Is redis-lock incompatible with Memurai client of redis?

[jyoung4242]

C:\programming\memurai app\node_modules\redis-lock\index.js:23
                throw new Error("You must specify a client instance of http://github.com/mranney/node_redis");

passing instance of memurai client (instead of redis) and i get this error

[jyoung4242]

on index.js,

	if(!(client && client.SETNX)) {
		throw new Error("You must specify a client instance of http://github.com/mranney/node_redis");
	}

the client.setnx would need to be uppercase for node-redis
it doesn't throw the error when i modify it