Generate empty objects and arrays for non required object and array fields

client/src/utils/__tests__/schemaUtils.test.ts

@@ -37,6 +37,20 @@ describe("generateDefaultValue", () => {
     );
   });
 
+  test("generates empty array for non-required array", () => {
+    expect(generateDefaultValue({ type: "array", required: false })).toEqual([]);
+  });
+
+  test("generates empty object for non-required object", () => {
+    expect(generateDefaultValue({ type: "object", required: false })).toEqual({});
+  });
+
+  test("generates null for non-required primitive types", () => {
+    expect(generateDefaultValue({ type: "string", required: false })).toBe(null);
+    expect(generateDefaultValue({ type: "number", required: false })).toBe(null);
+    expect(generateDefaultValue({ type: "boolean", required: false })).toBe(null);
+  });
+
   test("generates object with properties", () => {
     const schema: JsonSchemaType = {
       type: "object",

client/src/utils/schemaUtils.ts

@@ -13,6 +13,8 @@ export function generateDefaultValue(schema: JsonSchemaType): JsonValue {
   }
 
   if (!schema.required) {
+    if (schema.type === "array") return [];
+    if (schema.type === "object") return {};
     return null;
   }