Function createChild

dash/deps/react-dom@18.3.1.js:13341–13395

(returnFiber, newChild, lanes)

    }

    function createChild(returnFiber, newChild, lanes) {
      if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number') {
        // Text nodes don't have keys. If the previous node is implicitly keyed
        // we can continue to replace it without aborting even if it is not a text
        // node.
        var created = createFiberFromText('' + newChild, returnFiber.mode, lanes);
        created.return = returnFiber;
        return created;
      }

      if (typeof newChild === 'object' && newChild !== null) {
        switch (newChild.$$typeof) {
          case REACT_ELEMENT_TYPE:
            {
              var _created = createFiberFromElement(newChild, returnFiber.mode, lanes);

              _created.ref = coerceRef(returnFiber, null, newChild);
              _created.return = returnFiber;
              return _created;
            }

          case REACT_PORTAL_TYPE:
            {
              var _created2 = createFiberFromPortal(newChild, returnFiber.mode, lanes);

              _created2.return = returnFiber;
              return _created2;
            }

          case REACT_LAZY_TYPE:
            {
              var payload = newChild._payload;
              var init = newChild._init;
              return createChild(returnFiber, init(payload), lanes);
            }
        }

        if (isArray(newChild) || getIteratorFn(newChild)) {
          var _created3 = createFiberFromFragment(newChild, returnFiber.mode, lanes, null);

          _created3.return = returnFiber;
          return _created3;
        }

        throwOnInvalidObjectType(returnFiber, newChild);
      }

      {
        if (typeof newChild === 'function') {
          warnOnFunctionType(returnFiber);
        }
      }

      return null;
    }

    function updateSlot(returnFiber, oldFiber, newChild, lanes) {
      // Update the fiber if the keys match, otherwise return null.