1234567891011121314151617181920212223242526272829303132333435363738394041424344
define(['./_baseKeys', './_getTag', './isArrayLike', './isString', './_stringSize'], function(baseKeys, getTag, isArrayLike, isString, stringSize) {
  /** `Object#toString` result references. */  var mapTag = '[object Map]',      setTag = '[object Set]';
  /**   * Gets the size of `collection` by returning its length for array-like   * values or the number of own enumerable string keyed properties for objects.   *   * @static   * @memberOf _   * @since 0.1.0   * @category Collection   * @param {Array|Object|string} collection The collection to inspect.   * @returns {number} Returns the collection size.   * @example   *   * _.size([1, 2, 3]);   * // => 3   *   * _.size({ 'a': 1, 'b': 2 });   * // => 2   *   * _.size('pebbles');   * // => 7   */  function size(collection) {    if (collection == null) {      return 0;    }    if (isArrayLike(collection)) {      return isString(collection) ? stringSize(collection) : collection.length;    }    var tag = getTag(collection);    if (tag == mapTag || tag == setTag) {      return collection.size;    }    return baseKeys(collection).length;  }
  return size;});