Method processEntry

src/service/performance-impl.js:409–458

(entry)

    let recordedFirstInputDelay = false;
    let recordedNavigation = false;
    const processEntry = (entry) => {
      if (entry.name == 'first-paint' && !recordedFirstPaint) {
        this.tickDelta(
          TickLabel_Enum.FIRST_PAINT,
          entry.startTime + entry.duration
        );
        recordedFirstPaint = true;
      } else if (
        entry.name == 'first-contentful-paint' &&
        !recordedFirstContentfulPaint
      ) {
        const value = entry.startTime + entry.duration;
        this.tickDelta(TickLabel_Enum.FIRST_CONTENTFUL_PAINT, value);
        this.tickSinceVisible(
          TickLabel_Enum.FIRST_CONTENTFUL_PAINT_VISIBLE,
          value
        );
        recordedFirstContentfulPaint = true;
      } else if (
        entry.entryType === 'first-input' &&
        !recordedFirstInputDelay
      ) {
        const value = entry.processingStart - entry.startTime;
        this.tickDelta(TickLabel_Enum.FIRST_INPUT_DELAY, value);
        recordedFirstInputDelay = true;
      } else if (entry.entryType === 'layout-shift') {
        // Ignore layout shift that occurs within 500ms of user input, as it is
        // likely in response to the user's action.
        if (!entry.hadRecentInput) {
          this.tickLayoutShiftScore_(entry);
          this.layoutShiftSum_ += entry.value;
        }
      } else if (entry.entryType === 'largest-contentful-paint') {
        this.tickLargestContentfulPaint_(entry);
      } else if (entry.entryType == 'navigation' && !recordedNavigation) {
        [
          'domComplete',
          'domContentLoadedEventEnd',
          'domContentLoadedEventStart',
          'domInteractive',
          'loadEventEnd',
          'loadEventStart',
          'requestStart',
          'responseStart',
        ].forEach((label) => this.tick(label, entry[label]));
        recordedNavigation = true;
      } else if (entry.entryType == 'event' && entry.interactionId) {
        this.tickInteractionToNextPaint_(entry.duration);
      }
    };

    const entryTypesToObserve = [];
    if (this.win.PerformancePaintTiming) {