Function _increaseSequence

client/vendors/mousetrap.js:670–676

* callback to increase the sequence level for this sequence and reset * all other sequences that were active * * @param {string} nextAction * @returns {Function}

(nextAction)

         * @returns {Function}
         */
        function _increaseSequence(nextAction) {
            return function() {
                _nextExpectedAction = nextAction;
                ++_sequenceLevels[combo];
                _resetSequenceTimer();
            };
        }

        /**
         * wraps the specified callback inside of another function in order