diff --git a/tests/unit/mappers/docs-mapper.test.ts b/tests/unit/mappers/docs-mapper.test.ts
index b560dbf..85eb4b9 100644
--- a/tests/unit/mappers/docs-mapper.test.ts
+++ b/tests/unit/mappers/docs-mapper.test.ts
@@ -318,17 +318,18 @@ Use this node when you need to process large datasets in smaller chunks.
 
       const result = await docsMapper.fetchDocumentation('splitInBatches');
 
-      expect(result).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
-      expect(result).toContain('⚠️ OUTPUT INDICES ARE COUNTERINTUITIVE ⚠️');
-      expect(result).toContain('Output 0 (index 0) = "done"');
-      expect(result).toContain('Output 1 (index 1) = "loop"');
-      expect(result).toContain('Correct Connection Pattern:');
-      expect(result).toContain('Common Mistake:');
-      expect(result).toContain('AI assistants often connect these backwards');
+      expect(result).not.toBeNull();
+      expect(result!).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
+      expect(result!).toContain('⚠️ OUTPUT INDICES ARE COUNTERINTUITIVE ⚠️');
+      expect(result!).toContain('Output 0 (index 0) = "done"');
+      expect(result!).toContain('Output 1 (index 1) = "loop"');
+      expect(result!).toContain('Correct Connection Pattern:');
+      expect(result!).toContain('Common Mistake:');
+      expect(result!).toContain('AI assistants often connect these backwards');
       
       // Should insert before "When to use" section
-      const insertionIndex = result.indexOf('## When to use');
-      const guidanceIndex = result.indexOf('CRITICAL OUTPUT CONNECTION INFORMATION');
+      const insertionIndex = result!.indexOf('## When to use');
+      const guidanceIndex = result!.indexOf('CRITICAL OUTPUT CONNECTION INFORMATION');
       expect(guidanceIndex).toBeLessThan(insertionIndex);
       expect(guidanceIndex).toBeGreaterThan(0);
     });
@@ -347,10 +348,11 @@ This node splits data into batches.
 
       const result = await docsMapper.fetchDocumentation('splitInBatches');
 
-      expect(result).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
+      expect(result).not.toBeNull();
+      expect(result!).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
       // Should be inserted at the beginning since no "When to use" section
-      expect(result.indexOf('CRITICAL OUTPUT CONNECTION INFORMATION')).toBeLessThan(
-        result.indexOf('# Split In Batches Node')
+      expect(result!.indexOf('CRITICAL OUTPUT CONNECTION INFORMATION')).toBeLessThan(
+        result!.indexOf('# Split In Batches Node')
       );
     });
 
@@ -420,15 +422,16 @@ Configure your conditions here.
 
       const result = await docsMapper.fetchDocumentation('n8n-nodes-base.if');
 
-      expect(result).toContain('Output Connection Information');
-      expect(result).toContain('Output 0 (index 0) = "true"');
-      expect(result).toContain('Output 1 (index 1) = "false"');
-      expect(result).toContain('Items that match the condition');
-      expect(result).toContain('Items that do not match the condition');
+      expect(result).not.toBeNull();
+      expect(result!).toContain('Output Connection Information');
+      expect(result!).toContain('Output 0 (index 0) = "true"');
+      expect(result!).toContain('Output 1 (index 1) = "false"');
+      expect(result!).toContain('Items that match the condition');
+      expect(result!).toContain('Items that do not match the condition');
 
       // Should insert before "Node parameters" section
-      const parametersIndex = result.indexOf('## Node parameters');
-      const outputInfoIndex = result.indexOf('Output Connection Information');
+      const parametersIndex = result!.indexOf('## Node parameters');
+      const outputInfoIndex = result!.indexOf('Output Connection Information');
       expect(outputInfoIndex).toBeLessThan(parametersIndex);
       expect(outputInfoIndex).toBeGreaterThan(0);
     });
@@ -483,10 +486,11 @@ Use this node to route data.
 
       const result = await docsMapper.fetchDocumentation('splitInBatches');
 
-      expect(result).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
+      expect(result).not.toBeNull();
+      expect(result!).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
       // Should be prepended when no insertion point found (but there's a newline before original content)
-      const guidanceIndex = result.indexOf('CRITICAL OUTPUT CONNECTION INFORMATION');
-      expect(guidanceIndex).toBeLessThan(result.indexOf('Simple content'));
+      const guidanceIndex = result!.indexOf('CRITICAL OUTPUT CONNECTION INFORMATION');
+      expect(guidanceIndex).toBeLessThan(result!.indexOf('Simple content'));
       expect(guidanceIndex).toBeLessThanOrEqual(5); // Allow for some whitespace
     });
 
@@ -496,8 +500,9 @@ Use this node to route data.
 
       const result = await docsMapper.fetchDocumentation('splitInBatches');
 
-      expect(result).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
-      expect(result.length).toBeGreaterThan(0);
+      expect(result).not.toBeNull();
+      expect(result!).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
+      expect(result!.length).toBeGreaterThan(0);
     });
 
     it('should handle content with multiple "When to use" sections', async () => {
@@ -515,10 +520,11 @@ Detailed usage.
 
       const result = await docsMapper.fetchDocumentation('splitInBatches');
 
-      expect(result).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
+      expect(result).not.toBeNull();
+      expect(result!).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
       // Should insert before first occurrence
-      const firstWhenToUse = result.indexOf('## When to use (overview)');
-      const guidanceIndex = result.indexOf('CRITICAL OUTPUT CONNECTION INFORMATION');
+      const firstWhenToUse = result!.indexOf('## When to use (overview)');
+      const guidanceIndex = result!.indexOf('CRITICAL OUTPUT CONNECTION INFORMATION');
       expect(guidanceIndex).toBeLessThan(firstWhenToUse);
     });
 
@@ -538,7 +544,8 @@ Content here.
       const result = await docsMapper.fetchDocumentation('splitInBatches');
 
       // Should still add enhancement (method doesn't check for existing enhancements)
-      const criticalSections = (result.match(/CRITICAL OUTPUT CONNECTION INFORMATION/g) || []).length;
+      expect(result).not.toBeNull();
+      const criticalSections = (result!.match(/CRITICAL OUTPUT CONNECTION INFORMATION/g) || []).length;
       expect(criticalSections).toBe(2); // Original + new enhancement
     });
 
@@ -548,8 +555,9 @@ Content here.
 
       const result = await docsMapper.fetchDocumentation('splitInBatches');
 
-      expect(result).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
-      expect(result.length).toBeGreaterThan(largeContent.length);
+      expect(result).not.toBeNull();
+      expect(result!).toContain('CRITICAL OUTPUT CONNECTION INFORMATION');
+      expect(result!.length).toBeGreaterThan(largeContent.length);
     });
   });
 
diff --git a/tests/unit/parsers/node-parser-outputs.test.ts b/tests/unit/parsers/node-parser-outputs.test.ts
index 89d5195..800d4fa 100644
--- a/tests/unit/parsers/node-parser-outputs.test.ts
+++ b/tests/unit/parsers/node-parser-outputs.test.ts
@@ -306,10 +306,12 @@ describe('NodeParser - Output Extraction', () => {
       expect(result.outputNames).toEqual(['done', 'loop']);
       
       // Verify the counterintuitive order: done=0, loop=1
-      expect(result.outputs[0].displayName).toBe('Done');
-      expect(result.outputs[1].displayName).toBe('Loop');
-      expect(result.outputNames[0]).toBe('done');
-      expect(result.outputNames[1]).toBe('loop');
+      expect(result.outputs).toBeDefined();
+      expect(result.outputNames).toBeDefined();
+      expect(result.outputs![0].displayName).toBe('Done');
+      expect(result.outputs![1].displayName).toBe('Loop');
+      expect(result.outputNames![0]).toBe('done');
+      expect(result.outputNames![1]).toBe('loop');
     });
 
     it('should handle Switch node with multiple outputs', () => {
@@ -406,8 +408,9 @@ describe('NodeParser - Output Extraction', () => {
       const result = parser.parse(NodeClass, 'n8n-nodes-base');
       
       expect(result.outputs).toHaveLength(2);
-      expect(result.outputs[0].displayName).toBe('Done');
-      expect(result.outputs[1].displayName).toBe('Loop');
+      expect(result.outputs).toBeDefined();
+      expect(result.outputs![0].displayName).toBe('Done');
+      expect(result.outputs![1].displayName).toBe('Loop');
       expect(result.outputNames).toEqual(['done', 'loop']);
     });
 
@@ -442,8 +445,9 @@ describe('NodeParser - Output Extraction', () => {
       const result = parser.parse(NodeClass, 'n8n-nodes-base');
       
       expect(result.outputs).toHaveLength(2);
-      expect(result.outputs[0].displayName).toBe('True');
-      expect(result.outputs[1].displayName).toBe('False');
+      expect(result.outputs).toBeDefined();
+      expect(result.outputs![0].displayName).toBe('True');
+      expect(result.outputs![1].displayName).toBe('False');
       expect(result.outputNames).toEqual(['true', 'false']);
     });
 
diff --git a/tests/unit/services/loop-output-edge-cases.test.ts b/tests/unit/services/loop-output-edge-cases.test.ts
index 93507ac..85916cc 100644
--- a/tests/unit/services/loop-output-edge-cases.test.ts
+++ b/tests/unit/services/loop-output-edge-cases.test.ts
@@ -82,7 +82,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should not crash or produce output-related errors
       expect(result).toBeDefined();
@@ -113,7 +113,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         connections: {}
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       expect(result).toBeDefined();
       expect(result.valid).toBeTruthy(); // Empty workflow with webhook should be valid
@@ -147,7 +147,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should warn about self-reference but not crash
       const selfRefWarnings = result.warnings.filter(w => 
@@ -188,7 +188,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       const negativeIndexErrors = result.errors.filter(e => 
         e.message?.includes('Invalid connection index -1')
@@ -234,7 +234,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should validate without crashing (n8n allows large indices)
       expect(result).toBeDefined();
@@ -266,7 +266,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should handle gracefully without crashing
       expect(result).toBeDefined();
@@ -306,7 +306,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should handle malformed connections but report errors
       expect(result).toBeDefined();
@@ -366,7 +366,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         connections
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should warn about missing loop back because depth limit prevents detection
       const loopBackWarnings = result.warnings.filter(w => 
@@ -423,7 +423,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should complete without hanging and warn about missing loop back
       expect(result).toBeDefined();
@@ -469,7 +469,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should warn about missing loop back and self-reference
       const loopBackWarnings = result.warnings.filter(w => 
@@ -526,7 +526,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should handle without performance issues
       expect(result).toBeDefined();
@@ -589,7 +589,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should validate all connection types
       expect(result).toBeDefined();
@@ -615,7 +615,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         connections: {}
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should not produce SplitInBatches-specific warnings for isolated node
       const splitWarnings = result.warnings.filter(w => 
@@ -657,7 +657,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should NOT warn about empty loop output (it's only a problem if loop connects to something but doesn't loop back)
       // An empty loop output is valid - it just means no looping occurs
@@ -703,7 +703,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Both outputs go to same node which loops back - should be valid
       // No warnings about loop back since it does connect back
@@ -749,7 +749,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should error about reversed outputs since function node on done output connects back
       const reversedErrors = result.errors.filter(e => 
@@ -776,7 +776,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         connections: {}
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should report unknown node type error
       const unknownNodeErrors = result.errors.filter(e => 
@@ -817,7 +817,7 @@ describe('Loop Output Fix - Edge Cases', () => {
       };
 
       const startTime = Date.now();
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
       const duration = Date.now() - startTime;
 
       // Should complete within reasonable time (< 5 seconds)
@@ -855,7 +855,7 @@ describe('Loop Output Fix - Edge Cases', () => {
         connections
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should validate all nodes without performance issues
       expect(result).toBeDefined();
diff --git a/tests/unit/services/workflow-validator-loops-simple.test.ts b/tests/unit/services/workflow-validator-loops-simple.test.ts
index 1c16e4f..a9c4339 100644
--- a/tests/unit/services/workflow-validator-loops-simple.test.ts
+++ b/tests/unit/services/workflow-validator-loops-simple.test.ts
@@ -64,7 +64,7 @@ describe('WorkflowValidator - SplitInBatches Validation (Simplified)', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should complete validation without crashing
       expect(result).toBeDefined();
@@ -114,7 +114,7 @@ describe('WorkflowValidator - SplitInBatches Validation (Simplified)', () => {
           }
         };
 
-        const result = await validator.validateWorkflow(workflow);
+        const result = await validator.validateWorkflow(workflow as any);
         
         // Should identify potential processing nodes
         expect(result).toBeDefined();
@@ -163,7 +163,7 @@ describe('WorkflowValidator - SplitInBatches Validation (Simplified)', () => {
           }
         };
 
-        const result = await validator.validateWorkflow(workflow);
+        const result = await validator.validateWorkflow(workflow as any);
         
         // Should not warn about final nodes on done output
         expect(result).toBeDefined();
@@ -205,7 +205,7 @@ describe('WorkflowValidator - SplitInBatches Validation (Simplified)', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       const negativeIndexErrors = result.errors.filter(e => 
         e.message?.includes('Invalid connection index -1')
@@ -239,7 +239,7 @@ describe('WorkflowValidator - SplitInBatches Validation (Simplified)', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       const missingNodeErrors = result.errors.filter(e => 
         e.message?.includes('non-existent node')
@@ -276,7 +276,7 @@ describe('WorkflowValidator - SplitInBatches Validation (Simplified)', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should not warn about self-reference for SplitInBatches
       const selfRefWarnings = result.warnings.filter(w => 
@@ -311,7 +311,7 @@ describe('WorkflowValidator - SplitInBatches Validation (Simplified)', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should warn about self-reference for non-loop nodes
       const selfRefWarnings = result.warnings.filter(w => 
@@ -368,7 +368,7 @@ describe('WorkflowValidator - SplitInBatches Validation (Simplified)', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should validate without major errors
       expect(result).toBeDefined();
@@ -399,7 +399,7 @@ describe('WorkflowValidator - SplitInBatches Validation (Simplified)', () => {
         connections: {}
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should handle gracefully without crashing
       expect(result).toBeDefined();
@@ -422,7 +422,7 @@ describe('WorkflowValidator - SplitInBatches Validation (Simplified)', () => {
         connections: {}
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should report unknown node error
       const unknownErrors = result.errors.filter(e => 
diff --git a/tests/unit/services/workflow-validator-loops.test.ts b/tests/unit/services/workflow-validator-loops.test.ts
index 920e29b..fdeb18c 100644
--- a/tests/unit/services/workflow-validator-loops.test.ts
+++ b/tests/unit/services/workflow-validator-loops.test.ts
@@ -98,7 +98,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // The validator should detect the processing node name/type pattern and loop back
       const reversedErrors = result.errors.filter(e => 
@@ -125,7 +125,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         // No loop back from Process Item
       });
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       expect(result.warnings).toContainEqual(
         expect.objectContaining({
@@ -153,7 +153,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       });
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       expect(result.warnings).toContainEqual(
         expect.objectContaining({
@@ -182,7 +182,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         // Process Item doesn't connect back to Split In Batches
       });
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       expect(result.warnings).toContainEqual(
         expect.objectContaining({
@@ -241,7 +241,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should not have SplitInBatches-specific errors or warnings
       const splitErrors = result.errors.filter(e => 
@@ -317,7 +317,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(complexWorkflow);
+      const result = await validator.validateWorkflow(complexWorkflow as any);
 
       // Should accept this correct structure without warnings
       const loopWarnings = result.warnings.filter(w => 
@@ -369,7 +369,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
           }
         };
 
-        const result = await validator.validateWorkflow(workflow);
+        const result = await validator.validateWorkflow(workflow as any);
         
         const hasProcessingWarning = result.warnings.some(w => 
           w.message?.includes('appears to be a processing node')
@@ -409,7 +409,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should not warn about missing loop back since it exists
       const missingLoopBackWarnings = result.warnings.filter(w => 
@@ -454,7 +454,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should not warn about missing loop back since indirect loop exists
       const missingLoopBackWarnings = result.warnings.filter(w => 
@@ -507,7 +507,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         connections
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should warn about missing loop back because depth limit prevents detection
       const missingLoopBackWarnings = result.warnings.filter(w => 
@@ -546,7 +546,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should complete without hanging and warn about missing loop back
       const missingLoopBackWarnings = result.warnings.filter(w => 
@@ -578,7 +578,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should not warn about self-reference for SplitInBatches
       const selfReferenceWarnings = result.warnings.filter(w => 
@@ -607,7 +607,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should warn about self-reference for non-loop nodes
       const selfReferenceWarnings = result.warnings.filter(w => 
@@ -639,7 +639,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should have connection error for non-existent node
       const connectionErrors = result.errors.filter(e => 
@@ -669,7 +669,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should not crash and should not have SplitInBatches-specific errors
       expect(result).toBeDefined();
@@ -696,7 +696,7 @@ describe('WorkflowValidator - Loop Node Validation', () => {
         }
       };
 
-      const result = await validator.validateWorkflow(workflow);
+      const result = await validator.validateWorkflow(workflow as any);
 
       // Should handle gracefully without crashing
       expect(result).toBeDefined();