"use strict";

/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

/**
 * Returns the default provided value when the first value if null. If at least one array is passed into the function, the function will be applied index-wise to each element.
 * @param {(any|any[])} a array of any values
 * @param {(any)} b a value to use as fallback.
 * @return {(any|any[])} The `a` value if not null, `b` otherwise. Returns an array where each element is default to `b` when null, or kept the original value if `a` is an array.
 *
 * @example
 * defaults(null, 1) // returns 1
 * defaults([3, null, 5], 1) // returns [3, 1, 5]
 * defaults(5, 1) // returns 5
 */

module.exports = {
  defaults
};
function defaults(a, b) {
  if (Array.isArray(a)) {
    return a.map(v => v == null ? b : v);
  }
  return a == null ? b : a;
}
defaults.skipNumberValidation = true;