message: feat(rollup): create entry point without css
diff: +import path from 'path';
  import resolve from '@rollup/plugin-node-resolve';
  import commonjs from '@rollup/plugin-commonjs';
  import babel from '@rollup/plugin-babel';
  @@ -12,7 +13,7 @@ import pkg from './package.json';
  const isProd = process.env.NODE_ENV === 'production';
  const processEnv = isProd ? 'production' : 'development';
  -export default {
  +const baseConfig = ({ mainFile = pkg.main, moduleFile = pkg.module, extractCss = false } = {}) => ({
  input: 'src/index.ts',
  external: ['react', 'react-dom', /@babel\/runtime/],
  onwarn(warning, rollupWarn) {
  @@ -22,13 +23,13 @@ export default {
  },
  output: [
  {
  - file: pkg.main,
  + file: mainFile,
  format: 'cjs',
  sourcemap: true,
  exports: 'named',
  },
  {
  - file: pkg.module,
  + file: moduleFile,
  format: 'esm',
  sourcemap: true,
  exports: 'named',
  @@ -38,10 +39,13 @@ export default {
  replace({
  __ENV__: JSON.stringify(processEnv),
  __REACT_FLOW_VERSION__: JSON.stringify(pkg.version),
  + // this comes from the easy-peasy dependency 'memoizerific'
  + 'process.env.FORCE_SIMILAR_INSTEAD_OF_MAP': JSON.stringify('true'),
  }),
  bundleSize(),
  postcss({
  minimize: isProd,
  + extract: extractCss,
  }),
  babel({
  exclude: 'node_modules/**',
  @@ -56,4 +60,15 @@ export default {
  include: 'node_modules/**',
  }),
  ],
  -};
  +});
  +
  +export default isProd
  + ? [
  + baseConfig(),
  + baseConfig({
  + mainFile: 'dist/nocss/ReactFlow-nocss.js',
  + moduleFile: 'dist/nocss/ReactFlow-nocss.esm.js',
  + extractCss: path.resolve('dist/nocss/style.css'),
  + }),
  + ]
  + : baseConfig();
  