Cryptic error message on "setup-only" service.

[HatiGamedev]

Just noticed if you create a service with only a Service#setup(...) function and app.use(...) it.
You get a cryptic error message ( my guess - it's coming from express ), "Router.use() requires middleware function but got a Object".

Example:

// Error
const SomeService = {
    setup(app, path) {}
}
​
// No Error
​
const AnoterService = {
    setup(app, path) {},
    create(data, params, cb) {}
}
​
​
app.use('/some', SomeService); // cryptic error
app.use('/another', AnotherService); // Fine

[ekryski]

@HatiEth great bug report! Thank you. This is cryptic. This might stay open for a bit but we'll definitely address this.

[lock]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue with a link to this issue for related bugs.