rollup.config.ts

import commonjs from "rollup-plugin-commonjs";
import json from "rollup-plugin-json";
import resolve from "rollup-plugin-node-resolve";
import sourceMaps from "rollup-plugin-sourcemaps";
import typescript from "rollup-plugin-typescript2";

// eslint-disable-next-line @typescript-eslint/no-var-requires
const pkg = require("./package.json");

const libraryName = "next-rosetta";

export default {
  input: `src/${libraryName}.tsx`,
  output: [
    {
      file: pkg.module,
      format: "esm",
      sourcemap: true,
    },
    { file: pkg.main, format: "cjs", sourcemap: true },
  ],
  // Indicate here external modules you don't wanna include in your bundle (i.e.: 'lodash')
  external: ["react", "react-dom", "next", "next/router", "rosetta"],
  watch: {
    include: "src/**",
  },
  plugins: [
    // Allow json resolution
    json(),
    // Compile TypeScript files
    typescript({ useTsconfigDeclarationDir: true }),
    // Allow bundling cjs modules (unlike webpack, rollup doesn't understand cjs)
    commonjs(),
    // Allow node_modules resolution, so you can use 'external' to control
    // which external modules to include in the bundle
    // https://github.com/rollup/rollup-plugin-node-resolve#usage
    resolve(),
    // Resolve source maps to the original source
    sourceMaps(),
  ],
};