Medium - DS in Javascript - Queue - pop()

queue.js

function Queue() {
  this.values = [];
  this.count = 0;
}

Queue.prototype.enqueue = (newValue) => {
  this.values[this.count] = newValue;
  this.count++;
}

Queue.prototype.dequeue = () => {
  if (this.count === 0) {
    return null; // If the list is empty, you can't pop
  }
  
  const value = this.values[0]; // Store the first value in the queue in a temporary variable
  const arrayAfterDeletion = this.values.slice(1, this.count - 1); // Store everything after the first value in a temporary array.
  
  this.values = [...arrayAfterDeletion]; // Re-write our list of values
  
  return value;
}