import type { AgentType } from "../domain/runner.js";
import { MaxStepsExceededError } from "../limits/max-steps.js";
export interface ExecResult {
    stdout: string;
    stderr: string;
    exitCode: number | null;
    signal: NodeJS.Signals | null;
    timedOut: boolean;
    terminatedByMonitor?: MaxStepsExceededError;
}
export declare class CommandTimeoutError extends Error {
    constructor(command: string, args: string[], timeoutMs: number);
}
export declare function isCommandTimeoutError(error: unknown): error is CommandTimeoutError;
export declare function isMaxStepsExceededError(error: unknown): error is MaxStepsExceededError;
export declare function execFileCapture(command: string, args: string[], options: {
    cwd: string;
    timeoutMs: number;
    env?: NodeJS.ProcessEnv;
    mirror?: {
        stdout?: {
            write(chunk: string): unknown;
        };
        stderr?: {
            write(chunk: string): unknown;
        };
    };
    maxSteps?: {
        limit: number;
        agentType: AgentType;
        runnerId: string;
    };
}): Promise<ExecResult>;