https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/takeRecords
PerformanceObserver: takeRecords() method - Web APIs | MDN
The takeRecords() method of the PerformanceObserver interface returns the current list of PerformanceEntry objects stored in the performance observer, emptying...
web apisperformanceobservertakerecordsmethodmdn