rollup.config.js

import {terser} from 'rollup-plugin-terser';
import resolve from 'rollup-plugin-node-resolve';
import commonjs from 'rollup-plugin-commonjs';
import postcss from 'rollup-plugin-postcss';
import cleanCss from 'postcss-clean';
import postcssDiscardComments from 'postcss-discard-comments';

process.chdir(__dirname);

const build = {
  input: './build.js',
  output: {
    file: './src/_resources/fusion.min.js',
    format: 'iife'
  },
  plugins: [
    resolve({browser: true, preferBuiltins: false}),
    commonjs(),
    terser({format: {comments: false}}),
    postcss(
      {
        extract: true,
        minimize: true,
        plugins: [
          postcssDiscardComments({removeAll: true}),
          cleanCss({level: {1: {roundingPrecision: 3}}})
        ]
      }
    )
  ]
};

const demo = {
  input: './demo/src/main.js',
  output: {
    file: './demo/src/_resources/demo.min.js',
    format: 'iife'
  },
  plugins: [
    resolve({browser: true, preferBuiltins: false}),
    commonjs(),
    terser({format: {comments: false}}),
    postcss(
      {
        extract: true,
        minimize: true,
        plugins: [
          postcssDiscardComments({removeAll: true}),
          cleanCss({level: {1: {roundingPrecision: 3}}})
        ]
      }
    )
  ]
};

export default [build, demo];