Quick to promise method

to_promise.js

	to_direct_promise(functor, ...args) {
		return this.to_promise(functor, ...args, undefined);
	}

	to_promise(functor, ...args) {
		const options = args.pop();
		let resolve;
		let reject;
		const result = new Promise((res, cat) => {
			resolve = res;
			reject = cat;
		});

		functor.call(this, ...args, (error, data) => {
			if (error) {
				return reject(error);
			}

			return resolve(data);
		}, options);

		return result;
	}