Class DelegatingPerfRecorder

packages/compiler-cli/src/ngtsc/perf/src/recorder.ts:126–155

 * the same `NgCompiler` for a new compilation.
 */
export class DelegatingPerfRecorder implements PerfRecorder {
  constructor(public target: PerfRecorder) {}

  eventCount(counter: PerfEvent, incrementBy?: number): void {
    this.target.eventCount(counter, incrementBy);
  }

  phase(phase: PerfPhase): PerfPhase {
    return this.target.phase(phase);
  }

  inPhase<T>(phase: PerfPhase, fn: () => T): T {
    // Note: this doesn't delegate to `this.target.inPhase` but instead is implemented manually here
    // to avoid adding an additional frame of noise to the stack when debugging.
    const previousPhase = this.target.phase(phase);
    try {
      return fn();
    } finally {
      this.target.phase(previousPhase);
    }
  }

  memory(after: PerfCheckpoint): void {
    this.target.memory(after);
  }

  reset(): void {
    this.target.reset();
  }
}