https://takao.blog/en/tags/commonjs/Recent content in Commonjs on Commentary of TakaoHugo -- gohugo.ioenCommentary of TakaoSat, 13 Jun 2026 23:11:50 +0900https://takao.blog/en/web/node-esm-require-support-stable/Wed, 05 Nov 2025 00:00:00 +0900https://takao.blog/en/web/node-esm-require-support-stable/<img src="https://takao.blog/img/thumnail.webp" alt="Featured image of post Node.js Stable Support for Requiring ESM Modules" /><h2 id="nodejs-stable-support-for-requiring-esm-modules">Node.js Stable Support for Requiring ESM Modules </h2><p>For years, Node.js developers faced a painful divide: <strong>CommonJS</strong> (CJS) and <strong>ES Modules</strong> (ESM) coexisted with limited interoperability. CJS code could <code>import()</code> ESM modules asynchronously, but <code>require()</code> — the synchronous loading mechanism at the heart of CJS — could not load ESM at all. This forced codebase migrations to be all-or-nothing affairs.</p> <p>That changed with Node.js 22 and 23, which stabilized the <code>--experimental-require-module</code> flag. As of Node 23, synchronous <code>require()</code> can load ES modules, provided the ESM graph does not use top-level await.</p>