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- export interface PerformanceEntryHandler {
- (entry: PerformanceEntry): void;
- }
- /**
- * 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: (type: string, callback: PerformanceEntryHandler) => PerformanceObserver | undefined;
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