/**
 * Confidence scoring for drift detection.
 *
 * Structural changes are always 100% confident since they are deterministic.
 */
import type { ChangeConfidence, ComparisonMethod, BehaviorChange, ToolDiff, DiffConfidence, BehaviorAspect } from './types.js';
/**
 * Structural aspects (deterministic comparison).
 */
export declare const STRUCTURAL_ASPECTS: BehaviorAspect[];
/**
 * Creates a 100% confidence result for structural changes.
 */
export declare function createStructuralConfidence(description: string): ChangeConfidence;
/**
 * Determines the comparison method for a given aspect.
 * (All aspects are structural in this implementation)
 */
export declare function getComparisonMethod(_aspect: BehaviorAspect): ComparisonMethod;
/**
 * Determines if an aspect is structural (deterministic).
 * (All aspects are structural in this implementation)
 */
export declare function isStructuralAspect(_aspect: BehaviorAspect): boolean;
/**
 * Aggregates confidence scores from multiple changes into a single tool confidence.
 */
export declare function aggregateToolConfidence(changes: BehaviorChange[]): ChangeConfidence | undefined;
/**
 * Aggregates confidence information for an entire diff.
 */
export declare function aggregateDiffConfidence(toolDiffs: ToolDiff[], behaviorChanges: BehaviorChange[]): DiffConfidence | undefined;
/**
 * Gets a human-readable confidence label.
 */
export declare function getConfidenceLabel(score: number): 'high' | 'medium' | 'low' | 'very-low';
/**
 * Formats a confidence score for display.
 */
export declare function formatConfidenceScore(confidence: ChangeConfidence | undefined): string;
/**
 * Filters changes by minimum confidence threshold.
 * (All structural changes pass any threshold since they're 100% confident)
 */
export declare function filterByConfidence<T extends {
    confidence?: ChangeConfidence;
}>(changes: T[], _minConfidence: number): T[];
/**
 * Checks if a diff meets the confidence threshold for CI.
 * (Always true for structural comparison)
 */
export declare function meetsConfidenceThreshold(_diff: {
    confidence?: DiffConfidence;
}, _threshold: number): boolean;
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