Allow to add extraParams to token request and refresh token request

[Xbloud]

I am using OAuth public client with authorozation code flow, refresh token and resource imdicators (RFC 8707).
The mentioned RFC adds the resource parameter to the authorization, token and refresh token requests. Unfortunatelly, it is not possible to pass the resource parameter to the token request and refresh token request.

The mentioned resource parameter can be a single string or an array of strings which brings additional issue. extraParams of type Record cannot hold multiple items with the same key. Moreover, serialization to query string using UrlSearchParams does not convert a Record with a property of type array os strings correctly
An example of such a Record is { resource: [ "r1", "r2"]} which should be serialized to "resource=r1&resource=r2".

[larsilus]

Hi, this is also needed for Microsoft Graph OAuth2 Auth Code Flow. We need to set the parameter resource=https%3A%2F%2Fgraph.microsoft.com

As of now, your lib does not work for Microsoft OAuth.

[evert]

Thanks, helpful to know! Support specifically for resource is planned

[larsilus]

Please let me know, if i can quickly test the "resource" param or support you there. I am working for a project that needs a dependency free flexible library, that also can be used with other applications like Atlassian Jira.
Do you think, it will feasible to be added in a week or so (again, can i help or test?). We are currently in the process of selecting a oauth client library approach, and i like this lib here very much. Probably i can only stick to it, if microsoft can be connected.

[larsilus]

@evert great!

[evert]

@larsilus A quick test would def help ! Let me know =)