```
/* somewhere deep inside a module... */
var token = Tokens.create();
pair(email, token);
send(email, token);
```
```
/* in another module */
Tokens.create = function() {
crypto.randomBytes(48, function(ex, buf) {
var token = buf.toString('hex');
return token;
})
}
```
Will the `Tokens.create()` be ran in parallel to `pair(email, token)` and
`send(token, email)`? I'm trying to understand if i need to use a callback
or not here
Someone in IRC responded:
"just google for callbacks, in a nutshell when the second argument of
function is a function"
Tokens.create doesn't take a callback, but the function it calls,
`crypto.randomBytes`, does. So will `token = Tokens.create` be ran
asynchronously?
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