skip mapping in case no id exists

apps/typesync/src/Generator.ts

@@ -367,11 +367,21 @@ export function buildMappingFile(schema: Domain.InsertAppSchema) {
   const typeMappings: string[] = [];
 
   for (const type of schema.types) {
+    // Skip types without a valid knowledgeGraphId
+    if (!type.knowledgeGraphId) {
+      continue;
+    }
+
     const properties: string[] = [];
     const relations: string[] = [];
 
     // Process properties and relations
     for (const property of type.properties) {
+      // Skip properties without a valid knowledgeGraphId
+      if (!property.knowledgeGraphId) {
+        continue;
+      }
+
       if (Domain.isDataTypeRelation(property.dataType)) {
         // This is a relation
         relations.push(`      ${Utils.toCamelCase(property.name)}: Id.Id('${property.knowledgeGraphId}')`);

apps/typesync/test/Generator.test.ts

@@ -76,4 +76,128 @@ export const mapping: Mapping = {
     });
     expect(mapping).toBe(expectedMapping);
   });
+
+  it('should skip a type entry without a knowledgeGraphId', () => {
+    const expectedMapping = `import { Id } from '@graphprotocol/grc-20';
+import type { Mapping } from '@graphprotocol/hypergraph';
+
+export const mapping: Mapping = {
+  Space: {
+    typeIds: [Id.Id('362c1dbd-dc64-44bb-a3c4-652f38a642d7')],
+    properties: {
+      name: Id.Id('a126ca53-0c8e-48d5-b888-82c734c38935'),
+      description: Id.Id('9b1f76ff-9711-404c-861e-59dc3fa7d037'),
+    },
+  },
+};`;
+
+    const mapping = buildMappingFile({
+      name: 'test',
+      description: 'test',
+      directory: 'test',
+      template: 'vite_react',
+      types: [
+        {
+          name: 'Space',
+          knowledgeGraphId: '362c1dbd-dc64-44bb-a3c4-652f38a642d7',
+          properties: [
+            {
+              name: 'Name',
+              knowledgeGraphId: 'a126ca53-0c8e-48d5-b888-82c734c38935',
+              dataType: 'Text',
+            },
+            {
+              name: 'Description',
+              knowledgeGraphId: '9b1f76ff-9711-404c-861e-59dc3fa7d037',
+              dataType: 'Text',
+            },
+          ],
+        },
+        {
+          name: 'new type',
+          knowledgeGraphId: null,
+          properties: [
+            {
+              name: 'new prop',
+              knowledgeGraphId: null,
+              dataType: 'Text',
+            },
+          ],
+        },
+      ],
+    });
+    expect(mapping).toBe(expectedMapping);
+  });
+
+  it('should skip a property entry without a knowledgeGraphId', () => {
+    const expectedMapping = `import { Id } from '@graphprotocol/grc-20';
+import type { Mapping } from '@graphprotocol/hypergraph';
+
+export const mapping: Mapping = {
+  Space: {
+    typeIds: [Id.Id('362c1dbd-dc64-44bb-a3c4-652f38a642d7')],
+    properties: {
+      name: Id.Id('a126ca53-0c8e-48d5-b888-82c734c38935'),
+      description: Id.Id('9b1f76ff-9711-404c-861e-59dc3fa7d037'),
+    },
+  },
+  Activity: {
+    typeIds: [Id.Id('8275c359-4662-40fb-9aec-27177b520cd2')],
+    properties: {
+      name: Id.Id('a126ca53-0c8e-48d5-b888-82c734c38935'),
+    },
+    relations: {
+      relatedSpaces: Id.Id('5b722cd3-61d6-494e-8887-1310566437ba'),
+    },
+  },
+};`;
+
+    const mapping = buildMappingFile({
+      name: 'test',
+      description: 'test',
+      directory: 'test',
+      template: 'vite_react',
+      types: [
+        {
+          name: 'Space',
+          knowledgeGraphId: '362c1dbd-dc64-44bb-a3c4-652f38a642d7',
+          properties: [
+            {
+              name: 'Name',
+              knowledgeGraphId: 'a126ca53-0c8e-48d5-b888-82c734c38935',
+              dataType: 'Text',
+            },
+            {
+              name: 'Description',
+              knowledgeGraphId: '9b1f76ff-9711-404c-861e-59dc3fa7d037',
+              dataType: 'Text',
+            },
+          ],
+        },
+        {
+          name: 'Activity',
+          knowledgeGraphId: '8275c359-4662-40fb-9aec-27177b520cd2',
+          properties: [
+            {
+              name: 'Name',
+              knowledgeGraphId: 'a126ca53-0c8e-48d5-b888-82c734c38935',
+              dataType: 'Text',
+            },
+            {
+              name: 'Description',
+              knowledgeGraphId: null,
+              dataType: 'Text',
+            },
+            {
+              name: 'Related spaces',
+              knowledgeGraphId: '5b722cd3-61d6-494e-8887-1310566437ba',
+              dataType: 'Relation(Related spaces)',
+              relationType: 'Related spaces',
+            },
+          ],
+        },
+      ],
+    });
+    expect(mapping).toBe(expectedMapping);
+  });
 });