function mapValuesSeries(obj, iteratee, callback) {
        return mapValuesLimit$1(obj, 1, iteratee, callback)
    }
The same as [`mapValues`]{@link module:Collections.mapValues} but runs only a single async operation at a time.

@name mapValuesSeries
@static
@memberOf module:Collections
@method
@see [async.mapValues]{@link module:Collections.mapValues}
@category Collection
@param {Object} obj - A collection to iterate over.
@param {AsyncFunction} iteratee - A function to apply to each value and key
in `coll`.
The iteratee should complete with the transformed value as its result.
Invoked with (value, key, callback).
@param {Function} [callback] - A callback which is called when all `iteratee`
functions have finished, or an error occurs. `result` is a new object consisting
of each key from `obj`, with each transformed value on the right-hand side.
Invoked with (err, result).
@returns {Promise} a promise, if no callback is passed