js-queue-stack

queue.ts

function Queue<T>() {
  let data: Record<string, T> = {}
  let head = 0
  let tail = 0
  
  this.enqueue = function(item: T): void {
    data[tail] = item;
    tail++;
  }
  
  this.dequeue = function(): T {
    let item = data[head];
    delete data[head];
    head++;
    return item
  }
}