rollup.config.mjs

import { babel } from "@rollup/plugin-babel";
import resolve from "@rollup/plugin-node-resolve";
import terser from "@rollup/plugin-terser";
import webWorkerLoader from "@pyrologic/rollup-plugin-web-worker-loader";

export default [
  {
    input: "src/waveform-data.js",
    output: [
      {
        file: "dist/waveform-data.js",
        format: "umd",
        name: "WaveformData",
        sourcemap: true
      },
      {
        file: "dist/waveform-data.min.js",
        format: "umd",
        name: "WaveformData",
        sourcemap: true,
        plugins: [
          terser()
        ]
      }
    ],
    plugins: [
      resolve({ browser: true }),
      webWorkerLoader(),
      babel({ babelHelpers: "bundled" })
    ]
  },
  {
    input: "src/waveform-data.js",
    output: [
      {
        file: "dist/waveform-data.esm.js",
        name: "waveform-data",
        format: "es"
      }
    ],
    plugins: [
      resolve({ browser: true }),
      webWorkerLoader({
        targetPlatform: "browser"
      }),
      babel({ babelHelpers: "bundled" })
    ]
  },
  {
    input: "src/waveform-data.js",
    output: [
      {
        file: "dist/waveform-data.cjs.js",
        name: "waveform-data",
        format: "cjs",
        // Corresonds to "module.exports = WaveformData"
        exports: "default"
      }
    ],
    plugins: [
      resolve({ browser: true }),
      webWorkerLoader(),
      babel({ babelHelpers: "bundled" })
    ]
  }
];