export interface PromptGuardConfig {
    sensitiveFields?: string[];
    customPatterns?: RegExp[];
    strictMode?: boolean;
    onViolation?: (violation: SecurityViolation) => void;
}
export interface SecurityViolation {
    type: "injection" | "sensitive_access" | "blocked_pattern";
    input: string;
    pattern?: string;
    field?: string;
    timestamp: number;
}
export declare class PromptGuard {
    private config;
    private violations;
    private patterns;
    constructor(config?: PromptGuardConfig);
    validateIntent(intent: string): {
        safe: boolean;
        violation?: SecurityViolation;
    };
    validateStateChange<T extends object>(oldState: T, newState: T): {
        safe: boolean;
        violation?: SecurityViolation;
    };
    sanitizeState<T extends object>(oldState: T, newState: T): T;
    getViolations(): SecurityViolation[];
    clearViolations(): void;
    addSensitiveFields(fields: string[]): void;
    private record;
    private getNestedValue;
    private setNestedValue;
}
export declare function createPromptGuard(config?: PromptGuardConfig): PromptGuard;
export declare function quickSafetyCheck(input: string): boolean;
export declare function sanitizeHtml(input: string): string;
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