Function createFiberFromFragment

packages/react-reconciler/src/ReactFiber.js:746–755

(
  elements: ReactFragment,
  mode: TypeOfMode,
  lanes: Lanes,
  key: null | string,
)

}

export function createFiberFromFragment(
  elements: ReactFragment,
  mode: TypeOfMode,
  lanes: Lanes,
  key: null | string,
): Fiber {
  const fiber = createFiber(Fragment, elements, key, mode);
  fiber.lanes = lanes;
  return fiber;
}

function createFiberFromScope(
  scope: ReactScope,