/**
 * Per-Rule Quality Metrics -- computes TP, FP, precision, recall,
 * and confidence stats for each individual rule based on eval results.
 *
 * All functions are pure (no side effects, no mutation).
 *
 * @module agent-threat-rules/eval/rule-metrics
 */
import type { SampleResult } from './metrics.js';
export interface RuleQuality {
    readonly ruleId: string;
    readonly matchCount: number;
    readonly tpCount: number;
    readonly fpCount: number;
    readonly categories: readonly string[];
    readonly avgConfidence: number;
}
export interface RuleQualityReport {
    readonly totalRulesEvaluated: number;
    readonly rulesFired: number;
    readonly rulesNeverFired: number;
    readonly topRules: readonly RuleQuality[];
    readonly weakRules: readonly RuleQuality[];
    readonly neverFiredRuleIds: readonly string[];
}
/**
 * Compute per-rule quality metrics from eval results.
 *
 * @param results - The sample results from an eval run
 * @param loadedRuleIds - All rule IDs that were loaded in the engine
 * @returns A RuleQualityReport with top, weak, and never-fired rules
 */
export declare function computeRuleQuality(results: readonly SampleResult[], loadedRuleIds: readonly string[]): RuleQualityReport;
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