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