25 lines
853 B
JavaScript
25 lines
853 B
JavaScript
|
/**
|
||
|
|
* Microtask debouncer
|
||
|
|
* https://developer.mozilla.org/en-US/docs/Web/API/HTML_DOM_API/Microtask_guide
|
||
|
|
* @param fn - Function to debounce
|
||
|
|
* @returns debounced function
|
||
|
|
*/ export function debounce(fn) {
|
||
|
|
let pending;
|
||
|
|
// React testing platforms will often output errors when state updates happen outside `act`
|
||
|
|
// Since there is nothing obvious to wait for we just avoid debouncing in unit test environments
|
||
|
|
if (process.env.NODE_ENV === 'test') {
|
||
|
|
return fn;
|
||
|
|
}
|
||
|
|
return ()=>{
|
||
|
|
if (!pending) {
|
||
|
|
pending = true;
|
||
|
|
queueMicrotask(()=>{
|
||
|
|
// Need to set pending to `false` before the debounced function is run.
|
||
|
|
// React can actually interrupt the function while it's running!
|
||
|
|
pending = false;
|
||
|
|
fn();
|
||
|
|
});
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|