import { ChainConfig, ForeignToken } from "@daimo/contract";
import { Hex } from "viem";
import { Locale } from "./i18n";
import { MoneyEntry } from "./moneyEntry";
import { TransferClog } from "./op";
/** Viem hexToBytes, wrapped in a Buffer instead of Uint8Array */
export declare function hexToBuffer(hex: Hex): Buffer;
export declare function formatFeeAmountOrNull(locale: Locale, dollars: number): string | null;
/** Formats an amount for a non-USD token, eg "123.000000" */
export declare function getForeignCoinDisplayAmount(amount: `${bigint}` | bigint, coin: ForeignToken): string;
/**
 * Creates a complete memo, eg:
 * Send to non-stablecoin: "USDC → 0.0017 ETH"
 * Send cross-chain: "USDC Poly"
 * Non-USD amount entry + memo + cross-chain: "ARS234 · Test 234 · USDC Poly"
 */
export declare function getFullMemo({ memo, money, }: {
    /** User-entered memo, if any. */
    memo?: string;
    /** User-entered amount. */
    money: MoneyEntry;
}): string;
export declare function getTransferSummary(op: TransferClog, chainConfig: ChainConfig, locale?: Locale, short?: boolean): string | undefined;
export declare function capitalize(str: string): string;