rollup.config.js

import pkg from './package.json';
import commonjs from '@rollup/plugin-commonjs';
import resolve from '@rollup/plugin-node-resolve';
import typescript from 'rollup-plugin-typescript2';
import visualizer from 'rollup-plugin-visualizer';
import { terser } from 'rollup-plugin-terser';
import dts from 'rollup-plugin-dts';

const bundle = (format, filename, options = {}) => ({
  input: 'src/index.ts',
  output: {
    file: filename,
    format: format,
    name: 'PixiGraph',
    sourcemap: true,
  },
  external: [...Object.keys(pkg.peerDependencies), ...(!options.resolve ? Object.keys(pkg.dependencies) : [])],
  plugins: [
    ...(options.resolve ? [resolve({ preferBuiltins: false })] : []),
    commonjs(),
    typescript({
      typescript: require('typescript'),
      clean: options.stats,
    }),
    ...(options.minimize ? [terser()] : []),
    ...(options.stats
      ? [
          visualizer({
            filename: filename + '.stats.html',
          }),
        ]
      : []),
  ],
});

export default [
  bundle('cjs', pkg.main),
  bundle('es', pkg.module),
  bundle('umd', 'dist/pixi-graph.umd.min.js'.replace('.min', ''), { resolve: true, stats: true }),
  bundle('umd', 'dist/pixi-graph.umd.min.js', { resolve: true, minimize: true }),
  {
    input: 'src/index.ts',
    output: {
      file: pkg.types,
      format: 'es',
    },
    plugins: [dts()],
  },
];