♻️ Improve typing

Author: Tomas2D

src/Task.ts

@@ -20,7 +20,7 @@ class Task<T> implements Promise<T>, Deletable {
     this.promise.catch(() => {});
   }
 
-  destructor() {
+  destructor(): void {
     this.reject(new TaskDestroyedException('Object already destroyed'));
   }
 

src/TaskMap.ts

@@ -16,7 +16,7 @@ class TaskMap<K, V extends Deletable> extends Map<K, V> {
     return super.set(key, value);
   }
 
-  clear() {
+  clear(): void {
     for (const key of this.keys()) {
       this.delete(key);
     }