Apache TinkerPop™ is a graph computing framework for both graph databases (OLTP) and graph analytic systems (OLAP). Gremlin is the graph traversal language of TinkerPop. It can be described as a functional, data-flow language that enables users to succinctly express complex traversals on (or queries of) their application's property graph.
npm install gremlin
Please see the reference documentation at Apache TinkerPop for more information.
NOTE that versions suffixed with "-rc" are considered release candidates (i.e. pre-alpha, alpha, beta, etc.) and thus for early testing purposes only.