export interface BuiltinThreat {
    type: string;
    severity: 'critical' | 'high' | 'medium' | 'low';
    description: string;
    confidence: number;
}
export interface DefenceResult {
    safe: boolean;
    threats: BuiltinThreat[];
    piiFound: boolean;
    detectionTimeMs: number;
    inputHash: string;
}
export interface DefenceEngine {
    detect(input: string): Promise<DefenceResult>;
    quickScan(input: string): {
        threat: boolean;
        confidence: number;
        type?: string;
    };
    getStats(): Promise<{
        detectionCount: number;
        avgDetectionTimeMs: number;
        learnedPatterns: number;
        mitigationStrategies: number;
        avgMitigationEffectiveness: number;
    }>;
    getBestMitigation(type: string): Promise<{
        strategy: string;
        effectiveness: number;
    } | null>;
}
export declare function createBuiltinAIDefence(): DefenceEngine;
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