Function createFiberFromPortal

docs/index.js:13081–13095

(portal, mode, lanes)

  return content;
}
function createFiberFromPortal(portal, mode, lanes) {
  mode = createFiberImplClass(
    4,
    null !== portal.children ? portal.children : [],
    portal.key,
    mode
  );
  mode.lanes = lanes;
  mode.stateNode = {
    containerInfo: portal.containerInfo,
    pendingChildren: null,
    implementation: portal.implementation
  };
  return mode;
}
function markUpdate(workInProgress) {
  workInProgress.flags |= 4;
}