doesitarm/functions/hello-world.js

export async function onRequest(context) {
    // Contents of context object
    const {
        request, // same as existing Worker API
        env, // same as existing Worker API
        params, // if filename includes [id] or [[path]]
        waitUntil, // same as ctx.waitUntil in existing Worker API
        next, // used for middleware or to fetch assets
        data, // arbitrary space for passing data between middlewares
    } = context;

    return new Response(
        JSON.stringify({
            message: 'Hello, worker!',
            context,
        })
    )
}