Function pickDcrAuthMethod

packages/core/sdk/src/oauth-service.ts:1222–1227

(
    advertised: readonly string[] | undefined,
  )

  // `none` (so a confidential secret is mandatory). Static clients never reach
  // here; they require an explicit grant + secret in `createClient`.
  const pickDcrAuthMethod = (
    advertised: readonly string[] | undefined,
  ): "none" | "client_secret_post" =>
    !advertised || advertised.length === 0 || advertised.includes("none")
      ? "none"
      : "client_secret_post";

  type DcrReuseCandidate = {
    readonly slug: OAuthClientSlug;