import type { TimeoutExtender } from '../timeout.js';
import type { OutputEvent } from '../types/session-types.js';
export declare const SUBAGENT_MAX_PAUSE_EXTENSION_MS: number;
export interface PauseExtensionGrantInfo {
    grantMs: number;
    totalGrantedMs: number;
    remainingCapMs: number;
    grantCount: number;
    pauseDescription: string | undefined;
}
export declare class PauseAwareCeiling implements TimeoutExtender {
    private readonly baseTimeoutMs;
    private readonly maxExtensionMs;
    private pauseStartedAtMs;
    private pauseWindowCapMs;
    private closedCreditMs;
    private lastPauseDescription;
    private grantedMs;
    private grantCount;
    private readonly onGrant?;
    constructor(baseTimeoutMs: number, maxExtensionMs?: number, onGrant?: (info: PauseExtensionGrantInfo) => void);
    onEvent(event: OutputEvent): void;
    private openPauseCreditMs;
    private closePause;
    private closeExpiredPause;
    onDeadline(): number;
    describe(): string | undefined;
    get totalGrantedMs(): number;
}