rollup.config.js

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

const LIB_DIR = 'lib';
const INPUT = LIB_DIR + '/index.js';
const PLUGINS = [nodeResolve({ preferBuiltins: false, browser: true }), commonjs()];
const MINIFIER = terser({ keep_classnames: true, keep_fnames: true });
const OUTPUT_PREFIX = LIB_DIR + '/browser/millenniumdb-driver';

const COMMON_CONFIG = {
    input: INPUT,
    plugins: PLUGINS,
};

const IIFE_CONFIG = {
    ...COMMON_CONFIG,
    output: {
        file: `${OUTPUT_PREFIX}.js`,
        format: 'iife',
        sourcemap: false,
        name: 'MillenniumDB',
    },
};

const ESM_CONFIG = {
    ...COMMON_CONFIG,
    output: {
        file: `${OUTPUT_PREFIX}.esm.js`,
        format: 'es',
        sourcemap: false,
        name: 'MillenniumDB',
    },
};

const IIFE_MIN_CONFIG = {
    ...IIFE_CONFIG,
    output: {
        ...IIFE_CONFIG.output,
        file: `${OUTPUT_PREFIX}.min.js`,
    },
    plugins: [...IIFE_CONFIG.plugins, MINIFIER],
};

const ESM_MIN_CONFIG = {
    ...ESM_CONFIG,
    output: {
        ...ESM_CONFIG.output,
        file: `${OUTPUT_PREFIX}.esm.min.js`,
    },
    plugins: [...ESM_CONFIG.plugins, MINIFIER],
};

export default [IIFE_CONFIG, ESM_CONFIG, IIFE_MIN_CONFIG, ESM_MIN_CONFIG];