JavaScript Queue

queue.js

function createQueue() {
  const queue = [];
  
  return {
    enqueue(item) {
      queue.unshift(item)
    },
    dequeue() {
      return queue.pop()
    },
    get length() {
      return queue.length
    },
    isEmpty() {
      return queue.length == 0
    }
  }
}

const myQueue = createQueue();

myQueue.isEmpty() // true

myQueue.enqueue('Make a sandwich')
myQueue.enqueue('Help others learn queue')
myQueue.enqueue('Be happy')

myQueue.length() // 3