import type { ChildProcess } from 'node:child_process';
import type { SupportedRuntime } from './workflow-executor.js';
export type LifecycleState = 'spawned' | 'active' | 'idle' | 'completed' | 'failed' | 'timed-out';
export type LifecycleEvent = {
    state: LifecycleState;
    timestamp: number;
    elapsedMs: number;
    exitCode?: number;
    detail?: string;
};
export type LifecycleWatcherCallbacks = {
    onStateChange?: (event: LifecycleEvent) => void;
    onOutput?: (chunk: string) => void;
};
export type LifecycleWatcher = {
    readonly runtime: SupportedRuntime;
    start(child: ChildProcess, callbacks: LifecycleWatcherCallbacks): void;
    getState(): LifecycleState;
    getElapsedMs(): number;
    dispose(): void;
};
export declare class ClaudeLifecycleWatcher implements LifecycleWatcher {
    private static readonly IDLE_THRESHOLD_MS;
    readonly runtime: SupportedRuntime;
    private core;
    private idleTimer;
    private lastOutputMs;
    start(child: ChildProcess, callbacks: LifecycleWatcherCallbacks): void;
    getState(): LifecycleState;
    getElapsedMs(): number;
    dispose(): void;
    private scheduleIdleCheck;
    private clearIdleTimer;
}
export declare class CodexLifecycleWatcher implements LifecycleWatcher {
    readonly runtime: SupportedRuntime;
    private core;
    start(child: ChildProcess, callbacks: LifecycleWatcherCallbacks): void;
    getState(): LifecycleState;
    getElapsedMs(): number;
    dispose(): void;
}
export declare function createLifecycleWatcher(runtime: SupportedRuntime): LifecycleWatcher;