rollup.config.js

/**
 * // TODO
 * Check the structure of the files in the `dist` folder to make sure this rollup config is correct.
 * @source https://dev.to/alexeagleson/how-to-create-and-publish-a-react-component-library-2oe
 */

import resolve from "@rollup/plugin-node-resolve";
import commonjs from "@rollup/plugin-commonjs";
import typescript from "@rollup/plugin-typescript";
import postcss from "rollup-plugin-postcss";
import dts from "rollup-plugin-dts";
import { terser } from "rollup-plugin-terser";
import peerDepsExternal from "rollup-plugin-peer-deps-external";
import replace from "@rollup/plugin-replace";

const packageJson = require("./package.json");

export default [
    {
        input: "src/index.ts",
        output: [
            {
                file: packageJson.main,
                format: "cjs",
                sourcemap: true
            },
            {
                file: packageJson.module,
                format: "esm",
                sourcemap: true
            }
        ],
        plugins: [
            replace({
                "process.env.NODE_ENV": JSON.stringify("development"),
                preventAssignment: true
            }),
            peerDepsExternal(),
            resolve(),
            commonjs(),
            typescript({ tsconfig: "./tsconfig.json" }),
            postcss(),
            terser()
        ]
    },
    {
        input: "dist/esm/index.d.ts",
        output: [{ file: "dist/index.d.ts", format: "esm" }],
        plugins: [dts()],
        external: [/\.css$/]
    }
];