Function mountLazyComponent

lib/assets/react-source/development/react.js:21011–21102

(_current, workInProgress, elementType, updateExpirationTime, renderExpirationTime)

	}

	function mountLazyComponent(_current, workInProgress, elementType, updateExpirationTime, renderExpirationTime) {
	  if (_current !== null) {
	    // A lazy component only mounts if it suspended inside a non-
	    // concurrent tree, in an inconsistent state. We want to treat it like
	    // a new mount, even though an empty version of it already committed.
	    // Disconnect the alternate pointers.
	    _current.alternate = null;
	    workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect

	    workInProgress.effectTag |= Placement;
	  }

	  var props = workInProgress.pendingProps; // We can't start a User Timing measurement with correct label yet.
	  // Cancel and resume right after we know the tag.

	  cancelWorkTimer(workInProgress);
	  var Component = readLazyComponentType(elementType); // Store the unwrapped component in the type.

	  workInProgress.type = Component;
	  var resolvedTag = workInProgress.tag = resolveLazyComponentTag(Component);
	  startWorkTimer(workInProgress);
	  var resolvedProps = resolveDefaultProps(Component, props);
	  var child;

	  switch (resolvedTag) {
	    case FunctionComponent:
	      {
	        {
	          validateFunctionComponentInDev(workInProgress, Component);
	          workInProgress.type = Component = resolveFunctionForHotReloading(Component);
	        }

	        child = updateFunctionComponent(null, workInProgress, Component, resolvedProps, renderExpirationTime);
	        return child;
	      }

	    case ClassComponent:
	      {
	        {
	          workInProgress.type = Component = resolveClassForHotReloading(Component);
	        }

	        child = updateClassComponent(null, workInProgress, Component, resolvedProps, renderExpirationTime);
	        return child;
	      }

	    case ForwardRef:
	      {
	        {
	          workInProgress.type = Component = resolveForwardRefForHotReloading(Component);
	        }

	        child = updateForwardRef(null, workInProgress, Component, resolvedProps, renderExpirationTime);
	        return child;
	      }

	    case MemoComponent:
	      {