Function updateTextNode

dash/deps/react-dom@18.3.1.js:13264–13276

(returnFiber, current, textContent, lanes)

    }

    function updateTextNode(returnFiber, current, textContent, lanes) {
      if (current === null || current.tag !== HostText) {
        // Insert
        var created = createFiberFromText(textContent, returnFiber.mode, lanes);
        created.return = returnFiber;
        return created;
      } else {
        // Update
        var existing = useFiber(current, textContent);
        existing.return = returnFiber;
        return existing;
      }
    }

    function updateElement(returnFiber, current, element, lanes) {
      var elementType = element.type;