gistfile1.txt

function inventory(arr1, arr2) {
    // All inventory must be accounted for or you're fired!
  arr2.forEach(function(a, i1){
    var index = -1;
    arr1.forEach(function(b, i2){
      if(b[1] === a  [1]){
        index = i2;
      }
    });
    if(index !== -1){
      arr1[index][0] += arr2[i1][1];
    }else{
      arr1.push(arr2[i1]);
    }
  });
  
  
    return arr1.sort(function(a, b){
      return a[1].localeCompare(b[1]);
    });
}