/**
 * Budget guard: enforces turn count and cost limits during the agentic loop.
 *
 * Monitors turn_end events for turn counting and cost accumulation.
 * On breach, calls the provided abort function to stop the loop.
 * Defaults to Infinity for both limits (no enforcement unless configured).
 *
 * Counters reset on agent_start (beginning of each agentic loop).
 *
 * Reference: cortex-architecture.md (Budget Guards section)
 */
import type { BudgetGuardConfig, CortexLogger } from './types.js';
import type { EventBridge } from './event-bridge.js';
export declare class BudgetGuard {
    private readonly maxTurns;
    private readonly maxCost;
    private readonly abortFn;
    private readonly logger;
    private turnCount;
    private totalCost;
    private breached;
    private unsubscribers;
    /**
     * Create a BudgetGuard.
     *
     * @param config - Budget limits (maxTurns, maxCost). Both default to Infinity.
     * @param abortFn - Function to call when a limit is breached (typically agent.abort())
     * @param logger - Optional logger for diagnostics (defaults to silent no-op)
     */
    constructor(config: Partial<BudgetGuardConfig>, abortFn: () => void, logger?: CortexLogger);
    /**
     * Wire the guard to an event bridge.
     * Subscribes to turn_end (for turn counting and cost) and loop_start (for reset).
     *
     * @param bridge - The EventBridge to subscribe to
     */
    wire(bridge: EventBridge): void;
    /**
     * Disconnect from the event bridge.
     */
    unwire(): void;
    /**
     * Get the current turn count.
     */
    getTurnCount(): number;
    /**
     * Get the accumulated cost.
     */
    getTotalCost(): number;
    /**
     * Get the maximum turn limit.
     */
    getMaxTurns(): number;
    /**
     * Get the maximum cost limit.
     */
    getMaxCost(): number;
    /**
     * Whether any limit has been breached.
     */
    isBreached(): boolean;
    /**
     * Reset counters. Called automatically on loop_start.
     */
    reset(): void;
    /**
     * Clean up all subscriptions.
     */
    destroy(): void;
    /**
     * Check if any limits have been exceeded and abort if so.
     */
    private checkLimits;
}
//# sourceMappingURL=budget-guard.d.ts.map