state param is not included in the Typescript interface for AuthenticateOptions

[louisnk]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the bug has not already been reported

Fastify version

4.x

Plugin version

No response

Node.js version

18.x

Operating system

Linux

Operating system version (i.e. 20.04, 11.3, 10)

Ubuntu 22.04

Description

This is a Typescript bug.

When using the Passport Google Oauth2 package to implement a Google auth strategy, we are unable to pass the state property though the passport.authenticate options object.

This works code-wise, but does not compile because the interface definition for AuthenticateOptions does not include state.

Working non-TS example here

This is basically an extension of #376 that only appears when devs have the misfortune of using typescript.

Steps to Reproduce

Example code:

const preValidation = async (
    request: FastifyRequest<{
      Querystring: {
        state?: string
      }
    }>,
    reply: FastifyReply,
  ): Promise<void> => {
   const state: string = request.query?.state || ""

  // return passport.authenticate("google", { state, assignProperty: 'state' })(request, reply)
  return passport.authenticate("google", { state, assignProperty: 'state' }, (() => null))(request, reply)
}
...
fastify.get("/auth/google", { preValidation }, async () => "never returns anywhere")

When swapping the commented out lines we get varying errors that state is not defined on the interface for either the SingleStrategyCallback or AuthenticateOptions.

Example: Object literal may only specify known properties, and 'state' does not exist in type 'AuthenticateOptions'.

Expected Behavior

A Typescript developer can pass a state property through the AuthenticateOptions object without error.

[louisnk]

Fixed with #596