@kweli/cs-rest/rollup.config.js

import pkg from './package.json'
import resolve from '@rollup/plugin-node-resolve'
import commonjs from '@rollup/plugin-commonjs'
import babel from '@rollup/plugin-babel'
import json from '@rollup/plugin-json'
import {
  terser
} from 'rollup-plugin-terser'
import replace from '@rollup/plugin-replace'

// https://nolanlawson.com/2017/01/09/how-to-write-a-javascript-package-for-both-node-and-the-browser/
function replaceStrings (isBrowser = true) {
  const isNode = !isBrowser

  return {
    preventAssignment: true,
    'process.browser': isBrowser.toString(),
    'process.node': isNode.toString()
  }
}

export default [{
  input: 'src/index.js',
  output: [{
    file: pkg.main,
    format: 'cjs',
    sourcemap: true,
    exports: 'named'
  }],
  external: [
    ...Object.keys(pkg.dependencies || {})
  ],
  plugins: [
    replace(replaceStrings(false)),
    resolve({
      preferBuiltins: true
    }),
    commonjs(),
    json()
  ]
}, {
  input: 'src/index.js',
  output: [{
    file: pkg.module,
    format: 'es',
    sourcemap: true
  }],
  external: [
    ...Object.keys(pkg.dependencies || {})
  ],
  plugins: [
    replace(replaceStrings(true)),
    resolve(),
    commonjs(),
    json() // babel()
  ]
}, {
  input: 'src/index.js',
  output: [{
    file: 'lib/index.umd.js',
    format: 'umd',
    name: 'CSREST',
    exports: 'named',
    sourcemap: true,
    globals: {
      axios: 'axios'
    }
  }],
  external: ['axios'],
  plugins: [
    replace(replaceStrings(true)),
    resolve({
      browser: true
    }),
    commonjs(),
    json(),
    babel({
      babelHelpers: 'bundled'
    })
    // terser()
  ]
}, {
  input: 'src/index.js',
  output: [{
    file: pkg.unpkg,
    format: 'umd',
    name: 'CSREST',
    exports: 'named',
    sourcemap: true,
    globals: {
      axios: 'axios'
    }
  }],
  external: ['axios'],
  plugins: [
    replace(replaceStrings(true)),
    resolve({
      browser: true
    }),
    commonjs(),
    json(),
    babel({
      babelHelpers: 'bundled'
    }),
    terser()
  ]
}]