import type { OpenCodeStreamEvent } from '../OpenCodeStreamHandler.js';
import type { ToolHealthStats } from '../tool-guard.js';
import type { ToolOutcomeTuple } from './types.js';
export interface ToolOutcomeLedgerResult {
    outcome?: ToolOutcomeTuple;
    anomalyReason?: string;
    duplicate: boolean;
}
export declare class ToolOutcomeLedger {
    private readonly toolCalls;
    observe(event: OpenCodeStreamEvent): ToolOutcomeLedgerResult;
    private observeToolPart;
}
export declare class ToolHealthTracker {
    private totalErrors;
    private totalSuccesses;
    private consecutiveErrors;
    private maxConsecutiveErrors;
    private toolEventsSinceLastProgress;
    private lastTupleKey;
    private currentTupleRepeats;
    private maxTupleRepeats;
    private recoveriesUsed;
    observe(outcome: ToolOutcomeTuple): void;
    noteRecovery(): void;
    stats(): ToolHealthStats;
}
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