Function containsNode

packages/react-reconciler/src/ReactFiberScope.js:174–183

(this: $FlowFixMe, node: Object)

}

function containsNode(this: $FlowFixMe, node: Object): boolean {
  let fiber = getInstanceFromNode(node);
  while (fiber !== null) {
    if (fiber.tag === ScopeComponent && fiber.stateNode === this) {
      return true;
    }
    fiber = fiber.return;
  }
  return false;
}

function getChildContextValues<T>(
  this: $FlowFixMe,