Add clearSubscriptions method

[mroderick]

This pull request implements a clearSubscriptions method, that has been requested in #41 and #60

[mroderick]

@aron do you think it would be more natural to use the unsubscribe method, and not a new clearSubscriptions method?

[aron]

This may also want to assert that it only cleared this topic, this test would also pass if all topics were cleared.

[mroderick]

Good point! I think it deserves a separate test, to make it clear what's going on

[aron]

@aron do you think it would be more natural to use the unsubscribe method, and not a new clearSubscriptions method?

Now you mention it, yes that feels more natural. Instead of having the wildcard you could have a clearAllSubscriptions method. Like Node's EventEmitter has removeAllListeners.

Otherwise this looks good. I couldn't get the tests to run locally. I ran:

$ git clone <repo> && cd PubSubJS
$ npm install
$ $(npm bin)/grunt test

Running "jslint" task

Running "buster" task
>> In order for this task to work properly, Buster.JS must be installed and in
>> the system PATH (if you can run "buster" atthe command line, this task should
>> work).To install Buster.JS, run `npm install -g buster`.
Warning: Task "buster" failed. Use --force to continue.

npm install -g buster fails, I think possibly due to a rename?

[mroderick]

Try running the tests with npm test

[aron]

@mroderick same issue. Does it work for you from a clean install? Bear in mind I don't have any packages installed globally.

[aron]

Getting closer. Removing th $(npm bin) from the package.json helps. npm adds the bin to the path for you. Now I just need phantomjs installed. Perhaps there's buster module to install phantom for you…?

https://github.com/mroderick/PubSubJS/blob/master/package.json#L11

[mroderick]

@mroderick same issue. Does it work for you from a clean install? Bear in mind I don't have any packages installed globally.

It does, it also works on Travis, so I think it's another case of your funky node environment :)

[aron]

Good to know :) At least I can trust Travis.

[aron]

Needs updating now.

[mroderick]

So it does. I've fixed that. Perhaps it'd be best to squash all these commits down, before merging

[aron]

🚢

[mroderick]

Thanks