# How Wasmer used Codex to build a Node.js runtime for the edge

DevFeed: [How Wasmer used Codex to build a Node.js runtime for the edge](<https://devfeed.tech/articles/how-wasmer-used-codex-to-build-a-node-js-runtime-for-the-edge-6715.md>)

Original publisher: [Read original article](<https://openai.com/index/wasmer>)

Published: 2026-06-03T12:00:00Z

Content type: article

Language: en

Sources: [OpenAI News](<https://devfeed.tech/sources/openai-news.md>)

Topics: [codex](<https://devfeed.tech/topics/codex.md>), [Node.js](<https://devfeed.tech/topics/node-js.md>), [JavaScript](<https://devfeed.tech/topics/javascript.md>), [WebAssembly](<https://devfeed.tech/topics/web-assembly.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [Cloud](<https://devfeed.tech/topics/cloud.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [cloud](<https://devfeed.tech/tags/cloud.md>), [codex](<https://devfeed.tech/tags/codex.md>), [edge-computing](<https://devfeed.tech/tags/edge-computing.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [node-js](<https://devfeed.tech/tags/node-js.md>), [speed](<https://devfeed.tech/tags/speed.md>), [webassembly](<https://devfeed.tech/tags/webassembly.md>)

## AI overview

Wasmer used Codex to build Edge.js, a JavaScript runtime capable of running Node.js workloads in WebAssembly sandboxes for AI and edge computing. The team reports accelerating development by 10x to 20x and completing the runtime in two weeks instead of an estimated year.

## Source excerpt

See how Wasmer used Codex with GPT-5.5 to build a Node.js runtime for the edge, accelerating development 10x to 20x and shipping in weeks instead of months.