new approach

src/common/CircularList.ts

@@ -100,6 +100,24 @@ export class CircularList<T> extends EventEmitter implements ICircularList<T> {
     }
   }
 
+  /**
+   * Recycling push variant with a callback.
+   * The callback gets the value at the current position to be overwritten.
+   * Return the new value from the callback.
+   */
+  public pushRecycling(callback: (el: T | undefined) => T): void {
+    this._array[this._getCyclicIndex(this._length)] = callback(this._array[this._getCyclicIndex(this._length)]);
+    if (this._length === this._maxLength) {
+      this._startIndex++;
+      if (this._startIndex === this._maxLength) {
+        this._startIndex = 0;
+      }
+      this.emit('trim', 1);
+    } else {
+      this._length++;
+    }
+  }
+
   /**
    * Removes and returns the last value on the list.
    * @return The popped value.