Function buildZoneAwareStackFrames

packages/zone.js/lib/common/error-rewrite.ts:67–113

(
      originalStack: string,
      zoneFrame: _ZoneFrame | ZoneFrameName | null,
      isZoneFrame = true,
    )

    }

    function buildZoneAwareStackFrames(
      originalStack: string,
      zoneFrame: _ZoneFrame | ZoneFrameName | null,
      isZoneFrame = true,
    ) {
      let frames: string[] = originalStack.split('\n');
      let i = 0;
      // Find the first frame
      while (
        !(
          frames[i] === zoneAwareFrame1 ||
          frames[i] === zoneAwareFrame2 ||
          frames[i] === zoneAwareFrame1WithoutNew ||
          frames[i] === zoneAwareFrame2WithoutNew ||
          frames[i] === zoneAwareFrame3WithoutNew
        ) &&
        i < frames.length
      ) {
        i++;
      }
      for (; i < frames.length && zoneFrame; i++) {
        let frame = frames[i];
        if (frame.trim()) {
          switch (zoneJsInternalStackFrames[frame]) {
            case FrameType.zoneJsInternal:
              frames.splice(i, 1);
              i--;
              break;
            case FrameType.transition:
              if (zoneFrame.parent) {
                // This is the special frame where zone changed. Print and process it accordingly
                zoneFrame = zoneFrame.parent;
              } else {
                zoneFrame = null;
              }
              frames.splice(i, 1);
              i--;
              break;
            default:
              frames[i] += isZoneFrame
                ? ` [${(zoneFrame as _ZoneFrame).zone.name}]`
                : ` [${(zoneFrame as ZoneFrameName).zoneName}]`;
          }
        }
      }
      return frames.join('\n');
    }
    /**
     * This is ZoneAwareError which processes the stack frame and cleans up extra frames as well as
     * adds zone information to it.