rollup.config.js

import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';

import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';

import terser from '@rollup/plugin-terser';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const pkg = JSON.parse(fs.readFileSync(path.resolve(__dirname, 'package.json'), 'utf8'));

const short_banner = `/*! ${pkg.name} v${pkg.version} | * (c) ${new Date().getFullYear()} ${pkg.author} and contributors | ${pkg.license} License*/`;

const banner = `/*!
* ${pkg.name} v${pkg.version}
* (c) ${new Date().getFullYear()} ${pkg.author} and other contributors
*
* Released under the ${pkg.license} License
* Date: ${new Date().toISOString().split('T')[0]}
*/`;

function removeComment() {
  return {
    name: 'remove-sourcemap-comment',
    writeBundle(outputOptions, bundle) {
      for (const fileName in bundle) {
        if (fileName.endsWith('.js')) {
          const filePath = path.join(
            outputOptions.dir || path.dirname(outputOptions.file),
            fileName
          );

          let code = fs.readFileSync(filePath, 'utf-8');
          code = code
            .replace(/^\s*\/\/\s*@ts-check\s*$/gm, '')
            .replace(/\/\/# sourceMappingURL=.*$/gm, '');
          fs.writeFileSync(filePath, code);
        }
      }
    },
  };
}

export default [
  {
    input: 'src/index.js',
    output: [
      {
        file: 'dist/exprify.esm.js',
        format: 'es',
        sourcemap: true,
      },
      {
        file: 'dist/exprify.cjs.cjs',
        format: 'cjs',
        sourcemap: true,
        exports: 'default',
      },
      {
        file: 'dist/exprify.js',
        format: 'umd',
        name: 'Exprify',
        banner: banner,
        sourcemap: true,
        indent: true,
        exports: 'default',
      },
    ],
    plugins: [resolve(), commonjs(), removeComment()],
  },
  {
    input: 'src/index.js',
    output: {
      file: 'dist/exprify.min.js',
      format: 'umd',
      name: 'Exprify',
      sourcemap: true,
      banner: short_banner,
    },
    plugins: [resolve(), commonjs(), terser(), removeComment()],
  },
];