rollup.config.js

/* eslint-disable flowtype/require-valid-file-annotation, no-console, import/extensions */
import nodeResolve from 'rollup-plugin-node-resolve';
import replace from 'rollup-plugin-replace';
import commonjs from 'rollup-plugin-commonjs';
import babel from 'rollup-plugin-babel';
import json from 'rollup-plugin-json';
import uglify from 'rollup-plugin-uglify';
import pkg from './package.json';

const commonPlugins = [
  json(),
  nodeResolve(),
  babel({ plugins: ['external-helpers'] }),
  commonjs({ ignoreGlobal: true }),
];

const getConfig = (input, dist, env) => ({
  input,
  external: ['react-dom', 'react', 'fs', 'path'].concat(Object.keys(pkg.dependencies)),
  plugins: commonPlugins
    .concat(
      env
        ? [
            replace({
              'process.env.NODE_ENV': JSON.stringify(env),
            }),
          ]
        : [],
    )
    .concat(env === 'production' ? [uglify()] : []),
  output: [
    {
      file: dist,
      format: 'cjs',
      exports: 'named',
      globals: { react: 'React' },
    },
  ],
});

export default [
  getConfig('src/index.dev.js', 'dist/react-hot-loader.development.js', 'development'),
  getConfig('src/index.prod.js', 'dist/react-hot-loader.production.min.js', 'production'),

  getConfig('src/babel.dev.js', 'dist/babel.development.js', 'development'),
  getConfig('src/babel.prod.js', 'dist/babel.production.min.js', 'production'),

  getConfig('src/webpack/index.js', 'dist/webpack.development.js', 'development'),
  getConfig('src/webpack/index.js', 'dist/webpack.production.min.js', 'production'),

  {
    input: 'src/webpack/webpackTagCommonJSExports.js',
    plugins: [babel()],
    output: {
      file: 'dist/webpackTagCommonJSExports.js',
      format: 'cjs',
    },
  },
];