refactor: use type which is closer to pre-defined typescript type for answer.ts

src/main/modules/ipc/annotations/answer.ts

@@ -1,6 +1,6 @@
 import { registerHandler } from '../ipc-server';
 
-export function answer(channel: IpcChannel): DecoratorFactory<IIpcController> {
+export function answer(channel: IpcChannel): IpcControllerMethodDecorator {
   return function (target: IIpcController, propertyKey): void {
     registerHandler(channel, target, propertyKey);
   };

types/decorator-factory.d.ts

@@ -1 +0,0 @@
-type DecoratorFactory<T> = (target: T, propertyKey: string, descriptor: PropertyDescriptor) => void;

types/ipc-controller-method-decorator.d.ts

@@ -0,0 +1,4 @@
+/**
+ * @see MethodDecorator
+ */
+type IpcControllerMethodDecorator = <T>(target: IIpcController, propertyKey: string, descriptor: TypedPropertyDescriptor<T>) => void