
// npm install webpack webpack-cli --save-dev
const myPath = require('path'); // Having the path module to set path for entry & output if we want outside default
const HtmlWebpackPlugin = require('html-webpack-plugin'); // Plugin to automatically create the index.html file in the /dist directory.
// npm install --save lodash (optional)
// const { template } = require('lodash');
module.exports = {
// webpack mode, entry and output config:
// in package.json add (under) "scripts":{ "build": "webpack"}
// Now, in the CLI run: [ $ npm run build ] to build your source.
mode: 'production',
// target:"es5",
entry: { mymain: myPath.resolve(__dirname, 'src/index.js') },
output: {
path: myPath.resolve(__dirname, 'dist'),
filename: '[name].bundle.js',
clean: true,
},
// enabling source-map from dist to src code to debug
devtool: 'source-map',
// webpack css loaders (style-loder, css-loader) config:
// npm install --save-dev style-loader css-loader
module: {
rules: [
{
test: /\.css$/i,
use: ['style-loader', 'css-loader'],
},
{
test: /\.(png|svg|jpg|jpeg|gif)$/i,
type: 'asset/resource',
},
// https://webpack.js.org/loaders/babel-loader/
// npm install -D babel-loader @babel/core @babel/preset-env
{
test: /\.(?:js|mjs|cjs)$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader',
options: {
presets: [
['@babel/preset-env', { targets: 'defaults' }],
],
},
},
},
],
},
// webpack Html plugin for auto generating HTML under dist
// npm install --save-dev html-webpack-plugin
plugins: [
new HtmlWebpackPlugin({
template: './src/index.html',
}),
],
// webpack dev server to setup local dev server
// npm install --save-dev webpack-dev-server
// And, in package.json add (under) "scripts": { start: "webpack serve --open"}
// Now, in the CLI run: [ $ npm start ] to start the local dev server at: http://localhost:8080/.
devServer: {
static: './dist',
},
optimization: {
runtimeChunk: 'single',
},
};