code: function basePickBy(object, props, predicate) {
    var index = -1,
        length = props.length,
        result = {};
  
    while (++index < length) {
      var key = props[index],
          value = object[key];
  
      if (predicate(value, key)) {
        baseAssignValue(result, key, value);
      }
    }
    return result;
  }
docs: The base implementation of  `_.pickBy` without support for iteratee shorthands.
  
  @private
  @param {Object} object The source object.
  @param {string[]} props The property identifiers to pick from.
  @param {Function} predicate The function invoked per property.
  @returns {Object} Returns the new object.