When registering a callback, multivents does not set a context for the callback execution. That means, this will fall back on the global object. If you want to explicitly want a callback to be executed in a given context, you can specify that context by providing on with a bound function. This will forever determine the context in which the callback function will be executed.
var channel = new Channel();
var bob = { name : 'Bob' };
channel.on('greet', function () {
console.log('Hello, I\'m ' + this.name + '!');
}.bind(bob));
channel.emit('greet'); // 'Hello, I'm Bob!'The bob object is used as the callback's this as the callback was bound to it.
There is no way to inject the context any other way.