refactor

src/async/impl.ts

@@ -216,27 +216,29 @@ export abstract class BaseAsyncSequence<TElement> extends AsyncSequenceMarker im
   }
 
   async #tryGetLast(predicate?: MaybeAsyncAnyPredicate<TElement>): Promise<FindElementResult<TElement>> {
-    let found = false;
-    let result: TElement | undefined = undefined;
+    let result: FindElementResult<TElement> = {
+      found: false
+    };
 
     if (predicate) {
       for await (const element of this) {
         if (await predicate(element)) {
-          found = true;
-          result = element;
+          result = {
+            found: true,
+            element
+          };
         }
       }
     } else {
       for await (const element of this) {
-        found = true;
-        result = element;
+        result = {
+          found: true,
+          element
+        };
       }
     }
 
-    return {
-      found,
-      element: result
-    } as FindElementResult<TElement>;
+    return result;
   }
 
   async last(predicate?: MaybeAsyncAnyPredicate<TElement>) {
@@ -1687,7 +1689,7 @@ class TakeAsyncSequence<T> extends BaseAsyncSequence<T> {
         return;
       }
 
-      yield next.value as T;
+      yield next.value;
       i--;
     }
   }