Function pushDispatcher

docs/external/js/react-dom.development.js:22158–22170

(root)

  }

  function pushDispatcher(root) {
    var prevDispatcher = ReactCurrentDispatcher$1.current;
    ReactCurrentDispatcher$1.current = ContextOnlyDispatcher;

    if (prevDispatcher === null) {
      // The React isomorphic package does not include a default dispatcher.
      // Instead the first renderer will lazily attach one, in order to give
      // nicer error messages.
      return ContextOnlyDispatcher;
    } else {
      return prevDispatcher;
    }
  }

  function popDispatcher(prevDispatcher) {
    ReactCurrentDispatcher$1.current = prevDispatcher;