/**
 * Retries `fn` with exponential backoff while the thrown error is
 * classified as `"retry"`. Rethrows the last error once attempts are
 * exhausted or the error is classified as something other than
 * transient.
 */
export declare function runModelCallWithRetries<T>(fn: (attempt: number) => Promise<T>, diag: {
    readonly sessionId: string;
    readonly turnId: string;
    readonly canRetry?: () => boolean;
}, signal?: AbortSignal): Promise<T>;