Function updateTextNode

docs/index.js:6315–6325

(returnFiber, current, textContent, lanes)

    return newFiber;
  }
  function updateTextNode(returnFiber, current, textContent, lanes) {
    if (null === current || 6 !== current.tag)
      return (
        (current = createFiberFromText(textContent, returnFiber.mode, lanes)),
        (current.return = returnFiber),
        current
      );
    current = useFiber(current, textContent);
    current.return = returnFiber;
    return current;
  }
  function updateElement(returnFiber, current, element, lanes) {
    var elementType = element.type;
    if (elementType === REACT_FRAGMENT_TYPE)