[oidc-provider]: Export Client adapter property #75655

Thanks for the discussion about "oidc-provider", some useful links for everyone:

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Pinging the DT module owners: @panva.

Yeah, it's just missing from the Client declaration. At runtime provider.Client.adapter exists (static getter in lib/models/client.js), and the other models already have static readonly adapter: Adapter in the types (BaseModel / BaseToken). Only Client is missing it, and I don't see it in the pending v9.13.0 sync (#75826) either.

Until it's added you can widen the type locally:

import Provider, { type Adapter } from "oidc-provider";

const { adapter } = provider.Client as typeof provider.Client & { readonly adapter: Adapter };
await adapter.upsert("temp-client", {
  client_id: "temp-client",
  client_secret: "test-secret",
  redirect_uris: ["http://localhost:3000/cb"],
});

With oidc-provider 9.13.0, after that upsert provider.Client.find("temp-client") returns the client, and adapter.destroy("temp-client") removes it again. It compiles with @types/oidc-provider 9.12.1 + TS 6.0.3.

(I used Claude Code to check this.)