webpack.config.cjs

/*!
 * Copyright (c) Microsoft Corporation and contributors. All rights reserved.
 * Licensed under the MIT License.
 */

const fluidRoute = require("@fluid-example/webpack-fluid-loader");
const path = require("path");
const { merge } = require("webpack-merge");

module.exports = (env) => {
	const { production } = env;

	return merge(
		{
			entry: {
				main: "./src/index.ts",
			},
			resolve: {
				extensionAlias: {
					".js": [".ts", ".tsx", ".js", ".cjs", ".mjs"],
				},
				extensions: [".ts", ".tsx", ".js", ".cjs", ".mjs"],
			},
			module: {
				rules: [
					{
						test: /\.tsx?$/,
						loader: "ts-loader",
					},
					{
						test: /\.css$/,
						use: [
							"style-loader", // creates style nodes from JS strings
							"css-loader", // translates CSS into CommonJS
						],
					},
				],
			},
			output: {
				filename: "[name].bundle.js",
				path: path.resolve(__dirname, "dist"),
				library: "[name]",
				// https://github.com/webpack/webpack/issues/5767
				// https://github.com/webpack/webpack/issues/7939
				devtoolNamespace: "fluid-example/multiview-container",
				libraryTarget: "umd",
			},
			// This impacts which files are watched by the dev server (and likely by webpack if watch is true).
			// This should be configurable under devServer.static.watch
			// (see https://github.com/webpack/webpack-dev-server/blob/master/migration-v4.md) but that does not seem to work.
			// The CLI options for disabling watching don't seem to work either, so this may be a symptom of using webpack4 with the newer webpack-cli and webpack-dev-server.
			watchOptions: {
				ignored: "**/node_modules/**",
			},
			mode: production ? "production" : "development",
			devtool: production ? "source-map" : "inline-source-map",
		},
		fluidRoute.devServerConfig(__dirname, env),
	);
};