I am using that kind of webpack.config.js. Please note this is a version I used with Phoenix 1.4 pre release. I also use webpack-jquery-ui, nestedSortable that are NOT needed by bootstrap 4. I also use font awesome in this config.
I create a vendor.js, which contains most of vendors lib… while app.js contains my specific code.
$, jQuery, popper.js are loaded by Webpack.ProvidePlugin
Any other js libs are put inside assets/vendor
I don’t really enjoy loading jQuery, but it’s required by Bootstrap 4.
const Webpack = require('webpack');
const path = require('path');
const glob = require('glob');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const VENDOR_LIBS = [
'jquery', 'popper.js', 'webpack-jquery-ui', 'nestedSortable'
]
module.exports = (env, options) => ({
optimization: {
minimizer: [
new UglifyJsPlugin({ cache: true, parallel: true, sourceMap: false }),
new OptimizeCSSAssetsPlugin({}),
]
},
entry: {
app: './js/app.js',
vendor: VENDOR_LIBS.concat(glob.sync('./vendor/**/*.js')),
},
output: {
filename: 'js/[name].js',
path: path.resolve(__dirname, '../priv/static'),
},
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader',
}
},
{
test: /\.(scss|css)$/,
use: [MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader'],
},
// Load images
{
test: /\.(png|svg|jpg|gif)(\?.*$|$)/,
loader: 'url-loader?limit=10000',
},
// Load fonts
{
test: /\.woff(2)?(\?v=[0-9]\.[0-9]\.[0-9])?(\?.*$|$)/,
use: 'url-loader?&limit=10000&name=/fonts/[name].[ext]',
},
{
test: /\.(eot|ttf|otf)?(\?.*$|$)/,
loader: 'file-loader?&limit=10000&name=/fonts/[name].[ext]',
},
]
},
plugins: [
new MiniCssExtractPlugin({ filename: './css/app.css' }),
new CopyWebpackPlugin([{ from: 'static/', to: './' }]),
new Webpack.ProvidePlugin({ // inject ES5 modules as global vars
$: 'jquery',
jQuery: 'jquery', 'window.jQuery': 'jquery',
Popper: ['popper.js', 'default'],
}),
],
optimization: {
// https://github.com/webpack/webpack/issues/6357
splitChunks: {
cacheGroups: {
vendor: {
test: /jquery|webpack-jquery-ui|popper|font-awesome/,
chunks: "initial",
name: "vendor",
enforce: true
}
}
},
minimizer: [
new UglifyJsPlugin({ cache: true, parallel: true, sourceMap: false }),
new OptimizeCSSAssetsPlugin({})
],
},
});
After this, I add to my assets/js/app.js to load phoenix and bootstrap js.
import "phoenix_html"
import "../node_modules/bootstrap/dist/js/bootstrap.min.js"