cal.pub0.org/packages/lib/server/perfObserver.ts

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import { PerformanceObserver } from "perf_hooks";
import logger from "../logger";
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declare global {
// eslint-disable-next-line no-var
var perfObserver: PerformanceObserver | undefined;
}
export const perfObserver =
globalThis.perfObserver ||
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new PerformanceObserver((items) => {
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items.getEntries().forEach((entry) => {
// Log entry duration in seconds with four decimal places.
logger.debug(entry.name.replace("$1", `${(entry.duration / 1000.0).toFixed(4)}s`));
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});
});
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perfObserver.observe({ entryTypes: ["measure"] });
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if (process.env.NODE_ENV !== "production") {
globalThis.perfObserver = perfObserver;
}
export default perfObserver;
export { performance } from "perf_hooks";