lbry-desktop/ui/util/debounce.js
2019-11-11 13:27:29 -05:00

22 lines
683 B
JavaScript

// Returns a function, that, as long as it continues to be invoked, will not
// be triggered. The function will be called after it stops being called for
// N milliseconds. If `immediate` is passed, trigger the function on the
// leading edge, instead of the trailing.
export default function debouce(func, wait, immediate) {
let timeout;
return function() {
const context = this;
const args = arguments;
const later = () => {
timeout = null;
if (!immediate) func.apply(context, args);
};
const callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) func.apply(context, args);
};
}