Function trace$

src/compat/performance/performance.ts:54–73

(traceId: string)

}

const trace$ = (traceId: string) => {
  // eslint-disable-next-line @typescript-eslint/prefer-optional-chain
  if (typeof window !== 'undefined' && window.performance?.mark) {
    const entries = window.performance.getEntriesByName(traceId, 'measure') || [];
    const startMarkName = `_${traceId}Start[${entries.length}]`;
    const endMarkName = `_${traceId}End[${entries.length}]`;
    return new Observable<void>(emitter => {
      window.performance.mark(startMarkName);
      emitter.next();
      return {
        unsubscribe: () => {
          window.performance.mark(endMarkName);
          window.performance.measure(traceId, startMarkName, endMarkName);
        }
      };
    });
  } else {
    return EMPTY;
  }
};

export const traceUntil = <T = any>(
  name: string,