hd-utils/lib/utils/functions/debouncePromise.js

A handy utils for modern JS developers

export default function debouncePromise(callback, wait) {
    let state = undefined;
    return (...args) => {
        if (!state) {
            state = {};
            state.promise = new Promise((resolve, reject) => {
                state.resolve = resolve;
                state.reject = reject;
            });
        }
        clearTimeout(state.timeout);
        state.latestArgs = args;
        state.timeout = setTimeout(() => {
            const s = state;
            state = undefined;
            try {
                s.resolve(callback(...s.latestArgs));
            }
            catch (e) {
                s.reject(e);
            }
        }, wait);
        return state.promise;
    };
}