refactor(app/decorator/validator): improve typing for zod validator

src/App/Decorator/Validator.ts

@@ -5,10 +5,15 @@ import { z } from "zod";
 import { MetadataValidatorConstant } from "App/Types/ControllerConstant.js";
 import type Controller from "Controller/Controller.js";
 
+type ZodData<V> = { [VK in keyof V]: any };
+
 /**
- * Set the path for route function.
+ * Validate data for route.
+ *
+ * @param method - Target of request
+ * @param data - Data to validate
  */
-export default function validator<T extends {}>(method: keyof ValidationTargets, data: T): Function {
+export default function validator<T extends {}>(method: keyof ValidationTargets, data: ZodData<T>): Function {
     return function decorate(target: Controller, propKey: string, descriptor: PropertyDescriptor): void {
         const targetFunc = descriptor.value as Function;
         Reflect.defineMetadata(

src/Controller/HelloController.ts

@@ -1,12 +1,11 @@
-import type { ZodString } from "zod";
 import { z } from "zod";
 import httpRoute from "App/Decorator/HttpRoute.js";
 import validator from "App/Decorator/Validator.js";
 import type { DefaultHonoContext, HonoInputContext } from "App/Types/ControllerTypes.js";
 import Controller from "./Controller.js";
 
 type HelloValidator = {
-    message: ZodString | string;
+    message: string;
 };
 
 export default class HelloController extends Controller {
@@ -15,15 +14,12 @@ export default class HelloController extends Controller {
         return c.text("Say hello world!");
     }
 
-    /**
-     * TODO [2024-02-26]: Set In/Out Typing for Validator whatever it takes.
-     */
     @httpRoute("post", "/api")
     @validator<HelloValidator>("json", {
         message: z.string()
     })
     public helloApi(c: HonoInputContext<HelloValidator>): Response {
         const { message } = c.req.valid("json");
-        return c.json(`Message: ${message as string}`);
+        return c.json(`Message: ${message}`);
     }
 }