rollup.config.js

import babel from '@rollup/plugin-babel';
import terser from '@rollup/plugin-terser';
import pkg from './package.json' assert { type: 'json' };

const isDev = String(process.env.mode).includes('dev');
if (isDev) {
    console.log('Building dev version...');
} else {
    console.log('Building production...');
}

const mainFile = './src/index.js';

export default [
    {
        input: mainFile,
        output: [
            {
                name: 'parseSB3Blocks',
                file: pkg.browser,
                format: 'umd',
            },
            {
                file: pkg.module,
                format: 'esm',
                sourcemap: !isDev,
            },
            {
                file: pkg.main,
                format: 'cjs',
                sourcemap: !isDev,
            },
        ],
        plugins: [
            babel({
                babelHelpers: 'bundled',
            }),
            !isDev && terser(),
        ],
    },
];