What is it?
Cloudflare Workers run on Cloudflare’s JavaScript Runtime, workerd, which is different from Node.js. This means that the types for Node.js are not compatible with workerd. @cloudflare/workers-types provides type definitions for the Cloudflare Workers Runtime.
What else is it?
I also maintain a website where these type definitions can be viewed online and referenced easily.
Why?
Cloudflare Workers are a great way to host serverless applications. They run on their own runtime, so not everything is the same as in Node.js.
The Solution
@cloudflare/workers-types provides type definitions for the Cloudflare Workers Runtime. This makes it easier to write TypeScript code that works on Cloudflare Workers.