Function setInjectorProfiler

packages/core/src/render3/debug/injector_profiler.ts:234–246

(injectorProfiler: InjectorProfiler | null)

 * @returns a cleanup function that, when invoked, removes a given profiler callback.
 */
export function setInjectorProfiler(injectorProfiler: InjectorProfiler | null): () => void {
  !ngDevMode && throwError('setInjectorProfiler should never be called in production mode');

  if (injectorProfiler !== null) {
    if (!injectorProfilerCallbacks.includes(injectorProfiler)) {
      injectorProfilerCallbacks.push(injectorProfiler);
    }
    return () => removeProfiler(injectorProfiler);
  } else {
    injectorProfilerCallbacks.length = 0;
    return NOOP_PROFILER_REMOVAL;
  }
}

/**
 * Injector profiler function which emits on DI events executed by the runtime.