write access token in jwt callback with TypeScript

[kyduff]

I'd like to extract the access token from my authentication session to pass in the header of other API calls in an application. The docs suggest doing this by writing the access token to an additional field on the token object in the jwt callback when the user signs in:

callbacks: {
  async jwt({ token, account }) {
    // Persist the OAuth access_token to the token right after signin
    if (account) {
      token.accessToken = account.access_token
    }
    return token
  }
}

Confusingly the token object is a JWT type which doesn't have an accessToken field, producing an unknown type that breaks any downstream type checks. Unfortunately I can't find a workaround with a union or extending type because the jwt callback is expected to produce a JWT.

Has anyone else dealt with this problem and found a solution?

[BetweenTwoTests]

JWT does not have accessToken field as you said. You would need to use module augmentation as per documentation if you are using typescript. I believe the code you posted works fine for plain JavaScript.

Doc link: https://next-auth.js.org/getting-started/typescript#module-augmentation

Here's what I do to log the callbacks for learning the flow

[kyduff]

Thanks!

[LOGOLFGODORD]

If any of this is about my account accesses, please make sure to contact me privately Immediately before you do anything ! thanks ! Code of conduct please! Thanks, Justin ᐧ

…

On Mon, Jun 20, 2022 at 4:41 PM Kyle Duffy ***@***.***> wrote: I'd like to extract the access token from my authentication session to pass in the header of other API calls in an application. The docs <https://next-auth.js.org/configuration/callbacks#jwt-callback> suggest doing this by writing the access token to an additional field on the token object in the jwt callback when the user signs in: callbacks: { async jwt({ token, account }) { // Persist the OAuth access_token to the token right after signin if (account) { token.accessToken = account.access_token } return token }} Confusingly the token object is a JWT type which doesn't have an accessToken field, producing an unknown type that breaks any downstream type checks. Unfortunately I can't find a workaround with a union or extending type because the jwt callback is expected to produce a JWT. Has anyone else dealt with this problem and found a solution? — Reply to this email directly, view it on GitHub <#4735>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AYXI3IVDZGYXK6XOK5EVPGLVQDJQ3ANCNFSM5ZKBLV2A> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>