Function profiler

packages/core/src/render3/profiler.ts:55–60

(event, instance = null, eventFn)

 *    The value depends on the execution context
 */
export const profiler: Profiler = function (event, instance = null, eventFn): void {
  for (let i = 0; i < profilerCallbacks.length; i++) {
    const profilerCallback = profilerCallbacks[i];
    profilerCallback(event, instance, eventFn);
  }
};