Class PerfLogger

packages/models/src/logger.ts:217–275

 * @public
 */
export class PerfLogger implements Logger {
  private marks: Map<string, number> = new Map();

  /**
   * create new PerfLogger
   */
  constructor() {}

  /** {@inheritDoc Logger.isEnabled} */
  isEnabled(): boolean {
    return false;
  }

  /** {@inheritDoc Logger.debug} */
  debug(source: string, category: string, ...args: any) {}

  /** {@inheritDoc Logger.info} */
  info(source: string, category: string, ...args: any) {}

  /** {@inheritDoc Logger.warn} */
  warn(source: string, category: string, ...args: any) {}

  /** {@inheritDoc Logger.error} */
  error(source: string, category: string, ...args: any) {}

  /** {@inheritDoc Logger.perf} */
  perf(
    source: string,
    category: string,
    event: string,
    phase: 'Begin' | 'End',
    identifier: string,
    ...args: any
  ) {
    const markName = `${source}.${category}.${event}.${phase}.${identifier}`;

    switch (phase) {
      case 'Begin':
        globalThis.performance.mark(markName, { detail: args });
        this.marks.set(`${source}.${category}.${event}.${identifier}`, Date.now());
        break;
      case 'End':
        globalThis.performance.mark(markName, { detail: args });
        const measureName = `${source}.${category}.${event}.Measure.${identifier}`;
        const beginMark = `${source}.${category}.${event}.Begin.${identifier}`;

        globalThis.performance.measure(measureName, beginMark, markName);

        // Log duration to console
        const startTime = this.marks.get(`${source}.${category}.${event}.${identifier}`);
        if (startTime) {
          const duration = Date.now() - startTime;
          console.info(`⏱️ ${source}.${category}.${event}.${identifier}: ${duration}ms`);
          this.marks.delete(`${source}.${category}.${event}.${identifier}`);
        }
        break;
    }
  }