rollup.config.mjs

import commonjs from "@rollup/plugin-commonjs";
import { nodeResolve } from "@rollup/plugin-node-resolve";
import typescript from "@rollup/plugin-typescript";
import fs from "fs";
import minifyHTML from "rollup-plugin-minify-html-literals";
import { terser } from "rollup-plugin-terser";

const pkg = JSON.parse(fs.readFileSync("package.json", { encoding: "utf8" }));
const banner = `/**!
* @license
* sdpi-components v${pkg.version}, Copyright Corsair Memory Inc. and other contributors (${pkg.homepage})
* Lit, Copyright 2019 Google LLC, SPDX-License-Identifier: BSD-3-Clause (https://lit.dev/)
*/`;

export default (commandLineArgs) => {
	// Determine the environment, and remove the command line to prevent warnings.
	// eslint-disable-next-line no-undef
	const dev = !!(process.env.ROLLUP_WATCH || commandLineArgs.dev);
	delete commandLineArgs.dev;

	/**
	 * @type {import('rollup').RollupOptions}
	 */
	const config = {
		input: "src/index.ts",
		output: {
			file: dev ? `example/pi/sdpi-components.js` : `dist/sdpi-components.js`,
			format: "iife",
			sourcemap: dev,
			banner,
		},
		plugins: [
			!dev && minifyHTML.default(),
			typescript({
				sourceMap: dev,
				inlineSources: dev,
			}),
			nodeResolve(),
			commonjs(),
			!dev &&
				terser({
					format: {
						comments: /^\*!/,
					},
				}),
		],
	};

	return config;
};