chrome-devtools-frontend
Version:
Chrome DevTools UI
23 lines (22 loc) • 1.11 kB
TypeScript
interface PerformanceEntryMap {
'event': PerformanceEventTiming[];
'first-input': PerformanceEventTiming[];
'interaction-contentful-paint': InteractionContentfulPaint[];
'layout-shift': LayoutShift[];
'largest-contentful-paint': LargestContentfulPaint[];
'long-animation-frame': PerformanceLongAnimationFrameTiming[];
'paint': PerformancePaintTiming[];
'navigation': PerformanceNavigationTiming[];
'resource': PerformanceResourceTiming[];
'soft-navigation': PerformanceSoftNavigation[];
}
/**
* Takes a performance entry type and a callback function, and creates a
* `PerformanceObserver` instance that will observe the specified entry type
* with buffering enabled and call the callback _for each entry_.
*
* This function also feature-detects entry support and wraps the logic in a
* try/catch to avoid errors in unsupporting browsers.
*/
export declare const observe: <K extends keyof PerformanceEntryMap>(types: K[], callback: (entries: Array<PerformanceEntryMap[K][number]>) => void, opts?: PerformanceObserverInit) => PerformanceObserver | undefined;
export {};