peter-jerry-ye / worker

An experimental MoonBit binding for Cloudflare Worker

Moonbit's Cloudflare Worker Demo

This project showcases how to use MoonBit to develop a cloudflare worker.

Project architecture

This project contains four packages:

• js: Core JavaScript binding. Binds things that is defined in the ECMAScript.
• web: API that are part of the WinterCG. In other words, standard APIs.
• cloudflare: Cloudflare APIs.
• lib: Actual server definition. Inspired by http4s though naively defined.

The bindings are expected to be generated from an IDL in the future.

FFI design

The FFIs are divided to three layers:

• *_ffi: All parameters and results are JS_Value, which stands for any value in JavaScript.
• *_js: All parameters and results are specific JS types, except for Promise[T] (Warning: Do not try to create Promise[Promise[T]]).
• *: Array and String are converted to MoonBit type for ergonomics.

Run the project

All you need is moon node and pnpm.

You can simply run pnpm install and then pnpm dev. The wrangler will spin up a server, and you can access it with the commands provided.

You may use curl or other means to visit all the APIs. The expected behavior is specified in the test/index.spec.ts. Simply run pnpm test and check that it still works.