rollup.config.js

import { terser } from 'rollup-plugin-terser';

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

import babel from 'rollup-plugin-babel';
import packageJson from './package.json';

/**
 * @external RollupConfig
 * @type {PlainObject}
 * @see {@link https://rollupjs.org/guide/en#big-list-of-options}
 */

/**
 * @param {PlainObject} [config= {}]
 * @param {boolean} [config.minifying=false]
 * @param {string} [config.format='umd']
 * @param {boolean} [config.lite=false]
 * @returns {external:RollupConfig}
 */
function getRollupObject ({ minifying = false, format = 'umd', lite = false } = {}) {
    const nonMinified = {
        input: 'esquery.js',
        output: {
            format,
            sourcemap: minifying,
            file: [
                'dist/esquery',
                lite ? '.lite' : '',
                format === 'umd' ? '' : `.${format}`,
                minifying ? '.min' : '',
                '.js'
            ].join(''),
            name: 'esquery',
            globals: {
                estraverse: 'estraverse'
            }
        },
        plugins: [
            json(),
            nodeResolve(),
            commonjs(),
            babel()
        ]
    };
    if (lite) {
        nonMinified.external = Object.keys(packageJson.dependencies);
    }
    if (minifying) {
        nonMinified.plugins.push(terser());
    }
    return nonMinified;
}

export default [
    getRollupObject({ minifying: true, format: 'umd' }),
    getRollupObject({ minifying: false, format: 'umd' }),
    getRollupObject({ minifying: true, format: 'esm' }),
    getRollupObject({ minifying: false, format: 'esm' }),
    getRollupObject({ minifying: true, format: 'umd', lite: true }),
    getRollupObject({ minifying: false, format: 'umd', lite: true })
];