class LimitedArray {

  constructor(size = 100) {
    let _array = [];
    let _limit = size;

    this.push = item => {
      _array.push(item);
      if (_array.length > _limit) 
        _array.shift();
            
    };

    this.get = () => _array;

    this.limit = size => {
      _limit = size;
      if (_array.length > _limit) 
        _array = _array.slice(_array.length - _limit);
            
    };

    this.length = () => _array.length;

    this.add = items => {
      _array = _array.concat(items);

      if (_array.length > _limit) 
        _array = _array.slice(_array.length - _limit);
            
    };
  }

}

module.exports = LimitedArray;