Function markRef

docs/external/js/react-dom.development.js:17133–17140

(current, workInProgress)

  }

  function markRef(current, workInProgress) {
    var ref = workInProgress.ref;

    if (current === null && ref !== null || current !== null && current.ref !== ref) {
      // Schedule a Ref effect
      workInProgress.effectTag |= Ref;
    }
  }

  function updateFunctionComponent(current, workInProgress, Component, nextProps, renderExpirationTime) {
    {