Sometimes you need to store so much data in memory that V8 can get a bit clogged up. This Node.js module provides an interface to a native hashmap data structure that exists outside of V8's memory constraints.

To install, simply:

npm install hashmap

Everything you might want to do first requires a new HashMap object (which corresponds to a native c++ unordered_map):

var HashMap = require('hashmap');
var hashmap = new HashMap();

And that's it!