/**
 * Price and size formatting per Hyperliquid tick and lot size rules.
 *
 * @module
 */
/// <amd-module name="file:///home/runner/work/hyperliquid/hyperliquid/src/utils/_format.ts" />
import { HyperliquidError } from "../_base.js";
/**
 * Thrown when a price or size value cannot be formatted to a valid decimal.
 *
 * @example
 * ```ts
 * import { formatPrice, FormatError } from "@nktkas/hyperliquid/utils";
 *
 * try {
 *   formatPrice("not a number", 0);
 * } catch (error) {
 *   if (error instanceof FormatError) {
 *     console.error(error.message);
 *   }
 * }
 * ```
 */
export declare class FormatError extends HyperliquidError {
    constructor(message: string, options?: ErrorOptions);
}
/**
 * Format price according to Hyperliquid {@link https://hyperliquid.gitbook.io/hyperliquid-docs/for-developers/api/tick-and-lot-size | rules}:
 * - Maximum 5 significant figures
 * - Maximum 6 (for perp) or 8 (for spot) - `szDecimals` decimal places
 * - Integer prices are always allowed regardless of significant figures
 *
 * @param price The price to format (as string or number).
 * @param szDecimals The size decimals of the asset.
 * @param type The market type: "perp" for perpetuals or "spot" for spot markets. Default: `"perp"`.
 * @return Formatted price string
 *
 * @throws {FormatError} If the price is not a valid finite number, or is truncated to 0.
 *
 * @example
 * ```ts
 * import { formatPrice } from "@nktkas/hyperliquid/utils";
 *
 * formatPrice("97123.456789", 0); // → "97123" (perp, szDecimals=0)
 * formatPrice("1.23456789", 5); // → "1.2" (perp, szDecimals=5)
 * formatPrice("0.0000123456789", 0, "spot"); // → "0.00001234" (spot, 8-decimal ceiling)
 * ```
 */
export declare function formatPrice(price: string | number, szDecimals: number, type?: "perp" | "spot"): string;
/**
 * Format size according to Hyperliquid {@link https://hyperliquid.gitbook.io/hyperliquid-docs/for-developers/api/tick-and-lot-size | rules}:
 * - Truncate decimal places to `szDecimals`
 *
 * @param size The size to format (as string or number).
 * @param szDecimals The size decimals of the asset.
 * @return Formatted size string
 *
 * @throws {FormatError} If the size is not a valid finite number, or is truncated to 0.
 *
 * @example
 * ```ts
 * import { formatSize } from "@nktkas/hyperliquid/utils";
 *
 * formatSize("1.23456789", 5); // → "1.23456"
 * formatSize("0.123456789", 2); // → "0.12"
 * formatSize("100", 0); // → "100"
 * ```
 */
export declare function formatSize(size: string | number, szDecimals: number): string;