13 lines
557 B
TypeScript
13 lines
557 B
TypeScript
export interface PerformanceEntryHandler {
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(entry: PerformanceEntry): void;
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}
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/**
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* Takes a performance entry type and a callback function, and creates a
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* `PerformanceObserver` instance that will observe the specified entry type
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* with buffering enabled and call the callback _for each entry_.
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*
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* This function also feature-detects entry support and wraps the logic in a
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* try/catch to avoid errors in unsupporting browsers.
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*/
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export declare const observe: (type: string, callback: PerformanceEntryHandler) => PerformanceObserver | undefined;
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