Creating an multidimensional array from ES6 generator

Question

Here is a generator creating a normal array. What is the quickest way of creating a multi dimensional array?

let seq = [...makeSequence(100)];
* makeSequence(max) {
 for (let i = 0; i < max; i++) {
 yield i;
 }
}

• Nina Scholz: what do you mean with multidimensional?
• Michael: just a simple matrix.
• trincot: So actually twodimensional...
• Michael: indeed. eg. [[2, 1], [4, 3]]
• trincot: And what do you expect to be iterated? The outer array? What would an individual yield return? An array?

Answer 1

If the iterator should return the top-level elements (which would be arrays themselves), then you could use recursion and so support any depth of array nesting:

function * makeSequence(max, dimensionCount = 1) {
 for (let i = 0; i < max; i++) {
 yield dimensionCount <= 1 ? i : [...makeSequence(max, dimensionCount-1)];
 }
}
let seq = [...makeSequence(5, 2)];
console.log(seq);