csw5-collect.js

const collect = (node, pre, pattern, q) => {
  if (!node) { return }
  let d = pre.length
  if (d === pattern.length && node.value) { q.push(pre) }
  if (d === pattern.length) { return }

  let next
  pattern[d] === '.'
    ? next = '.'
    : next = Base26.getBase26Digit(pattern[d])

  for (let c = 0; c < R; c++) {
    if (next === '.' || next === c) {
      collect(node.next[c], pre + (Base26.getUTF16(c)), pattern, q)
    }
  }
}