choose.js

Copyright 2015-2021 JC Fisher

import { ERRORTYPES as error } from "./error";

CHOOSE accepts an index and a list of items. It returns the item that corresponds to the index.

export default function choose(index, ...items) {

Return #NA! if index or items are not provided.

  if (!index || items.length === 0) {
    return error.na;
  }

Return #VALUE! if index is less than 1 or greater than 254.

  if (index < 1 || index > 254) {
    return error.value;
  }

Return #VALUE! if number of items is less than index.

  if (items.length < index) {
    return error.value;
  }

Return the item.

  return items[index - 1];
}