Function mapRemainingChildren

docs/index.js:6280–6287

(currentFirstChild)

    return null;
  }
  function mapRemainingChildren(currentFirstChild) {
    for (var existingChildren = new Map(); null !== currentFirstChild; )
      null !== currentFirstChild.key
        ? existingChildren.set(currentFirstChild.key, currentFirstChild)
        : existingChildren.set(currentFirstChild.index, currentFirstChild),
        (currentFirstChild = currentFirstChild.sibling);
    return existingChildren;
  }
  function useFiber(fiber, pendingProps) {
    fiber = createWorkInProgress(fiber, pendingProps);
    fiber.index = 0;