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webpack.config.js
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webpack.config.js
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const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
// where to start looking for all deps it should bundle
entry: ['@babel/polyfill', './src/js/index.js'],
// where to save our bundle file
output: {
// path needs to be absolute. requires built in node module, 'path'
// dirname gives working absolute path (the one this file is in)
path: path.resolve(__dirname, 'dist'),
filename: 'js/bundle.js'
},
// devServer auto reloads the page when our code changes, but doesn't write the changes to disk
// instead it 'streams' them to the server, so the index.html, bundle.js etc files won't show in
// the file explorer. the bundle.js is injected 'on the fly' into index.html
// running dev or build scripts WILL save the files to disk, however
devServer: {
contentBase: './dist'
},
// plugins allow us to do complex processing of input files
plugins: [
new HtmlWebpackPlugin({
// copy src html into dist folder when bundling and inclue script
filename: 'index.html', // inside dist
template: './src/index.html' // inside src
})
],
//loaders allow us to import (load) different files and process them,
// like converting sass to css or ES6+ to ES5
module: {
rules: [
{
test: /\.js$/, // all js files will use babel loader
exclude: /node_modules/, // except all the js files in node_modules, of course
use: {
loader: 'babel-loader'
}
}
]
}
};