openworkers-transform

SWC-based TypeScript/JavaScript transform for OpenWorkers.

• Strips TypeScript types
• Transforms export default { ... } → globalThis.default = { ... } (required for V8 classic script evaluation)
• Collects named exports in globalThis.__exports, where the runtime finds a Durable Object class

Usage

use openworkers_transform::{parse_worker_code, CodeLanguage};

let code = b"export default { fetch() { return new Response('hello'); } }";
let result = parse_worker_code(code, CodeLanguage::JavaScript).unwrap();
// => "globalThis.default = { fetch () { return new Response('hello'); } };"

Supported patterns

Pattern	Result
export default { ... }	globalThis.default = { ... }
export default function f() {}	globalThis.default = function f() {}
export default class C {}	globalThis.default = class C {}
export { x as default }	globalThis.default = x
Re-exports (from '...')	Kept as-is
Named exports (export class X, export { a as b })	Declarations kept, and globalThis.__exports = { "X": X, "b": a } at the end