refactor(core): use generics for type casting

came across this while reviewing the code / readme. Making separate PRs for easier review. This usage was introduced in #1050

connected to #988

Author: virkt25

packages/core/src/application.ts

@@ -122,7 +122,7 @@ export class Application extends Context {
       const ctor = target as Constructor<T>;
       key = `servers.${ctor.name}`;
     }
-    return (await this.get(key)) as T;
+    return await this.get<T>(key);
   }
 
   /**
@@ -156,7 +156,7 @@ export class Application extends Context {
     const bindings = this.find(`${CoreBindings.SERVERS}.*`);
     await Promise.all(
       bindings.map(async binding => {
-        const server = (await this.get(binding.key)) as Server;
+        const server = await this.get<Server>(binding.key);
         return await fn(server);
       }),
     );
@@ -191,7 +191,7 @@ export class Application extends Context {
       .inScope(BindingScope.SINGLETON)
       .tag('component');
     // Assuming components can be synchronously instantiated
-    const instance = this.getSync(componentKey);
+    const instance = this.getSync<Component>(componentKey);
     mountComponent(this, instance);
   }
 }