For example:
<img width="1904" alt="Screen Shot 2021-11-05 at 11 59 05 AM" src="https://user-images.githubusercontent.com/29597/140540816-25d6d47b-7aea-4121-aeaa-565accc65b1f.png">

profilerData: ReactProfilerData,
  laneLabelTuplesString: string,
): void {
  
  
  if (profilerData.laneToLabelMap.size === 0) {
    const laneLabelTuples = laneLabelTuplesString.split(',');
    for (let laneIndex = 0; laneIndex < laneLabelTuples.length; laneIndex++) {
      
      
      
      profilerData.laneToLabelMap.set(laneIndex, laneLabelTuples[laneIndex]);
    }
  }
}
let profilerVersion = null;
function getLastType(stack: $PropertyType<ProcessorState, 'measureStack'>) {
  if (stack.length > 0) {
    const {type} = stack[stack.length - 1];
    return type;
  }
  return null;
}
function getDepth(stack: $PropertyType<ProcessorState, 'measureStack'>) {