JS async exports

test.js

let Delay = (ms) => new Promise(res => setTimeout(res, ms));
exportsAsync = new Proxy(()=>{}, {
	get(t, k) {
		const resource = k;

		return new Proxy({}, {
			get(t, k) {
				return (...args) => {
					return new Promise((resolve, reject) => {
						let cb = (err, data) => { if (err) reject(err); else resolve(data); };
						exports[resource][k].apply(void 0, [cb, ...args]);
					});
				};
			},

			set() {
				throw new Error('cannot set values on an export resource');
			}
		});
	},

	apply(t, self, args) {
		if (args.length !== 2) {
			throw new Error('this needs 2 arguments');
		}

		const [ exportName, func ] = args;

		exports(exportName, (cb, ...args) => {
			if (typeof cb !== 'function')
				throw Error("async export called without callback first");
			let promise = func.apply(void 0, args);
			if (!(promise instanceof Promise))
				promise = Promise.resolve(promise);
			promise.then(r => cb(null, r)).catch(err => cb(err, null));
		});
	},

	set() {
		throw new Error('cannot set values on exports');
	}
});



exportsAsync("add", async (x,y) => {
	await Delay(500);
	return x+y;
});

setImmediate(async () => {
    console.log(await exportsAsync[GetCurrentResourceName()].add(1,2));		
});