Function transferActualDuration

packages/react-reconciler/src/ReactProfilerTimer.js:685–695

(fiber: Fiber)

}

export function transferActualDuration(fiber: Fiber): void {
  // Transfer time spent rendering these children so we don't lose it
  // after we rerender. This is used as a helper in special cases
  // where we should count the work of multiple passes.
  let child = fiber.child;
  while (child) {
    // $FlowFixMe[unsafe-addition] addition with possible null/undefined value
    fiber.actualDuration += child.actualDuration;
    child = child.sibling;
  }
}

export function startAnimating(lanes: Lanes): void {
  animatingLanes |= lanes;