tornado-core/dist/fees.d.ts

46 lines
2.0 KiB
TypeScript
Raw Normal View History

2024-04-29 18:55:15 +03:00
import type { BigNumberish, TransactionLike } from 'ethers';
import { OvmGasPriceOracle } from './typechain';
/**
* Example:
*
* amountInWei (0.1 ETH) * tokenDecimals (18) * tokenPriceInWei (0.0008) = 125 TOKEN
*/
export declare function convertETHToTokenAmount(amountInWei: BigNumberish, tokenPriceInWei: BigNumberish, tokenDecimals?: number): bigint;
export interface RelayerFeeParams {
gasPrice: BigNumberish;
gasLimit?: BigNumberish;
l1Fee?: BigNumberish;
denomination: BigNumberish;
ethRefund: BigNumberish;
tokenPriceInWei: BigNumberish;
tokenDecimals: number;
relayerFeePercent?: number;
isEth?: boolean;
premiumPercent?: number;
}
export declare class TornadoFeeOracle {
ovmGasPriceOracle?: OvmGasPriceOracle;
constructor(ovmGasPriceOracle?: OvmGasPriceOracle);
/**
* Calculate L1 fee for op-stack chains
*
* This is required since relayers would pay the full transaction fees for users
*/
fetchL1OptimismFee(tx?: TransactionLike): Promise<bigint>;
/**
* We don't need to distinguish default refunds by tokens since most users interact with other defi protocols after withdrawal
* So we default with 1M gas which is enough for two or three swaps
* Using 30 gwei for default but it is recommended to supply cached gasPrice value from the UI
*/
defaultEthRefund(gasPrice?: BigNumberish, gasLimit?: BigNumberish): bigint;
/**
* Calculates token amount for required ethRefund purchases required to calculate fees
*/
calculateTokenAmount(ethRefund: BigNumberish, tokenPriceInEth: BigNumberish, tokenDecimals?: number): bigint;
/**
* Warning: For tokens you need to check if the fees are above denomination
* (Usually happens for small denomination pool or if the gas price is high)
*/
calculateRelayerFee({ gasPrice, gasLimit, l1Fee, denomination, ethRefund, tokenPriceInWei, tokenDecimals, relayerFeePercent, isEth, premiumPercent, }: RelayerFeeParams): bigint;
}