/**
 * Helper utilities for the Kalshi JavaScript SDK.
 */
import { OrderParams } from '../types';
/**
 * Validate and normalize a market ticker.
 */
export declare function validateTicker(ticker: string): string;
/**
 * Format a price value for API requests.
 */
export declare function formatPrice(price: number): number;
/**
 * Parse a timestamp string from the API.
 */
export declare function parseTimestamp(timestamp?: string): Date | undefined;
/**
 * Validate and format order parameters.
 */
export declare function validateOrderParams(params: OrderParams): Required<OrderParams>;
/**
 * Generate a unique client order ID.
 */
export declare function generateClientOrderId(): string;
/**
 * Sleep for a specified number of milliseconds.
 */
export declare function sleep(ms: number): Promise<void>;
/**
 * Retry a function with exponential backoff.
 */
export declare function retryWithBackoff<T>(fn: () => Promise<T>, maxRetries?: number, baseDelay?: number): Promise<T>;
/**
 * Convert cents to dollars.
 */
export declare function centsToDollars(cents: number): number;
/**
 * Convert dollars to cents.
 */
export declare function dollarsToCents(dollars: number): number;
/**
 * Format a number as currency.
 */
export declare function formatCurrency(amount: number, currency?: string): string;
/**
 * Calculate percentage change.
 */
export declare function calculatePercentageChange(oldValue: number, newValue: number): number;