interface Performance

Deno supports User Timing Level 3 which is not widely supported yet in other runtimes.

Check out the Performance API documentation on MDN for further information about how to use the API.

#mark(markName: string,
options?: PerformanceMarkOptions,
): PerformanceMark

Stores a timestamp with the associated name (a "mark").

#measure(measureName: string,
options?: PerformanceMeasureOptions,
): PerformanceMeasure

Stores the DOMHighResTimeStamp duration between two marks along with the associated name (a "measure").

#timeOrigin: number

readonly

Returns a timestamp representing the start of the performance measurement.

#clearMarks(markName?: string): void

Removes the stored timestamp with the associated name.

#clearMeasures(measureName?: string): void

Removes stored timestamp with the associated name.

#getEntries(): PerformanceEntryList

#getEntriesByName(name: string,
type?: string,
): PerformanceEntryList

#getEntriesByType(type: string): PerformanceEntryList

#mark(markName: string,
options?: PerformanceMarkOptions,
): PerformanceMark

Stores a timestamp with the associated name (a "mark").

#measure(measureName: string,
options?: PerformanceMeasureOptions,
): PerformanceMeasure

Stores the DOMHighResTimeStamp duration between two marks along with the associated name (a "measure").

#measure(measureName: string,
startMark?: string,
endMark?: string,
): PerformanceMeasure

Stores the DOMHighResTimeStamp duration between two marks along with the associated name (a "measure").

#now(): number

Returns a current time from Deno's start in fractional milliseconds.

const t = performance.now();
console.log(`${t} ms since start!`);

#toJSON(): any

Returns a JSON representation of the performance object.

variable Performance

#prototype: Performance

readonly