/**
 * CodexProcessRunner — owns the lifecycle of one codex child process.
 *
 * Responsibilities:
 * - Spawn the codex process
 * - Line-buffer stdout for JSONL parsing
 * - Filter stderr noise
 * - Emit normalized events via callbacks
 * - Deterministic cleanup: SIGTERM → grace → SIGKILL → remove listeners
 *
 * Single-use: one runner per task, created once, not reused.
 */
import { type ProcessState, type SpawnOptions, type ProcessCallbacks, type ProcessExitInfo, type ProcessHandle } from './types.js';
export declare class CodexProcessRunner {
    private child;
    private _state;
    private stdoutBuffer;
    private readonly killGraceMs;
    private readonly callbacks;
    private exitPromise;
    private exitResolve;
    private wasKilledByUs;
    constructor(callbacks: ProcessCallbacks, killGraceMs?: number);
    get state(): ProcessState;
    /**
     * Spawn the codex process. Returns a ProcessHandle for PID access
     * and kill control.
     */
    spawn(options: SpawnOptions): ProcessHandle;
    /**
     * Kill the process deterministically.
     * SIGTERM → wait grace period → SIGKILL → wait for exit.
     */
    kill(): Promise<void>;
    /**
     * Wait for the process to exit naturally.
     */
    waitForExit(): Promise<ProcessExitInfo>;
    private onStdout;
    private onStderr;
    private onClose;
    private onError;
    /**
     * Remove all listeners from the child process.
     */
    private removeListeners;
}
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