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perf_hooks.ts
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/
perf_hooks.ts
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import { notImplemented } from "./_utils.ts";
const { PerformanceObserver, PerformanceEntry, performance: shimPerformance } =
globalThis as typeof globalThis & {
PerformanceEntry: PerformanceEntry;
// deno-lint-ignore no-explicit-any
PerformanceObserver: any;
};
const constants = {};
const performance:
& Omit<
Performance,
"clearMeasures" | "getEntries" | "getEntriesByName" | "getEntriesByType"
>
& {
// deno-lint-ignore no-explicit-any
eventLoopUtilization: any;
nodeTiming: Record<string, string>;
// deno-lint-ignore no-explicit-any
timerify: any;
// deno-lint-ignore no-explicit-any
timeOrigin: any;
} = {
clearMarks: (markName: string) => shimPerformance.clearMarks(markName),
eventLoopUtilization: () =>
notImplemented("eventLoopUtilization from performance"),
mark: (markName: string) => shimPerformance.mark(markName),
measure: (
measureName: string,
startMark?: string | PerformanceMeasureOptions,
endMark?: string,
): PerformanceMeasure => {
if (endMark) {
return shimPerformance.measure(
measureName,
startMark as string,
endMark,
);
} else {
return shimPerformance.measure(
measureName,
startMark as PerformanceMeasureOptions,
);
}
},
nodeTiming: {},
now: () => shimPerformance.now(),
timerify: () => notImplemented("timerify from performance"),
// deno-lint-ignore no-explicit-any
timeOrigin: (shimPerformance as any).timeOrigin,
};
const monitorEventLoopDelay = () =>
notImplemented(
"monitorEventLoopDelay from performance",
);
export default {
performance,
PerformanceObserver,
PerformanceEntry,
monitorEventLoopDelay,
constants,
};
export {
constants,
monitorEventLoopDelay,
performance,
PerformanceEntry,
PerformanceObserver,
};