tokenGetter does not support Promise

[jakubnavratil]

Description

While JWT_OPTIONS supports passing tokenGetter as function returning Promise, service does not work with that.

[frederikprijck]

Thanks for reporting, it does look like the JwtHelperService does not account for the tokenGetter to return a promise.

I will look into this and see how we can resolve this.

[frederikprijck]

👋 I opened a draft PR, would you be able to have a look and see if that would work for you?

I will be adding some more tests before merging that PR tho, as the SDK lacks alot of tests and I want to ensure we limit chances of breaking people with changes like this.