/**
 * Structural comparison for drift detection.
 *
 * Compares baselines using deterministic structural comparison:
 * - Tool presence/absence
 * - Schema changes (hash comparison)
 * - Description changes (exact string comparison)
 * - Workflow success/failure changes
 *
 * All comparisons are 100% deterministic - no LLM involvement.
 */
import type { InterviewResult } from '../interview/types.js';
import type { BehavioralBaseline, BehavioralDiff, BehaviorChange, BehaviorAspect, CompareOptions, ChangeSeverity, VersionCompatibilityInfo, SeverityConfig } from './types.js';
/**
 * Compare current interview results against a baseline.
 */
export declare function compareWithBaseline(baseline: BehavioralBaseline, current: InterviewResult, serverCommand: string, options?: CompareOptions): BehavioralDiff;
/**
 * Compare two baselines directly.
 * All changes are structural and deterministic.
 *
 * @param previous - The baseline to compare against (source/old)
 * @param current - The current baseline (target/new)
 * @param options - Comparison options
 * @returns Diff result including version compatibility information
 * @throws BaselineVersionError if versions are incompatible and ignoreVersionMismatch is false
 */
export declare function compareBaselines(previous: BehavioralBaseline, current: BehavioralBaseline, options?: CompareOptions): BehavioralDiff;
export declare function hasBreakingChanges(diff: BehavioralDiff): boolean;
export declare function hasSecurityChanges(diff: BehavioralDiff): boolean;
export declare function filterByMinimumSeverity(diff: BehavioralDiff, minSeverity: ChangeSeverity): BehaviorChange[];
/**
 * Compare two severity levels.
 * Returns negative if a < b, positive if a > b, 0 if equal.
 */
export declare function compareSeverity(a: ChangeSeverity, b: ChangeSeverity): number;
/**
 * Check if a severity meets or exceeds a threshold.
 */
export declare function severityMeetsThreshold(severity: ChangeSeverity, threshold: ChangeSeverity): boolean;
/**
 * Apply aspect overrides to a behavior change.
 * Returns the modified severity based on aspect overrides.
 */
export declare function applyAspectOverride(change: BehaviorChange, aspectOverrides?: Partial<Record<BehaviorAspect, ChangeSeverity>>): ChangeSeverity;
/**
 * Apply severity configuration to a diff result.
 * Returns a new diff with filtered/modified changes based on config.
 */
export declare function applySeverityConfig(diff: BehavioralDiff, config: SeverityConfig): BehavioralDiff;
/**
 * Determine the appropriate exit code based on diff severity and config.
 * Returns true if the check should fail (non-zero exit).
 */
export declare function shouldFailOnDiff(diff: BehavioralDiff, failOnSeverity?: ChangeSeverity): boolean;
/**
 * Check if two baselines have compatible versions for comparison.
 *
 * @param baseline1 - First baseline
 * @param baseline2 - Second baseline
 * @returns Version compatibility information
 */
export declare function checkBaselineVersionCompatibility(baseline1: BehavioralBaseline, baseline2: BehavioralBaseline): VersionCompatibilityInfo;
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