Function isForkedChild

packages/react-reconciler/src/ReactFiberTreeContext.js:89–92

(workInProgress: Fiber)

let treeContextOverflow: string = '';

export function isForkedChild(workInProgress: Fiber): boolean {
  warnIfNotHydrating();
  return (workInProgress.flags & Forked) !== NoFlags;
}

export function getForksAtLevel(workInProgress: Fiber): number {
  warnIfNotHydrating();