lodash/internal/initCloneArray.js

define([], function() {

  /** Used for built-in method references. */
  var objectProto = Object.prototype;

  /** Used to check objects for own properties. */
  var hasOwnProperty = objectProto.hasOwnProperty;

  /**
   * Initializes an array clone.
   *
   * @private
   * @param {Array} array The array to clone.
   * @returns {Array} Returns the initialized clone.
   */
  function initCloneArray(array) {
    var length = array.length,
        result = array.constructor(length);

    // Add properties assigned by `RegExp#exec`.
    if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
      result.index = array.index;
      result.input = array.input;
    }
    return result;
  }

  return initCloneArray;
});