@trap_stevo/legendarybuilderpronodejs-utilities/dist/cjs/HUDComponents/Queue.js

The legendary computational utility API that makes your application a legendary application. ~ Created by Steven Compton

const EventEmitter = require("events");











class Queue extends EventEmitter
{
     constructor()
     {
          super();
          
          this.queue = [];
     }
     
     add(data)
     {
          this.queue.push(data);
          
          this.emit("itemAdded", data, this.size());
     }
     
     current()
     {
          if (this.empty())
          {
               return null;
          }
          
          const currentItem = this.queue.shift();
          
          const nextItem = this.peek();
          
          this.emit("itemProcessed", currentItem, this.size());
          
          if (nextItem)
          {
               this.emit("processingItem", nextItem, this.size());
          }
          
          return currentItem;
     }
     
     peek()
     {
          if (this.empty())
          {
               return null;
          }

          return this.queue[0];
     }
     
     get(index)
     {
          if (index < 0 || index >= this.queue.length)
          {
               return null;
          }
          
          return this.queue[index];
     }
     
     findBy(predicate)
     {
          return this.queue.find(predicate) || null;
     }
     
     empty()
     {
          return this.queue.length === 0;
     }
     
     size()
     {
          return this.queue.length;
     }
     
     clear()
     {
          this.queue = [];
          
          this.emit("queueCleared", this.queue);
     }
     
     toArray()
     {
          return [...this.queue];
     }
     
     contains(item)
     {
          return this.queue.includes(item);
     }
     
     remove(item)
     {
          const index = this.queue.indexOf(item);
          
          if (index !== -1)
          {
               const removedItem = this.queue.splice(index, 1)[0];
               
               this.emit("itemRemoved", removedItem, this.size());
          }
     }
};

module.exports = Queue;