cartesian.js

const collection = [
  { attributeValue: ["RED", "GOLD"] },
  { attributeValue: ["16G", "32G", "64G"] },
  { attributeValue: ["PLUS"] }
]

function cartesian(data) {
  const f = (a,b) => [].concat(...a.map(d => b.map(e => [].concat(d, e))))
  const recurse = (a, b, ...c) => (b? recurse(f(a, b), ...c): a)
  return recurse(...data)
}

const values = collection.map(row => row.attributeValue)
console.log(cartesian(values).map(row => row.join(' / ')))

/*
[ 'RED / 16G / PLUS',
  'RED / 32G / PLUS',
  'RED / 64G / PLUS',
  'GOLD / 16G / PLUS',
  'GOLD / 32G / PLUS',
  'GOLD / 64G / PLUS' ]
*/