Function createFiberFromActivity

packages/react-reconciler/src/ReactFiber.js:834–844

(
  pendingProps: ActivityProps,
  mode: TypeOfMode,
  lanes: Lanes,
  key: null | string,
)

  return fiber;
}
export function createFiberFromActivity(
  pendingProps: ActivityProps,
  mode: TypeOfMode,
  lanes: Lanes,
  key: null | string,
): Fiber {
  const fiber = createFiber(ActivityComponent, pendingProps, key, mode);
  fiber.elementType = REACT_ACTIVITY_TYPE;
  fiber.lanes = lanes;
  return fiber;
}

export function createFiberFromViewTransition(
  pendingProps: ViewTransitionProps,