Algorithms: Inventory Update - Cannot Pass Test

Tell us what’s happening:
For some reason the code below doesn’t pass the test in the challenge.
I’ve compared my result with the expected result in the test and it’s identical.
Using result.toString() === expected.toString() also returns true.

So far I don’t have any clue on what’s wrong with my code, probably I missed something.

Your code so far


const updateItem = (item, newItem) => [item[0] + newItem[0], newItem[1]];

const sortInventory = (arr = []) => arr.sort((a, b) => a[1] > b[1]);

const updateInventory = (arr1 = [], arr2 = []) => {
  const updatedInv = arr1.map(item => {
    const newItem = arr2.filter(newItem => newItem[1] === item[1])[0];
    return newItem ? updateItem(item, newItem) : item;
  }).concat(arr2.filter(newItem => {
    return !arr1.filter(item => newItem[1] === item[1]).length;
  }));
  return sortInventory(updatedInv);
}

// Example inventory lists
const curInv = [
  [21, "Bowling Ball"],
  [2, "Dirty Sock"],
  [1, "Hair Pin"],
  [5, "Microphone"]
];

const newInv = [
  [2, "Hair Pin"],
  [3, "Half-Eaten Apple"],
  [67, "Bowling Ball"],
  [7, "Toothpaste"]
];

updateInventory(curInv, newInv);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36.

Link to the challenge:
//https://learn.freecodecamp.org/coding-interview-prep/algorithms/inventory-update

What tests are you not passing?

Sorry just noticed the reply.

Nevermind, it looks like there’s a problem with my sorting function.
After I refactored it the test completed without problem.

Thanks.