rollup-plugin-cjs-shim

Rollup plugin to shim CJS modules.

• Replaces fileURLToPath(import.meta.url) to __filename
• Replaces import.meta.filename to __filename
• Replaces import.meta.dirname to __dirname
• Replaces import.meta.resolve to require.resolve
• Replaces import.meta.env to process.env
• Replaces typeof import.meta to "undefined"
• Removes require = createRequire(import.meta.url)
• Removes global = globalThis

Usage

import cjsShim from "rollup-plugin-cjs-shim";

export default {
  input: "index.js",
  output: {
    file: "index.cjs",
    format: "cjs",
  },
  plugins: [cjsShim()],
};

Example

Input

import { createRequire } from "module";
export const filename = import.meta.filename;
export const dirname = import.meta.dirname;

const require = createRequire(import.meta.url);
require("path");

Output

"use strict";
require("module");

const filename = __filename;
const dirname = __dirname;

exports.dirname = dirname;
exports.filename = filename;

require("path");