import type { Account } from "@ledgerhq/types-live";
import type { Unit } from "@ledgerhq/types-cryptoassets";
import BigNumber from "bignumber.js";
export type GetEvmTokenAllowanceResult = {
    allowance: BigNumber;
    unit: Unit;
    symbol: string;
    tokenId: string;
    owner: string;
    spender: string;
    contractAddress: string;
};
/**
 * Get the ERC-20 allowance that an owner has granted to a spender for a given token.
 * Only valid for EVM main accounts; token must be on the same chain as the account.
 *
 * @param account - EVM main account (owner address is account.freshAddress)
 * @param tokenId - Token id e.g. ethereum/erc20/usd_tether__erc20_ for USDT
 * @param spender - Spender address (e.g. router or protocol)
 * @returns Allowance in token units and metadata, or throws if token not found / not EVM
 */
export declare function getEvmTokenAllowance(account: Account, tokenId: string, spender: string): Promise<GetEvmTokenAllowanceResult>;
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