refactor: update types to use Constructor for improved type safety and consistency

Author: hasib-devs

src/core/Application.ts

@@ -1,5 +1,5 @@
 import { Hono } from "hono";
-import type { RouteMetadata, ServerOptions } from "@/types";
+import type { Constructor, RouteMetadata, ServerOptions } from "@/types";
 import { defaultOptions } from "@/utils/constants";
 import { controllerMetadata, routeMetadata } from "@/utils/meta-data";
 import { Container } from "@/di/Container";
@@ -38,7 +38,7 @@ export class Application {
 
         this.app.route(this.options.basePath ?? '', baseGroup);
     }
-    private getControllerPath(Controller: Function): string {
+    private getControllerPath(Controller: Constructor): string {
         const path = controllerMetadata.get(Controller) ?? "";
         return path.replace(/\/$/, ""); // Normalize trailing slash
     }

src/decorators/Controller.ts

@@ -1,8 +1,9 @@
 import { Container } from "@/di/Container";
+import type { Constructor } from "@/types";
 import { controllerMetadata } from "@/utils/meta-data";
 
 export function Controller(path: string) {
-    return (target: Function) => {
+    return <T extends Constructor>(target: T) => {
         controllerMetadata.set(target, path);
         // Auto-register the controller as a singleton
         Container.register(target, () => new (target as any)(), "singleton");

src/index.ts

@@ -1,5 +1,5 @@
 import { Application } from './core/Application';
-import type { ServerOptions } from './types';
+import type { Constructor, ServerOptions } from './types';
 
 // -------------------------------------------------------------------------
 // Main exports

src/types/index.ts

@@ -1,6 +1,9 @@
+export type Constructor<T = {}> = new (...args: any[]) => T;
+
+
 export type ServerOptions = {
     basePath?: string;
-    controllers?: Function[];
+    controllers?: Constructor[];
     middlewares?: any[];
 };
 

src/utils/logger.ts

@@ -26,6 +26,6 @@ export class Logger {
     }
 
     public static debug(message: string): void {
-        console.log(`\x1b[34mDEBUG: ${message}\x1b[0m`);
+        console.log(`\x1b[35mDEBUG: ${message}\x1b[0m`);
     }
 }

src/utils/meta-data.ts

@@ -1,5 +1,5 @@
-import type { RouteMetadata } from "@/types";
+import type { Constructor, RouteMetadata } from "@/types";
 
-export const controllerMetadata = new WeakMap<Function, string>();
+export const controllerMetadata = new WeakMap<Constructor, string>();
 export const routeMetadata = new WeakMap<object, RouteMetadata[]>();
 export const injectionMetadata = new WeakMap<object, unknown[]>();