facebook/react · error · Error

153

153

Error message

Resuming work not yet implemented.

What it means

Error "Resuming work not yet implemented." thrown in facebook/react.

Source

Thrown at packages/react-reconciler/src/ReactChildFiber.js:2125

  return reconcileChildFibers;
}

export const reconcileChildFibers: ChildReconciler =
  createChildReconciler(true);
export const mountChildFibers: ChildReconciler = createChildReconciler(false);

export function resetChildReconcilerOnUnwind(): void {
  // On unwind, clear any pending thenables that were used.
  thenableState = null;
  thenableIndexCounter = 0;
}

export function cloneChildFibers(
  current: Fiber | null,
  workInProgress: Fiber,
): void {
  if (current !== null && workInProgress.child !== current.child) {
    throw new Error('Resuming work not yet implemented.');
  }

  if (workInProgress.child === null) {
    return;
  }

  let currentChild = workInProgress.child;
  let newChild = createWorkInProgress(currentChild, currentChild.pendingProps);
  workInProgress.child = newChild;

  newChild.return = workInProgress;
  while (currentChild.sibling !== null) {
    currentChild = currentChild.sibling;
    newChild = newChild.sibling = createWorkInProgress(
      currentChild,
      currentChild.pendingProps,
    );
    newChild.return = workInProgress;

View on GitHub (pinned to eafeac097b)

When it happens

Trigger: Thrown at packages/react-reconciler/src/ReactChildFiber.js:2125 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of facebook/react@eafeac097b (2026-08-21). Data as JSON: /api/errors/c3355d96064b07f5. Report an issue: GitHub.