/**
 * Generate X-Client-Transaction-Id header
 *
 * This mimics the transaction ID format used by X's web client
 * to help avoid bot detection.
 */
/**
 * Generate a transaction ID that matches X's expected format
 * Format appears to be: base64(timestamp + random + checksum)
 */
export declare function generateTransactionId(): string;
/**
 * Generate UI metrics for login flows (from twikit research)
 * This is used during authentication to appear more human-like
 */
export declare function generateUiMetrics(): Record<string, unknown>;
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