buildPackage.js

/* eslint-disable no-console */
import rollup from 'rollup'
import babel from 'rollup-plugin-babel'
import uglify from 'rollup-plugin-uglify'
import commonjs from 'rollup-plugin-commonjs'
import nodeResolver from 'rollup-plugin-node-resolve'

const packages = {
  'inline-style-prefixer': {
    name: 'InlineStylePrefixer',
    entry: 'dynamic/index.js'
  },
  'inline-style-prefix-all': {
    name: 'InlineStylePrefixAll',
    entry: 'static/index.js'
  }
}

// Small helper to error and exit on fail
const errorOnFail = (err) => {
  if (err) {
    console.error(err)
    process.exit(1)
  }
}

const babelPlugin = babel({
  babelrc: false,
  presets: ['es2015-rollup', 'react', 'stage-0']
})

const nodeResolverPlugin = nodeResolver({
  jsnext: true,
  main: true
})
const commonJSPlugin = commonjs({ include: 'node_modules/**' })
const uglifyPlugin = uglify()

const plugins = [babelPlugin, nodeResolverPlugin, commonJSPlugin]

function rollupConfig(pkg, info, minify) {
  return {
    entry: `modules/${info.entry}`,
    plugins: minify ? plugins.concat(uglifyPlugin) : plugins
  }
}

function bundleConfig(pkg, info, minify) {
  return {
    format: 'umd',
    moduleName: info.name,
    dest: `dist/${pkg}${minify ? '.min' : ''}.js`,
    sourceMap: !minify
  }
}

function buildPackage(pkg) {
  rollup
    .rollup(rollupConfig(pkg, packages[pkg], process.env.NODE_ENV === 'production'))
    .then((bundle) => {
      bundle.write(bundleConfig(pkg, packages[pkg], process.env.NODE_ENV === 'production'))
      console.log(
        `Successfully bundled ${packages[pkg].name}${process.env.NODE_ENV === 'production'
          ? ' (minified).'
          : '.'}`
      )
    })
    .catch(errorOnFail)
}

Object.keys(packages).forEach(pkg => buildPackage(pkg))