Using socket.io-client without browser

[gongxinheng]

I wander is it possible to use socket.io.js without browser?
Here is the scene:
We are using spidermonkey as a javascript engine to write cross-platform game client. All game logic is written in javascript. Servers are based on node.js.
I want to use socket.io.js in our client. I know we can use the c++ implementation of socket.io to achieve that by binding the socket.io API into js side. But I want to know is there a way to use socket.io.js directly in our project? We can't based on v8 engine since v8 is not supported in ios.