Challenge #8: 🏬 Sorting the warehouse

The elves are very busy in Santa Claus' workshop organizing gifts 🎁 for Christmas Eve 🎄.

The input format is special, as it indicates the number of gifts and the type of gift with letters from a to z. For example, '66a11b' means 66 a gifts and 11 b gifts.

The elves have a special system for organizing the gifts:

Every 10 gifts of the same type are packed in a box, represented by {x}. For example, 20 type a gifts are packed in two boxes like this: {a}{a}.
Every 5 boxes are stacked on a pallet, represented by [x]. For example, 10 a boxes are stacked on 2 pallets in this way: [a][a].
Any additional gift is placed in a bag, represented by () and all of them are placed inside. For example, 4 b gifts are placed in a bag like this (bbbb).

The gifts are then placed in the following order: pallets, boxes, and bags. And the gifts appear in the same order as the input string.

Your task is to write a function organizeGifts that takes a string of gifts as an argument and returns a string representing the warehouse.

const result1 = organizeGifts('76a11b')
console.log(result1)
// `[a]{a}{a}(aaaaaa){b}(b)`

/* Explanation:

  76a: 76 gifts type 'a' would be packed in 7 boxes and 6 gifts would be left, resulting in 1 pallet [a] (for the first 5 boxes), 2 loose boxes {a}{a} and a bag with 6 gifts (aaaaaa)

  11b: 11 gifts type 'b' would be packed in 1 box and 1 gift would be left, resulting in 1 loose box {b} and a bag with 1 gift (b)