add a fluent interface on object with promise methods

enchainProxifier.js

const enchainProxifier = (target, promise = Promise.resolve()) => {
	return new Proxy(target, {
		get(target, propName) {
			if (propName === 'promise') {
				return promise;
			} else if (propName === 'then') {
				return (...args) => promise.then(...args);
			}
			if (target[propName] instanceof Function) {
				return (...args) => enchainProxifier(target, promise.then(() => target[propName](...args)));
			}
			return target[propName];
		}
	});
};

module.exports = enchainProxifier;

Could you show some example?