function deleteAt (indexer) {
    let index = Number(indexer[0]);

    if (validateIndex(array, index)) {
      return
    }

    array = array
      .slice(0, index)
      .concat(array.slice(index + 1))
      .slice(0);
    output.value += array.join(' ') + '\n'
  }


function end (args) {
        if(args.length!==0){
            output.value += 'Error: invalid command parameters' + '\n'
            return;
        }
        output.value += 'Finished\n';
    }