rollup.config.js

import nodeResolve from '@rollup/plugin-node-resolve'
import babel from '@rollup/plugin-babel'
import replace from '@rollup/plugin-replace'
import commonjs from '@rollup/plugin-commonjs'
import { terser } from 'rollup-plugin-terser'

const env = process.env.NODE_ENV

const extensions = ['.js', '.ts', '.tsx', '.json']

const config = {
  input: 'src/index.ts',
  output: {
    format: 'umd',
    name: 'useGlobalState',
    globals: {
      react: 'React',
    },
  },
  plugins: [
    nodeResolve({
      extensions,
    }),
    babel({
      include: 'src/**/*',
      exclude: '**/node_modules/**',
      babelHelpers: 'runtime',
      extensions,
    }),
    replace({
      'process.env.NODE_ENV': JSON.stringify(env),
      preventAssignment: true,
    }),
    commonjs(),
  ],
}

if (env === 'production') {
  config.plugins.push(
      terser({
        compress: {
          pure_getters: true,
          unsafe: true,
          unsafe_comps: true,
          warnings: false,
        },
      })
  )
}

export default config