/**
 * Resolved authentication configuration for Qwen API calls.
 *
 * `source` indicates which credential source won the priority resolution:
 * - `oauth`: Qwen Code OAuth token from ~/.qwen/oauth_creds.json
 * - `env`: API key from DASHSCOPE_API_KEY or QWEN_API_KEY
 */
export interface AuthConfig {
    apiKey: string;
    baseUrl: string;
    model: string;
    source: 'oauth' | 'env';
}
/**
 * Resolves authentication using strict source priority:
 * 1) Qwen Code OAuth token from ~/.qwen/oauth_creds.json
 * 2) Environment API key (DASHSCOPE_API_KEY or QWEN_API_KEY)
 *
 * OAuth token is used only when `access_token` is a non-empty string and
 * `expires_at` (unix seconds) is in the future.
 *
 * Throws when no valid authentication source can be resolved.
 */
export declare function resolveAuth(): AuthConfig;