Rollup

rollup.config.js

import autoExternal from "rollup-plugin-auto-external"
import babel from "rollup-plugin-babel"
import commonjs from "rollup-plugin-commonjs"
import nodeBuiltins from "rollup-plugin-node-builtins"
import nodeGlobals from "rollup-plugin-node-globals"
import nodeResolve from "rollup-plugin-node-resolve"

import pkg from "./package.json"

const SRC_EXTENSIONS = [".js", ".jsx", ".ts", ".tsx"]

module.exports = {
  input: pkg.source,
  plugins: [
    // Exclude dependencies listed in package.json
    autoExternal(),
    // __dirname, __filename, etc
    nodeGlobals(),
    // path, fs, process, etc
    nodeBuiltins(),
    // Resolve some extra file extensions
    nodeResolve({ extensions: SRC_EXTENSIONS }),
    // Rollup only understands esm by default
    commonjs(),
    // Compile files with Babel
    babel({
      extensions: SRC_EXTENSIONS,
      include: ["src/**/*"],
    }),
  ],
  output: [
    {
      file: pkg.main,
      format: "cjs",
      sourcemap: true,
    },
    {
      file: pkg.module,
      format: "esm",
      sourcemap: true,
    },
    {
      file: pkg.browser,
      format: "iife",
      sourcemap: true,
      name: "ExampleApp",
      // External modules here
      globals: {},
    },
  ],
}