4.8.13 test (#3102)

* fix: loop index;edge parent check

* perf: reference invalid check

* fix: ts

packages/global/core/workflow/constants.ts

@@ -201,6 +201,7 @@ export enum NodeInputKeyEnum {
   nodeHeight = 'nodeHeight',
   // loop start
   loopStartInput = 'loopStartInput',
+  loopStartIndex = 'loopStartIndex',
   // loop end
   loopEndInput = 'loopEndInput',
 
@@ -258,7 +259,7 @@ export enum NodeOutputKeyEnum {
   loopArray = 'loopArray',
   // loop start
   loopStartInput = 'loopStartInput',
-  loopArrayIndex = 'loopArrayIndex',
+  loopStartIndex = 'loopStartIndex',
 
   // form input
   formInputResult = 'formInputResult'

packages/global/core/workflow/runtime/utils.ts

@@ -239,7 +239,7 @@ export const getReferenceVariableValue = ({
   nodes: RuntimeNodeItemType[];
   variables: Record<string, any>;
 }) => {
-  if (!value) return undefined;
+  if (!value) return value;
 
   // handle single reference value
   if (isValidReferenceValueFormat(value)) {
@@ -253,7 +253,7 @@ export const getReferenceVariableValue = ({
 
     const node = nodes.find((node) => node.nodeId === sourceNodeId);
     if (!node) {
-      return undefined;
+      return value;
     }
 
     return node.outputs.find((output) => output.id === outputId)?.value;

packages/global/core/workflow/template/system/loop/loopStart.ts

@@ -33,12 +33,18 @@ export const LoopStartNode: FlowNodeTemplateType = {
       label: '',
       required: true,
       value: ''
+    },
+    {
+      key: NodeInputKeyEnum.loopStartIndex,
+      renderTypeList: [FlowNodeInputTypeEnum.hidden],
+      valueType: WorkflowIOValueTypeEnum.number,
+      label: i18nT('workflow:Array_element_index')
     }
   ],
   outputs: [
     {
-      id: NodeOutputKeyEnum.loopArrayIndex,
-      key: NodeOutputKeyEnum.loopArrayIndex,
+      id: NodeOutputKeyEnum.loopStartIndex,
+      key: NodeOutputKeyEnum.loopStartIndex,
       label: i18nT('workflow:Array_element_index'),
       type: FlowNodeOutputTypeEnum.static,
       valueType: WorkflowIOValueTypeEnum.number