webpack.config.js

const Encore = require("@symfony/webpack-encore");

// Manually configure the runtime environment if not already configured yet by the "encore" command.
// It's useful when you use tools that rely on webpack.config.js file.
if (!Encore.isRuntimeEnvironmentConfigured()) {
    Encore.configureRuntimeEnvironment(process.env.NODE_ENV || "dev");
}

Encore
    // directory where compiled assets will be stored
    .setOutputPath("public/build/")
    // public path used by the web server to access the output path
    .setPublicPath("/build")
    // only needed for CDN's or sub-directory deploy
    //.setManifestKeyPrefix("build/")

    /*
     * ENTRY CONFIG
     *
     * Each entry will result in one JavaScript file (e.g. app.js)
     * and one CSS file (e.g. app.css) if your JavaScript imports CSS.
     */
    .addEntry("js/main", "./assets/js/main.js")
    .addEntry("js/sheet", "./assets/js/sheet.js")
    .addEntry("js/dialog", "./assets/js/dialog.js")

    .addStyleEntry("css/main", "./assets/scss/main.scss")
    .addStyleEntry("css/sheet", "./assets/scss/sheet.scss")
    .addStyleEntry("css/dialog", "./assets/scss/dialog.scss")

    // enables the Symfony UX Stimulus bridge (used in assets/bootstrap.js)
    // .enableStimulusBridge("./assets/controllers.json")

    // When enabled, Webpack "splits" your files into smaller pieces for greater optimization.
    .splitEntryChunks()

    // will require an extra script tag for runtime.js
    // but, you probably want this, unless you're building a single-page app
    .enableSingleRuntimeChunk()

    /*
     * FEATURE CONFIG
     *
     * Enable & configure other features below. For a full
     * list of features, see:
     * https://symfony.com/doc/current/frontend.html#adding-more-features
     */
    .cleanupOutputBeforeBuild()
    .enableBuildNotifications()
    // .enableSourceMaps(!Encore.isProduction())
    .enableSourceMaps(true)
    // enables hashed filenames (e.g. app.abc123.css)
    .enableVersioning(Encore.isProduction())

    .configureBabel((config) => {
        config.plugins.push("@babel/plugin-proposal-class-properties");
    // }, {
    //     useBuiltIns: "usage",
    //     corejs: 3
    })

    // enables @babel/preset-env polyfills
    // .configureBabelPresetEnv((config) => {
    //     config.useBuiltIns = "usage";
    //     config.corejs = 3;
    // })

    // enables Sass/SCSS support
    .enableSassLoader()
    .enablePostCssLoader()

    .copyFiles({
        from: "./assets/fonts",
        to: "fonts/[path][name].[ext]"
    })
    // TODO: remove these two. Replace img with Entity and data with Controller.
    .copyFiles({
        from: "./assets/img",
        to: "img/[path][name].[ext]"
    })
    // .copyFiles({
    //     from: "./assets/data",
    //     to: "data/[path][name].[ext]"
    // })

    // uncomment if you use TypeScript
    //.enableTypeScriptLoader()

    // uncomment if you use React
    //.enableReactPreset()

    // uncomment to get integrity="..." attributes on your script & link tags
    // requires WebpackEncoreBundle 1.4 or higher
    .enableIntegrityHashes(Encore.isProduction())

    // uncomment if you're having problems with a jQuery plugin
    //.autoProvidejQuery()
;

module.exports = Encore.getWebpackConfig();