1. class Queue {
  2. constructor() {
  3. this.items = []; // Use an array as a simple queue implementation
  4. }
  6. enqueue(element) {
  7. this.items.push(element); // Add to the end
  8. }
  10. dequeue() {
  11. if (this.isEmpty()) {
  12. return { error: "Queue is empty" }; // Simple error message
  13. }
  14. return this.items.shift(); // Remove from the beginning
  15. }
  17. peek() {
  18. if (this.isEmpty()) {
  19. return { error: "Queue is empty" }; // Simple error message
  20. }
  21. return this.items[0];
  22. }
  24. isEmpty() {
  25. return this.items.length === 0;
  26. }
  28. size() {
  29. return this.items.length;
  30. }
  31. }
  33. // Example Usage (for development/testing)
  34. const myQueue = new Queue();
  36. myQueue.enqueue("item1");
  37. myQueue.enqueue("item2");
  39. console.log("Dequeued:", myQueue.dequeue()); // Output: item1
  40. console.log("Dequeued:", myQueue.dequeue()); // Output: item2
  41. console.log("Is empty:", myQueue.isEmpty()); // Output: true
  42. console.log("Dequeued:", myQueue.dequeue()); // Output: { error: "Queue is empty" }

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