import type { AcpEvent } from "./acp/types.js";
export type SpawnRetryOptions<TResult extends {
    exitCode: number;
}> = {
    maxAttempts: number;
    backoffMs: number;
    isRetryable?: (result: TResult) => boolean;
};
export type SpawnHandle<TResult> = {
    events: AsyncIterable<AcpEvent>;
    result: Promise<TResult>;
};
export type SpawnRetryFunction<TOptions extends {
    signal?: AbortSignal;
}, TResult extends {
    exitCode: number;
}> = (service: string, options: TOptions, retryOptions: SpawnRetryOptions<TResult>) => SpawnHandle<TResult>;
export declare function createSpawnRetry<TOptions extends {
    signal?: AbortSignal;
}, TResult extends {
    exitCode: number;
}>(spawnOnce: (service: string, options: TOptions) => SpawnHandle<TResult>): SpawnRetryFunction<TOptions, TResult>;
export declare function defaultIsRetryable(result: {
    exitCode: number;
}): boolean;
export declare function calculateBackoffMs(baseBackoffMs: number, completedAttempt: number): number;