Create a 3D grid in uvw coordinates for THREE.js (pure function, no loops)

createUVWGrid.js

const createUVWGrid = ([cx, cy, cz]) => {
  return times(cx).map(x => times(cy).map((y) => times(cz).map(z =>
    new THREE.Vector3(
      cx <= 1 ? 0.5 : x / (cx - 1), 
      cy <= 1 ? 0.5 : y / (cy - 1),
      cz <= 1 ? 0.5 : z / (cz - 1)
    )
  ))).flat(2)
}

const times = (n) => Array.from(new Array(n)).map((_, i) => i)