Allow arena to work as a node module alongside auth middleware.

[aaron-blondeau-dose]

I have been unable to find a way to add arena to an existing express app while also implementing authentication. The basePath parameter conflicts with any path other than "/" provided to express' use method. Allowing users to provide a new parameter called "mountPath" can alleviate this issue and allow configs like the following to work:

const arena = Arena({
    queues
}, {
    basePath: '/admin/',
    mountPath: '/',
    disableListen: true
})

app.use('/admin', basicAuth('foo', 'bar'), arena)

where basicAuth = https://github.com/expressjs/basic-auth-connect

[javorosas]

I'm looking forward to this

[elsbree]

Unless I'm reading this incorrectly, you intended for this to be listenOpts.mountPath || app.locals.appBasePath;, right?

[dbronin]

Any updates on this?

[bogdan]

I have no idea why it is not merged yet.
However, here is a workaround at the moment:

const arena = Arena({
    queues
}, {
    basePath: '/',
    disableListen: true
})

// powerhacking
arena.locals.appBasePath = "/admin"

app.use('/admin', basicAuth('foo', 'bar'), arena)

[skeggse]

This has been a long-requested feature. I'd like to move this along, but still don't have a ton of time to review. I don't immediately understand the distinction between the appBasePath and the mountPath. Along those lines, could we get some documentation in the readme describing how the new option functions and how it differs from the old?

[skeggse]

Merging #182 into this.