Socket.IO Version Output

Question

I upgraded socket.io from 0.9.16 to 1.0.6, and used to output the version like this:

var io = require('socket.io');
console.log("**Socket.IO Version: "+io.version);

and would give me

**Socket.IO Version: 0.9.16

after I updated to 1.0.6, I get:

**Socket.IO Version: undefined

any help? Thanks!

Answer 1

You can do it this way:

console.log("**Socket.IO Version: " + require('socket.io/package').version);

The idea is to load package.json file, which contains information about a Node package.

This is possible because Node's require is able to load JSON modules as well.
From the docs:

If the exact filename is not found, then node will attempt to load the required filename with the added extension of .js, .json, and then .node.

.js files are interpreted as JavaScript text files, and .json files are parsed as JSON text files [...]