Function selectClientAuthMethod

selectClientAuthMethod(
clientInformation: OAuthClientInformationMixed,
supportedMethods: string[],
): ClientAuthMethod
Determines the best client authentication method to use based on server support and client configuration.

Priority order (highest to lowest):
1. client_secret_basic (if client secret is available)
2. client_secret_post (if client secret is available)
3. none (for public clients)
Parameters
- clientInformation: OAuthClientInformationMixed
  OAuth client information containing credentials
- supportedMethods: string[]
  Authentication methods supported by the authorization server
Returns ClientAuthMethod
The selected authentication method
- Defined in src/client/auth.ts:172