/**
 * Fee utility for resolving fee presets to micro-STX values.
 *
 * Supports both numeric strings (e.g., "100000") and preset strings
 * ("low", "medium", "high") that are resolved by fetching current
 * fee estimates from the Stacks mempool.
 */
import type { Network } from "../config/networks.js";
/**
 * Valid fee preset strings.
 * These map to the mempool fee priorities:
 * - "low" -> low_priority
 * - "medium" -> medium_priority
 * - "high" -> high_priority
 */
export type FeePreset = "low" | "medium" | "high";
/**
 * Check if a string is a valid fee preset.
 */
export declare function isFeePreset(value: string): value is FeePreset;
/**
 * Resolve a fee string to a bigint value in micro-STX.
 *
 * @param fee - Either a numeric string (micro-STX) or preset ("low" | "medium" | "high")
 * @param network - The network to fetch fee estimates from
 * @param txType - The transaction type for more accurate fee estimates.
 *                 Defaults to "all" which uses aggregate fees.
 * @returns The fee in micro-STX as bigint, or undefined if fee is undefined
 *
 * @example
 * // Numeric string - returns as-is
 * await resolveFee("100000", "mainnet") // -> 100000n
 *
 * // Preset string - fetches from mempool
 * await resolveFee("high", "mainnet") // -> fetches high_priority fee
 *
 * // Undefined - returns undefined (auto-estimate)
 * await resolveFee(undefined, "mainnet") // -> undefined
 */
export declare function resolveFee(fee: string | undefined, network: Network, txType?: "all" | "token_transfer" | "contract_call" | "smart_contract"): Promise<bigint | undefined>;
/**
 * Resolve a default medium-priority fee for a given transaction type.
 *
 * Used by builder functions when the caller does not supply an explicit fee,
 * so that ALL write paths receive a clamped fee rather than relying on the
 * unclamped @stacks/transactions auto-estimation which can over-shoot.
 *
 * Falls back gracefully: if the Hiro mempool API is unreachable, returns the
 * floor × 2 (medium multiplier) for the tx type.
 *
 * @param network - The Stacks network to fetch fee estimates from
 * @param txType - The transaction type for ceiling/floor selection
 * @returns Fee in micro-STX as bigint
 */
export declare function resolveDefaultFee(network: Network, txType?: "token_transfer" | "contract_call" | "smart_contract"): Promise<bigint>;
//# sourceMappingURL=fee.d.ts.map