/**
 * Validates the Feishu app credentials (appId and appSecret) by calling the tenant_access_token_internal endpoint.
 *
 * @param appId The Feishu App ID
 * @param appSecret The Feishu App Secret
 * @returns Promise<boolean> True if credentials are valid, false otherwise.
 */
export declare function validateAppCredentials(appId: string, appSecret: string): Promise<boolean>;
//# sourceMappingURL=feishu-auth.d.ts.map