refactor: generateExample with zod array handler

Author: omermecitoglu

src/utils/generateExample.test.ts

@@ -101,6 +101,11 @@ describe("generateExample", () => {
     expect(generateExample(schema, true)).toBe(undefined);
   });
 
+  it("should generate an example from a zod array", () => {
+    expect(generateExample(z.string().array(), true)).toStrictEqual(["example string"]);
+    expect(generateExample(z.number().array(), true)).toStrictEqual([1]);
+  });
+
   it("should throw an error from an unknown zod schema", () => {
     const schema = z.unknown();
     expect(() => generateExample(schema, false)).toThrow("Unknown zod schema");

src/utils/generateExample.ts

@@ -1,4 +1,4 @@
-import { ZodBigInt, ZodBoolean, ZodEnum, ZodNull, ZodNullable, ZodNumber, ZodObject, ZodOptional, ZodString, type ZodType, type ZodTypeDef, ZodUndefined } from "zod";
+import { ZodArray, ZodBigInt, ZodBoolean, ZodEnum, ZodNull, ZodNullable, ZodNumber, ZodObject, ZodOptional, ZodString, type ZodType, type ZodTypeDef, ZodUndefined } from "zod";
 
 export default function generateExample<I, O>(
   schema: ZodType<O, ZodTypeDef, I>,
@@ -99,5 +99,8 @@ export default function generateExample<I, O>(
     }
     return "example string" as unknown as O;
   }
+  if (schema instanceof ZodArray) {
+    return [generateExample(schema._def.type, ignoreOptionals)] as unknown as O;
+  }
   throw new Error("Unknown zod schema");
 }