rollup.config.js

import replacePlugin from '@rollup/plugin-replace';
import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import nodePolyfills from 'rollup-plugin-polyfill-node';
import filesize from 'rollup-plugin-filesize';
import fs from 'node:fs';
import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';

const pkgPath = join(dirname(fileURLToPath(import.meta.url)), 'package.json');

const pkg = JSON.parse(fs.readFileSync(pkgPath, 'utf-8'));

const deps = Object.keys(pkg.dependencies);

const external = (id) => deps.some((dep) => id.startsWith(dep));

const replace = replacePlugin({
  preventAssignment: true,
  __VERSION__: pkg.version,
});

/** @type {import('rollup').MergedRollupOptions[]} */
export default [
  {
    input: {
      'utils/index': './src/utils/index.js',
      account: './src/account.js',
      api: './src/api.js',
      attributes: './src/attributes.js',
      cache: './src/cache.js',
      card: './src/card.js',
      cart: './src/cart.js',
      categories: './src/categories.js',
      content: './src/content.js',
      cookie: './src/cookie.js',
      currency: './src/currency.js',
      locale: './src/locale.js',
      payment: './src/payment/index.js',
      products: './src/products.js',
      settings: './src/settings.js',
      subscriptions: './src/subscriptions.js',
      index: './src/index.js',
    },
    external,
    output: [
      {
        dir: './dist',
        chunkFileNames: '[name].[hash].mjs',
        entryFileNames: '[name].mjs',
        generatedCode: {
          preset: 'es2015',
          constBindings: true,
          objectShorthand: true,
        },
        format: 'es',
      },
    ],
    plugins: [replace, resolve(), commonjs(), filesize()],
  },
  {
    input: './src/index.js',
    output: [
      {
        name: 'swell',
        sourcemap: true,
        exports: 'default',
        file: pkg.main,
        generatedCode: {
          preset: 'es2015',
          constBindings: true,
          objectShorthand: true,
        },
        format: 'cjs',
      },
    ],
    external,
    plugins: [replace, resolve(), commonjs(), filesize()],
  },
  {
    input: './src/index.js',
    output: [
      {
        name: 'swell',
        sourcemap: true,
        exports: 'default',
        file: pkg.browser,
        format: 'umd',
      },
    ],
    plugins: [
      replace,
      nodePolyfills({ exclude: ['node_modules/object-inspect/**'] }),
      resolve(),
      commonjs(),
      filesize(),
    ],
  },
];