rollup.config.js

import babel from '@rollup/plugin-babel';
import {terser} from 'rollup-plugin-terser';
import nodeResolve from '@rollup/plugin-node-resolve';
import copy from 'rollup-plugin-copy';
import {argv} from 'yargs';

const compress = argv.compact;

const babelOptions = {
  exclude: 'node_modules/**',
  presets: [['@babel/preset-env', {modules: false}]],
  babelrc: false,
};

const output = [
  {
    file: `dist/umd/i18nextShopify${compress ? '.min' : ''}.js`,
    format: 'umd',
    name: 'i18nextShopify',
  },
  {
    file: `dist/amd/i18nextShopify${compress ? '.min' : ''}.js`,
    format: 'amd',
    name: 'i18nextShopify',
  },
  {
    file: `dist/iife/i18nextShopify${compress ? '.min' : ''}.js`,
    format: 'iife',
    name: 'i18nextShopify',
  },
];

const config = {
  input: 'src/index.js',
  plugins: [
    babel(babelOptions),
    nodeResolve({mainField: ['jsnext:main']}),
    copy({targets: [{src: './index.d.ts', dest: 'dist/types'}]}),
  ].concat(compress ? terser() : []),
  output,
  external: ['react'],
};

export default config;