/**
 * Privacy utilities - Hashing and PII protection
 */
export declare class PrivacyModule {
    private salt;
    constructor(salt?: string);
    /**
     * Hash a value using SHA-256
     */
    hash(value: string): Promise<string>;
    /**
     * SHA-256 fallback - throws error as Web Crypto should always be available
     * Note: This SDK requires Web Crypto API which is available in all modern browsers
     */
    private simpleSHA256;
    /**
     * Generate a unique viewer ID
     */
    generateViewerId(): Promise<string>;
    /**
     * Generate UUID v4
     */
    generateUUID(): string;
    /**
     * Sanitize URL - remove query params and hash
     */
    static sanitizeUrl(url: string): string;
    /**
     * Sanitize event data - remove potential PII
     */
    sanitizeEvent(event: any): any;
}
//# sourceMappingURL=privacy.d.ts.map