aretherecookies-mobile/js/helpers/debounce.js

// @flow
export default <T>(fn: Function, delay?: number = 100): (() => Promise<T>) => {
	let cacheTimeout;
	let cachedResult;
	return (...args) => {
		if (cacheTimeout) {
			clearTimeout(cacheTimeout);
		}

		if (!cachedResult) {
			cachedResult = new Promise((resolve, reject) => {
				try {
					resolve(fn(...args));
				} catch (err) {
					reject(err);
				}
			});
		}

		cacheTimeout = setTimeout(() => (cachedResult = null), delay);

		return cachedResult;
	};
};