rollup.config.js

import json from "rollup-plugin-json";
import { terser } from "rollup-plugin-terser";
import autoExternal from 'rollup-plugin-auto-external';
import resolve from 'rollup-plugin-node-resolve';

export default [
  {
    external: ['three', 'ecsy'],
    input: "src/index.js",
    plugins: [
      json({ exclude: ["node_modules/**"] }),
      // resolve()
    ],
    output: [
      {
        format: "umd",
        name: "ECSYTHREE",
        noConflict: true,
        file: "build/ecsy-three.js",
        indent: "\t"
      },
      {
        format: "es",
        file: "build/ecsy-three.module.js",
        indent: "\t"
      }
    ]
  },
  {
    input: "src/index.js",
    plugins: [
      json({ exclude: ["node_modules/**"] }),
      terser()
    ],
    output: [
      {
        format: "umd",
        name: "ECSYTHREE",
        noConflict: true,
        file: "build/ecsy-three.min.js",
        indent: "\t"
      }
    ]
  }
];