composi/rollup.config.js

import babel from 'rollup-plugin-babel';
import commonjs from 'rollup-plugin-commonjs'
import resolve from 'rollup-plugin-node-resolve'
import uglify from 'rollup-plugin-uglify'

export default {
  input: 'index-datastore.js',
  output: {
    file: 'dist/composi.js',
    format: 'umd',
    name: 'composi',
    sourcemap: true,
    sourcemapFile: 'dist/composi.js.map'
  },
  plugins:
    [
      babel({
        exclude: 'node_modules/**'
      }),
      resolve({
        jsnext: true,
        main: true,
        browser: true
      }),
      commonjs(),
      uglify({
        compress: {
          collapse_vars: true
        }
      })
    ]
}