unpkg/rollup.config.cjs

const builtinModules = require('module').builtinModules;
const execSync = require('child_process').execSync;

const babel = require('rollup-plugin-babel');
const commonjs = require('rollup-plugin-commonjs');
//const compiler = require('@ampproject/rollup-plugin-closure-compiler');
const json = require('rollup-plugin-json');
const replace = require('rollup-plugin-replace');
const resolve = require('rollup-plugin-node-resolve');
const url = require('rollup-plugin-url');

const entryManifest = require('./plugins/entryManifest');
const pkg = require('./package.json');
const progress = require('rollup-plugin-progress');

const buildId =
 process.env.BUILD_ID ||
 execSync('git rev-parse --short HEAD').toString().trim();

const manifest = entryManifest();

const client = ['browse', 'main'].map(entryName => {
 return {
 external: ['@emotion/core', 'react', 'react-dom'],
 input: `modules/client/${entryName}.js`,
 output: {
 format: 'iife',
 dir: 'public/_client',
 entryFileNames: '[name]-[hash].js',
 globals: {
 react: 'React',
 'react-dom': 'ReactDOM',
 '@emotion/core': 'emotionCore'
 }
 },
 moduleContext: {
 'node_modules/react-icons/lib/esm/iconBase.js': 'window'
 },
 plugins: [
 manifest.record({ publicPath: '/_client/' }),
 babel({ exclude: /node_modules/ }),
 json(),
 resolve(),
 progress(),
 commonjs({
 namedExports: {
 'node_modules/react/index.js': [
 'createContext',
 'createElement',
 'forwardRef',
 'Component',
 'Fragment'
 ]
 }
 }),
 replace({
 'process.env.BUILD_ID': JSON.stringify(buildId),
 'process.env.NODE_ENV': JSON.stringify(
 process.env.NODE_ENV || 'development'
 )
 }),
 url({
 limit: 5 * 1024,
 publicPath: '/_client/'
 }),
 //compiler()
 ]
 };
});

const dependencies = (process.env.NODE_ENV === 'development'
 ? Object.keys(pkg.dependencies).concat(Object.keys(pkg.devDependencies || {}))
 : Object.keys(pkg.dependencies)
).concat('react-dom/server');

const server = {
 external: builtinModules.concat(dependencies),
 input: 'modules/server.js',
 output: { file: 'server.js', format: 'cjs' },
 moduleContext: {
 'node_modules/react-icons/lib/esm/iconBase.js': 'global'
 },
 plugins: [
 manifest.inject({ virtualId: 'entry-manifest' }),
 babel({ exclude: /node_modules/ }),
 json(),
 resolve(),
 commonjs(),
 url({
 limit: 5 * 1024,
 publicPath: '/_client/',
 emitFiles: false
 }),
 replace({
 'process.env.BUILD_ID': JSON.stringify(buildId)
 })
 ]
};

module.exports = client.concat(server);