rollup.config.mjs

import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import terser from '@rollup/plugin-terser';
import babel from '@rollup/plugin-babel';
import replace from '@rollup/plugin-replace';

export default [
  // browser-friendly UMD build
  {
    input: 'lib/index.js',
    output: {
      name: 'babel-plugin-inferno',
      file: 'dist/index.umd.js',
      format: 'umd',
      globals: {
        '@babel/plugin-syntax-jsx': 'Babel.availablePlugins[\'syntax-jsx\']',
        '@babel/core': 'Babel'
      }
    },
    plugins: [
      resolve(),
      commonjs(),
      replace({
        preventAssignment: true,
        'process.env.NODE_ENV': JSON.stringify('production'),
        'process.env.BABEL_TYPES_8_BREAKING': false,
        'require(\'@babel/plugin-syntax-jsx\').default': 'Babel.availablePlugins[\'syntax-jsx\']'
      }),
      babel({
        'presets': [['@babel/preset-env']]
      }),
      terser({
        compress: {
          ecma: 5,
          inline: true,
          if_return: false,
          reduce_funcs: false,
          passes: 5,
          comparisons: false
        },
        ie8: false,
        mangle: {
          toplevel: true
        },
        parse: {
          html5_comments: false,
          shebang: false
        },
        toplevel: false,
        warnings: false
      })
    ]
  }
];