/**
 * Replace placeholders in SQL statements
 * Placeholders:
 * - {{username}} - The generated username
 * - {{password}} - The generated password
 * - {{expiration}} - Expiration timestamp (ISO format)
 * - {{expiration_timestamp}} - Expiration as UNIX timestamp
 */
export declare function replaceStatementPlaceholders(statement: string, username: string, password: string, expiresAt: string): string;
/**
 * Generate a username from template
 * Templates:
 * - {{role}} - Role name (sanitized)
 * - {{random:N}} - N random alphanumeric characters
 * - {{timestamp}} - UNIX timestamp
 * - {{uuid}} - UUID (first 8 chars)
 */
export declare function generateUsername(template: string, roleName: string): string;
/**
 * Generate a secure random password
 * 32 bytes = 256 bits of entropy, base64 encoded = 44 characters
 */
export declare function generatePassword(): string;
/**
 * Parse connection string to extract components
 */
export declare function parseConnectionString(connectionString: string): {
    protocol: string;
    username?: string;
    password?: string;
    host: string;
    port?: number;
    database?: string;
    params?: Record<string, string>;
};
//# sourceMappingURL=utils.d.ts.map