import { Currency, CurrencyAmount, Percent, Token, TradeType } from "@stratospherex/sdk";
import { SmartRouterTrade } from "@stratospherex/smart-router";
import { PublicClient } from "viem";
import { EstimatedSwap } from "../types";
import { SupportedChain, Tx } from "../types/chains";
export declare class SwapService {
    private viemClient;
    private chain;
    constructor(chain: SupportedChain, viemClient: PublicClient);
    private getBestTrade;
    estimateSwap(tokenIn: string, tokenOut: string, amount: string): Promise<EstimatedSwap>;
    checkApproval(tokenAddress: string, walletAddress: string): Promise<boolean>;
    approve(tokenAddress: string, amount: string): Promise<any>;
    swap(tokenIn: string, tokenOut: string, amount: string, address: string): Promise<Tx>;
    getToken(address: string): Promise<Token>;
    computeTradePriceBreakdown(trade?: SmartRouterTrade<TradeType> | null): {
        priceImpactWithoutFee?: Percent | null;
        lpFeeAmount?: CurrencyAmount<Currency> | null;
    };
    private v3FeeToPercent;
}
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