import type { Address, DexExchangeBuildParam } from '../types';
import type { ExecutorEncodingContext } from './encoding-types';
export type ApprovalTokenAndTarget = {
    target: string;
    token: Address;
};
export declare function getApprovalTokenAndTarget(swap: {
    srcToken: Address;
}, exchangeParam: DexExchangeBuildParam, context: Pick<ExecutorEncodingContext, 'wrappedNativeTokenAddress'>): ApprovalTokenAndTarget | null;