Function setTextContent

docs/external/js/react-dom.development.js:2686–2697

(node, text)

   */

  var setTextContent = function (node, text) {
    if (text) {
      var firstChild = node.firstChild;

      if (firstChild && firstChild === node.lastChild && firstChild.nodeType === TEXT_NODE) {
        firstChild.nodeValue = text;
        return;
      }
    }

    node.textContent = text;
  };

  // Do not use the below two methods directly!
  // Instead use constants exported from DOMTopLevelEventTypes in ReactDOM.