text: // The MIT License (MIT)
  //
  // xibbit 1.5.1 Copyright (c) © 2021 Daniel W. Howard and Sanjana A. Joshi Partnership
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in all
  // copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  // SOFTWARE.
  //
  // @version 1.5.1
  // @copyright xibbit 1.5.1 Copyright (c) © 2021 Daniel W. Howard and Sanjana A. Joshi Partnership
  // @license http://opensource.org/licenses/MIT
  /**
   * Return true if this array is numeric.
   *
   * @param a array An array.
   * @return boolean True if it is a numeric array.
   *
   * @author DanielWHoward
   **/
  function has_numeric_keys(a) {
    return a instanceof Array;
  }
  exports.has_numeric_keys = has_numeric_keys;
  /**
   * Return true if this array is associative.
   *
   * An associative array has at least one string key.
   *
   * @param a array An array.
   * @return boolean True if it is an associative array.
   *
   * @author DanielWHoward
   **/
  function has_string_keys(a) {
    return (typeof a === 'object') && (a.constructor.name === 'Object');
  }
  exports.has_string_keys = has_string_keys;
  /**
   * Concatenate arrays with numerical indices.
   *
   * @return array The concatenated array.
   *
   * @author DanielWHoward
   **/
  function array_concat() {
    var a = [];
    for (var i=0; i < arguments.length; ++i) {
      a = a.concat(arguments[i]);
    }
    return a;
  }
  exports.array_concat = array_concat;
  /**
   * Merge keys of objects with string indices.
   *
   * @return object The merged object.
   *
   * @author DanielWHoward
   **/
  function array_merge(a, b) {
    return Object.assign({}, a, b);
  }
  exports.array_merge = array_merge;
  