Add built files for test

* Updated 1inch Oracle link and use multicall3 ( because this is the only contract supported on sepolia )
* Simplify EIP-1559 gasPrice calculation ( EIP-1559 removes necessity of using external oracles, just enough premium of basefee will ensure transaction being mined )
* Apply respective premium for fees ( Only applied on V6 Oracle class )
* Removed @tornado/gas-price-oracle oracle

.gitignore

@@ -14,7 +14,7 @@ pids
 *.pid.lock
 
 # Directory for instrumented libs generated by jscoverage/JSCover
-lib
+#lib
 lib-cov
 
 # Coverage directory used by tools like istanbul

lib/config.d.ts

@@ -0,0 +1,36 @@
+import { LegacyGasPrices } from './types';
+export declare enum ChainId {
+    MAINNET = 1,
+    GOERLI = 5,
+    BSC = 56,
+    XDAI = 100,
+    POLYGON = 137,
+    OPTIMISM = 10,
+    ARBITRUM = 42161,
+    AVAX = 43114,
+    SEPOLIA = 11155111
+}
+export declare enum InstanceTokenSymbol {
+    DAI = "dai",
+    cDAI = "cdai",
+    WBTC = "wbtc",
+    USDT = "usdt",
+    USDC = "usdc"
+}
+export type GasPricesConfig = {
+    [chainId in ChainId]: LegacyGasPrices;
+};
+export declare const defaultGasPrices: GasPricesConfig;
+type GasLimitConfig = {
+    [chainId in ChainId]: number;
+};
+export declare const defaultWithdrawalGasLimit: GasLimitConfig;
+type InstanceTokenGasLimitConfig = {
+    [tokenSymbol in InstanceTokenSymbol]: number;
+};
+export declare const defaultInstanceTokensGasLimit: InstanceTokenGasLimitConfig;
+export declare const optimismL1FeeOracleAddress = "0x420000000000000000000000000000000000000F";
+export declare const offchainOracleAddress = "0x00000000000D6FFc74A8feb35aF5827bf57f6786";
+export declare const sepoliaOffchainOracleAddress = "0x1f89EAF03E5b260Bc6D4Ae3c3334b1B750F3e127";
+export declare const multiCallAddress = "0xcA11bde05977b3631167028862bE2a173976CA11";
+export {};

lib/config.js

@@ -0,0 +1,103 @@
+"use strict";
+var _a, _b, _c;
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.multiCallAddress = exports.sepoliaOffchainOracleAddress = exports.offchainOracleAddress = exports.optimismL1FeeOracleAddress = exports.defaultInstanceTokensGasLimit = exports.defaultWithdrawalGasLimit = exports.defaultGasPrices = exports.InstanceTokenSymbol = exports.ChainId = void 0;
+var ChainId;
+(function (ChainId) {
+    ChainId[ChainId["MAINNET"] = 1] = "MAINNET";
+    ChainId[ChainId["GOERLI"] = 5] = "GOERLI";
+    ChainId[ChainId["BSC"] = 56] = "BSC";
+    ChainId[ChainId["XDAI"] = 100] = "XDAI";
+    ChainId[ChainId["POLYGON"] = 137] = "POLYGON";
+    ChainId[ChainId["OPTIMISM"] = 10] = "OPTIMISM";
+    ChainId[ChainId["ARBITRUM"] = 42161] = "ARBITRUM";
+    ChainId[ChainId["AVAX"] = 43114] = "AVAX";
+    ChainId[ChainId["SEPOLIA"] = 11155111] = "SEPOLIA";
+})(ChainId || (exports.ChainId = ChainId = {}));
+var InstanceTokenSymbol;
+(function (InstanceTokenSymbol) {
+    InstanceTokenSymbol["DAI"] = "dai";
+    InstanceTokenSymbol["cDAI"] = "cdai";
+    InstanceTokenSymbol["WBTC"] = "wbtc";
+    InstanceTokenSymbol["USDT"] = "usdt";
+    InstanceTokenSymbol["USDC"] = "usdc";
+})(InstanceTokenSymbol || (exports.InstanceTokenSymbol = InstanceTokenSymbol = {}));
+exports.defaultGasPrices = (_a = {},
+    _a[ChainId.MAINNET] = {
+        instant: 80,
+        fast: 50,
+        standard: 25,
+        low: 8,
+    },
+    _a[ChainId.GOERLI] = {
+        instant: 80,
+        fast: 50,
+        standard: 25,
+        low: 8,
+    },
+    _a[ChainId.OPTIMISM] = {
+        instant: 0.001,
+        fast: 0.001,
+        standard: 0.001,
+        low: 0.001,
+    },
+    _a[ChainId.XDAI] = {
+        instant: 6,
+        fast: 5,
+        standard: 4,
+        low: 1,
+    },
+    _a[ChainId.BSC] = {
+        instant: 5,
+        fast: 4,
+        standard: 3,
+        low: 3,
+    },
+    _a[ChainId.POLYGON] = {
+        instant: 100,
+        fast: 75,
+        standard: 50,
+        low: 30,
+    },
+    _a[ChainId.ARBITRUM] = {
+        instant: 4,
+        fast: 3,
+        standard: 2.52,
+        low: 2.29,
+    },
+    _a[ChainId.AVAX] = {
+        instant: 225,
+        fast: 35,
+        standard: 25,
+        low: 25,
+    },
+    _a[ChainId.SEPOLIA] = {
+        instant: 80,
+        fast: 50,
+        standard: 25,
+        low: 8,
+    },
+    _a);
+exports.defaultWithdrawalGasLimit = (_b = {},
+    _b[ChainId.MAINNET] = 550000,
+    _b[ChainId.GOERLI] = 550000,
+    _b[ChainId.ARBITRUM] = 1900000,
+    _b[ChainId.OPTIMISM] = 440000,
+    _b[ChainId.AVAX] = 390000,
+    _b[ChainId.BSC] = 390000,
+    _b[ChainId.POLYGON] = 390000,
+    _b[ChainId.XDAI] = 390000,
+    _b[ChainId.SEPOLIA] = 550000,
+    _b);
+exports.defaultInstanceTokensGasLimit = (_c = {},
+    _c[InstanceTokenSymbol.DAI] = 55000,
+    _c[InstanceTokenSymbol.cDAI] = 425000,
+    _c[InstanceTokenSymbol.WBTC] = 85000,
+    _c[InstanceTokenSymbol.USDT] = 100000,
+    _c[InstanceTokenSymbol.USDC] = 80000,
+    _c);
+exports.optimismL1FeeOracleAddress = '0x420000000000000000000000000000000000000F';
+exports.offchainOracleAddress = '0x00000000000D6FFc74A8feb35aF5827bf57f6786';
+exports.sepoliaOffchainOracleAddress = '0x1f89EAF03E5b260Bc6D4Ae3c3334b1B750F3e127';
+exports.multiCallAddress = '0xcA11bde05977b3631167028862bE2a173976CA11';
+//# sourceMappingURL=config.js.map

lib/config.js.map

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lib/contracts/MulticallAbi.d.ts

@@ -0,0 +1,289 @@
+import type { BaseContract, BigNumber, BigNumberish, BytesLike, CallOverrides, ContractTransaction, PayableOverrides, PopulatedTransaction, Signer, utils } from 'ethers';
+import type { FunctionFragment, Result } from '@ethersproject/abi';
+import type { Listener, Provider } from '@ethersproject/providers';
+import type { TypedEventFilter, TypedEvent, TypedListener, OnEvent } from './common';
+export declare namespace Multicall3 {
+    type CallStruct = {
+        target: string;
+        callData: BytesLike;
+    };
+    type CallStructOutput = [string, string] & {
+        target: string;
+        callData: string;
+    };
+    type Call3Struct = {
+        target: string;
+        allowFailure: boolean;
+        callData: BytesLike;
+    };
+    type Call3StructOutput = [string, boolean, string] & {
+        target: string;
+        allowFailure: boolean;
+        callData: string;
+    };
+    type ResultStruct = {
+        success: boolean;
+        returnData: BytesLike;
+    };
+    type ResultStructOutput = [boolean, string] & {
+        success: boolean;
+        returnData: string;
+    };
+    type Call3ValueStruct = {
+        target: string;
+        allowFailure: boolean;
+        value: BigNumberish;
+        callData: BytesLike;
+    };
+    type Call3ValueStructOutput = [string, boolean, BigNumber, string] & {
+        target: string;
+        allowFailure: boolean;
+        value: BigNumber;
+        callData: string;
+    };
+}
+export interface MulticallAbiInterface extends utils.Interface {
+    functions: {
+        'aggregate((address,bytes)[])': FunctionFragment;
+        'aggregate3((address,bool,bytes)[])': FunctionFragment;
+        'aggregate3Value((address,bool,uint256,bytes)[])': FunctionFragment;
+        'blockAndAggregate((address,bytes)[])': FunctionFragment;
+        'getBasefee()': FunctionFragment;
+        'getBlockHash(uint256)': FunctionFragment;
+        'getBlockNumber()': FunctionFragment;
+        'getChainId()': FunctionFragment;
+        'getCurrentBlockCoinbase()': FunctionFragment;
+        'getCurrentBlockDifficulty()': FunctionFragment;
+        'getCurrentBlockGasLimit()': FunctionFragment;
+        'getCurrentBlockTimestamp()': FunctionFragment;
+        'getEthBalance(address)': FunctionFragment;
+        'getLastBlockHash()': FunctionFragment;
+        'tryAggregate(bool,(address,bytes)[])': FunctionFragment;
+        'tryBlockAndAggregate(bool,(address,bytes)[])': FunctionFragment;
+    };
+    getFunction(nameOrSignatureOrTopic: 'aggregate' | 'aggregate3' | 'aggregate3Value' | 'blockAndAggregate' | 'getBasefee' | 'getBlockHash' | 'getBlockNumber' | 'getChainId' | 'getCurrentBlockCoinbase' | 'getCurrentBlockDifficulty' | 'getCurrentBlockGasLimit' | 'getCurrentBlockTimestamp' | 'getEthBalance' | 'getLastBlockHash' | 'tryAggregate' | 'tryBlockAndAggregate'): FunctionFragment;
+    encodeFunctionData(functionFragment: 'aggregate', values: [Multicall3.CallStruct[]]): string;
+    encodeFunctionData(functionFragment: 'aggregate3', values: [Multicall3.Call3Struct[]]): string;
+    encodeFunctionData(functionFragment: 'aggregate3Value', values: [Multicall3.Call3ValueStruct[]]): string;
+    encodeFunctionData(functionFragment: 'blockAndAggregate', values: [Multicall3.CallStruct[]]): string;
+    encodeFunctionData(functionFragment: 'getBasefee', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'getBlockHash', values: [BigNumberish]): string;
+    encodeFunctionData(functionFragment: 'getBlockNumber', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'getChainId', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'getCurrentBlockCoinbase', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'getCurrentBlockDifficulty', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'getCurrentBlockGasLimit', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'getCurrentBlockTimestamp', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'getEthBalance', values: [string]): string;
+    encodeFunctionData(functionFragment: 'getLastBlockHash', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'tryAggregate', values: [boolean, Multicall3.CallStruct[]]): string;
+    encodeFunctionData(functionFragment: 'tryBlockAndAggregate', values: [boolean, Multicall3.CallStruct[]]): string;
+    decodeFunctionResult(functionFragment: 'aggregate', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'aggregate3', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'aggregate3Value', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'blockAndAggregate', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getBasefee', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getBlockHash', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getBlockNumber', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getChainId', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getCurrentBlockCoinbase', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getCurrentBlockDifficulty', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getCurrentBlockGasLimit', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getCurrentBlockTimestamp', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getEthBalance', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getLastBlockHash', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'tryAggregate', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'tryBlockAndAggregate', data: BytesLike): Result;
+    events: {};
+}
+export interface MulticallAbi extends BaseContract {
+    connect(signerOrProvider: Signer | Provider | string): this;
+    attach(addressOrName: string): this;
+    deployed(): Promise<this>;
+    interface: MulticallAbiInterface;
+    queryFilter<TEvent extends TypedEvent>(event: TypedEventFilter<TEvent>, fromBlockOrBlockhash?: string | number | undefined, toBlock?: string | number | undefined): Promise<Array<TEvent>>;
+    listeners<TEvent extends TypedEvent>(eventFilter?: TypedEventFilter<TEvent>): Array<TypedListener<TEvent>>;
+    listeners(eventName?: string): Array<Listener>;
+    removeAllListeners<TEvent extends TypedEvent>(eventFilter: TypedEventFilter<TEvent>): this;
+    removeAllListeners(eventName?: string): this;
+    off: OnEvent<this>;
+    on: OnEvent<this>;
+    once: OnEvent<this>;
+    removeListener: OnEvent<this>;
+    functions: {
+        aggregate(calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        aggregate3(calls: Multicall3.Call3Struct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        aggregate3Value(calls: Multicall3.Call3ValueStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        blockAndAggregate(calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        getBasefee(overrides?: CallOverrides): Promise<[BigNumber] & {
+            basefee: BigNumber;
+        }>;
+        getBlockHash(blockNumber: BigNumberish, overrides?: CallOverrides): Promise<[string] & {
+            blockHash: string;
+        }>;
+        getBlockNumber(overrides?: CallOverrides): Promise<[BigNumber] & {
+            blockNumber: BigNumber;
+        }>;
+        getChainId(overrides?: CallOverrides): Promise<[BigNumber] & {
+            chainid: BigNumber;
+        }>;
+        getCurrentBlockCoinbase(overrides?: CallOverrides): Promise<[string] & {
+            coinbase: string;
+        }>;
+        getCurrentBlockDifficulty(overrides?: CallOverrides): Promise<[BigNumber] & {
+            difficulty: BigNumber;
+        }>;
+        getCurrentBlockGasLimit(overrides?: CallOverrides): Promise<[BigNumber] & {
+            gaslimit: BigNumber;
+        }>;
+        getCurrentBlockTimestamp(overrides?: CallOverrides): Promise<[BigNumber] & {
+            timestamp: BigNumber;
+        }>;
+        getEthBalance(addr: string, overrides?: CallOverrides): Promise<[BigNumber] & {
+            balance: BigNumber;
+        }>;
+        getLastBlockHash(overrides?: CallOverrides): Promise<[string] & {
+            blockHash: string;
+        }>;
+        tryAggregate(requireSuccess: boolean, calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        tryBlockAndAggregate(requireSuccess: boolean, calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+    };
+    aggregate(calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    aggregate3(calls: Multicall3.Call3Struct[], overrides?: PayableOverrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    aggregate3Value(calls: Multicall3.Call3ValueStruct[], overrides?: PayableOverrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    blockAndAggregate(calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    getBasefee(overrides?: CallOverrides): Promise<BigNumber>;
+    getBlockHash(blockNumber: BigNumberish, overrides?: CallOverrides): Promise<string>;
+    getBlockNumber(overrides?: CallOverrides): Promise<BigNumber>;
+    getChainId(overrides?: CallOverrides): Promise<BigNumber>;
+    getCurrentBlockCoinbase(overrides?: CallOverrides): Promise<string>;
+    getCurrentBlockDifficulty(overrides?: CallOverrides): Promise<BigNumber>;
+    getCurrentBlockGasLimit(overrides?: CallOverrides): Promise<BigNumber>;
+    getCurrentBlockTimestamp(overrides?: CallOverrides): Promise<BigNumber>;
+    getEthBalance(addr: string, overrides?: CallOverrides): Promise<BigNumber>;
+    getLastBlockHash(overrides?: CallOverrides): Promise<string>;
+    tryAggregate(requireSuccess: boolean, calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    tryBlockAndAggregate(requireSuccess: boolean, calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    callStatic: {
+        aggregate(calls: Multicall3.CallStruct[], overrides?: CallOverrides): Promise<[BigNumber, string[]] & {
+            blockNumber: BigNumber;
+            returnData: string[];
+        }>;
+        aggregate3(calls: Multicall3.Call3Struct[], overrides?: CallOverrides): Promise<Multicall3.ResultStructOutput[]>;
+        aggregate3Value(calls: Multicall3.Call3ValueStruct[], overrides?: CallOverrides): Promise<Multicall3.ResultStructOutput[]>;
+        blockAndAggregate(calls: Multicall3.CallStruct[], overrides?: CallOverrides): Promise<[
+            BigNumber,
+            string,
+            Multicall3.ResultStructOutput[]
+        ] & {
+            blockNumber: BigNumber;
+            blockHash: string;
+            returnData: Multicall3.ResultStructOutput[];
+        }>;
+        getBasefee(overrides?: CallOverrides): Promise<BigNumber>;
+        getBlockHash(blockNumber: BigNumberish, overrides?: CallOverrides): Promise<string>;
+        getBlockNumber(overrides?: CallOverrides): Promise<BigNumber>;
+        getChainId(overrides?: CallOverrides): Promise<BigNumber>;
+        getCurrentBlockCoinbase(overrides?: CallOverrides): Promise<string>;
+        getCurrentBlockDifficulty(overrides?: CallOverrides): Promise<BigNumber>;
+        getCurrentBlockGasLimit(overrides?: CallOverrides): Promise<BigNumber>;
+        getCurrentBlockTimestamp(overrides?: CallOverrides): Promise<BigNumber>;
+        getEthBalance(addr: string, overrides?: CallOverrides): Promise<BigNumber>;
+        getLastBlockHash(overrides?: CallOverrides): Promise<string>;
+        tryAggregate(requireSuccess: boolean, calls: Multicall3.CallStruct[], overrides?: CallOverrides): Promise<Multicall3.ResultStructOutput[]>;
+        tryBlockAndAggregate(requireSuccess: boolean, calls: Multicall3.CallStruct[], overrides?: CallOverrides): Promise<[
+            BigNumber,
+            string,
+            Multicall3.ResultStructOutput[]
+        ] & {
+            blockNumber: BigNumber;
+            blockHash: string;
+            returnData: Multicall3.ResultStructOutput[];
+        }>;
+    };
+    filters: {};
+    estimateGas: {
+        aggregate(calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        aggregate3(calls: Multicall3.Call3Struct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        aggregate3Value(calls: Multicall3.Call3ValueStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        blockAndAggregate(calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        getBasefee(overrides?: CallOverrides): Promise<BigNumber>;
+        getBlockHash(blockNumber: BigNumberish, overrides?: CallOverrides): Promise<BigNumber>;
+        getBlockNumber(overrides?: CallOverrides): Promise<BigNumber>;
+        getChainId(overrides?: CallOverrides): Promise<BigNumber>;
+        getCurrentBlockCoinbase(overrides?: CallOverrides): Promise<BigNumber>;
+        getCurrentBlockDifficulty(overrides?: CallOverrides): Promise<BigNumber>;
+        getCurrentBlockGasLimit(overrides?: CallOverrides): Promise<BigNumber>;
+        getCurrentBlockTimestamp(overrides?: CallOverrides): Promise<BigNumber>;
+        getEthBalance(addr: string, overrides?: CallOverrides): Promise<BigNumber>;
+        getLastBlockHash(overrides?: CallOverrides): Promise<BigNumber>;
+        tryAggregate(requireSuccess: boolean, calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        tryBlockAndAggregate(requireSuccess: boolean, calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+    };
+    populateTransaction: {
+        aggregate(calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        aggregate3(calls: Multicall3.Call3Struct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        aggregate3Value(calls: Multicall3.Call3ValueStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        blockAndAggregate(calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        getBasefee(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getBlockHash(blockNumber: BigNumberish, overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getBlockNumber(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getChainId(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getCurrentBlockCoinbase(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getCurrentBlockDifficulty(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getCurrentBlockGasLimit(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getCurrentBlockTimestamp(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getEthBalance(addr: string, overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getLastBlockHash(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        tryAggregate(requireSuccess: boolean, calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        tryBlockAndAggregate(requireSuccess: boolean, calls: Multicall3.CallStruct[], overrides?: PayableOverrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+    };
+}

lib/contracts/MulticallAbi.js

@@ -0,0 +1,3 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=MulticallAbi.js.map

lib/contracts/MulticallAbi.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"MulticallAbi.js","sourceRoot":"","sources":["../../src/contracts/MulticallAbi.ts"],"names":[],"mappings":""}

lib/contracts/OffchainOracleAbi.d.ts

@@ -0,0 +1,268 @@
+import type { BaseContract, BigNumber, BigNumberish, BytesLike, CallOverrides, ContractTransaction, Overrides, PopulatedTransaction, Signer, utils } from 'ethers';
+import type { FunctionFragment, Result, EventFragment } from '@ethersproject/abi';
+import type { Listener, Provider } from '@ethersproject/providers';
+import type { TypedEventFilter, TypedEvent, TypedListener, OnEvent } from './common';
+export interface OffchainOracleAbiInterface extends utils.Interface {
+    functions: {
+        'addConnector(address)': FunctionFragment;
+        'addOracle(address,uint8)': FunctionFragment;
+        'connectors()': FunctionFragment;
+        'getRate(address,address,bool)': FunctionFragment;
+        'getRateToEth(address,bool)': FunctionFragment;
+        'multiWrapper()': FunctionFragment;
+        'oracles()': FunctionFragment;
+        'owner()': FunctionFragment;
+        'removeConnector(address)': FunctionFragment;
+        'removeOracle(address,uint8)': FunctionFragment;
+        'renounceOwnership()': FunctionFragment;
+        'setMultiWrapper(address)': FunctionFragment;
+        'transferOwnership(address)': FunctionFragment;
+    };
+    getFunction(nameOrSignatureOrTopic: 'addConnector' | 'addOracle' | 'connectors' | 'getRate' | 'getRateToEth' | 'multiWrapper' | 'oracles' | 'owner' | 'removeConnector' | 'removeOracle' | 'renounceOwnership' | 'setMultiWrapper' | 'transferOwnership'): FunctionFragment;
+    encodeFunctionData(functionFragment: 'addConnector', values: [string]): string;
+    encodeFunctionData(functionFragment: 'addOracle', values: [string, BigNumberish]): string;
+    encodeFunctionData(functionFragment: 'connectors', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'getRate', values: [string, string, boolean]): string;
+    encodeFunctionData(functionFragment: 'getRateToEth', values: [string, boolean]): string;
+    encodeFunctionData(functionFragment: 'multiWrapper', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'oracles', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'owner', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'removeConnector', values: [string]): string;
+    encodeFunctionData(functionFragment: 'removeOracle', values: [string, BigNumberish]): string;
+    encodeFunctionData(functionFragment: 'renounceOwnership', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'setMultiWrapper', values: [string]): string;
+    encodeFunctionData(functionFragment: 'transferOwnership', values: [string]): string;
+    decodeFunctionResult(functionFragment: 'addConnector', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'addOracle', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'connectors', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getRate', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getRateToEth', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'multiWrapper', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'oracles', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'owner', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'removeConnector', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'removeOracle', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'renounceOwnership', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'setMultiWrapper', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'transferOwnership', data: BytesLike): Result;
+    events: {
+        'ConnectorAdded(address)': EventFragment;
+        'ConnectorRemoved(address)': EventFragment;
+        'MultiWrapperUpdated(address)': EventFragment;
+        'OracleAdded(address,uint8)': EventFragment;
+        'OracleRemoved(address,uint8)': EventFragment;
+        'OwnershipTransferred(address,address)': EventFragment;
+    };
+    getEvent(nameOrSignatureOrTopic: 'ConnectorAdded'): EventFragment;
+    getEvent(nameOrSignatureOrTopic: 'ConnectorRemoved'): EventFragment;
+    getEvent(nameOrSignatureOrTopic: 'MultiWrapperUpdated'): EventFragment;
+    getEvent(nameOrSignatureOrTopic: 'OracleAdded'): EventFragment;
+    getEvent(nameOrSignatureOrTopic: 'OracleRemoved'): EventFragment;
+    getEvent(nameOrSignatureOrTopic: 'OwnershipTransferred'): EventFragment;
+}
+export interface ConnectorAddedEventObject {
+    connector: string;
+}
+export type ConnectorAddedEvent = TypedEvent<[string], ConnectorAddedEventObject>;
+export type ConnectorAddedEventFilter = TypedEventFilter<ConnectorAddedEvent>;
+export interface ConnectorRemovedEventObject {
+    connector: string;
+}
+export type ConnectorRemovedEvent = TypedEvent<[string], ConnectorRemovedEventObject>;
+export type ConnectorRemovedEventFilter = TypedEventFilter<ConnectorRemovedEvent>;
+export interface MultiWrapperUpdatedEventObject {
+    multiWrapper: string;
+}
+export type MultiWrapperUpdatedEvent = TypedEvent<[string], MultiWrapperUpdatedEventObject>;
+export type MultiWrapperUpdatedEventFilter = TypedEventFilter<MultiWrapperUpdatedEvent>;
+export interface OracleAddedEventObject {
+    oracle: string;
+    oracleType: number;
+}
+export type OracleAddedEvent = TypedEvent<[string, number], OracleAddedEventObject>;
+export type OracleAddedEventFilter = TypedEventFilter<OracleAddedEvent>;
+export interface OracleRemovedEventObject {
+    oracle: string;
+    oracleType: number;
+}
+export type OracleRemovedEvent = TypedEvent<[string, number], OracleRemovedEventObject>;
+export type OracleRemovedEventFilter = TypedEventFilter<OracleRemovedEvent>;
+export interface OwnershipTransferredEventObject {
+    previousOwner: string;
+    newOwner: string;
+}
+export type OwnershipTransferredEvent = TypedEvent<[string, string], OwnershipTransferredEventObject>;
+export type OwnershipTransferredEventFilter = TypedEventFilter<OwnershipTransferredEvent>;
+export interface OffchainOracleAbi extends BaseContract {
+    connect(signerOrProvider: Signer | Provider | string): this;
+    attach(addressOrName: string): this;
+    deployed(): Promise<this>;
+    interface: OffchainOracleAbiInterface;
+    queryFilter<TEvent extends TypedEvent>(event: TypedEventFilter<TEvent>, fromBlockOrBlockhash?: string | number | undefined, toBlock?: string | number | undefined): Promise<Array<TEvent>>;
+    listeners<TEvent extends TypedEvent>(eventFilter?: TypedEventFilter<TEvent>): Array<TypedListener<TEvent>>;
+    listeners(eventName?: string): Array<Listener>;
+    removeAllListeners<TEvent extends TypedEvent>(eventFilter: TypedEventFilter<TEvent>): this;
+    removeAllListeners(eventName?: string): this;
+    off: OnEvent<this>;
+    on: OnEvent<this>;
+    once: OnEvent<this>;
+    removeListener: OnEvent<this>;
+    functions: {
+        addConnector(connector: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        addOracle(oracle: string, oracleKind: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        connectors(overrides?: CallOverrides): Promise<[string[]] & {
+            allConnectors: string[];
+        }>;
+        getRate(srcToken: string, dstToken: string, useWrappers: boolean, overrides?: CallOverrides): Promise<[BigNumber] & {
+            weightedRate: BigNumber;
+        }>;
+        getRateToEth(srcToken: string, useSrcWrappers: boolean, overrides?: CallOverrides): Promise<[BigNumber] & {
+            weightedRate: BigNumber;
+        }>;
+        multiWrapper(overrides?: CallOverrides): Promise<[string]>;
+        oracles(overrides?: CallOverrides): Promise<[string[], number[]] & {
+            allOracles: string[];
+            oracleTypes: number[];
+        }>;
+        owner(overrides?: CallOverrides): Promise<[string]>;
+        removeConnector(connector: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        removeOracle(oracle: string, oracleKind: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        renounceOwnership(overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        setMultiWrapper(_multiWrapper: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        transferOwnership(newOwner: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+    };
+    addConnector(connector: string, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    addOracle(oracle: string, oracleKind: BigNumberish, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    connectors(overrides?: CallOverrides): Promise<string[]>;
+    getRate(srcToken: string, dstToken: string, useWrappers: boolean, overrides?: CallOverrides): Promise<BigNumber>;
+    getRateToEth(srcToken: string, useSrcWrappers: boolean, overrides?: CallOverrides): Promise<BigNumber>;
+    multiWrapper(overrides?: CallOverrides): Promise<string>;
+    oracles(overrides?: CallOverrides): Promise<[string[], number[]] & {
+        allOracles: string[];
+        oracleTypes: number[];
+    }>;
+    owner(overrides?: CallOverrides): Promise<string>;
+    removeConnector(connector: string, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    removeOracle(oracle: string, oracleKind: BigNumberish, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    renounceOwnership(overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    setMultiWrapper(_multiWrapper: string, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    transferOwnership(newOwner: string, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    callStatic: {
+        addConnector(connector: string, overrides?: CallOverrides): Promise<void>;
+        addOracle(oracle: string, oracleKind: BigNumberish, overrides?: CallOverrides): Promise<void>;
+        connectors(overrides?: CallOverrides): Promise<string[]>;
+        getRate(srcToken: string, dstToken: string, useWrappers: boolean, overrides?: CallOverrides): Promise<BigNumber>;
+        getRateToEth(srcToken: string, useSrcWrappers: boolean, overrides?: CallOverrides): Promise<BigNumber>;
+        multiWrapper(overrides?: CallOverrides): Promise<string>;
+        oracles(overrides?: CallOverrides): Promise<[string[], number[]] & {
+            allOracles: string[];
+            oracleTypes: number[];
+        }>;
+        owner(overrides?: CallOverrides): Promise<string>;
+        removeConnector(connector: string, overrides?: CallOverrides): Promise<void>;
+        removeOracle(oracle: string, oracleKind: BigNumberish, overrides?: CallOverrides): Promise<void>;
+        renounceOwnership(overrides?: CallOverrides): Promise<void>;
+        setMultiWrapper(_multiWrapper: string, overrides?: CallOverrides): Promise<void>;
+        transferOwnership(newOwner: string, overrides?: CallOverrides): Promise<void>;
+    };
+    filters: {
+        'ConnectorAdded(address)'(connector?: null): ConnectorAddedEventFilter;
+        ConnectorAdded(connector?: null): ConnectorAddedEventFilter;
+        'ConnectorRemoved(address)'(connector?: null): ConnectorRemovedEventFilter;
+        ConnectorRemoved(connector?: null): ConnectorRemovedEventFilter;
+        'MultiWrapperUpdated(address)'(multiWrapper?: null): MultiWrapperUpdatedEventFilter;
+        MultiWrapperUpdated(multiWrapper?: null): MultiWrapperUpdatedEventFilter;
+        'OracleAdded(address,uint8)'(oracle?: null, oracleType?: null): OracleAddedEventFilter;
+        OracleAdded(oracle?: null, oracleType?: null): OracleAddedEventFilter;
+        'OracleRemoved(address,uint8)'(oracle?: null, oracleType?: null): OracleRemovedEventFilter;
+        OracleRemoved(oracle?: null, oracleType?: null): OracleRemovedEventFilter;
+        'OwnershipTransferred(address,address)'(previousOwner?: string | null, newOwner?: string | null): OwnershipTransferredEventFilter;
+        OwnershipTransferred(previousOwner?: string | null, newOwner?: string | null): OwnershipTransferredEventFilter;
+    };
+    estimateGas: {
+        addConnector(connector: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        addOracle(oracle: string, oracleKind: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        connectors(overrides?: CallOverrides): Promise<BigNumber>;
+        getRate(srcToken: string, dstToken: string, useWrappers: boolean, overrides?: CallOverrides): Promise<BigNumber>;
+        getRateToEth(srcToken: string, useSrcWrappers: boolean, overrides?: CallOverrides): Promise<BigNumber>;
+        multiWrapper(overrides?: CallOverrides): Promise<BigNumber>;
+        oracles(overrides?: CallOverrides): Promise<BigNumber>;
+        owner(overrides?: CallOverrides): Promise<BigNumber>;
+        removeConnector(connector: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        removeOracle(oracle: string, oracleKind: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        renounceOwnership(overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        setMultiWrapper(_multiWrapper: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        transferOwnership(newOwner: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+    };
+    populateTransaction: {
+        addConnector(connector: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        addOracle(oracle: string, oracleKind: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        connectors(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getRate(srcToken: string, dstToken: string, useWrappers: boolean, overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getRateToEth(srcToken: string, useSrcWrappers: boolean, overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        multiWrapper(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        oracles(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        owner(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        removeConnector(connector: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        removeOracle(oracle: string, oracleKind: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        renounceOwnership(overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        setMultiWrapper(_multiWrapper: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        transferOwnership(newOwner: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+    };
+}

lib/contracts/OffchainOracleAbi.js

@@ -0,0 +1,3 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=OffchainOracleAbi.js.map

lib/contracts/OffchainOracleAbi.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"OffchainOracleAbi.js","sourceRoot":"","sources":["../../src/contracts/OffchainOracleAbi.ts"],"names":[],"mappings":""}

lib/contracts/OptimismL1FeeOracleAbi.d.ts

@@ -0,0 +1,267 @@
+import type { BaseContract, BigNumber, BigNumberish, BytesLike, CallOverrides, ContractTransaction, Overrides, PopulatedTransaction, Signer, utils } from 'ethers';
+import type { FunctionFragment, Result, EventFragment } from '@ethersproject/abi';
+import type { Listener, Provider } from '@ethersproject/providers';
+import type { TypedEventFilter, TypedEvent, TypedListener, OnEvent } from './common';
+export interface OptimismL1FeeOracleAbiInterface extends utils.Interface {
+    functions: {
+        'decimals()': FunctionFragment;
+        'gasPrice()': FunctionFragment;
+        'getL1Fee(bytes)': FunctionFragment;
+        'getL1GasUsed(bytes)': FunctionFragment;
+        'l1BaseFee()': FunctionFragment;
+        'overhead()': FunctionFragment;
+        'owner()': FunctionFragment;
+        'renounceOwnership()': FunctionFragment;
+        'scalar()': FunctionFragment;
+        'setDecimals(uint256)': FunctionFragment;
+        'setGasPrice(uint256)': FunctionFragment;
+        'setL1BaseFee(uint256)': FunctionFragment;
+        'setOverhead(uint256)': FunctionFragment;
+        'setScalar(uint256)': FunctionFragment;
+        'transferOwnership(address)': FunctionFragment;
+    };
+    getFunction(nameOrSignatureOrTopic: 'decimals' | 'gasPrice' | 'getL1Fee' | 'getL1GasUsed' | 'l1BaseFee' | 'overhead' | 'owner' | 'renounceOwnership' | 'scalar' | 'setDecimals' | 'setGasPrice' | 'setL1BaseFee' | 'setOverhead' | 'setScalar' | 'transferOwnership'): FunctionFragment;
+    encodeFunctionData(functionFragment: 'decimals', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'gasPrice', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'getL1Fee', values: [BytesLike]): string;
+    encodeFunctionData(functionFragment: 'getL1GasUsed', values: [BytesLike]): string;
+    encodeFunctionData(functionFragment: 'l1BaseFee', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'overhead', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'owner', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'renounceOwnership', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'scalar', values?: undefined): string;
+    encodeFunctionData(functionFragment: 'setDecimals', values: [BigNumberish]): string;
+    encodeFunctionData(functionFragment: 'setGasPrice', values: [BigNumberish]): string;
+    encodeFunctionData(functionFragment: 'setL1BaseFee', values: [BigNumberish]): string;
+    encodeFunctionData(functionFragment: 'setOverhead', values: [BigNumberish]): string;
+    encodeFunctionData(functionFragment: 'setScalar', values: [BigNumberish]): string;
+    encodeFunctionData(functionFragment: 'transferOwnership', values: [string]): string;
+    decodeFunctionResult(functionFragment: 'decimals', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'gasPrice', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getL1Fee', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'getL1GasUsed', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'l1BaseFee', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'overhead', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'owner', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'renounceOwnership', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'scalar', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'setDecimals', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'setGasPrice', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'setL1BaseFee', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'setOverhead', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'setScalar', data: BytesLike): Result;
+    decodeFunctionResult(functionFragment: 'transferOwnership', data: BytesLike): Result;
+    events: {
+        'DecimalsUpdated(uint256)': EventFragment;
+        'GasPriceUpdated(uint256)': EventFragment;
+        'L1BaseFeeUpdated(uint256)': EventFragment;
+        'OverheadUpdated(uint256)': EventFragment;
+        'OwnershipTransferred(address,address)': EventFragment;
+        'ScalarUpdated(uint256)': EventFragment;
+    };
+    getEvent(nameOrSignatureOrTopic: 'DecimalsUpdated'): EventFragment;
+    getEvent(nameOrSignatureOrTopic: 'GasPriceUpdated'): EventFragment;
+    getEvent(nameOrSignatureOrTopic: 'L1BaseFeeUpdated'): EventFragment;
+    getEvent(nameOrSignatureOrTopic: 'OverheadUpdated'): EventFragment;
+    getEvent(nameOrSignatureOrTopic: 'OwnershipTransferred'): EventFragment;
+    getEvent(nameOrSignatureOrTopic: 'ScalarUpdated'): EventFragment;
+}
+export interface DecimalsUpdatedEventObject {
+    arg0: BigNumber;
+}
+export type DecimalsUpdatedEvent = TypedEvent<[BigNumber], DecimalsUpdatedEventObject>;
+export type DecimalsUpdatedEventFilter = TypedEventFilter<DecimalsUpdatedEvent>;
+export interface GasPriceUpdatedEventObject {
+    arg0: BigNumber;
+}
+export type GasPriceUpdatedEvent = TypedEvent<[BigNumber], GasPriceUpdatedEventObject>;
+export type GasPriceUpdatedEventFilter = TypedEventFilter<GasPriceUpdatedEvent>;
+export interface L1BaseFeeUpdatedEventObject {
+    arg0: BigNumber;
+}
+export type L1BaseFeeUpdatedEvent = TypedEvent<[BigNumber], L1BaseFeeUpdatedEventObject>;
+export type L1BaseFeeUpdatedEventFilter = TypedEventFilter<L1BaseFeeUpdatedEvent>;
+export interface OverheadUpdatedEventObject {
+    arg0: BigNumber;
+}
+export type OverheadUpdatedEvent = TypedEvent<[BigNumber], OverheadUpdatedEventObject>;
+export type OverheadUpdatedEventFilter = TypedEventFilter<OverheadUpdatedEvent>;
+export interface OwnershipTransferredEventObject {
+    previousOwner: string;
+    newOwner: string;
+}
+export type OwnershipTransferredEvent = TypedEvent<[string, string], OwnershipTransferredEventObject>;
+export type OwnershipTransferredEventFilter = TypedEventFilter<OwnershipTransferredEvent>;
+export interface ScalarUpdatedEventObject {
+    arg0: BigNumber;
+}
+export type ScalarUpdatedEvent = TypedEvent<[BigNumber], ScalarUpdatedEventObject>;
+export type ScalarUpdatedEventFilter = TypedEventFilter<ScalarUpdatedEvent>;
+export interface OptimismL1FeeOracleAbi extends BaseContract {
+    connect(signerOrProvider: Signer | Provider | string): this;
+    attach(addressOrName: string): this;
+    deployed(): Promise<this>;
+    interface: OptimismL1FeeOracleAbiInterface;
+    queryFilter<TEvent extends TypedEvent>(event: TypedEventFilter<TEvent>, fromBlockOrBlockhash?: string | number | undefined, toBlock?: string | number | undefined): Promise<Array<TEvent>>;
+    listeners<TEvent extends TypedEvent>(eventFilter?: TypedEventFilter<TEvent>): Array<TypedListener<TEvent>>;
+    listeners(eventName?: string): Array<Listener>;
+    removeAllListeners<TEvent extends TypedEvent>(eventFilter: TypedEventFilter<TEvent>): this;
+    removeAllListeners(eventName?: string): this;
+    off: OnEvent<this>;
+    on: OnEvent<this>;
+    once: OnEvent<this>;
+    removeListener: OnEvent<this>;
+    functions: {
+        decimals(overrides?: CallOverrides): Promise<[BigNumber]>;
+        gasPrice(overrides?: CallOverrides): Promise<[BigNumber]>;
+        getL1Fee(_data: BytesLike, overrides?: CallOverrides): Promise<[BigNumber]>;
+        getL1GasUsed(_data: BytesLike, overrides?: CallOverrides): Promise<[BigNumber]>;
+        l1BaseFee(overrides?: CallOverrides): Promise<[BigNumber]>;
+        overhead(overrides?: CallOverrides): Promise<[BigNumber]>;
+        owner(overrides?: CallOverrides): Promise<[string]>;
+        renounceOwnership(overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        scalar(overrides?: CallOverrides): Promise<[BigNumber]>;
+        setDecimals(_decimals: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        setGasPrice(_gasPrice: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        setL1BaseFee(_baseFee: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        setOverhead(_overhead: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        setScalar(_scalar: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+        transferOwnership(newOwner: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<ContractTransaction>;
+    };
+    decimals(overrides?: CallOverrides): Promise<BigNumber>;
+    gasPrice(overrides?: CallOverrides): Promise<BigNumber>;
+    getL1Fee(_data: BytesLike, overrides?: CallOverrides): Promise<BigNumber>;
+    getL1GasUsed(_data: BytesLike, overrides?: CallOverrides): Promise<BigNumber>;
+    l1BaseFee(overrides?: CallOverrides): Promise<BigNumber>;
+    overhead(overrides?: CallOverrides): Promise<BigNumber>;
+    owner(overrides?: CallOverrides): Promise<string>;
+    renounceOwnership(overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    scalar(overrides?: CallOverrides): Promise<BigNumber>;
+    setDecimals(_decimals: BigNumberish, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    setGasPrice(_gasPrice: BigNumberish, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    setL1BaseFee(_baseFee: BigNumberish, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    setOverhead(_overhead: BigNumberish, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    setScalar(_scalar: BigNumberish, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    transferOwnership(newOwner: string, overrides?: Overrides & {
+        from?: string;
+    }): Promise<ContractTransaction>;
+    callStatic: {
+        decimals(overrides?: CallOverrides): Promise<BigNumber>;
+        gasPrice(overrides?: CallOverrides): Promise<BigNumber>;
+        getL1Fee(_data: BytesLike, overrides?: CallOverrides): Promise<BigNumber>;
+        getL1GasUsed(_data: BytesLike, overrides?: CallOverrides): Promise<BigNumber>;
+        l1BaseFee(overrides?: CallOverrides): Promise<BigNumber>;
+        overhead(overrides?: CallOverrides): Promise<BigNumber>;
+        owner(overrides?: CallOverrides): Promise<string>;
+        renounceOwnership(overrides?: CallOverrides): Promise<void>;
+        scalar(overrides?: CallOverrides): Promise<BigNumber>;
+        setDecimals(_decimals: BigNumberish, overrides?: CallOverrides): Promise<void>;
+        setGasPrice(_gasPrice: BigNumberish, overrides?: CallOverrides): Promise<void>;
+        setL1BaseFee(_baseFee: BigNumberish, overrides?: CallOverrides): Promise<void>;
+        setOverhead(_overhead: BigNumberish, overrides?: CallOverrides): Promise<void>;
+        setScalar(_scalar: BigNumberish, overrides?: CallOverrides): Promise<void>;
+        transferOwnership(newOwner: string, overrides?: CallOverrides): Promise<void>;
+    };
+    filters: {
+        'DecimalsUpdated(uint256)'(arg0?: null): DecimalsUpdatedEventFilter;
+        DecimalsUpdated(arg0?: null): DecimalsUpdatedEventFilter;
+        'GasPriceUpdated(uint256)'(arg0?: null): GasPriceUpdatedEventFilter;
+        GasPriceUpdated(arg0?: null): GasPriceUpdatedEventFilter;
+        'L1BaseFeeUpdated(uint256)'(arg0?: null): L1BaseFeeUpdatedEventFilter;
+        L1BaseFeeUpdated(arg0?: null): L1BaseFeeUpdatedEventFilter;
+        'OverheadUpdated(uint256)'(arg0?: null): OverheadUpdatedEventFilter;
+        OverheadUpdated(arg0?: null): OverheadUpdatedEventFilter;
+        'OwnershipTransferred(address,address)'(previousOwner?: string | null, newOwner?: string | null): OwnershipTransferredEventFilter;
+        OwnershipTransferred(previousOwner?: string | null, newOwner?: string | null): OwnershipTransferredEventFilter;
+        'ScalarUpdated(uint256)'(arg0?: null): ScalarUpdatedEventFilter;
+        ScalarUpdated(arg0?: null): ScalarUpdatedEventFilter;
+    };
+    estimateGas: {
+        decimals(overrides?: CallOverrides): Promise<BigNumber>;
+        gasPrice(overrides?: CallOverrides): Promise<BigNumber>;
+        getL1Fee(_data: BytesLike, overrides?: CallOverrides): Promise<BigNumber>;
+        getL1GasUsed(_data: BytesLike, overrides?: CallOverrides): Promise<BigNumber>;
+        l1BaseFee(overrides?: CallOverrides): Promise<BigNumber>;
+        overhead(overrides?: CallOverrides): Promise<BigNumber>;
+        owner(overrides?: CallOverrides): Promise<BigNumber>;
+        renounceOwnership(overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        scalar(overrides?: CallOverrides): Promise<BigNumber>;
+        setDecimals(_decimals: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        setGasPrice(_gasPrice: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        setL1BaseFee(_baseFee: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        setOverhead(_overhead: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        setScalar(_scalar: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+        transferOwnership(newOwner: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<BigNumber>;
+    };
+    populateTransaction: {
+        decimals(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        gasPrice(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getL1Fee(_data: BytesLike, overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        getL1GasUsed(_data: BytesLike, overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        l1BaseFee(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        overhead(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        owner(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        renounceOwnership(overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        scalar(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+        setDecimals(_decimals: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        setGasPrice(_gasPrice: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        setL1BaseFee(_baseFee: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        setOverhead(_overhead: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        setScalar(_scalar: BigNumberish, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+        transferOwnership(newOwner: string, overrides?: Overrides & {
+            from?: string;
+        }): Promise<PopulatedTransaction>;
+    };
+}

lib/contracts/OptimismL1FeeOracleAbi.js

@@ -0,0 +1,3 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=OptimismL1FeeOracleAbi.js.map

lib/contracts/OptimismL1FeeOracleAbi.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"OptimismL1FeeOracleAbi.js","sourceRoot":"","sources":["../../src/contracts/OptimismL1FeeOracleAbi.ts"],"names":[],"mappings":""}

lib/contracts/common.d.ts

@@ -0,0 +1,21 @@
+import type { Listener } from '@ethersproject/providers';
+import type { Event, EventFilter } from 'ethers';
+export interface TypedEvent<TArgsArray extends Array<any> = any, TArgsObject = any> extends Event {
+    args: TArgsArray & TArgsObject;
+}
+export interface TypedEventFilter<_TEvent extends TypedEvent> extends EventFilter {
+}
+export interface TypedListener<TEvent extends TypedEvent> {
+    (...listenerArg: [...__TypechainArgsArray<TEvent>, TEvent]): void;
+}
+type __TypechainArgsArray<T> = T extends TypedEvent<infer U> ? U : never;
+export interface OnEvent<TRes> {
+    <TEvent extends TypedEvent>(eventFilter: TypedEventFilter<TEvent>, listener: TypedListener<TEvent>): TRes;
+    (eventName: string, listener: Listener): TRes;
+}
+export type MinEthersFactory<C, ARGS> = {
+    deploy(...a: ARGS[]): Promise<C>;
+};
+export type GetContractTypeFromFactory<F> = F extends MinEthersFactory<infer C, any> ? C : never;
+export type GetARGsTypeFromFactory<F> = F extends MinEthersFactory<any, any> ? Parameters<F['deploy']> : never;
+export {};

lib/contracts/common.js

@@ -0,0 +1,3 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=common.js.map

lib/contracts/common.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"common.js","sourceRoot":"","sources":["../../src/contracts/common.ts"],"names":[],"mappings":""}

lib/contracts/factories.d.ts

@@ -0,0 +1,5 @@
+import { Provider } from '@ethersproject/abstract-provider';
+import { ChainId } from '../config';
+export declare const getOptimismL1FeeOracle: (provider: Provider) => import("./OptimismL1FeeOracleAbi").OptimismL1FeeOracleAbi;
+export declare const getOffchainOracleContract: (provider: Provider, chainId?: ChainId) => import("./OffchainOracleAbi").OffchainOracleAbi;
+export declare const getMultiCallContract: (provider: Provider) => import("./MulticallAbi").MulticallAbi;

lib/contracts/factories.js

@@ -0,0 +1,22 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getMultiCallContract = exports.getOffchainOracleContract = exports.getOptimismL1FeeOracle = void 0;
+var _1 = require("./");
+var config_1 = require("../config");
+var config_2 = require("../config");
+var getOptimismL1FeeOracle = function (provider) {
+    return _1.OptimismL1FeeOracleAbi__factory.connect(config_1.optimismL1FeeOracleAddress, provider);
+};
+exports.getOptimismL1FeeOracle = getOptimismL1FeeOracle;
+var getOffchainOracleContract = function (provider, chainId) {
+    if (chainId === config_2.ChainId.SEPOLIA) {
+        return _1.OffchainOracleAbi__factory.connect(config_1.sepoliaOffchainOracleAddress, provider);
+    }
+    return _1.OffchainOracleAbi__factory.connect(config_1.offchainOracleAddress, provider);
+};
+exports.getOffchainOracleContract = getOffchainOracleContract;
+var getMultiCallContract = function (provider) {
+    return _1.MulticallAbi__factory.connect(config_1.multiCallAddress, provider);
+};
+exports.getMultiCallContract = getMultiCallContract;
+//# sourceMappingURL=factories.js.map

lib/contracts/factories.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"factories.js","sourceRoot":"","sources":["../../src/contracts/factories.ts"],"names":[],"mappings":";;;AAAA,uBAAwG;AACxG,oCAKmB;AAEnB,oCAAoC;AAE7B,IAAM,sBAAsB,GAAG,UAAC,QAAkB;IACvD,OAAO,kCAA+B,CAAC,OAAO,CAAC,mCAA0B,EAAE,QAAQ,CAAC,CAAC;AACvF,CAAC,CAAC;AAFW,QAAA,sBAAsB,0BAEjC;AAEK,IAAM,yBAAyB,GAAG,UAAC,QAAkB,EAAE,OAAiB;IAC7E,IAAI,OAAO,KAAK,gBAAO,CAAC,OAAO,EAAE;QAC/B,OAAO,6BAA0B,CAAC,OAAO,CAAC,qCAA4B,EAAE,QAAQ,CAAC,CAAC;KACnF;IACD,OAAO,6BAA0B,CAAC,OAAO,CAAC,8BAAqB,EAAE,QAAQ,CAAC,CAAC;AAC7E,CAAC,CAAC;AALW,QAAA,yBAAyB,6BAKpC;AAEK,IAAM,oBAAoB,GAAG,UAAC,QAAkB;IACrD,OAAO,wBAAqB,CAAC,OAAO,CAAC,yBAAgB,EAAE,QAAQ,CAAC,CAAC;AACnE,CAAC,CAAC;AAFW,QAAA,oBAAoB,wBAE/B"}

lib/contracts/factories/MulticallAbi__factory.d.ts

@@ -0,0 +1,339 @@
+import { Signer } from 'ethers';
+import type { Provider } from '@ethersproject/providers';
+import type { MulticallAbi, MulticallAbiInterface } from '../MulticallAbi';
+export declare class MulticallAbi__factory {
+    static readonly abi: readonly [{
+        readonly inputs: readonly [{
+            readonly components: readonly [{
+                readonly internalType: "address";
+                readonly name: "target";
+                readonly type: "address";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "callData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Call[]";
+            readonly name: "calls";
+            readonly type: "tuple[]";
+        }];
+        readonly name: "aggregate";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "blockNumber";
+            readonly type: "uint256";
+        }, {
+            readonly internalType: "bytes[]";
+            readonly name: "returnData";
+            readonly type: "bytes[]";
+        }];
+        readonly stateMutability: "payable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly components: readonly [{
+                readonly internalType: "address";
+                readonly name: "target";
+                readonly type: "address";
+            }, {
+                readonly internalType: "bool";
+                readonly name: "allowFailure";
+                readonly type: "bool";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "callData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Call3[]";
+            readonly name: "calls";
+            readonly type: "tuple[]";
+        }];
+        readonly name: "aggregate3";
+        readonly outputs: readonly [{
+            readonly components: readonly [{
+                readonly internalType: "bool";
+                readonly name: "success";
+                readonly type: "bool";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "returnData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Result[]";
+            readonly name: "returnData";
+            readonly type: "tuple[]";
+        }];
+        readonly stateMutability: "payable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly components: readonly [{
+                readonly internalType: "address";
+                readonly name: "target";
+                readonly type: "address";
+            }, {
+                readonly internalType: "bool";
+                readonly name: "allowFailure";
+                readonly type: "bool";
+            }, {
+                readonly internalType: "uint256";
+                readonly name: "value";
+                readonly type: "uint256";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "callData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Call3Value[]";
+            readonly name: "calls";
+            readonly type: "tuple[]";
+        }];
+        readonly name: "aggregate3Value";
+        readonly outputs: readonly [{
+            readonly components: readonly [{
+                readonly internalType: "bool";
+                readonly name: "success";
+                readonly type: "bool";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "returnData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Result[]";
+            readonly name: "returnData";
+            readonly type: "tuple[]";
+        }];
+        readonly stateMutability: "payable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly components: readonly [{
+                readonly internalType: "address";
+                readonly name: "target";
+                readonly type: "address";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "callData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Call[]";
+            readonly name: "calls";
+            readonly type: "tuple[]";
+        }];
+        readonly name: "blockAndAggregate";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "blockNumber";
+            readonly type: "uint256";
+        }, {
+            readonly internalType: "bytes32";
+            readonly name: "blockHash";
+            readonly type: "bytes32";
+        }, {
+            readonly components: readonly [{
+                readonly internalType: "bool";
+                readonly name: "success";
+                readonly type: "bool";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "returnData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Result[]";
+            readonly name: "returnData";
+            readonly type: "tuple[]";
+        }];
+        readonly stateMutability: "payable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "getBasefee";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "basefee";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "blockNumber";
+            readonly type: "uint256";
+        }];
+        readonly name: "getBlockHash";
+        readonly outputs: readonly [{
+            readonly internalType: "bytes32";
+            readonly name: "blockHash";
+            readonly type: "bytes32";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "getBlockNumber";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "blockNumber";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "getChainId";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "chainid";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "getCurrentBlockCoinbase";
+        readonly outputs: readonly [{
+            readonly internalType: "address";
+            readonly name: "coinbase";
+            readonly type: "address";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "getCurrentBlockDifficulty";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "difficulty";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "getCurrentBlockGasLimit";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "gaslimit";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "getCurrentBlockTimestamp";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "timestamp";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "address";
+            readonly name: "addr";
+            readonly type: "address";
+        }];
+        readonly name: "getEthBalance";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "balance";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "getLastBlockHash";
+        readonly outputs: readonly [{
+            readonly internalType: "bytes32";
+            readonly name: "blockHash";
+            readonly type: "bytes32";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "bool";
+            readonly name: "requireSuccess";
+            readonly type: "bool";
+        }, {
+            readonly components: readonly [{
+                readonly internalType: "address";
+                readonly name: "target";
+                readonly type: "address";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "callData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Call[]";
+            readonly name: "calls";
+            readonly type: "tuple[]";
+        }];
+        readonly name: "tryAggregate";
+        readonly outputs: readonly [{
+            readonly components: readonly [{
+                readonly internalType: "bool";
+                readonly name: "success";
+                readonly type: "bool";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "returnData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Result[]";
+            readonly name: "returnData";
+            readonly type: "tuple[]";
+        }];
+        readonly stateMutability: "payable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "bool";
+            readonly name: "requireSuccess";
+            readonly type: "bool";
+        }, {
+            readonly components: readonly [{
+                readonly internalType: "address";
+                readonly name: "target";
+                readonly type: "address";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "callData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Call[]";
+            readonly name: "calls";
+            readonly type: "tuple[]";
+        }];
+        readonly name: "tryBlockAndAggregate";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "blockNumber";
+            readonly type: "uint256";
+        }, {
+            readonly internalType: "bytes32";
+            readonly name: "blockHash";
+            readonly type: "bytes32";
+        }, {
+            readonly components: readonly [{
+                readonly internalType: "bool";
+                readonly name: "success";
+                readonly type: "bool";
+            }, {
+                readonly internalType: "bytes";
+                readonly name: "returnData";
+                readonly type: "bytes";
+            }];
+            readonly internalType: "struct Multicall3.Result[]";
+            readonly name: "returnData";
+            readonly type: "tuple[]";
+        }];
+        readonly stateMutability: "payable";
+        readonly type: "function";
+    }];
+    static createInterface(): MulticallAbiInterface;
+    static connect(address: string, signerOrProvider: Signer | Provider): MulticallAbi;
+}

lib/contracts/factories/MulticallAbi__factory.js

@@ -0,0 +1,460 @@
+"use strict";
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MulticallAbi__factory = void 0;
+var ethers_1 = require("ethers");
+var _abi = [
+    {
+        inputs: [
+            {
+                components: [
+                    {
+                        internalType: 'address',
+                        name: 'target',
+                        type: 'address',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'callData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Call[]',
+                name: 'calls',
+                type: 'tuple[]',
+            },
+        ],
+        name: 'aggregate',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'blockNumber',
+                type: 'uint256',
+            },
+            {
+                internalType: 'bytes[]',
+                name: 'returnData',
+                type: 'bytes[]',
+            },
+        ],
+        stateMutability: 'payable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                components: [
+                    {
+                        internalType: 'address',
+                        name: 'target',
+                        type: 'address',
+                    },
+                    {
+                        internalType: 'bool',
+                        name: 'allowFailure',
+                        type: 'bool',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'callData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Call3[]',
+                name: 'calls',
+                type: 'tuple[]',
+            },
+        ],
+        name: 'aggregate3',
+        outputs: [
+            {
+                components: [
+                    {
+                        internalType: 'bool',
+                        name: 'success',
+                        type: 'bool',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'returnData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Result[]',
+                name: 'returnData',
+                type: 'tuple[]',
+            },
+        ],
+        stateMutability: 'payable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                components: [
+                    {
+                        internalType: 'address',
+                        name: 'target',
+                        type: 'address',
+                    },
+                    {
+                        internalType: 'bool',
+                        name: 'allowFailure',
+                        type: 'bool',
+                    },
+                    {
+                        internalType: 'uint256',
+                        name: 'value',
+                        type: 'uint256',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'callData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Call3Value[]',
+                name: 'calls',
+                type: 'tuple[]',
+            },
+        ],
+        name: 'aggregate3Value',
+        outputs: [
+            {
+                components: [
+                    {
+                        internalType: 'bool',
+                        name: 'success',
+                        type: 'bool',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'returnData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Result[]',
+                name: 'returnData',
+                type: 'tuple[]',
+            },
+        ],
+        stateMutability: 'payable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                components: [
+                    {
+                        internalType: 'address',
+                        name: 'target',
+                        type: 'address',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'callData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Call[]',
+                name: 'calls',
+                type: 'tuple[]',
+            },
+        ],
+        name: 'blockAndAggregate',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'blockNumber',
+                type: 'uint256',
+            },
+            {
+                internalType: 'bytes32',
+                name: 'blockHash',
+                type: 'bytes32',
+            },
+            {
+                components: [
+                    {
+                        internalType: 'bool',
+                        name: 'success',
+                        type: 'bool',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'returnData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Result[]',
+                name: 'returnData',
+                type: 'tuple[]',
+            },
+        ],
+        stateMutability: 'payable',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'getBasefee',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'basefee',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'uint256',
+                name: 'blockNumber',
+                type: 'uint256',
+            },
+        ],
+        name: 'getBlockHash',
+        outputs: [
+            {
+                internalType: 'bytes32',
+                name: 'blockHash',
+                type: 'bytes32',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'getBlockNumber',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'blockNumber',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'getChainId',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'chainid',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'getCurrentBlockCoinbase',
+        outputs: [
+            {
+                internalType: 'address',
+                name: 'coinbase',
+                type: 'address',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'getCurrentBlockDifficulty',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'difficulty',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'getCurrentBlockGasLimit',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'gaslimit',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'getCurrentBlockTimestamp',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'timestamp',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'address',
+                name: 'addr',
+                type: 'address',
+            },
+        ],
+        name: 'getEthBalance',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'balance',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'getLastBlockHash',
+        outputs: [
+            {
+                internalType: 'bytes32',
+                name: 'blockHash',
+                type: 'bytes32',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'bool',
+                name: 'requireSuccess',
+                type: 'bool',
+            },
+            {
+                components: [
+                    {
+                        internalType: 'address',
+                        name: 'target',
+                        type: 'address',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'callData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Call[]',
+                name: 'calls',
+                type: 'tuple[]',
+            },
+        ],
+        name: 'tryAggregate',
+        outputs: [
+            {
+                components: [
+                    {
+                        internalType: 'bool',
+                        name: 'success',
+                        type: 'bool',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'returnData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Result[]',
+                name: 'returnData',
+                type: 'tuple[]',
+            },
+        ],
+        stateMutability: 'payable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'bool',
+                name: 'requireSuccess',
+                type: 'bool',
+            },
+            {
+                components: [
+                    {
+                        internalType: 'address',
+                        name: 'target',
+                        type: 'address',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'callData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Call[]',
+                name: 'calls',
+                type: 'tuple[]',
+            },
+        ],
+        name: 'tryBlockAndAggregate',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'blockNumber',
+                type: 'uint256',
+            },
+            {
+                internalType: 'bytes32',
+                name: 'blockHash',
+                type: 'bytes32',
+            },
+            {
+                components: [
+                    {
+                        internalType: 'bool',
+                        name: 'success',
+                        type: 'bool',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'returnData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall3.Result[]',
+                name: 'returnData',
+                type: 'tuple[]',
+            },
+        ],
+        stateMutability: 'payable',
+        type: 'function',
+    },
+];
+var MulticallAbi__factory = exports.MulticallAbi__factory = /** @class */ (function () {
+    function MulticallAbi__factory() {
+    }
+    MulticallAbi__factory.createInterface = function () {
+        return new ethers_1.utils.Interface(_abi);
+    };
+    MulticallAbi__factory.connect = function (address, signerOrProvider) {
+        return new ethers_1.Contract(address, _abi, signerOrProvider);
+    };
+    MulticallAbi__factory.abi = _abi;
+    return MulticallAbi__factory;
+}());
+//# sourceMappingURL=MulticallAbi__factory.js.map

lib/contracts/factories/OffchainOracleAbi__factory.d.ts

@@ -0,0 +1,265 @@
+import { Signer } from 'ethers';
+import type { Provider } from '@ethersproject/providers';
+import type { OffchainOracleAbi, OffchainOracleAbiInterface } from '../OffchainOracleAbi';
+export declare class OffchainOracleAbi__factory {
+    static readonly abi: readonly [{
+        readonly inputs: readonly [{
+            readonly internalType: "contract MultiWrapper";
+            readonly name: "_multiWrapper";
+            readonly type: "address";
+        }, {
+            readonly internalType: "contract IOracle[]";
+            readonly name: "existingOracles";
+            readonly type: "address[]";
+        }, {
+            readonly internalType: "enum OffchainOracle.OracleType[]";
+            readonly name: "oracleTypes";
+            readonly type: "uint8[]";
+        }, {
+            readonly internalType: "contract IERC20[]";
+            readonly name: "existingConnectors";
+            readonly type: "address[]";
+        }, {
+            readonly internalType: "contract IERC20";
+            readonly name: "wBase";
+            readonly type: "address";
+        }];
+        readonly stateMutability: "nonpayable";
+        readonly type: "constructor";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: false;
+            readonly internalType: "contract IERC20";
+            readonly name: "connector";
+            readonly type: "address";
+        }];
+        readonly name: "ConnectorAdded";
+        readonly type: "event";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: false;
+            readonly internalType: "contract IERC20";
+            readonly name: "connector";
+            readonly type: "address";
+        }];
+        readonly name: "ConnectorRemoved";
+        readonly type: "event";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: false;
+            readonly internalType: "contract MultiWrapper";
+            readonly name: "multiWrapper";
+            readonly type: "address";
+        }];
+        readonly name: "MultiWrapperUpdated";
+        readonly type: "event";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: false;
+            readonly internalType: "contract IOracle";
+            readonly name: "oracle";
+            readonly type: "address";
+        }, {
+            readonly indexed: false;
+            readonly internalType: "enum OffchainOracle.OracleType";
+            readonly name: "oracleType";
+            readonly type: "uint8";
+        }];
+        readonly name: "OracleAdded";
+        readonly type: "event";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: false;
+            readonly internalType: "contract IOracle";
+            readonly name: "oracle";
+            readonly type: "address";
+        }, {
+            readonly indexed: false;
+            readonly internalType: "enum OffchainOracle.OracleType";
+            readonly name: "oracleType";
+            readonly type: "uint8";
+        }];
+        readonly name: "OracleRemoved";
+        readonly type: "event";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: true;
+            readonly internalType: "address";
+            readonly name: "previousOwner";
+            readonly type: "address";
+        }, {
+            readonly indexed: true;
+            readonly internalType: "address";
+            readonly name: "newOwner";
+            readonly type: "address";
+        }];
+        readonly name: "OwnershipTransferred";
+        readonly type: "event";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "contract IERC20";
+            readonly name: "connector";
+            readonly type: "address";
+        }];
+        readonly name: "addConnector";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "contract IOracle";
+            readonly name: "oracle";
+            readonly type: "address";
+        }, {
+            readonly internalType: "enum OffchainOracle.OracleType";
+            readonly name: "oracleKind";
+            readonly type: "uint8";
+        }];
+        readonly name: "addOracle";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "connectors";
+        readonly outputs: readonly [{
+            readonly internalType: "contract IERC20[]";
+            readonly name: "allConnectors";
+            readonly type: "address[]";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "contract IERC20";
+            readonly name: "srcToken";
+            readonly type: "address";
+        }, {
+            readonly internalType: "contract IERC20";
+            readonly name: "dstToken";
+            readonly type: "address";
+        }, {
+            readonly internalType: "bool";
+            readonly name: "useWrappers";
+            readonly type: "bool";
+        }];
+        readonly name: "getRate";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "weightedRate";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "contract IERC20";
+            readonly name: "srcToken";
+            readonly type: "address";
+        }, {
+            readonly internalType: "bool";
+            readonly name: "useSrcWrappers";
+            readonly type: "bool";
+        }];
+        readonly name: "getRateToEth";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "weightedRate";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "multiWrapper";
+        readonly outputs: readonly [{
+            readonly internalType: "contract MultiWrapper";
+            readonly name: "";
+            readonly type: "address";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "oracles";
+        readonly outputs: readonly [{
+            readonly internalType: "contract IOracle[]";
+            readonly name: "allOracles";
+            readonly type: "address[]";
+        }, {
+            readonly internalType: "enum OffchainOracle.OracleType[]";
+            readonly name: "oracleTypes";
+            readonly type: "uint8[]";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "owner";
+        readonly outputs: readonly [{
+            readonly internalType: "address";
+            readonly name: "";
+            readonly type: "address";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "contract IERC20";
+            readonly name: "connector";
+            readonly type: "address";
+        }];
+        readonly name: "removeConnector";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "contract IOracle";
+            readonly name: "oracle";
+            readonly type: "address";
+        }, {
+            readonly internalType: "enum OffchainOracle.OracleType";
+            readonly name: "oracleKind";
+            readonly type: "uint8";
+        }];
+        readonly name: "removeOracle";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "renounceOwnership";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "contract MultiWrapper";
+            readonly name: "_multiWrapper";
+            readonly type: "address";
+        }];
+        readonly name: "setMultiWrapper";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "address";
+            readonly name: "newOwner";
+            readonly type: "address";
+        }];
+        readonly name: "transferOwnership";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }];
+    static createInterface(): OffchainOracleAbiInterface;
+    static connect(address: string, signerOrProvider: Signer | Provider): OffchainOracleAbi;
+}

lib/contracts/factories/OffchainOracleAbi__factory.js

@@ -0,0 +1,354 @@
+"use strict";
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.OffchainOracleAbi__factory = void 0;
+var ethers_1 = require("ethers");
+var _abi = [
+    {
+        inputs: [
+            {
+                internalType: 'contract MultiWrapper',
+                name: '_multiWrapper',
+                type: 'address',
+            },
+            {
+                internalType: 'contract IOracle[]',
+                name: 'existingOracles',
+                type: 'address[]',
+            },
+            {
+                internalType: 'enum OffchainOracle.OracleType[]',
+                name: 'oracleTypes',
+                type: 'uint8[]',
+            },
+            {
+                internalType: 'contract IERC20[]',
+                name: 'existingConnectors',
+                type: 'address[]',
+            },
+            {
+                internalType: 'contract IERC20',
+                name: 'wBase',
+                type: 'address',
+            },
+        ],
+        stateMutability: 'nonpayable',
+        type: 'constructor',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: false,
+                internalType: 'contract IERC20',
+                name: 'connector',
+                type: 'address',
+            },
+        ],
+        name: 'ConnectorAdded',
+        type: 'event',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: false,
+                internalType: 'contract IERC20',
+                name: 'connector',
+                type: 'address',
+            },
+        ],
+        name: 'ConnectorRemoved',
+        type: 'event',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: false,
+                internalType: 'contract MultiWrapper',
+                name: 'multiWrapper',
+                type: 'address',
+            },
+        ],
+        name: 'MultiWrapperUpdated',
+        type: 'event',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: false,
+                internalType: 'contract IOracle',
+                name: 'oracle',
+                type: 'address',
+            },
+            {
+                indexed: false,
+                internalType: 'enum OffchainOracle.OracleType',
+                name: 'oracleType',
+                type: 'uint8',
+            },
+        ],
+        name: 'OracleAdded',
+        type: 'event',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: false,
+                internalType: 'contract IOracle',
+                name: 'oracle',
+                type: 'address',
+            },
+            {
+                indexed: false,
+                internalType: 'enum OffchainOracle.OracleType',
+                name: 'oracleType',
+                type: 'uint8',
+            },
+        ],
+        name: 'OracleRemoved',
+        type: 'event',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: true,
+                internalType: 'address',
+                name: 'previousOwner',
+                type: 'address',
+            },
+            {
+                indexed: true,
+                internalType: 'address',
+                name: 'newOwner',
+                type: 'address',
+            },
+        ],
+        name: 'OwnershipTransferred',
+        type: 'event',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'contract IERC20',
+                name: 'connector',
+                type: 'address',
+            },
+        ],
+        name: 'addConnector',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'contract IOracle',
+                name: 'oracle',
+                type: 'address',
+            },
+            {
+                internalType: 'enum OffchainOracle.OracleType',
+                name: 'oracleKind',
+                type: 'uint8',
+            },
+        ],
+        name: 'addOracle',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'connectors',
+        outputs: [
+            {
+                internalType: 'contract IERC20[]',
+                name: 'allConnectors',
+                type: 'address[]',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'contract IERC20',
+                name: 'srcToken',
+                type: 'address',
+            },
+            {
+                internalType: 'contract IERC20',
+                name: 'dstToken',
+                type: 'address',
+            },
+            {
+                internalType: 'bool',
+                name: 'useWrappers',
+                type: 'bool',
+            },
+        ],
+        name: 'getRate',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'weightedRate',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'contract IERC20',
+                name: 'srcToken',
+                type: 'address',
+            },
+            {
+                internalType: 'bool',
+                name: 'useSrcWrappers',
+                type: 'bool',
+            },
+        ],
+        name: 'getRateToEth',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'weightedRate',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'multiWrapper',
+        outputs: [
+            {
+                internalType: 'contract MultiWrapper',
+                name: '',
+                type: 'address',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'oracles',
+        outputs: [
+            {
+                internalType: 'contract IOracle[]',
+                name: 'allOracles',
+                type: 'address[]',
+            },
+            {
+                internalType: 'enum OffchainOracle.OracleType[]',
+                name: 'oracleTypes',
+                type: 'uint8[]',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'owner',
+        outputs: [
+            {
+                internalType: 'address',
+                name: '',
+                type: 'address',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'contract IERC20',
+                name: 'connector',
+                type: 'address',
+            },
+        ],
+        name: 'removeConnector',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'contract IOracle',
+                name: 'oracle',
+                type: 'address',
+            },
+            {
+                internalType: 'enum OffchainOracle.OracleType',
+                name: 'oracleKind',
+                type: 'uint8',
+            },
+        ],
+        name: 'removeOracle',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'renounceOwnership',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'contract MultiWrapper',
+                name: '_multiWrapper',
+                type: 'address',
+            },
+        ],
+        name: 'setMultiWrapper',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'address',
+                name: 'newOwner',
+                type: 'address',
+            },
+        ],
+        name: 'transferOwnership',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+];
+var OffchainOracleAbi__factory = exports.OffchainOracleAbi__factory = /** @class */ (function () {
+    function OffchainOracleAbi__factory() {
+    }
+    OffchainOracleAbi__factory.createInterface = function () {
+        return new ethers_1.utils.Interface(_abi);
+    };
+    OffchainOracleAbi__factory.connect = function (address, signerOrProvider) {
+        return new ethers_1.Contract(address, _abi, signerOrProvider);
+    };
+    OffchainOracleAbi__factory.abi = _abi;
+    return OffchainOracleAbi__factory;
+}());
+//# sourceMappingURL=OffchainOracleAbi__factory.js.map

lib/contracts/factories/OptimismL1FeeOracleAbi__factory.d.ts

@@ -0,0 +1,235 @@
+import { Signer } from 'ethers';
+import type { Provider } from '@ethersproject/providers';
+import type { OptimismL1FeeOracleAbi, OptimismL1FeeOracleAbiInterface } from '../OptimismL1FeeOracleAbi';
+export declare class OptimismL1FeeOracleAbi__factory {
+    static readonly abi: readonly [{
+        readonly inputs: readonly [{
+            readonly internalType: "address";
+            readonly name: "_owner";
+            readonly type: "address";
+        }];
+        readonly stateMutability: "nonpayable";
+        readonly type: "constructor";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: false;
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly name: "DecimalsUpdated";
+        readonly type: "event";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: false;
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly name: "GasPriceUpdated";
+        readonly type: "event";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: false;
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly name: "L1BaseFeeUpdated";
+        readonly type: "event";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: false;
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly name: "OverheadUpdated";
+        readonly type: "event";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: true;
+            readonly internalType: "address";
+            readonly name: "previousOwner";
+            readonly type: "address";
+        }, {
+            readonly indexed: true;
+            readonly internalType: "address";
+            readonly name: "newOwner";
+            readonly type: "address";
+        }];
+        readonly name: "OwnershipTransferred";
+        readonly type: "event";
+    }, {
+        readonly anonymous: false;
+        readonly inputs: readonly [{
+            readonly indexed: false;
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly name: "ScalarUpdated";
+        readonly type: "event";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "decimals";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "gasPrice";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "bytes";
+            readonly name: "_data";
+            readonly type: "bytes";
+        }];
+        readonly name: "getL1Fee";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "bytes";
+            readonly name: "_data";
+            readonly type: "bytes";
+        }];
+        readonly name: "getL1GasUsed";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "l1BaseFee";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "overhead";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "owner";
+        readonly outputs: readonly [{
+            readonly internalType: "address";
+            readonly name: "";
+            readonly type: "address";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "renounceOwnership";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [];
+        readonly name: "scalar";
+        readonly outputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "";
+            readonly type: "uint256";
+        }];
+        readonly stateMutability: "view";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "_decimals";
+            readonly type: "uint256";
+        }];
+        readonly name: "setDecimals";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "_gasPrice";
+            readonly type: "uint256";
+        }];
+        readonly name: "setGasPrice";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "_baseFee";
+            readonly type: "uint256";
+        }];
+        readonly name: "setL1BaseFee";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "_overhead";
+            readonly type: "uint256";
+        }];
+        readonly name: "setOverhead";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "uint256";
+            readonly name: "_scalar";
+            readonly type: "uint256";
+        }];
+        readonly name: "setScalar";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }, {
+        readonly inputs: readonly [{
+            readonly internalType: "address";
+            readonly name: "newOwner";
+            readonly type: "address";
+        }];
+        readonly name: "transferOwnership";
+        readonly outputs: readonly [];
+        readonly stateMutability: "nonpayable";
+        readonly type: "function";
+    }];
+    static createInterface(): OptimismL1FeeOracleAbiInterface;
+    static connect(address: string, signerOrProvider: Signer | Provider): OptimismL1FeeOracleAbi;
+}

lib/contracts/factories/OptimismL1FeeOracleAbi__factory.js

@@ -0,0 +1,318 @@
+"use strict";
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.OptimismL1FeeOracleAbi__factory = void 0;
+var ethers_1 = require("ethers");
+var _abi = [
+    {
+        inputs: [
+            {
+                internalType: 'address',
+                name: '_owner',
+                type: 'address',
+            },
+        ],
+        stateMutability: 'nonpayable',
+        type: 'constructor',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: false,
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        name: 'DecimalsUpdated',
+        type: 'event',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: false,
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        name: 'GasPriceUpdated',
+        type: 'event',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: false,
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        name: 'L1BaseFeeUpdated',
+        type: 'event',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: false,
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        name: 'OverheadUpdated',
+        type: 'event',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: true,
+                internalType: 'address',
+                name: 'previousOwner',
+                type: 'address',
+            },
+            {
+                indexed: true,
+                internalType: 'address',
+                name: 'newOwner',
+                type: 'address',
+            },
+        ],
+        name: 'OwnershipTransferred',
+        type: 'event',
+    },
+    {
+        anonymous: false,
+        inputs: [
+            {
+                indexed: false,
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        name: 'ScalarUpdated',
+        type: 'event',
+    },
+    {
+        inputs: [],
+        name: 'decimals',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'gasPrice',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'bytes',
+                name: '_data',
+                type: 'bytes',
+            },
+        ],
+        name: 'getL1Fee',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'bytes',
+                name: '_data',
+                type: 'bytes',
+            },
+        ],
+        name: 'getL1GasUsed',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'l1BaseFee',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'overhead',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'owner',
+        outputs: [
+            {
+                internalType: 'address',
+                name: '',
+                type: 'address',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'renounceOwnership',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [],
+        name: 'scalar',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: '',
+                type: 'uint256',
+            },
+        ],
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'uint256',
+                name: '_decimals',
+                type: 'uint256',
+            },
+        ],
+        name: 'setDecimals',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'uint256',
+                name: '_gasPrice',
+                type: 'uint256',
+            },
+        ],
+        name: 'setGasPrice',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'uint256',
+                name: '_baseFee',
+                type: 'uint256',
+            },
+        ],
+        name: 'setL1BaseFee',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'uint256',
+                name: '_overhead',
+                type: 'uint256',
+            },
+        ],
+        name: 'setOverhead',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'uint256',
+                name: '_scalar',
+                type: 'uint256',
+            },
+        ],
+        name: 'setScalar',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+    {
+        inputs: [
+            {
+                internalType: 'address',
+                name: 'newOwner',
+                type: 'address',
+            },
+        ],
+        name: 'transferOwnership',
+        outputs: [],
+        stateMutability: 'nonpayable',
+        type: 'function',
+    },
+];
+var OptimismL1FeeOracleAbi__factory = exports.OptimismL1FeeOracleAbi__factory = /** @class */ (function () {
+    function OptimismL1FeeOracleAbi__factory() {
+    }
+    OptimismL1FeeOracleAbi__factory.createInterface = function () {
+        return new ethers_1.utils.Interface(_abi);
+    };
+    OptimismL1FeeOracleAbi__factory.connect = function (address, signerOrProvider) {
+        return new ethers_1.Contract(address, _abi, signerOrProvider);
+    };
+    OptimismL1FeeOracleAbi__factory.abi = _abi;
+    return OptimismL1FeeOracleAbi__factory;
+}());
+//# sourceMappingURL=OptimismL1FeeOracleAbi__factory.js.map

lib/contracts/factories/OptimismL1FeeOracleAbi__factory.js.map

@@ -0,0 +1 @@
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lib/contracts/factories/index.d.ts

@@ -0,0 +1,3 @@
+export { MulticallAbi__factory } from './MulticallAbi__factory';
+export { OffchainOracleAbi__factory } from './OffchainOracleAbi__factory';
+export { OptimismL1FeeOracleAbi__factory } from './OptimismL1FeeOracleAbi__factory';

lib/contracts/factories/index.js

@@ -0,0 +1,13 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.OptimismL1FeeOracleAbi__factory = exports.OffchainOracleAbi__factory = exports.MulticallAbi__factory = void 0;
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+var MulticallAbi__factory_1 = require("./MulticallAbi__factory");
+Object.defineProperty(exports, "MulticallAbi__factory", { enumerable: true, get: function () { return MulticallAbi__factory_1.MulticallAbi__factory; } });
+var OffchainOracleAbi__factory_1 = require("./OffchainOracleAbi__factory");
+Object.defineProperty(exports, "OffchainOracleAbi__factory", { enumerable: true, get: function () { return OffchainOracleAbi__factory_1.OffchainOracleAbi__factory; } });
+var OptimismL1FeeOracleAbi__factory_1 = require("./OptimismL1FeeOracleAbi__factory");
+Object.defineProperty(exports, "OptimismL1FeeOracleAbi__factory", { enumerable: true, get: function () { return OptimismL1FeeOracleAbi__factory_1.OptimismL1FeeOracleAbi__factory; } });
+//# sourceMappingURL=index.js.map

lib/contracts/factories/index.js.map

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lib/contracts/index.d.ts

@@ -0,0 +1,7 @@
+export type { MulticallAbi } from './MulticallAbi';
+export type { OffchainOracleAbi } from './OffchainOracleAbi';
+export type { OptimismL1FeeOracleAbi } from './OptimismL1FeeOracleAbi';
+export * as factories from './factories';
+export { MulticallAbi__factory } from './factories/MulticallAbi__factory';
+export { OffchainOracleAbi__factory } from './factories/OffchainOracleAbi__factory';
+export { OptimismL1FeeOracleAbi__factory } from './factories/OptimismL1FeeOracleAbi__factory';

lib/contracts/index.js

@@ -0,0 +1,34 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.OptimismL1FeeOracleAbi__factory = exports.OffchainOracleAbi__factory = exports.MulticallAbi__factory = exports.factories = void 0;
+exports.factories = __importStar(require("./factories"));
+var MulticallAbi__factory_1 = require("./factories/MulticallAbi__factory");
+Object.defineProperty(exports, "MulticallAbi__factory", { enumerable: true, get: function () { return MulticallAbi__factory_1.MulticallAbi__factory; } });
+var OffchainOracleAbi__factory_1 = require("./factories/OffchainOracleAbi__factory");
+Object.defineProperty(exports, "OffchainOracleAbi__factory", { enumerable: true, get: function () { return OffchainOracleAbi__factory_1.OffchainOracleAbi__factory; } });
+var OptimismL1FeeOracleAbi__factory_1 = require("./factories/OptimismL1FeeOracleAbi__factory");
+Object.defineProperty(exports, "OptimismL1FeeOracleAbi__factory", { enumerable: true, get: function () { return OptimismL1FeeOracleAbi__factory_1.OptimismL1FeeOracleAbi__factory; } });
+//# sourceMappingURL=index.js.map

lib/contracts/index.js.map

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+{"version":3,"file":"index.js","sourceRoot":"","sources":["../../src/contracts/index.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;AAMA,yDAAyC;AACzC,2EAA0E;AAAjE,8HAAA,qBAAqB,OAAA;AAC9B,qFAAoF;AAA3E,wIAAA,0BAA0B,OAAA;AACnC,+FAA8F;AAArF,kJAAA,+BAA+B,OAAA"}

lib/feeOracle.d.ts

@@ -0,0 +1,122 @@
+import { BigNumberish } from 'ethers';
+import { TransactionData, TxType, ITornadoFeeOracle, LegacyGasPriceKey, GasPriceParams, GetGasParamsRes, HexadecimalStringifiedNumber, GetGasInput, GetGasParamsInput } from './types';
+import { JsonRpcProvider } from '@ethersproject/providers';
+import { ChainId, InstanceTokenSymbol } from './config';
+import { GetWithdrawalFeeViaRelayerInput } from './types';
+export declare abstract class TornadoFeeOracle implements ITornadoFeeOracle {
+    version: 4 | 5 | 6;
+    protected chainId: ChainId;
+    protected provider: JsonRpcProvider;
+    constructor(version: 4 | 5 | 6, chainId: ChainId, rpcUrl: string);
+    /**
+     * Because Optimism transaction published on Mainnet, for each OP transaction we need to calculate L1 security fee:
+     * https://community.optimism.io/docs/developers/build/transaction-fees/#priority-fee
+     * @param {TransactionData} [tx] Transaction data to estimate L1 additional fee
+     * @returns {Promise<HexadecimalStringifiedNumber>} Fee in WEI (MATIC), '0' if chain is not Optimism
+     */
+    fetchL1OptimismFee(tx?: TransactionData): Promise<HexadecimalStringifiedNumber>;
+    /**
+     * Estimate gas price, gas limit and l1Fee for sidechain (if exists)
+     * @param {GetGasParamsInput} [params] Function input arguments object
+     * @param {TransactionData} [params.tx] Transaction data in web3 / ethers format
+     * @param {TxType} [params.txType=other] Tornado transaction type: withdrawal by user, withdrawal by relayer or 'other'
+     * @param {number} [params.predefinedGasLimit] Predefined gas limit, if already calculated (no refetching)
+     * @param {number} [params.predefinedGasPrice] Predefined gas price, if already calculated (no refetching)
+     * @param {number} [params.bumpGasLimitPercent] Gas limit bump percent to prioritize transaction (if gas limit not predefined, recenlty used)
+     * @param {number} [params.bumpGasPricePercent] Gas price bump percent to prioritize transaction (if gas limit not predefined, rarely used)
+     * @param {LegacyGasPriceKey} [params.speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
+     * @param {boolean} [params.includeL1FeeToGasLimit=true] Include L1 additional fee on Optimism to gas limit (get fee and divide by gas price)
+     * @returns {Promise<GetGasParamsRes>} Object with fields 'gasPrice' and 'gasLimit', L1 fee, if exists, included in gasLimit
+     */
+    getGasParams(params?: GetGasParamsInput): Promise<GetGasParamsRes>;
+    /**
+     * Estimates next block gas for signed, unsigned or incomplete Tornado transaction
+     * @param {GetGasInput} [params] Function input arguments object
+     * @param {TransactionData} [params.tx] Transaction data in web3 / ethers format
+     * @param {TxType} [params.txType] Tornado transaction type: withdrawal by user, withdrawal by relayer or 'other'
+     * @param {number} [params.predefinedGasLimit] Predefined gas limit, if already calculated (no refetching)
+     * @param {number} [params.predefinedGasPrice] Predefined gas price, if already calculated (no refetching)
+     * @param {number} [params.bumpGasLimitPercent] Gas limit bump percent to prioritize transaction (if gas limit not predefined, recenlty used)
+     * @param {number} [params.bumpGasPricePercent] Gas price bump percent to prioritize transaction (if gas price not predefined, rarely used)
+     * @param {LegacyGasPriceKey} [params.speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
+     * @returns {Promise<HexadecimalStringifiedNumber>} Gas value in WEI (hex-format)
+     */
+    getGas(params?: GetGasInput): Promise<HexadecimalStringifiedNumber>;
+    /**
+     * Estimate next block gas price
+     * @param {LegacyGasPriceKey} [speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
+     * @param {number} [bumpPercent=0] Gas bump percent to prioritize transaction
+     * @returns {Promise<GasPriceParams>} Estimated gas price info in WEI (hexed) - legacy object with gasPrice property or
+     * EIP-1559 object with maxFeePerGas and maxPriorityFeePerGas properties
+     * NOTICE: It is recommended to bump fees for EIP-1559 transactions, because they can bump 12.5% per block
+     */
+    getGasPriceParams(speed?: LegacyGasPriceKey, bumpPercent?: number): Promise<GasPriceParams>;
+    /**
+     * Estimate next block gas price
+     * @param {LegacyGasPriceKey} [speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
+     * @param {number} [bumpPercent] Gas bump percent to prioritize transaction
+     * @returns {Promise<HexadecimalStringifiedNumber>} Gas price in WEI (hex string)
+     */
+    getGasPrice(speed?: LegacyGasPriceKey, bumpPercent?: number): Promise<HexadecimalStringifiedNumber>;
+    /**
+     * Estimates gas limit for transaction (or basic gas limit, if no tx data provided)
+     * @param {TransactionData} [tx] Transaction data (object in web3 / ethers format)
+     * @param {TxType} [type] Tornado transaction type: withdrawal by user, withdrawal by relayer, relayer fee check or 'other'
+     * @param {number} [bumpPercent] Gas bump percent to prioritize transaction
+     * @returns {Promise<number>} Gas limit
+     */
+    abstract getGasLimit(tx?: TransactionData, type?: TxType, bumpPercent?: number): Promise<number>;
+    /**
+     * If user withdraw non-native tokens on ETH or Goerli, we need to calculate refund value:
+     * if the withdrawal is successful, this amount will be returned to the user after the transfer to the relayer,
+     * and if the relayer pays a commission and the transfer of tokens fails, this commission will remain to the relayer.
+     *
+     * Refund needed that recipient can use tokens after withdrawal (covers gas fee for send/swap)
+     * @param {BigNumberish} gasPrice Actual gas price
+     * @param {InstanceTokenSymbol} tokenSymbol Withdrawal token (currency) symbol - for example, 'dai'
+     * @returns {HexadecimalStringifiedNumber} Refund amount in WEI (in hex format)
+     */
+    calculateRefundInETH(gasPrice: BigNumberish, tokenSymbol: InstanceTokenSymbol): HexadecimalStringifiedNumber;
+    /**
+     * Fetched actual gas price and calculates refund amount
+     * @param {InstanceTokenSymbol} tokenSymbol Withdrawal token (currency) symbol - for example, 'dai'
+     * @returns {Promise<HexadecimalStringifiedNumber>} Refund amount in WEI (in hex format)
+     */
+    fetchRefundInETH(tokenSymbol: InstanceTokenSymbol): Promise<HexadecimalStringifiedNumber>;
+    /**
+     * Get refund amount on ETH or Goerli in non-native token
+     * @param {BigNumberish} gasPrice Actual gas price in ETH
+     * @param {BigNumberish} tokenPriceInEth Token price in WEI in ETH
+     * @param {HexadecimalStringifiedNumber | number} tokenDecimals Token (currency) decimals
+     * @param {InstanceTokenSymbol} tokenSymbol Withdrawal token (currency) symbol - for example, 'dai'
+     * @returns {HexadecimalStringifiedNumber} Refund amount in WEI in selected token (hexed number)
+     */
+    calculateRefundInToken(gasPrice: BigNumberish, tokenPriceInEth: BigNumberish, tokenDecimals: HexadecimalStringifiedNumber | number, tokenSymbol: InstanceTokenSymbol): HexadecimalStringifiedNumber;
+    /**
+     * Calculates relayer fee in selected currency (ETH, DAI, BNB etc) in WEI
+     * @param {number | string} relayerFeePercent Relayer percent (0.4 for ETH Mainnet, for example)
+     * @param {HexadecimalStringifiedNumber | number} amount Amount in selected currency (10 for 10 ETH, 1000 for 1000 DAI)
+     * @param {string | number} decimals Decimal places in selected token (currency)
+     * @returns {HexadecimalStringifiedNumber} Fee in WEI (hexed stingified number)
+     */
+    calculateRelayerFeeInWei(relayerFeePercent: number | string, amount: HexadecimalStringifiedNumber | number, decimals: string | number): HexadecimalStringifiedNumber;
+    /**
+     * Estimates fee for withdrawal via relayer depending on type: gas bump percent is bigger, if it calculates by user,
+     * so that the real commission from the relayer side is a little less,
+     * in order to the relayer can send a transaction without fear that he will go into the red
+     * @param {GetWithdrawalFeeViaRelayerInput} params Function input arguments object
+     * @param {TxType} params.txType Tornado transaction type: withdrawal costs calculation from user side or from relayer side
+     * @param {TransactionData} [params.tx] Transaction data (object in web3 / ethers format)
+     * @param {number} params.relayerFeePercent Relayer fee percent from the transaction amount (for example, 0.15 for BNB or 0.4 for ETH Mainnet)
+     * @param {AvailableTokenSymbols | Uppercase<AvailableTokenSymbols>} params.currency Currency symbol
+     * @param {number | HexadecimalStringifiedNumber } params.amount Withdrawal amount in selected currency
+     * @param {number | HexadecimalStringifiedNumber } params.decimals Token (currency) decimals
+     * @param {BigNumberish} [params.refundInEth] Refund in ETH, if withdrawed other tokens on Mainnet (not ETH). Can not be provided, if user-side calculation
+     * @param {BigNumberish} [params.tokenPriceInEth] If withdrawing other token on Mainnet or Goerli, need to provide token price in ETH (in WEI)
+     * @param {number} [params.gasLimit] Predefined gas limit, if already calculated (no refetching)
+     * @param {number} [params.gasPrice] Predefined gas price, if already calculated (no refetching)
+     *
+     * @returns {Promise<HexadecimalStringifiedNumber>} Fee in WEI (hexed string)
+     */
+    calculateWithdrawalFeeViaRelayer({ tx, txType, relayerFeePercent, currency, amount, decimals, refundInEth, tokenPriceInEth, predefinedGasLimit, predefinedGasPrice, }: GetWithdrawalFeeViaRelayerInput): Promise<HexadecimalStringifiedNumber>;
+}

lib/feeOracle.js

@@ -0,0 +1,374 @@
+"use strict";
+var __assign = (this && this.__assign) || function () {
+    __assign = Object.assign || function(t) {
+        for (var s, i = 1, n = arguments.length; i < n; i++) {
+            s = arguments[i];
+            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
+                t[p] = s[p];
+        }
+        return t;
+    };
+    return __assign.apply(this, arguments);
+};
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __generator = (this && this.__generator) || function (thisArg, body) {
+    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+    function verb(n) { return function (v) { return step([n, v]); }; }
+    function step(op) {
+        if (f) throw new TypeError("Generator is already executing.");
+        while (g && (g = 0, op[0] && (_ = 0)), _) try {
+            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+            if (y = 0, t) op = [op[0] & 2, t.value];
+            switch (op[0]) {
+                case 0: case 1: t = op; break;
+                case 4: _.label++; return { value: op[1], done: false };
+                case 5: _.label++; y = op[1]; op = [0]; continue;
+                case 7: op = _.ops.pop(); _.trys.pop(); continue;
+                default:
+                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                    if (t[2]) _.ops.pop();
+                    _.trys.pop(); continue;
+            }
+            op = body.call(thisArg, _);
+        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+    }
+};
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.TornadoFeeOracle = void 0;
+var ethers_1 = require("ethers");
+var bignumber_js_1 = __importDefault(require("bignumber.js"));
+var utils_1 = require("ethers/lib/utils");
+var config_1 = require("./config");
+var utils_2 = require("./utils");
+var factories_1 = require("./contracts/factories");
+var TornadoFeeOracle = /** @class */ (function () {
+    function TornadoFeeOracle(version, chainId, rpcUrl) {
+        this.version = version;
+        this.chainId = chainId;
+        this.provider = new ethers_1.ethers.providers.JsonRpcProvider(rpcUrl);
+    }
+    /**
+     * Because Optimism transaction published on Mainnet, for each OP transaction we need to calculate L1 security fee:
+     * https://community.optimism.io/docs/developers/build/transaction-fees/#priority-fee
+     * @param {TransactionData} [tx] Transaction data to estimate L1 additional fee
+     * @returns {Promise<HexadecimalStringifiedNumber>} Fee in WEI (MATIC), '0' if chain is not Optimism
+     */
+    TornadoFeeOracle.prototype.fetchL1OptimismFee = function (tx) {
+        return __awaiter(this, void 0, void 0, function () {
+            var optimismL1FeeOracle, l1Fee;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        if (this.chainId != config_1.ChainId.OPTIMISM)
+                            return [2 /*return*/, ethers_1.BigNumber.from(0).toHexString()];
+                        optimismL1FeeOracle = (0, factories_1.getOptimismL1FeeOracle)(this.provider);
+                        return [4 /*yield*/, optimismL1FeeOracle.getL1Fee((0, utils_2.serializeTx)(tx))];
+                    case 1:
+                        l1Fee = _a.sent();
+                        return [2 /*return*/, l1Fee.toHexString()];
+                }
+            });
+        });
+    };
+    /**
+     * Estimate gas price, gas limit and l1Fee for sidechain (if exists)
+     * @param {GetGasParamsInput} [params] Function input arguments object
+     * @param {TransactionData} [params.tx] Transaction data in web3 / ethers format
+     * @param {TxType} [params.txType=other] Tornado transaction type: withdrawal by user, withdrawal by relayer or 'other'
+     * @param {number} [params.predefinedGasLimit] Predefined gas limit, if already calculated (no refetching)
+     * @param {number} [params.predefinedGasPrice] Predefined gas price, if already calculated (no refetching)
+     * @param {number} [params.bumpGasLimitPercent] Gas limit bump percent to prioritize transaction (if gas limit not predefined, recenlty used)
+     * @param {number} [params.bumpGasPricePercent] Gas price bump percent to prioritize transaction (if gas limit not predefined, rarely used)
+     * @param {LegacyGasPriceKey} [params.speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
+     * @param {boolean} [params.includeL1FeeToGasLimit=true] Include L1 additional fee on Optimism to gas limit (get fee and divide by gas price)
+     * @returns {Promise<GetGasParamsRes>} Object with fields 'gasPrice' and 'gasLimit', L1 fee, if exists, included in gasLimit
+     */
+    TornadoFeeOracle.prototype.getGasParams = function (params) {
+        if (params === void 0) { params = {}; }
+        return __awaiter(this, void 0, void 0, function () {
+            var tx, _a, txType, bumpGasLimitPercent, bumpGasPricePercent, gasLimit, gasPrice, speed, _b, includeL1FeeToGasLimit, l1Fee;
+            var _c, _d;
+            return __generator(this, function (_e) {
+                switch (_e.label) {
+                    case 0:
+                        tx = params.tx, _a = params.txType, txType = _a === void 0 ? 'other' : _a, bumpGasLimitPercent = params.bumpGasLimitPercent, bumpGasPricePercent = params.bumpGasPricePercent, gasLimit = params.predefinedGasLimit, gasPrice = params.predefinedGasPrice, speed = params.speed, _b = params.includeL1FeeToGasLimit, includeL1FeeToGasLimit = _b === void 0 ? true : _b;
+                        l1Fee = '0';
+                        if (!(!gasLimit && !gasPrice)) return [3 /*break*/, 2];
+                        return [4 /*yield*/, Promise.all([
+                                this.getGasPrice(speed, bumpGasPricePercent),
+                                this.getGasLimit(tx, txType, bumpGasLimitPercent),
+                                this.fetchL1OptimismFee(tx),
+                            ])];
+                    case 1:
+                        _c = _e.sent(), gasPrice = _c[0], gasLimit = _c[1], l1Fee = _c[2];
+                        _e.label = 2;
+                    case 2:
+                        if (!!gasLimit) return [3 /*break*/, 4];
+                        return [4 /*yield*/, Promise.all([
+                                this.getGasLimit(tx, txType, bumpGasLimitPercent),
+                                this.fetchL1OptimismFee(tx),
+                            ])];
+                    case 3:
+                        _d = _e.sent(), gasLimit = _d[0], l1Fee = _d[1];
+                        _e.label = 4;
+                    case 4:
+                        if (!!gasPrice) return [3 /*break*/, 6];
+                        return [4 /*yield*/, this.getGasPrice(speed, bumpGasPricePercent)];
+                    case 5:
+                        gasPrice = _e.sent();
+                        _e.label = 6;
+                    case 6:
+                        if (includeL1FeeToGasLimit)
+                            // Include L1 fee in gas limit (divide by gas price before), if l1 fee is 0, gas limit wont change
+                            gasLimit = (0, bignumber_js_1.default)(gasLimit)
+                                .plus((0, bignumber_js_1.default)(l1Fee).div((0, bignumber_js_1.default)(gasPrice)))
+                                .decimalPlaces(0, 1)
+                                .toNumber();
+                        return [2 /*return*/, { gasLimit: gasLimit, gasPrice: gasPrice }];
+                }
+            });
+        });
+    };
+    /**
+     * Estimates next block gas for signed, unsigned or incomplete Tornado transaction
+     * @param {GetGasInput} [params] Function input arguments object
+     * @param {TransactionData} [params.tx] Transaction data in web3 / ethers format
+     * @param {TxType} [params.txType] Tornado transaction type: withdrawal by user, withdrawal by relayer or 'other'
+     * @param {number} [params.predefinedGasLimit] Predefined gas limit, if already calculated (no refetching)
+     * @param {number} [params.predefinedGasPrice] Predefined gas price, if already calculated (no refetching)
+     * @param {number} [params.bumpGasLimitPercent] Gas limit bump percent to prioritize transaction (if gas limit not predefined, recenlty used)
+     * @param {number} [params.bumpGasPricePercent] Gas price bump percent to prioritize transaction (if gas price not predefined, rarely used)
+     * @param {LegacyGasPriceKey} [params.speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
+     * @returns {Promise<HexadecimalStringifiedNumber>} Gas value in WEI (hex-format)
+     */
+    TornadoFeeOracle.prototype.getGas = function (params) {
+        if (params === void 0) { params = {}; }
+        return __awaiter(this, void 0, void 0, function () {
+            var _a, gasPrice, gasLimit;
+            return __generator(this, function (_b) {
+                switch (_b.label) {
+                    case 0: return [4 /*yield*/, this.getGasParams(__assign(__assign({}, params), { includeL1FeeToGasLimit: true }))];
+                    case 1:
+                        _a = _b.sent(), gasPrice = _a.gasPrice, gasLimit = _a.gasLimit;
+                        return [2 /*return*/, ethers_1.BigNumber.from(gasPrice).mul(gasLimit).toHexString()];
+                }
+            });
+        });
+    };
+    /**
+     * Estimate next block gas price
+     * @param {LegacyGasPriceKey} [speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
+     * @param {number} [bumpPercent=0] Gas bump percent to prioritize transaction
+     * @returns {Promise<GasPriceParams>} Estimated gas price info in WEI (hexed) - legacy object with gasPrice property or
+     * EIP-1559 object with maxFeePerGas and maxPriorityFeePerGas properties
+     * NOTICE: It is recommended to bump fees for EIP-1559 transactions, because they can bump 12.5% per block
+     */
+    TornadoFeeOracle.prototype.getGasPriceParams = function (speed, bumpPercent) {
+        var _a;
+        if (bumpPercent === void 0) { bumpPercent = 0; }
+        return __awaiter(this, void 0, void 0, function () {
+            var _b, block, gasPrice, priorityFee, maxPriorityFeePerGas, maxFeePerGas, e_1;
+            var _this = this;
+            return __generator(this, function (_c) {
+                switch (_c.label) {
+                    case 0:
+                        // Use instant for BSC, because on this chain "fast" and "instant" differs more than third and "fast" transaction can take hours
+                        if (!speed)
+                            speed = this.chainId === config_1.ChainId.BSC ? 'instant' : 'fast';
+                        _c.label = 1;
+                    case 1:
+                        _c.trys.push([1, 3, , 4]);
+                        return [4 /*yield*/, Promise.all([
+                                this.provider.getBlock('latest'),
+                                this.provider.getGasPrice(),
+                                (function () { return __awaiter(_this, void 0, void 0, function () {
+                                    var _a, _b, _c;
+                                    return __generator(this, function (_d) {
+                                        switch (_d.label) {
+                                            case 0:
+                                                _d.trys.push([0, 2, , 3]);
+                                                _b = (_a = ethers_1.BigNumber).from;
+                                                return [4 /*yield*/, this.provider.send('eth_maxPriorityFeePerGas', [])];
+                                            case 1: return [2 /*return*/, _b.apply(_a, [(_d.sent()) || (0, utils_1.parseUnits)('1.5', 'gwei')])];
+                                            case 2:
+                                                _c = _d.sent();
+                                                return [2 /*return*/, (0, utils_1.parseUnits)('1.5', 'gwei')];
+                                            case 3: return [2 /*return*/];
+                                        }
+                                    });
+                                }); })(),
+                            ])];
+                    case 2:
+                        _b = _c.sent(), block = _b[0], gasPrice = _b[1], priorityFee = _b[2];
+                        if ((_a = block === null || block === void 0 ? void 0 : block.baseFeePerGas) === null || _a === void 0 ? void 0 : _a.gt(0)) {
+                            maxPriorityFeePerGas = priorityFee.toHexString();
+                            maxFeePerGas = (0, utils_2.bump)(block.baseFeePerGas, bumpPercent)
+                                .add(priorityFee)
+                                .toHexString();
+                            return [2 /*return*/, {
+                                    maxFeePerGas: maxFeePerGas,
+                                    maxPriorityFeePerGas: maxPriorityFeePerGas,
+                                }];
+                        }
+                        return [2 /*return*/, {
+                                gasPrice: (0, utils_2.bump)(gasPrice, bumpPercent).toHexString(),
+                            }];
+                    case 3:
+                        e_1 = _c.sent();
+                        return [2 /*return*/, { gasPrice: (0, utils_2.bump)((0, utils_2.fromGweiToWeiHex)(config_1.defaultGasPrices[this.chainId][speed]), bumpPercent).toHexString() }];
+                    case 4: return [2 /*return*/];
+                }
+            });
+        });
+    };
+    /**
+     * Estimate next block gas price
+     * @param {LegacyGasPriceKey} [speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
+     * @param {number} [bumpPercent] Gas bump percent to prioritize transaction
+     * @returns {Promise<HexadecimalStringifiedNumber>} Gas price in WEI (hex string)
+     */
+    TornadoFeeOracle.prototype.getGasPrice = function (speed, bumpPercent) {
+        return __awaiter(this, void 0, void 0, function () {
+            var gasPriceParams;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0: return [4 /*yield*/, this.getGasPriceParams(speed, bumpPercent)];
+                    case 1:
+                        gasPriceParams = _a.sent();
+                        return [2 /*return*/, (0, utils_2.calculateGasPriceInWei)(gasPriceParams).toHexString()];
+                }
+            });
+        });
+    };
+    /**
+     * If user withdraw non-native tokens on ETH or Goerli, we need to calculate refund value:
+     * if the withdrawal is successful, this amount will be returned to the user after the transfer to the relayer,
+     * and if the relayer pays a commission and the transfer of tokens fails, this commission will remain to the relayer.
+     *
+     * Refund needed that recipient can use tokens after withdrawal (covers gas fee for send/swap)
+     * @param {BigNumberish} gasPrice Actual gas price
+     * @param {InstanceTokenSymbol} tokenSymbol Withdrawal token (currency) symbol - for example, 'dai'
+     * @returns {HexadecimalStringifiedNumber} Refund amount in WEI (in hex format)
+     */
+    TornadoFeeOracle.prototype.calculateRefundInETH = function (gasPrice, tokenSymbol) {
+        // Refund only available for non-native tokens on Ethereum Mainnet and Goerli
+        if (![config_1.ChainId.MAINNET, config_1.ChainId.GOERLI].includes(this.chainId) || tokenSymbol === 'eth')
+            return '0';
+        // Notify user about error if incorrect token symbol provided
+        if (!Object.values(config_1.InstanceTokenSymbol).includes(tokenSymbol)) {
+            console.error("Invalid token symbol: ".concat(tokenSymbol, ", must be lowercase token from one of Tornado ETH Mainnet pools"));
+            return '0';
+        }
+        // In Tornado we need to calculate refund only on user side, relayer get refund value in proof
+        var gasLimit = config_1.defaultInstanceTokensGasLimit[tokenSymbol];
+        return ethers_1.BigNumber.from(gasPrice).mul(gasLimit).mul(2).toHexString();
+    };
+    /**
+     * Fetched actual gas price and calculates refund amount
+     * @param {InstanceTokenSymbol} tokenSymbol Withdrawal token (currency) symbol - for example, 'dai'
+     * @returns {Promise<HexadecimalStringifiedNumber>} Refund amount in WEI (in hex format)
+     */
+    TornadoFeeOracle.prototype.fetchRefundInETH = function (tokenSymbol) {
+        return __awaiter(this, void 0, void 0, function () {
+            var gasPrice;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0: return [4 /*yield*/, this.getGasPrice()];
+                    case 1:
+                        gasPrice = _a.sent();
+                        return [2 /*return*/, this.calculateRefundInETH(gasPrice, tokenSymbol)];
+                }
+            });
+        });
+    };
+    /**
+     * Get refund amount on ETH or Goerli in non-native token
+     * @param {BigNumberish} gasPrice Actual gas price in ETH
+     * @param {BigNumberish} tokenPriceInEth Token price in WEI in ETH
+     * @param {HexadecimalStringifiedNumber | number} tokenDecimals Token (currency) decimals
+     * @param {InstanceTokenSymbol} tokenSymbol Withdrawal token (currency) symbol - for example, 'dai'
+     * @returns {HexadecimalStringifiedNumber} Refund amount in WEI in selected token (hexed number)
+     */
+    TornadoFeeOracle.prototype.calculateRefundInToken = function (gasPrice, tokenPriceInEth, tokenDecimals, tokenSymbol) {
+        var refundInEth = this.calculateRefundInETH(gasPrice, tokenSymbol);
+        return (0, utils_2.convertETHToToken)(refundInEth, tokenDecimals, tokenPriceInEth).toHexString();
+    };
+    /**
+     * Calculates relayer fee in selected currency (ETH, DAI, BNB etc) in WEI
+     * @param {number | string} relayerFeePercent Relayer percent (0.4 for ETH Mainnet, for example)
+     * @param {HexadecimalStringifiedNumber | number} amount Amount in selected currency (10 for 10 ETH, 1000 for 1000 DAI)
+     * @param {string | number} decimals Decimal places in selected token (currency)
+     * @returns {HexadecimalStringifiedNumber} Fee in WEI (hexed stingified number)
+     */
+    TornadoFeeOracle.prototype.calculateRelayerFeeInWei = function (relayerFeePercent, amount, decimals) {
+        return (0, utils_1.parseUnits)(amount.toString(), decimals)
+            .mul("".concat(Math.floor(Number(relayerFeePercent) * 1e10)))
+            .div("".concat(100 * 1e10))
+            .toHexString();
+    };
+    /**
+     * Estimates fee for withdrawal via relayer depending on type: gas bump percent is bigger, if it calculates by user,
+     * so that the real commission from the relayer side is a little less,
+     * in order to the relayer can send a transaction without fear that he will go into the red
+     * @param {GetWithdrawalFeeViaRelayerInput} params Function input arguments object
+     * @param {TxType} params.txType Tornado transaction type: withdrawal costs calculation from user side or from relayer side
+     * @param {TransactionData} [params.tx] Transaction data (object in web3 / ethers format)
+     * @param {number} params.relayerFeePercent Relayer fee percent from the transaction amount (for example, 0.15 for BNB or 0.4 for ETH Mainnet)
+     * @param {AvailableTokenSymbols | Uppercase<AvailableTokenSymbols>} params.currency Currency symbol
+     * @param {number | HexadecimalStringifiedNumber } params.amount Withdrawal amount in selected currency
+     * @param {number | HexadecimalStringifiedNumber } params.decimals Token (currency) decimals
+     * @param {BigNumberish} [params.refundInEth] Refund in ETH, if withdrawed other tokens on Mainnet (not ETH). Can not be provided, if user-side calculation
+     * @param {BigNumberish} [params.tokenPriceInEth] If withdrawing other token on Mainnet or Goerli, need to provide token price in ETH (in WEI)
+     * @param {number} [params.gasLimit] Predefined gas limit, if already calculated (no refetching)
+     * @param {number} [params.gasPrice] Predefined gas price, if already calculated (no refetching)
+     *
+     * @returns {Promise<HexadecimalStringifiedNumber>} Fee in WEI (hexed string)
+     */
+    TornadoFeeOracle.prototype.calculateWithdrawalFeeViaRelayer = function (_a) {
+        var tx = _a.tx, txType = _a.txType, relayerFeePercent = _a.relayerFeePercent, currency = _a.currency, amount = _a.amount, decimals = _a.decimals, refundInEth = _a.refundInEth, tokenPriceInEth = _a.tokenPriceInEth, predefinedGasLimit = _a.predefinedGasLimit, predefinedGasPrice = _a.predefinedGasPrice;
+        return __awaiter(this, void 0, void 0, function () {
+            var relayerFee, _b, gasPrice, gasLimit, gasCosts, hasTokenPrice, feeInEth;
+            return __generator(this, function (_c) {
+                switch (_c.label) {
+                    case 0:
+                        relayerFee = this.calculateRelayerFeeInWei(relayerFeePercent, amount, decimals);
+                        return [4 /*yield*/, this.getGasParams({ tx: tx, txType: txType, predefinedGasLimit: predefinedGasLimit, predefinedGasPrice: predefinedGasPrice })];
+                    case 1:
+                        _b = _c.sent(), gasPrice = _b.gasPrice, gasLimit = _b.gasLimit;
+                        gasCosts = ethers_1.BigNumber.from(gasPrice).mul(gasLimit);
+                        hasTokenPrice = typeof tokenPriceInEth === 'object' && typeof (tokenPriceInEth === null || tokenPriceInEth === void 0 ? void 0 : tokenPriceInEth.gt) === 'function'
+                            ? Boolean(tokenPriceInEth.gt(0))
+                            : Boolean(tokenPriceInEth);
+                        if (hasTokenPrice) {
+                            if (txType === 'user_withdrawal' && refundInEth === undefined)
+                                refundInEth = this.calculateRefundInETH(gasPrice, currency.toLowerCase());
+                            feeInEth = ethers_1.BigNumber.from(gasCosts).add(refundInEth || 0);
+                            return [2 /*return*/, (0, utils_2.convertETHToToken)(feeInEth, decimals, tokenPriceInEth)
+                                    .add(relayerFee)
+                                    .toHexString()];
+                        }
+                        return [2 /*return*/, ethers_1.BigNumber.from(gasCosts).add(relayerFee).toHexString()];
+                }
+            });
+        });
+    };
+    return TornadoFeeOracle;
+}());
+exports.TornadoFeeOracle = TornadoFeeOracle;
+//# sourceMappingURL=feeOracle.js.map

lib/feeOracleV4.d.ts

@@ -0,0 +1,9 @@
+import { TornadoFeeOracle } from './feeOracle';
+import { ITornadoFeeOracle, TransactionData, TxType } from './types';
+/**
+ * Oracle for V4 (old-version) transactions - estimates fee with predefined gas limit and without smart bumping
+ */
+export declare class TornadoFeeOracleV4 extends TornadoFeeOracle implements ITornadoFeeOracle {
+    constructor(chainId: number, rpcUrl: string);
+    getGasLimit(tx?: TransactionData, type?: TxType, bumpPercent?: number): Promise<number>;
+}

lib/feeOracleV4.js

@@ -0,0 +1,96 @@
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+    var extendStatics = function (d, b) {
+        extendStatics = Object.setPrototypeOf ||
+            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+        return extendStatics(d, b);
+    };
+    return function (d, b) {
+        if (typeof b !== "function" && b !== null)
+            throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+})();
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __generator = (this && this.__generator) || function (thisArg, body) {
+    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+    function verb(n) { return function (v) { return step([n, v]); }; }
+    function step(op) {
+        if (f) throw new TypeError("Generator is already executing.");
+        while (g && (g = 0, op[0] && (_ = 0)), _) try {
+            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+            if (y = 0, t) op = [op[0] & 2, t.value];
+            switch (op[0]) {
+                case 0: case 1: t = op; break;
+                case 4: _.label++; return { value: op[1], done: false };
+                case 5: _.label++; y = op[1]; op = [0]; continue;
+                case 7: op = _.ops.pop(); _.trys.pop(); continue;
+                default:
+                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                    if (t[2]) _.ops.pop();
+                    _.trys.pop(); continue;
+            }
+            op = body.call(thisArg, _);
+        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+    }
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.TornadoFeeOracleV4 = void 0;
+var config_1 = require("./config");
+var feeOracle_1 = require("./feeOracle");
+var utils_1 = require("./utils");
+/**
+ * Oracle for V4 (old-version) transactions - estimates fee with predefined gas limit and without smart bumping
+ */
+var TornadoFeeOracleV4 = /** @class */ (function (_super) {
+    __extends(TornadoFeeOracleV4, _super);
+    function TornadoFeeOracleV4(chainId, rpcUrl) {
+        return _super.call(this, 4, chainId, rpcUrl) || this;
+    }
+    TornadoFeeOracleV4.prototype.getGasLimit = function (tx, type, bumpPercent) {
+        if (type === void 0) { type = 'other'; }
+        if (bumpPercent === void 0) { bumpPercent = 0; }
+        return __awaiter(this, void 0, void 0, function () {
+            var _a;
+            return __generator(this, function (_b) {
+                switch (_b.label) {
+                    case 0:
+                        if (type === 'user_withdrawal')
+                            return [2 /*return*/, (0, utils_1.bump)(config_1.defaultWithdrawalGasLimit[this.chainId], bumpPercent).toNumber()];
+                        // Need to bump relayer gas limit for transaction, because predefined gas limit to small to be 100% sure that transaction will be sent
+                        // This leads to fact that relayer often pays extra for gas from his own funds, however, this was designed by previous developers
+                        if (type === 'relayer_withdrawal')
+                            return [2 /*return*/, (0, utils_1.bump)(config_1.defaultWithdrawalGasLimit[this.chainId], bumpPercent || 25).toNumber()];
+                        // For compatibility reasons, when wee check user-provided fee for V4 withdrawal transaction, we need dump gas limit
+                        // for about 20 percent,so that the transaction will be sent, even if it results in some loss for the relayer
+                        if (type === 'relayer_withdrawal_check_v4')
+                            return [2 /*return*/, (0, utils_1.bump)(config_1.defaultWithdrawalGasLimit[this.chainId], -25).toNumber()];
+                        if (!tx || Object.keys(tx).length === 0)
+                            return [2 /*return*/, (0, utils_1.bump)(23000, bumpPercent).toNumber()];
+                        _a = utils_1.bump;
+                        return [4 /*yield*/, this.provider.estimateGas(tx)];
+                    case 1: return [2 /*return*/, _a.apply(void 0, [_b.sent(), bumpPercent]).toNumber()];
+                }
+            });
+        });
+    };
+    return TornadoFeeOracleV4;
+}(feeOracle_1.TornadoFeeOracle));
+exports.TornadoFeeOracleV4 = TornadoFeeOracleV4;
+//# sourceMappingURL=feeOracleV4.js.map

lib/feeOracleV4.js.map

@@ -0,0 +1 @@
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lib/feeOracleV5.d.ts

@@ -0,0 +1,11 @@
+import { TornadoFeeOracle } from './feeOracle';
+import { ITornadoFeeOracle, TransactionData, TxType, LegacyGasPriceKey, GasPriceParams } from './types';
+/**
+ * Oracle for new V5 version - estimates transaction fees with smart gas limit & bumping
+ */
+export declare class TornadoFeeOracleV5 extends TornadoFeeOracle implements ITornadoFeeOracle {
+    private fallbackFeeOracle;
+    constructor(chainId: number, rpcUrl: string);
+    getGasLimit(tx?: TransactionData, type?: TxType, bumpPercent?: number): Promise<number>;
+    getGasPriceParams(speed?: LegacyGasPriceKey, bumpPercent?: number): Promise<GasPriceParams>;
+}

lib/feeOracleV5.js

@@ -0,0 +1,127 @@
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+    var extendStatics = function (d, b) {
+        extendStatics = Object.setPrototypeOf ||
+            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+        return extendStatics(d, b);
+    };
+    return function (d, b) {
+        if (typeof b !== "function" && b !== null)
+            throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+})();
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __generator = (this && this.__generator) || function (thisArg, body) {
+    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+    function verb(n) { return function (v) { return step([n, v]); }; }
+    function step(op) {
+        if (f) throw new TypeError("Generator is already executing.");
+        while (g && (g = 0, op[0] && (_ = 0)), _) try {
+            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+            if (y = 0, t) op = [op[0] & 2, t.value];
+            switch (op[0]) {
+                case 0: case 1: t = op; break;
+                case 4: _.label++; return { value: op[1], done: false };
+                case 5: _.label++; y = op[1]; op = [0]; continue;
+                case 7: op = _.ops.pop(); _.trys.pop(); continue;
+                default:
+                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                    if (t[2]) _.ops.pop();
+                    _.trys.pop(); continue;
+            }
+            op = body.call(thisArg, _);
+        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+    }
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.TornadoFeeOracleV5 = void 0;
+var config_1 = require("./config");
+var feeOracle_1 = require("./feeOracle");
+var utils_1 = require("./utils");
+var feeOracleV4_1 = require("./feeOracleV4");
+/**
+ * Oracle for new V5 version - estimates transaction fees with smart gas limit & bumping
+ */
+var TornadoFeeOracleV5 = /** @class */ (function (_super) {
+    __extends(TornadoFeeOracleV5, _super);
+    function TornadoFeeOracleV5(chainId, rpcUrl) {
+        var _this = _super.call(this, 5, chainId, rpcUrl) || this;
+        _this.fallbackFeeOracle = new feeOracleV4_1.TornadoFeeOracleV4(chainId, rpcUrl);
+        return _this;
+    }
+    TornadoFeeOracleV5.prototype.getGasLimit = function (tx, type, bumpPercent) {
+        if (type === void 0) { type = 'other'; }
+        if (bumpPercent === void 0) { bumpPercent = 20; }
+        return __awaiter(this, void 0, void 0, function () {
+            var fetchedGasLimit, e_1;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        if (!tx || Object.keys(tx).length === 0)
+                            return [2 /*return*/, this.fallbackFeeOracle.getGasLimit(tx, type, bumpPercent)];
+                        /* Relayer gas limit must be lower so that fluctuations in gas price cannot lead to the fact that
+                         * the relayer will actually pay for gas more than the money allocated for this by the user
+                         * (that is, in fact, relayer will pay for gas from his own money, unless we make the bump percent less for him)
+                         */
+                        if (type === 'relayer_withdrawal')
+                            bumpPercent = 10;
+                        if (type === 'user_withdrawal')
+                            bumpPercent = 30;
+                        _a.label = 1;
+                    case 1:
+                        _a.trys.push([1, 3, , 4]);
+                        return [4 /*yield*/, this.provider.estimateGas(tx)];
+                    case 2:
+                        fetchedGasLimit = _a.sent();
+                        return [2 /*return*/, (0, utils_1.bump)(fetchedGasLimit, bumpPercent).toNumber()];
+                    case 3:
+                        e_1 = _a.sent();
+                        return [2 /*return*/, this.fallbackFeeOracle.getGasLimit(tx, type, bumpPercent)];
+                    case 4: return [2 /*return*/];
+                }
+            });
+        });
+    };
+    TornadoFeeOracleV5.prototype.getGasPriceParams = function (speed, bumpPercent) {
+        return __awaiter(this, void 0, void 0, function () {
+            return __generator(this, function (_a) {
+                // Only if bump percent didn't provided (if user provides 0, no need to recalculate)
+                if (bumpPercent === undefined) {
+                    switch (this.chainId) {
+                        case config_1.ChainId.GOERLI:
+                            bumpPercent = 100;
+                            break;
+                        case config_1.ChainId.POLYGON:
+                        case config_1.ChainId.AVAX:
+                        case config_1.ChainId.XDAI:
+                            bumpPercent = 30;
+                            break;
+                        default:
+                            bumpPercent = 10;
+                    }
+                }
+                return [2 /*return*/, _super.prototype.getGasPriceParams.call(this, speed, bumpPercent)];
+            });
+        });
+    };
+    return TornadoFeeOracleV5;
+}(feeOracle_1.TornadoFeeOracle));
+exports.TornadoFeeOracleV5 = TornadoFeeOracleV5;
+//# sourceMappingURL=feeOracleV5.js.map

lib/feeOracleV5.js.map

@@ -0,0 +1 @@
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lib/feeOracleV6.d.ts

@@ -0,0 +1,32 @@
+import { TornadoFeeOracle } from './feeOracle';
+import { ITornadoFeeOracle, TransactionData, TxType, LegacyGasPriceKey, GasPriceParams, GetWithdrawalFeeViaRelayerInput, HexadecimalStringifiedNumber } from './types';
+/**
+ * V6 version that would cover every available networks and relayers
+ *
+ * Ported from https://git.tornado.ws/tornadocontrib/tornado-core/src/branch/main/src/fees.ts and has been verified over time
+ */
+export declare class TornadoFeeOracleV6 extends TornadoFeeOracle implements ITornadoFeeOracle {
+    private fallbackFeeOracle;
+    overrideGasPrice?: GasPriceParams;
+    constructor(chainId: number, rpcUrl: string, overrideGasPrice?: GasPriceParams);
+    /**
+     * Apply static 10% gasLimit premium as it wouldn't change across nodes or relayers
+     */
+    getGasLimit(tx?: TransactionData, type?: TxType, bumpPercent?: number): Promise<number>;
+    /**
+     * Apply static 50% gasPrice premium for EIP-1559 enabled networks
+     *
+     * Because Tornado Transactions are censored from block builders
+     * it would take some time to be confirmed after when the transaction is broadcasted.
+     *
+     * We apply 50% premium to combat basefee spike (ethers.js uses 100% premium by default)
+     * (Can spike 12.5% per block accoring to the EIP-1559 metrics https://metamask.io/1559/)
+     */
+    getGasPriceParams(speed?: LegacyGasPriceKey, bumpPercent?: number): Promise<GasPriceParams>;
+    /**
+     * Apply 20% premium from the calculated fee from UI, applies 5% fee from relayer to prevent arbitrage from refund
+     */
+    calculateWithdrawalFeeViaRelayer(params: GetWithdrawalFeeViaRelayerInput & {
+        premium?: number;
+    }): Promise<HexadecimalStringifiedNumber>;
+}

lib/feeOracleV6.js

@@ -0,0 +1,135 @@
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+    var extendStatics = function (d, b) {
+        extendStatics = Object.setPrototypeOf ||
+            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+        return extendStatics(d, b);
+    };
+    return function (d, b) {
+        if (typeof b !== "function" && b !== null)
+            throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+})();
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __generator = (this && this.__generator) || function (thisArg, body) {
+    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+    function verb(n) { return function (v) { return step([n, v]); }; }
+    function step(op) {
+        if (f) throw new TypeError("Generator is already executing.");
+        while (g && (g = 0, op[0] && (_ = 0)), _) try {
+            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+            if (y = 0, t) op = [op[0] & 2, t.value];
+            switch (op[0]) {
+                case 0: case 1: t = op; break;
+                case 4: _.label++; return { value: op[1], done: false };
+                case 5: _.label++; y = op[1]; op = [0]; continue;
+                case 7: op = _.ops.pop(); _.trys.pop(); continue;
+                default:
+                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                    if (t[2]) _.ops.pop();
+                    _.trys.pop(); continue;
+            }
+            op = body.call(thisArg, _);
+        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+    }
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.TornadoFeeOracleV6 = void 0;
+var config_1 = require("./config");
+var feeOracle_1 = require("./feeOracle");
+var utils_1 = require("./utils");
+var feeOracleV5_1 = require("./feeOracleV5");
+/**
+ * V6 version that would cover every available networks and relayers
+ *
+ * Ported from https://git.tornado.ws/tornadocontrib/tornado-core/src/branch/main/src/fees.ts and has been verified over time
+ */
+var TornadoFeeOracleV6 = /** @class */ (function (_super) {
+    __extends(TornadoFeeOracleV6, _super);
+    function TornadoFeeOracleV6(chainId, rpcUrl, overrideGasPrice) {
+        var _this = _super.call(this, 6, chainId, rpcUrl) || this;
+        _this.fallbackFeeOracle = new feeOracleV5_1.TornadoFeeOracleV5(chainId, rpcUrl);
+        _this.overrideGasPrice = overrideGasPrice;
+        return _this;
+    }
+    /**
+     * Apply static 10% gasLimit premium as it wouldn't change across nodes or relayers
+     */
+    TornadoFeeOracleV6.prototype.getGasLimit = function (tx, type, bumpPercent) {
+        if (type === void 0) { type = 'other'; }
+        if (bumpPercent === void 0) { bumpPercent = 10; }
+        return __awaiter(this, void 0, void 0, function () {
+            var fetchedGasLimit;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        if (!tx || Object.keys(tx).length === 0)
+                            return [2 /*return*/, this.fallbackFeeOracle.getGasLimit(tx, type, bumpPercent)];
+                        return [4 /*yield*/, this.provider.estimateGas(tx)];
+                    case 1:
+                        fetchedGasLimit = _a.sent();
+                        return [2 /*return*/, (0, utils_1.bump)(fetchedGasLimit, bumpPercent).toNumber()];
+                }
+            });
+        });
+    };
+    /**
+     * Apply static 50% gasPrice premium for EIP-1559 enabled networks
+     *
+     * Because Tornado Transactions are censored from block builders
+     * it would take some time to be confirmed after when the transaction is broadcasted.
+     *
+     * We apply 50% premium to combat basefee spike (ethers.js uses 100% premium by default)
+     * (Can spike 12.5% per block accoring to the EIP-1559 metrics https://metamask.io/1559/)
+     */
+    TornadoFeeOracleV6.prototype.getGasPriceParams = function (speed, bumpPercent) {
+        return __awaiter(this, void 0, void 0, function () {
+            return __generator(this, function (_a) {
+                if (this.overrideGasPrice) {
+                    return [2 /*return*/, this.overrideGasPrice];
+                }
+                if (typeof bumpPercent === 'undefined') {
+                    bumpPercent = this.chainId === config_1.ChainId.BSC ? undefined : 50;
+                }
+                return [2 /*return*/, _super.prototype.getGasPriceParams.call(this, speed, bumpPercent)];
+            });
+        });
+    };
+    /**
+     * Apply 20% premium from the calculated fee from UI, applies 5% fee from relayer to prevent arbitrage from refund
+     */
+    TornadoFeeOracleV6.prototype.calculateWithdrawalFeeViaRelayer = function (params) {
+        return __awaiter(this, void 0, void 0, function () {
+            var fees, premium;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0: return [4 /*yield*/, _super.prototype.calculateWithdrawalFeeViaRelayer.call(this, params)];
+                    case 1:
+                        fees = _a.sent();
+                        premium = params.premium || (params.txType === 'user_withdrawal' ? 20 : 5);
+                        return [2 /*return*/, (0, utils_1.bump)(fees, premium).toHexString()];
+                }
+            });
+        });
+    };
+    return TornadoFeeOracleV6;
+}(feeOracle_1.TornadoFeeOracle));
+exports.TornadoFeeOracleV6 = TornadoFeeOracleV6;
+//# sourceMappingURL=feeOracleV6.js.map

lib/feeOracleV6.js.map

@@ -0,0 +1 @@
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lib/index.d.ts

@@ -0,0 +1,4 @@
+export * from './feeOracleV4';
+export * from './feeOracleV5';
+export * from './feeOracleV6';
+export * from './tokenPriceOracle';

lib/index.js

@@ -0,0 +1,21 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __exportStar = (this && this.__exportStar) || function(m, exports) {
+    for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(exports, p)) __createBinding(exports, m, p);
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+__exportStar(require("./feeOracleV4"), exports);
+__exportStar(require("./feeOracleV5"), exports);
+__exportStar(require("./feeOracleV6"), exports);
+__exportStar(require("./tokenPriceOracle"), exports);
+//# sourceMappingURL=index.js.map

lib/index.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;AAAA,gDAA8B;AAC9B,gDAA8B;AAC9B,gDAA8B;AAC9B,qDAAmC"}

lib/tokenPriceOracle.d.ts

@@ -0,0 +1,29 @@
+import { ITornadoPriceOracle, Token, TokenPrices } from './types';
+import { ChainId } from './config';
+export declare class TokenPriceOracle implements ITornadoPriceOracle {
+    private tokens;
+    private defaultTokenPrices;
+    private oracle;
+    private multiCall;
+    private provider;
+    /**
+     * Constructs TokenPriceOracle class instance
+     * @param {string} rpcUrl http RPC (Ethereum Mainnet) url to fetch token prices from contract
+     * @param {Token[]} [tokens] Array of tokens
+     * @param {TokenPrices} [defaultTokenPrices] Default token prices, fallback if nothing loaded from contract
+     */
+    constructor(rpcUrl: string, tokens?: Token[], defaultTokenPrices?: TokenPrices, chainId?: ChainId);
+    get defaultPrices(): TokenPrices;
+    /**
+     * Prepare data for MultiCall contract
+     * @param {Token[]} [tokens] Tokens array
+     * @returns Valid structure to provide to MultiCall contract
+     */
+    private prepareCallData;
+    /**
+     * Fetch actual tokens price rate to ETH from offchain oracles
+     * @param {Token[]} [tokens] Token array
+     * @returns {TokenPrices} Object with token price rate to ETH in WEI
+     */
+    fetchPrices(tokens?: Token[]): Promise<TokenPrices>;
+}

lib/tokenPriceOracle.js

@@ -0,0 +1,161 @@
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __generator = (this && this.__generator) || function (thisArg, body) {
+    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+    function verb(n) { return function (v) { return step([n, v]); }; }
+    function step(op) {
+        if (f) throw new TypeError("Generator is already executing.");
+        while (g && (g = 0, op[0] && (_ = 0)), _) try {
+            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+            if (y = 0, t) op = [op[0] & 2, t.value];
+            switch (op[0]) {
+                case 0: case 1: t = op; break;
+                case 4: _.label++; return { value: op[1], done: false };
+                case 5: _.label++; y = op[1]; op = [0]; continue;
+                case 7: op = _.ops.pop(); _.trys.pop(); continue;
+                default:
+                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                    if (t[2]) _.ops.pop();
+                    _.trys.pop(); continue;
+            }
+            op = body.call(thisArg, _);
+        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+    }
+};
+var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
+    if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
+        if (ar || !(i in from)) {
+            if (!ar) ar = Array.prototype.slice.call(from, 0, i);
+            ar[i] = from[i];
+        }
+    }
+    return to.concat(ar || Array.prototype.slice.call(from));
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.TokenPriceOracle = void 0;
+var factories_1 = require("./contracts/factories");
+var ethers_1 = require("ethers");
+var utils_1 = require("ethers/lib/utils");
+var tornado_config_1 = require("@tornado/tornado-config");
+var config_1 = require("./config");
+/**
+ * Filter non-native tokens from Tornado instances config
+ * @param instances Tornado instances from torn-token config ('@tornado/tornado-config' library)
+ * @returns Array of non-native tokens
+ */
+function filterTokensFromTornadoInstances(instances) {
+    var ethInstances = Object.values(instances[config_1.ChainId.MAINNET]);
+    return ethInstances.filter(function (tokenInstance) { return !!tokenInstance.tokenAddress; });
+}
+var tornToken = {
+    tokenAddress: '0x77777FeDdddFfC19Ff86DB637967013e6C6A116C',
+    symbol: 'torn',
+    decimals: 18,
+};
+var tornadoTokens = __spreadArray([tornToken], filterTokensFromTornadoInstances(tornado_config_1.instances), true);
+var defaultTornadoTokenPrices = {
+    torn: '1689423546359032',
+    dai: '598416104472725',
+    cdai: '13384388487019',
+    usdc: '599013776676721',
+    usdt: '599323410893614',
+    wbtc: '15659889148334216720',
+};
+var TokenPriceOracle = /** @class */ (function () {
+    /**
+     * Constructs TokenPriceOracle class instance
+     * @param {string} rpcUrl http RPC (Ethereum Mainnet) url to fetch token prices from contract
+     * @param {Token[]} [tokens] Array of tokens
+     * @param {TokenPrices} [defaultTokenPrices] Default token prices, fallback if nothing loaded from contract
+     */
+    function TokenPriceOracle(rpcUrl, tokens, defaultTokenPrices, chainId) {
+        if (tokens === void 0) { tokens = tornadoTokens; }
+        if (defaultTokenPrices === void 0) { defaultTokenPrices = defaultTornadoTokenPrices; }
+        this.tokens = tokens;
+        this.defaultTokenPrices = defaultTokenPrices;
+        this.provider = new ethers_1.ethers.providers.JsonRpcProvider(rpcUrl);
+        this.oracle = (0, factories_1.getOffchainOracleContract)(this.provider, chainId);
+        this.multiCall = (0, factories_1.getMultiCallContract)(this.provider);
+    }
+    Object.defineProperty(TokenPriceOracle.prototype, "defaultPrices", {
+        // Instant return default token prices
+        get: function () {
+            return this.defaultTokenPrices;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    /**
+     * Prepare data for MultiCall contract
+     * @param {Token[]} [tokens] Tokens array
+     * @returns Valid structure to provide to MultiCall contract
+     */
+    TokenPriceOracle.prototype.prepareCallData = function (tokens) {
+        var _this = this;
+        if (tokens === void 0) { tokens = this.tokens; }
+        return tokens.map(function (token) { return ({
+            target: _this.oracle.address,
+            allowFailure: true,
+            callData: _this.oracle.interface.encodeFunctionData('getRateToEth', [token.tokenAddress, true]),
+        }); });
+    };
+    /**
+     * Fetch actual tokens price rate to ETH from offchain oracles
+     * @param {Token[]} [tokens] Token array
+     * @returns {TokenPrices} Object with token price rate to ETH in WEI
+     */
+    TokenPriceOracle.prototype.fetchPrices = function (tokens) {
+        if (tokens === void 0) { tokens = this.tokens; }
+        return __awaiter(this, void 0, void 0, function () {
+            var callData, results, prices, i, tokenSymbol, decodedRate, tokenDecimals, ethDecimals, price, e_1;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        _a.trys.push([0, 2, , 3]);
+                        if (!(tokens === null || tokens === void 0 ? void 0 : tokens.length))
+                            return [2 /*return*/, {}];
+                        callData = this.prepareCallData(tokens);
+                        return [4 /*yield*/, this.multiCall.callStatic.aggregate3(callData)];
+                    case 1:
+                        results = _a.sent();
+                        prices = {};
+                        for (i = 0; i < results.length; i++) {
+                            tokenSymbol = tokens[i].symbol.toLowerCase();
+                            if (!results[i].success) {
+                                if (this.defaultTokenPrices[tokenSymbol])
+                                    prices[tokenSymbol] = this.defaultTokenPrices[tokenSymbol];
+                                continue;
+                            }
+                            decodedRate = utils_1.defaultAbiCoder.decode(['uint256'], results[i].returnData).toString();
+                            tokenDecimals = ethers_1.BigNumber.from(10).pow(tokens[i].decimals);
+                            ethDecimals = ethers_1.BigNumber.from(10).pow(18);
+                            price = ethers_1.BigNumber.from(decodedRate).mul(tokenDecimals).div(ethDecimals);
+                            prices[tokenSymbol] = price.toString();
+                        }
+                        return [2 /*return*/, prices];
+                    case 2:
+                        e_1 = _a.sent();
+                        console.error('Cannot get token prices, return default: ' + e_1);
+                        return [2 /*return*/, this.defaultTokenPrices];
+                    case 3: return [2 /*return*/];
+                }
+            });
+        });
+    };
+    return TokenPriceOracle;
+}());
+exports.TokenPriceOracle = TokenPriceOracle;
+//# sourceMappingURL=tokenPriceOracle.js.map

lib/tokenPriceOracle.js.map

@@ -0,0 +1 @@
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lib/types.d.ts

@@ -0,0 +1,92 @@
+import { BigNumberish, BytesLike } from 'ethers';
+import { AvailableTokenSymbols } from '@tornado/tornado-config';
+import { InstanceTokenSymbol } from './config';
+export type HexadecimalStringifiedNumber = string;
+export type LegacyGasPriceKey = 'instant' | 'fast' | 'standard' | 'low';
+export type GasPriceParams = {
+    gasPrice: string;
+} | {
+    maxFeePerGas: string;
+    maxPriorityFeePerGas: string;
+};
+export type LegacyGasPrices = {
+    [gasPriceType in LegacyGasPriceKey]: number;
+};
+export type WithdrawalTxType = 'user_withdrawal' | 'relayer_withdrawal' | 'relayer_withdrawal_check_v4';
+export type TxType = WithdrawalTxType | 'other';
+export interface TransactionData {
+    to: string;
+    from?: string;
+    nonce?: number;
+    gasLimit?: BigNumberish;
+    gasPrice?: BigNumberish;
+    data?: string;
+    value: BigNumberish;
+    chainId?: number;
+    type?: number;
+    maxFeePerGas?: BigNumberish;
+    maxPriorityFeePerGas?: BigNumberish;
+}
+export interface ITornadoFeeOracle {
+    getGasParams: (params?: GetGasParamsInput) => Promise<GetGasParamsRes>;
+    getGas: (params?: GetGasInput) => Promise<HexadecimalStringifiedNumber>;
+    getGasPriceParams: (speed?: LegacyGasPriceKey, bumpPercent?: number) => Promise<GasPriceParams>;
+    getGasPrice: (speed?: LegacyGasPriceKey, bumpPercent?: number) => Promise<HexadecimalStringifiedNumber>;
+    getGasLimit: (tx?: TransactionData, type?: TxType, bumpPercent?: number) => Promise<number>;
+    fetchL1OptimismFee: (tx?: TransactionData) => Promise<HexadecimalStringifiedNumber>;
+    calculateRefundInETH: (gasPrice: BigNumberish, tokenSymbol: InstanceTokenSymbol) => HexadecimalStringifiedNumber;
+    fetchRefundInETH: (tokenSymbol: InstanceTokenSymbol) => Promise<HexadecimalStringifiedNumber>;
+    calculateRefundInToken: (gasPrice: BigNumberish, tokenPriceInEth: BigNumberish, tokenDecimals: HexadecimalStringifiedNumber | number, tokenSymbol: InstanceTokenSymbol) => HexadecimalStringifiedNumber;
+    calculateWithdrawalFeeViaRelayer: (params: GetWithdrawalFeeViaRelayerInput) => Promise<HexadecimalStringifiedNumber>;
+}
+export interface ITornadoPriceOracle {
+    defaultPrices: TokenPrices;
+    fetchPrices: (tokens?: Token[]) => Promise<TokenPrices>;
+}
+export type WithdrawalData = {
+    contract: string;
+    proof: BytesLike;
+    args: [BytesLike, BytesLike, string, string, BigNumberish, BigNumberish];
+};
+export type TornadoPoolInstance = {
+    currency: AvailableTokenSymbols;
+    amount: number;
+    decimals: number;
+};
+export type TokenSymbol = 'dai' | 'cdai' | 'usdc' | 'usdt' | 'wbtc' | 'torn';
+export type Token = {
+    tokenAddress: string;
+    symbol: TokenSymbol;
+    decimals: number;
+};
+export type TokenPrices = {
+    [tokenSymbol in TokenSymbol]?: BigNumberish;
+};
+export type GetGasParamsRes = {
+    gasLimit: number;
+    gasPrice: HexadecimalStringifiedNumber;
+};
+export type GetGasInput = {
+    txType?: TxType;
+    tx?: TransactionData;
+    predefinedGasPrice?: HexadecimalStringifiedNumber;
+    predefinedGasLimit?: number;
+    bumpGasLimitPercent?: number;
+    bumpGasPricePercent?: number;
+    speed?: LegacyGasPriceKey;
+};
+export type GetGasParamsInput = GetGasInput & {
+    includeL1FeeToGasLimit?: boolean;
+};
+export type GetWithdrawalFeeViaRelayerInput = {
+    txType: WithdrawalTxType;
+    tx?: TransactionData;
+    relayerFeePercent: number | string;
+    currency: AvailableTokenSymbols | Uppercase<AvailableTokenSymbols>;
+    amount: string | number;
+    decimals: string | number;
+    refundInEth?: HexadecimalStringifiedNumber;
+    tokenPriceInEth?: HexadecimalStringifiedNumber | string;
+    predefinedGasPrice?: HexadecimalStringifiedNumber;
+    predefinedGasLimit?: number;
+};

lib/types.js

@@ -0,0 +1,3 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=types.js.map

lib/types.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"types.js","sourceRoot":"","sources":["../src/types.ts"],"names":[],"mappings":""}

lib/utils.d.ts

@@ -0,0 +1,7 @@
+import { GasPriceParams, TransactionData } from './types';
+import { BigNumber, BigNumberish } from 'ethers';
+export declare function serializeTx(tx?: TransactionData | string): string;
+export declare function calculateGasPriceInWei(gasPrice: GasPriceParams): BigNumber;
+export declare function bump(value: BigNumberish, percent: number): BigNumber;
+export declare function fromGweiToWeiHex(value: number | string): BigNumberish;
+export declare function convertETHToToken(amountInWEI: BigNumberish, tokenDecimals: number | string, tokenPriceInWei: BigNumberish): BigNumber;

lib/utils.js

@@ -0,0 +1,43 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.convertETHToToken = exports.fromGweiToWeiHex = exports.bump = exports.calculateGasPriceInWei = exports.serializeTx = void 0;
+var transactions_1 = require("@ethersproject/transactions");
+var ethers_1 = require("ethers");
+var bignumber_js_1 = __importDefault(require("bignumber.js"));
+bignumber_js_1.default.config({ EXPONENTIAL_AT: 100 });
+var GWEI = 1e9;
+function serializeTx(tx) {
+    if (!tx)
+        tx = '0x';
+    if (typeof tx === 'string')
+        return tx;
+    return (0, transactions_1.serialize)(tx);
+}
+exports.serializeTx = serializeTx;
+function calculateGasPriceInWei(gasPrice) {
+    // @ts-ignore
+    return ethers_1.BigNumber.from(gasPrice.gasPrice || gasPrice.maxFeePerGas);
+}
+exports.calculateGasPriceInWei = calculateGasPriceInWei;
+function bump(value, percent) {
+    var hundredPercents = (0, bignumber_js_1.default)(100);
+    return ethers_1.BigNumber.from((0, bignumber_js_1.default)(ethers_1.BigNumber.from(value).toHexString())
+        .times(hundredPercents.plus((0, bignumber_js_1.default)(percent)))
+        .div(hundredPercents)
+        .decimalPlaces(0, 1)
+        .toString());
+}
+exports.bump = bump;
+function fromGweiToWeiHex(value) {
+    return ethers_1.BigNumber.from((0, bignumber_js_1.default)(value).times(GWEI).toString()).toHexString();
+}
+exports.fromGweiToWeiHex = fromGweiToWeiHex;
+function convertETHToToken(amountInWEI, tokenDecimals, tokenPriceInWei) {
+    var tokenDecimalsMultiplier = ethers_1.BigNumber.from(10).pow(tokenDecimals);
+    return ethers_1.BigNumber.from(amountInWEI).mul(tokenDecimalsMultiplier).div(tokenPriceInWei);
+}
+exports.convertETHToToken = convertETHToToken;
+//# sourceMappingURL=utils.js.map

lib/utils.js.map

@@ -0,0 +1 @@
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package.json

@@ -1,6 +1,6 @@
 {
   "name": "@tornado/tornado-oracles",
-  "version": "3.3.0",
+  "version": "3.4.0",
   "description": "Oracles for Tornado-specific transactions & actions",
   "main": "./lib/index.js",
   "types": "./lib/index.d.ts",
@@ -29,7 +29,6 @@
   "author": "Theo",
   "license": "MIT",
   "dependencies": {
-    "@tornado/gas-price-oracle": "^0.5.3",
     "@tornado/tornado-config": "^2.0.0",
     "@types/node": "^20.5.1",
     "bignumber.js": "^9.1.1",

src/config.ts

@@ -9,6 +9,7 @@ export enum ChainId {
   OPTIMISM = 10,
   ARBITRUM = 42161,
   AVAX = 43114,
+  SEPOLIA = 11155111,
 }
 
 export enum InstanceTokenSymbol {
@@ -72,6 +73,12 @@ export const defaultGasPrices: GasPricesConfig = {
     standard: 25,
     low: 25,
   },
+  [ChainId.SEPOLIA]: {
+    instant: 80,
+    fast: 50,
+    standard: 25,
+    low: 8,
+  },
 };
 
 type GasLimitConfig = {
@@ -87,6 +94,7 @@ export const defaultWithdrawalGasLimit: GasLimitConfig = {
   [ChainId.BSC]: 390000,
   [ChainId.POLYGON]: 390000,
   [ChainId.XDAI]: 390000,
+  [ChainId.SEPOLIA]: 550000,
 };
 
 type InstanceTokenGasLimitConfig = {
@@ -102,5 +110,6 @@ export const defaultInstanceTokensGasLimit: InstanceTokenGasLimitConfig = {
 };
 
 export const optimismL1FeeOracleAddress = '0x420000000000000000000000000000000000000F';
-export const offchainOracleAddress = '0x07D91f5fb9Bf7798734C3f606dB065549F6893bb';
+export const offchainOracleAddress = '0x00000000000D6FFc74A8feb35aF5827bf57f6786';
-export const multiCallAddress = '0xda3c19c6fe954576707fa24695efb830d9cca1ca';
+export const sepoliaOffchainOracleAddress = '0x1f89EAF03E5b260Bc6D4Ae3c3334b1B750F3e127';
+export const multiCallAddress = '0xcA11bde05977b3631167028862bE2a173976CA11';

src/contracts/MulticallAbi.ts

@@ -1,30 +1,137 @@
 /* Autogenerated file. Do not edit manually. */
 /* tslint:disable */
 /* eslint-disable */
-import type { BaseContract, BigNumber, BytesLike, CallOverrides, PopulatedTransaction, Signer, utils } from 'ethers';
+import type {
+  BaseContract,
+  BigNumber,
+  BigNumberish,
+  BytesLike,
+  CallOverrides,
+  ContractTransaction,
+  PayableOverrides,
+  PopulatedTransaction,
+  Signer,
+  utils,
+} from 'ethers';
 import type { FunctionFragment, Result } from '@ethersproject/abi';
 import type { Listener, Provider } from '@ethersproject/providers';
 import type { TypedEventFilter, TypedEvent, TypedListener, OnEvent } from './common';
 
-export declare namespace MultiCall {
+export declare namespace Multicall3 {
-  export type CallStruct = { to: string; data: BytesLike };
+  export type CallStruct = { target: string; callData: BytesLike };
 
   export type CallStructOutput = [string, string] & {
-    to: string;
+    target: string;
-    data: string;
+    callData: string;
+  };
+
+  export type Call3Struct = {
+    target: string;
+    allowFailure: boolean;
+    callData: BytesLike;
+  };
+
+  export type Call3StructOutput = [string, boolean, string] & {
+    target: string;
+    allowFailure: boolean;
+    callData: string;
+  };
+
+  export type ResultStruct = { success: boolean; returnData: BytesLike };
+
+  export type ResultStructOutput = [boolean, string] & {
+    success: boolean;
+    returnData: string;
+  };
+
+  export type Call3ValueStruct = {
+    target: string;
+    allowFailure: boolean;
+    value: BigNumberish;
+    callData: BytesLike;
+  };
+
+  export type Call3ValueStructOutput = [string, boolean, BigNumber, string] & {
+    target: string;
+    allowFailure: boolean;
+    value: BigNumber;
+    callData: string;
   };
 }
 
 export interface MulticallAbiInterface extends utils.Interface {
   functions: {
-    'multicall((address,bytes)[])': FunctionFragment;
+    'aggregate((address,bytes)[])': FunctionFragment;
+    'aggregate3((address,bool,bytes)[])': FunctionFragment;
+    'aggregate3Value((address,bool,uint256,bytes)[])': FunctionFragment;
+    'blockAndAggregate((address,bytes)[])': FunctionFragment;
+    'getBasefee()': FunctionFragment;
+    'getBlockHash(uint256)': FunctionFragment;
+    'getBlockNumber()': FunctionFragment;
+    'getChainId()': FunctionFragment;
+    'getCurrentBlockCoinbase()': FunctionFragment;
+    'getCurrentBlockDifficulty()': FunctionFragment;
+    'getCurrentBlockGasLimit()': FunctionFragment;
+    'getCurrentBlockTimestamp()': FunctionFragment;
+    'getEthBalance(address)': FunctionFragment;
+    'getLastBlockHash()': FunctionFragment;
+    'tryAggregate(bool,(address,bytes)[])': FunctionFragment;
+    'tryBlockAndAggregate(bool,(address,bytes)[])': FunctionFragment;
   };
 
-  getFunction(nameOrSignatureOrTopic: 'multicall'): FunctionFragment;
+  getFunction(
+    nameOrSignatureOrTopic:
+      | 'aggregate'
+      | 'aggregate3'
+      | 'aggregate3Value'
+      | 'blockAndAggregate'
+      | 'getBasefee'
+      | 'getBlockHash'
+      | 'getBlockNumber'
+      | 'getChainId'
+      | 'getCurrentBlockCoinbase'
+      | 'getCurrentBlockDifficulty'
+      | 'getCurrentBlockGasLimit'
+      | 'getCurrentBlockTimestamp'
+      | 'getEthBalance'
+      | 'getLastBlockHash'
+      | 'tryAggregate'
+      | 'tryBlockAndAggregate',
+  ): FunctionFragment;
 
-  encodeFunctionData(functionFragment: 'multicall', values: [MultiCall.CallStruct[]]): string;
+  encodeFunctionData(functionFragment: 'aggregate', values: [Multicall3.CallStruct[]]): string;
+  encodeFunctionData(functionFragment: 'aggregate3', values: [Multicall3.Call3Struct[]]): string;
+  encodeFunctionData(functionFragment: 'aggregate3Value', values: [Multicall3.Call3ValueStruct[]]): string;
+  encodeFunctionData(functionFragment: 'blockAndAggregate', values: [Multicall3.CallStruct[]]): string;
+  encodeFunctionData(functionFragment: 'getBasefee', values?: undefined): string;
+  encodeFunctionData(functionFragment: 'getBlockHash', values: [BigNumberish]): string;
+  encodeFunctionData(functionFragment: 'getBlockNumber', values?: undefined): string;
+  encodeFunctionData(functionFragment: 'getChainId', values?: undefined): string;
+  encodeFunctionData(functionFragment: 'getCurrentBlockCoinbase', values?: undefined): string;
+  encodeFunctionData(functionFragment: 'getCurrentBlockDifficulty', values?: undefined): string;
+  encodeFunctionData(functionFragment: 'getCurrentBlockGasLimit', values?: undefined): string;
+  encodeFunctionData(functionFragment: 'getCurrentBlockTimestamp', values?: undefined): string;
+  encodeFunctionData(functionFragment: 'getEthBalance', values: [string]): string;
+  encodeFunctionData(functionFragment: 'getLastBlockHash', values?: undefined): string;
+  encodeFunctionData(functionFragment: 'tryAggregate', values: [boolean, Multicall3.CallStruct[]]): string;
+  encodeFunctionData(functionFragment: 'tryBlockAndAggregate', values: [boolean, Multicall3.CallStruct[]]): string;
 
-  decodeFunctionResult(functionFragment: 'multicall', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'aggregate', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'aggregate3', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'aggregate3Value', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'blockAndAggregate', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'getBasefee', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'getBlockHash', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'getBlockNumber', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'getChainId', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'getCurrentBlockCoinbase', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'getCurrentBlockDifficulty', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'getCurrentBlockGasLimit', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'getCurrentBlockTimestamp', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'getEthBalance', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'getLastBlockHash', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'tryAggregate', data: BytesLike): Result;
+  decodeFunctionResult(functionFragment: 'tryBlockAndAggregate', data: BytesLike): Result;
 
   events: {};
 }
@@ -52,31 +159,275 @@ export interface MulticallAbi extends BaseContract {
   removeListener: OnEvent<this>;
 
   functions: {
-    multicall(
+    aggregate(
-      calls: MultiCall.CallStruct[],
+      calls: Multicall3.CallStruct[],
-      overrides?: CallOverrides,
+      overrides?: PayableOverrides & { from?: string },
-    ): Promise<[string[], boolean[]] & { results: string[]; success: boolean[] }>;
+    ): Promise<ContractTransaction>;
+
+    aggregate3(
+      calls: Multicall3.Call3Struct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<ContractTransaction>;
+
+    aggregate3Value(
+      calls: Multicall3.Call3ValueStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<ContractTransaction>;
+
+    blockAndAggregate(
+      calls: Multicall3.CallStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<ContractTransaction>;
+
+    getBasefee(overrides?: CallOverrides): Promise<[BigNumber] & { basefee: BigNumber }>;
+
+    getBlockHash(blockNumber: BigNumberish, overrides?: CallOverrides): Promise<[string] & { blockHash: string }>;
+
+    getBlockNumber(overrides?: CallOverrides): Promise<[BigNumber] & { blockNumber: BigNumber }>;
+
+    getChainId(overrides?: CallOverrides): Promise<[BigNumber] & { chainid: BigNumber }>;
+
+    getCurrentBlockCoinbase(overrides?: CallOverrides): Promise<[string] & { coinbase: string }>;
+
+    getCurrentBlockDifficulty(overrides?: CallOverrides): Promise<[BigNumber] & { difficulty: BigNumber }>;
+
+    getCurrentBlockGasLimit(overrides?: CallOverrides): Promise<[BigNumber] & { gaslimit: BigNumber }>;
+
+    getCurrentBlockTimestamp(overrides?: CallOverrides): Promise<[BigNumber] & { timestamp: BigNumber }>;
+
+    getEthBalance(addr: string, overrides?: CallOverrides): Promise<[BigNumber] & { balance: BigNumber }>;
+
+    getLastBlockHash(overrides?: CallOverrides): Promise<[string] & { blockHash: string }>;
+
+    tryAggregate(
+      requireSuccess: boolean,
+      calls: Multicall3.CallStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<ContractTransaction>;
+
+    tryBlockAndAggregate(
+      requireSuccess: boolean,
+      calls: Multicall3.CallStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<ContractTransaction>;
   };
 
-  multicall(
+  aggregate(
-    calls: MultiCall.CallStruct[],
+    calls: Multicall3.CallStruct[],
-    overrides?: CallOverrides,
+    overrides?: PayableOverrides & { from?: string },
-  ): Promise<[string[], boolean[]] & { results: string[]; success: boolean[] }>;
+  ): Promise<ContractTransaction>;
+
+  aggregate3(
+    calls: Multicall3.Call3Struct[],
+    overrides?: PayableOverrides & { from?: string },
+  ): Promise<ContractTransaction>;
+
+  aggregate3Value(
+    calls: Multicall3.Call3ValueStruct[],
+    overrides?: PayableOverrides & { from?: string },
+  ): Promise<ContractTransaction>;
+
+  blockAndAggregate(
+    calls: Multicall3.CallStruct[],
+    overrides?: PayableOverrides & { from?: string },
+  ): Promise<ContractTransaction>;
+
+  getBasefee(overrides?: CallOverrides): Promise<BigNumber>;
+
+  getBlockHash(blockNumber: BigNumberish, overrides?: CallOverrides): Promise<string>;
+
+  getBlockNumber(overrides?: CallOverrides): Promise<BigNumber>;
+
+  getChainId(overrides?: CallOverrides): Promise<BigNumber>;
+
+  getCurrentBlockCoinbase(overrides?: CallOverrides): Promise<string>;
+
+  getCurrentBlockDifficulty(overrides?: CallOverrides): Promise<BigNumber>;
+
+  getCurrentBlockGasLimit(overrides?: CallOverrides): Promise<BigNumber>;
+
+  getCurrentBlockTimestamp(overrides?: CallOverrides): Promise<BigNumber>;
+
+  getEthBalance(addr: string, overrides?: CallOverrides): Promise<BigNumber>;
+
+  getLastBlockHash(overrides?: CallOverrides): Promise<string>;
+
+  tryAggregate(
+    requireSuccess: boolean,
+    calls: Multicall3.CallStruct[],
+    overrides?: PayableOverrides & { from?: string },
+  ): Promise<ContractTransaction>;
+
+  tryBlockAndAggregate(
+    requireSuccess: boolean,
+    calls: Multicall3.CallStruct[],
+    overrides?: PayableOverrides & { from?: string },
+  ): Promise<ContractTransaction>;
 
   callStatic: {
-    multicall(
+    aggregate(
-      calls: MultiCall.CallStruct[],
+      calls: Multicall3.CallStruct[],
       overrides?: CallOverrides,
-    ): Promise<[string[], boolean[]] & { results: string[]; success: boolean[] }>;
+    ): Promise<[BigNumber, string[]] & { blockNumber: BigNumber; returnData: string[] }>;
+
+    aggregate3(calls: Multicall3.Call3Struct[], overrides?: CallOverrides): Promise<Multicall3.ResultStructOutput[]>;
+
+    aggregate3Value(
+      calls: Multicall3.Call3ValueStruct[],
+      overrides?: CallOverrides,
+    ): Promise<Multicall3.ResultStructOutput[]>;
+
+    blockAndAggregate(
+      calls: Multicall3.CallStruct[],
+      overrides?: CallOverrides,
+    ): Promise<
+      [BigNumber, string, Multicall3.ResultStructOutput[]] & {
+        blockNumber: BigNumber;
+        blockHash: string;
+        returnData: Multicall3.ResultStructOutput[];
+      }
+    >;
+
+    getBasefee(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getBlockHash(blockNumber: BigNumberish, overrides?: CallOverrides): Promise<string>;
+
+    getBlockNumber(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getChainId(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getCurrentBlockCoinbase(overrides?: CallOverrides): Promise<string>;
+
+    getCurrentBlockDifficulty(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getCurrentBlockGasLimit(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getCurrentBlockTimestamp(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getEthBalance(addr: string, overrides?: CallOverrides): Promise<BigNumber>;
+
+    getLastBlockHash(overrides?: CallOverrides): Promise<string>;
+
+    tryAggregate(
+      requireSuccess: boolean,
+      calls: Multicall3.CallStruct[],
+      overrides?: CallOverrides,
+    ): Promise<Multicall3.ResultStructOutput[]>;
+
+    tryBlockAndAggregate(
+      requireSuccess: boolean,
+      calls: Multicall3.CallStruct[],
+      overrides?: CallOverrides,
+    ): Promise<
+      [BigNumber, string, Multicall3.ResultStructOutput[]] & {
+        blockNumber: BigNumber;
+        blockHash: string;
+        returnData: Multicall3.ResultStructOutput[];
+      }
+    >;
   };
 
   filters: {};
 
   estimateGas: {
-    multicall(calls: MultiCall.CallStruct[], overrides?: CallOverrides): Promise<BigNumber>;
+    aggregate(calls: Multicall3.CallStruct[], overrides?: PayableOverrides & { from?: string }): Promise<BigNumber>;
+
+    aggregate3(calls: Multicall3.Call3Struct[], overrides?: PayableOverrides & { from?: string }): Promise<BigNumber>;
+
+    aggregate3Value(
+      calls: Multicall3.Call3ValueStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<BigNumber>;
+
+    blockAndAggregate(
+      calls: Multicall3.CallStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<BigNumber>;
+
+    getBasefee(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getBlockHash(blockNumber: BigNumberish, overrides?: CallOverrides): Promise<BigNumber>;
+
+    getBlockNumber(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getChainId(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getCurrentBlockCoinbase(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getCurrentBlockDifficulty(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getCurrentBlockGasLimit(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getCurrentBlockTimestamp(overrides?: CallOverrides): Promise<BigNumber>;
+
+    getEthBalance(addr: string, overrides?: CallOverrides): Promise<BigNumber>;
+
+    getLastBlockHash(overrides?: CallOverrides): Promise<BigNumber>;
+
+    tryAggregate(
+      requireSuccess: boolean,
+      calls: Multicall3.CallStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<BigNumber>;
+
+    tryBlockAndAggregate(
+      requireSuccess: boolean,
+      calls: Multicall3.CallStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<BigNumber>;
   };
 
   populateTransaction: {
-    multicall(calls: MultiCall.CallStruct[], overrides?: CallOverrides): Promise<PopulatedTransaction>;
+    aggregate(
+      calls: Multicall3.CallStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<PopulatedTransaction>;
+
+    aggregate3(
+      calls: Multicall3.Call3Struct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<PopulatedTransaction>;
+
+    aggregate3Value(
+      calls: Multicall3.Call3ValueStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<PopulatedTransaction>;
+
+    blockAndAggregate(
+      calls: Multicall3.CallStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<PopulatedTransaction>;
+
+    getBasefee(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+
+    getBlockHash(blockNumber: BigNumberish, overrides?: CallOverrides): Promise<PopulatedTransaction>;
+
+    getBlockNumber(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+
+    getChainId(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+
+    getCurrentBlockCoinbase(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+
+    getCurrentBlockDifficulty(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+
+    getCurrentBlockGasLimit(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+
+    getCurrentBlockTimestamp(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+
+    getEthBalance(addr: string, overrides?: CallOverrides): Promise<PopulatedTransaction>;
+
+    getLastBlockHash(overrides?: CallOverrides): Promise<PopulatedTransaction>;
+
+    tryAggregate(
+      requireSuccess: boolean,
+      calls: Multicall3.CallStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<PopulatedTransaction>;
+
+    tryBlockAndAggregate(
+      requireSuccess: boolean,
+      calls: Multicall3.CallStruct[],
+      overrides?: PayableOverrides & { from?: string },
+    ): Promise<PopulatedTransaction>;
   };
 }

src/contracts/factories.ts

@@ -1,12 +1,21 @@
 import { OptimismL1FeeOracleAbi__factory, OffchainOracleAbi__factory, MulticallAbi__factory } from './';
-import { optimismL1FeeOracleAddress, offchainOracleAddress, multiCallAddress } from '../config';
+import {
+  optimismL1FeeOracleAddress,
+  offchainOracleAddress,
+  multiCallAddress,
+  sepoliaOffchainOracleAddress,
+} from '../config';
 import { Provider } from '@ethersproject/abstract-provider';
+import { ChainId } from '../config';
 
 export const getOptimismL1FeeOracle = (provider: Provider) => {
   return OptimismL1FeeOracleAbi__factory.connect(optimismL1FeeOracleAddress, provider);
 };
 
-export const getOffchainOracleContract = (provider: Provider) => {
+export const getOffchainOracleContract = (provider: Provider, chainId?: ChainId) => {
+  if (chainId === ChainId.SEPOLIA) {
+    return OffchainOracleAbi__factory.connect(sepoliaOffchainOracleAddress, provider);
+  }
   return OffchainOracleAbi__factory.connect(offchainOracleAddress, provider);
 };
 

src/contracts/factories/MulticallAbi__factory.ts

@@ -13,36 +13,438 @@ const _abi = [
         components: [
           {
             internalType: 'address',
-            name: 'to',
+            name: 'target',
             type: 'address',
           },
           {
             internalType: 'bytes',
-            name: 'data',
+            name: 'callData',
             type: 'bytes',
           },
         ],
-        internalType: 'struct MultiCall.Call[]',
+        internalType: 'struct Multicall3.Call[]',
         name: 'calls',
         type: 'tuple[]',
       },
     ],
-    name: 'multicall',
+    name: 'aggregate',
     outputs: [
       {
-        internalType: 'bytes[]',
+        internalType: 'uint256',
-        name: 'results',
+        name: 'blockNumber',
-        type: 'bytes[]',
+        type: 'uint256',
       },
       {
-        internalType: 'bool[]',
+        internalType: 'bytes[]',
-        name: 'success',
+        name: 'returnData',
-        type: 'bool[]',
+        type: 'bytes[]',
+      },
+    ],
+    stateMutability: 'payable',
+    type: 'function',
+  },
+  {
+    inputs: [
+      {
+        components: [
+          {
+            internalType: 'address',
+            name: 'target',
+            type: 'address',
+          },
+          {
+            internalType: 'bool',
+            name: 'allowFailure',
+            type: 'bool',
+          },
+          {
+            internalType: 'bytes',
+            name: 'callData',
+            type: 'bytes',
+          },
+        ],
+        internalType: 'struct Multicall3.Call3[]',
+        name: 'calls',
+        type: 'tuple[]',
+      },
+    ],
+    name: 'aggregate3',
+    outputs: [
+      {
+        components: [
+          {
+            internalType: 'bool',
+            name: 'success',
+            type: 'bool',
+          },
+          {
+            internalType: 'bytes',
+            name: 'returnData',
+            type: 'bytes',
+          },
+        ],
+        internalType: 'struct Multicall3.Result[]',
+        name: 'returnData',
+        type: 'tuple[]',
+      },
+    ],
+    stateMutability: 'payable',
+    type: 'function',
+  },
+  {
+    inputs: [
+      {
+        components: [
+          {
+            internalType: 'address',
+            name: 'target',
+            type: 'address',
+          },
+          {
+            internalType: 'bool',
+            name: 'allowFailure',
+            type: 'bool',
+          },
+          {
+            internalType: 'uint256',
+            name: 'value',
+            type: 'uint256',
+          },
+          {
+            internalType: 'bytes',
+            name: 'callData',
+            type: 'bytes',
+          },
+        ],
+        internalType: 'struct Multicall3.Call3Value[]',
+        name: 'calls',
+        type: 'tuple[]',
+      },
+    ],
+    name: 'aggregate3Value',
+    outputs: [
+      {
+        components: [
+          {
+            internalType: 'bool',
+            name: 'success',
+            type: 'bool',
+          },
+          {
+            internalType: 'bytes',
+            name: 'returnData',
+            type: 'bytes',
+          },
+        ],
+        internalType: 'struct Multicall3.Result[]',
+        name: 'returnData',
+        type: 'tuple[]',
+      },
+    ],
+    stateMutability: 'payable',
+    type: 'function',
+  },
+  {
+    inputs: [
+      {
+        components: [
+          {
+            internalType: 'address',
+            name: 'target',
+            type: 'address',
+          },
+          {
+            internalType: 'bytes',
+            name: 'callData',
+            type: 'bytes',
+          },
+        ],
+        internalType: 'struct Multicall3.Call[]',
+        name: 'calls',
+        type: 'tuple[]',
+      },
+    ],
+    name: 'blockAndAggregate',
+    outputs: [
+      {
+        internalType: 'uint256',
+        name: 'blockNumber',
+        type: 'uint256',
+      },
+      {
+        internalType: 'bytes32',
+        name: 'blockHash',
+        type: 'bytes32',
+      },
+      {
+        components: [
+          {
+            internalType: 'bool',
+            name: 'success',
+            type: 'bool',
+          },
+          {
+            internalType: 'bytes',
+            name: 'returnData',
+            type: 'bytes',
+          },
+        ],
+        internalType: 'struct Multicall3.Result[]',
+        name: 'returnData',
+        type: 'tuple[]',
+      },
+    ],
+    stateMutability: 'payable',
+    type: 'function',
+  },
+  {
+    inputs: [],
+    name: 'getBasefee',
+    outputs: [
+      {
+        internalType: 'uint256',
+        name: 'basefee',
+        type: 'uint256',
       },
     ],
     stateMutability: 'view',
     type: 'function',
   },
+  {
+    inputs: [
+      {
+        internalType: 'uint256',
+        name: 'blockNumber',
+        type: 'uint256',
+      },
+    ],
+    name: 'getBlockHash',
+    outputs: [
+      {
+        internalType: 'bytes32',
+        name: 'blockHash',
+        type: 'bytes32',
+      },
+    ],
+    stateMutability: 'view',
+    type: 'function',
+  },
+  {
+    inputs: [],
+    name: 'getBlockNumber',
+    outputs: [
+      {
+        internalType: 'uint256',
+        name: 'blockNumber',
+        type: 'uint256',
+      },
+    ],
+    stateMutability: 'view',
+    type: 'function',
+  },
+  {
+    inputs: [],
+    name: 'getChainId',
+    outputs: [
+      {
+        internalType: 'uint256',
+        name: 'chainid',
+        type: 'uint256',
+      },
+    ],
+    stateMutability: 'view',
+    type: 'function',
+  },
+  {
+    inputs: [],
+    name: 'getCurrentBlockCoinbase',
+    outputs: [
+      {
+        internalType: 'address',
+        name: 'coinbase',
+        type: 'address',
+      },
+    ],
+    stateMutability: 'view',
+    type: 'function',
+  },
+  {
+    inputs: [],
+    name: 'getCurrentBlockDifficulty',
+    outputs: [
+      {
+        internalType: 'uint256',
+        name: 'difficulty',
+        type: 'uint256',
+      },
+    ],
+    stateMutability: 'view',
+    type: 'function',
+  },
+  {
+    inputs: [],
+    name: 'getCurrentBlockGasLimit',
+    outputs: [
+      {
+        internalType: 'uint256',
+        name: 'gaslimit',
+        type: 'uint256',
+      },
+    ],
+    stateMutability: 'view',
+    type: 'function',
+  },
+  {
+    inputs: [],
+    name: 'getCurrentBlockTimestamp',
+    outputs: [
+      {
+        internalType: 'uint256',
+        name: 'timestamp',
+        type: 'uint256',
+      },
+    ],
+    stateMutability: 'view',
+    type: 'function',
+  },
+  {
+    inputs: [
+      {
+        internalType: 'address',
+        name: 'addr',
+        type: 'address',
+      },
+    ],
+    name: 'getEthBalance',
+    outputs: [
+      {
+        internalType: 'uint256',
+        name: 'balance',
+        type: 'uint256',
+      },
+    ],
+    stateMutability: 'view',
+    type: 'function',
+  },
+  {
+    inputs: [],
+    name: 'getLastBlockHash',
+    outputs: [
+      {
+        internalType: 'bytes32',
+        name: 'blockHash',
+        type: 'bytes32',
+      },
+    ],
+    stateMutability: 'view',
+    type: 'function',
+  },
+  {
+    inputs: [
+      {
+        internalType: 'bool',
+        name: 'requireSuccess',
+        type: 'bool',
+      },
+      {
+        components: [
+          {
+            internalType: 'address',
+            name: 'target',
+            type: 'address',
+          },
+          {
+            internalType: 'bytes',
+            name: 'callData',
+            type: 'bytes',
+          },
+        ],
+        internalType: 'struct Multicall3.Call[]',
+        name: 'calls',
+        type: 'tuple[]',
+      },
+    ],
+    name: 'tryAggregate',
+    outputs: [
+      {
+        components: [
+          {
+            internalType: 'bool',
+            name: 'success',
+            type: 'bool',
+          },
+          {
+            internalType: 'bytes',
+            name: 'returnData',
+            type: 'bytes',
+          },
+        ],
+        internalType: 'struct Multicall3.Result[]',
+        name: 'returnData',
+        type: 'tuple[]',
+      },
+    ],
+    stateMutability: 'payable',
+    type: 'function',
+  },
+  {
+    inputs: [
+      {
+        internalType: 'bool',
+        name: 'requireSuccess',
+        type: 'bool',
+      },
+      {
+        components: [
+          {
+            internalType: 'address',
+            name: 'target',
+            type: 'address',
+          },
+          {
+            internalType: 'bytes',
+            name: 'callData',
+            type: 'bytes',
+          },
+        ],
+        internalType: 'struct Multicall3.Call[]',
+        name: 'calls',
+        type: 'tuple[]',
+      },
+    ],
+    name: 'tryBlockAndAggregate',
+    outputs: [
+      {
+        internalType: 'uint256',
+        name: 'blockNumber',
+        type: 'uint256',
+      },
+      {
+        internalType: 'bytes32',
+        name: 'blockHash',
+        type: 'bytes32',
+      },
+      {
+        components: [
+          {
+            internalType: 'bool',
+            name: 'success',
+            type: 'bool',
+          },
+          {
+            internalType: 'bytes',
+            name: 'returnData',
+            type: 'bytes',
+          },
+        ],
+        internalType: 'struct Multicall3.Result[]',
+        name: 'returnData',
+        type: 'tuple[]',
+      },
+    ],
+    stateMutability: 'payable',
+    type: 'function',
+  },
 ] as const;
 
 export class MulticallAbi__factory {

src/feeOracle.ts

@@ -1,4 +1,3 @@
-import { GasPriceOracle } from '@tornado/gas-price-oracle';
 import { BigNumber, BigNumberish, ethers } from 'ethers';
 import BigNumberFloat from 'bignumber.js';
 import { parseUnits } from 'ethers/lib/utils';
@@ -24,10 +23,9 @@ export abstract class TornadoFeeOracle implements ITornadoFeeOracle {
   protected provider: JsonRpcProvider;
 
   public constructor(
-    public version: 4 | 5,
+    public version: 4 | 5 | 6,
     protected chainId: ChainId,
     rpcUrl: string,
-    protected oracle: GasPriceOracle,
   ) {
     this.provider = new ethers.providers.JsonRpcProvider(rpcUrl);
   }
@@ -122,12 +120,41 @@ export abstract class TornadoFeeOracle implements ITornadoFeeOracle {
    * @param {number} [bumpPercent=0] Gas bump percent to prioritize transaction
    * @returns {Promise<GasPriceParams>} Estimated gas price info in WEI (hexed) - legacy object with gasPrice property or
    * EIP-1559 object with maxFeePerGas and maxPriorityFeePerGas properties
+   * NOTICE: It is recommended to bump fees for EIP-1559 transactions, because they can bump 12.5% per block
    */
   async getGasPriceParams(speed?: LegacyGasPriceKey, bumpPercent: number = 0): Promise<GasPriceParams> {
     // Use instant for BSC, because on this chain "fast" and "instant" differs more than third and "fast" transaction can take hours
     if (!speed) speed = this.chainId === ChainId.BSC ? 'instant' : 'fast';
     try {
-      return await this.oracle.getTxGasParams({ legacySpeed: speed, bumpPercent });
+      const [block, gasPrice, priorityFee] = await Promise.all([
+        this.provider.getBlock('latest'),
+        this.provider.getGasPrice(),
+        (async () => {
+          try {
+            return BigNumber.from(
+              (await this.provider.send('eth_maxPriorityFeePerGas', [])) || parseUnits('1.5', 'gwei'),
+            );
+          } catch {
+            return parseUnits('1.5', 'gwei');
+          }
+        })(),
+      ]);
+
+      if (block?.baseFeePerGas?.gt(0)) {
+        const maxPriorityFeePerGas = priorityFee.toHexString();
+        const maxFeePerGas = bump(block.baseFeePerGas as BigNumber, bumpPercent)
+          .add(priorityFee)
+          .toHexString();
+
+        return {
+          maxFeePerGas,
+          maxPriorityFeePerGas,
+        };
+      }
+
+      return {
+        gasPrice: bump(gasPrice, bumpPercent).toHexString(),
+      };
     } catch (e) {
       return { gasPrice: bump(fromGweiToWeiHex(defaultGasPrices[this.chainId][speed]), bumpPercent).toHexString() };
     }
@@ -261,17 +288,19 @@ export abstract class TornadoFeeOracle implements ITornadoFeeOracle {
     const { gasPrice, gasLimit } = await this.getGasParams({ tx, txType, predefinedGasLimit, predefinedGasPrice });
     const gasCosts = BigNumber.from(gasPrice).mul(gasLimit);
 
-    if ((this.chainId === ChainId.MAINNET || this.chainId === ChainId.GOERLI) && currency.toLowerCase() != 'eth') {
+    const hasTokenPrice =
-      if (!tokenPriceInEth) {
+      typeof tokenPriceInEth === 'object' && typeof (tokenPriceInEth as BigNumber)?.gt === 'function'
-        console.error('Token price is required argument, if not native chain token is withdrawed');
+        ? Boolean((tokenPriceInEth as BigNumber).gt(0))
-        return '0';
+        : Boolean(tokenPriceInEth);
-      }
 
+    if (hasTokenPrice) {
       if (txType === 'user_withdrawal' && refundInEth === undefined)
         refundInEth = this.calculateRefundInETH(gasPrice, currency.toLowerCase() as InstanceTokenSymbol);
 
       const feeInEth = BigNumber.from(gasCosts).add(refundInEth || 0);
-      return convertETHToToken(feeInEth, decimals, tokenPriceInEth).add(relayerFee).toHexString();
+      return convertETHToToken(feeInEth, decimals, tokenPriceInEth as BigNumberish)
+        .add(relayerFee)
+        .toHexString();
     }
 
     return BigNumber.from(gasCosts).add(relayerFee).toHexString();

src/feeOracleV4.ts

@@ -1,22 +1,14 @@
 import { defaultWithdrawalGasLimit } from './config';
 import { TornadoFeeOracle } from './feeOracle';
-import { ITornadoFeeOracle, TransactionData, TxType, LegacyGasPrices } from './types';
+import { ITornadoFeeOracle, TransactionData, TxType } from './types';
-import { GasPriceOracle } from '@tornado/gas-price-oracle';
 import { bump } from './utils';
 
 /**
  * Oracle for V4 (old-version) transactions - estimates fee with predefined gas limit and without smart bumping
  */
 export class TornadoFeeOracleV4 extends TornadoFeeOracle implements ITornadoFeeOracle {
-  public constructor(chainId: number, rpcUrl: string, defaultGasPrices?: LegacyGasPrices) {
+  public constructor(chainId: number, rpcUrl: string) {
-    const oracleConfig = {
+    super(4, chainId, rpcUrl);
-      chainId,
-      defaultRpc: rpcUrl,
-      defaultFallbackGasPrices: defaultGasPrices,
-    };
-    const gasPriceOracle = new GasPriceOracle(oracleConfig);
-
-    super(4, chainId, rpcUrl, gasPriceOracle);
   }
 
   async getGasLimit(tx?: TransactionData, type: TxType = 'other', bumpPercent: number = 0): Promise<number> {

src/feeOracleV5.ts

@@ -1,14 +1,6 @@
 import { ChainId } from './config';
 import { TornadoFeeOracle } from './feeOracle';
-import {
+import { ITornadoFeeOracle, TransactionData, TxType, LegacyGasPriceKey, GasPriceParams } from './types';
-  ITornadoFeeOracle,
-  TransactionData,
-  TxType,
-  LegacyGasPrices,
-  LegacyGasPriceKey,
-  GasPriceParams,
-} from './types';
-import { GasPriceOracle } from '@tornado/gas-price-oracle';
 import { bump } from './utils';
 import { TornadoFeeOracleV4 } from './feeOracleV4';
 
@@ -18,20 +10,10 @@ import { TornadoFeeOracleV4 } from './feeOracleV4';
 export class TornadoFeeOracleV5 extends TornadoFeeOracle implements ITornadoFeeOracle {
   private fallbackFeeOracle: TornadoFeeOracleV4;
 
-  public constructor(chainId: number, rpcUrl: string, defaultGasPrices?: LegacyGasPrices) {
+  public constructor(chainId: number, rpcUrl: string) {
-    const oracleConfig = {
+    super(5, chainId, rpcUrl);
-      chainId,
-      defaultRpc: rpcUrl,
-      minPriority: chainId === ChainId.MAINNET || chainId === ChainId.GOERLI ? 2 : chainId === ChainId.BSC ? 3 : 0.05,
-      percentile: 5,
-      blocksCount: 20,
-      defaultFallbackGasPrices: defaultGasPrices,
-    };
-    const gasPriceOracle = new GasPriceOracle(oracleConfig);
 
-    super(5, chainId, rpcUrl, gasPriceOracle);
+    this.fallbackFeeOracle = new TornadoFeeOracleV4(chainId, rpcUrl);
-
-    this.fallbackFeeOracle = new TornadoFeeOracleV4(chainId, rpcUrl, defaultGasPrices);
   }
 
   async getGasLimit(tx?: TransactionData, type: TxType = 'other', bumpPercent: number = 20): Promise<number> {

src/feeOracleV6.ts

@@ -0,0 +1,73 @@
+import { ChainId } from './config';
+import { TornadoFeeOracle } from './feeOracle';
+import {
+  ITornadoFeeOracle,
+  TransactionData,
+  TxType,
+  LegacyGasPriceKey,
+  GasPriceParams,
+  GetWithdrawalFeeViaRelayerInput,
+  HexadecimalStringifiedNumber,
+} from './types';
+import { bump } from './utils';
+import { TornadoFeeOracleV5 } from './feeOracleV5';
+
+/**
+ * V6 version that would cover every available networks and relayers
+ *
+ * Ported from https://git.tornado.ws/tornadocontrib/tornado-core/src/branch/main/src/fees.ts and has been verified over time
+ */
+export class TornadoFeeOracleV6 extends TornadoFeeOracle implements ITornadoFeeOracle {
+  private fallbackFeeOracle: TornadoFeeOracleV5;
+  // Override value for BSC (Since old relayers use static value of 3.3 gwei)
+  public overrideGasPrice?: GasPriceParams;
+
+  public constructor(chainId: number, rpcUrl: string, overrideGasPrice?: GasPriceParams) {
+    super(6, chainId, rpcUrl);
+
+    this.fallbackFeeOracle = new TornadoFeeOracleV5(chainId, rpcUrl);
+    this.overrideGasPrice = overrideGasPrice;
+  }
+
+  /**
+   * Apply static 10% gasLimit premium as it wouldn't change across nodes or relayers
+   */
+  async getGasLimit(tx?: TransactionData, type: TxType = 'other', bumpPercent: number = 10): Promise<number> {
+    if (!tx || Object.keys(tx).length === 0) return this.fallbackFeeOracle.getGasLimit(tx, type, bumpPercent);
+
+    const fetchedGasLimit = await this.provider.estimateGas(tx);
+    return bump(fetchedGasLimit, bumpPercent).toNumber();
+  }
+
+  /**
+   * Apply static 50% gasPrice premium for EIP-1559 enabled networks
+   *
+   * Because Tornado Transactions are censored from block builders
+   * it would take some time to be confirmed after when the transaction is broadcasted.
+   *
+   * We apply 50% premium to combat basefee spike (ethers.js uses 100% premium by default)
+   * (Can spike 12.5% per block accoring to the EIP-1559 metrics https://metamask.io/1559/)
+   */
+  async getGasPriceParams(speed?: LegacyGasPriceKey, bumpPercent?: number): Promise<GasPriceParams> {
+    if (this.overrideGasPrice) {
+      return this.overrideGasPrice;
+    }
+    if (typeof bumpPercent === 'undefined') {
+      bumpPercent = this.chainId === ChainId.BSC ? undefined : 50;
+    }
+    return super.getGasPriceParams(speed, bumpPercent);
+  }
+
+  /**
+   * Apply 20% premium from the calculated fee from UI, applies 5% fee from relayer to prevent arbitrage from refund
+   */
+  async calculateWithdrawalFeeViaRelayer(
+    params: GetWithdrawalFeeViaRelayerInput & { premium?: number },
+  ): Promise<HexadecimalStringifiedNumber> {
+    const fees = await super.calculateWithdrawalFeeViaRelayer(params);
+
+    const premium = params.premium || (params.txType === 'user_withdrawal' ? 20 : 5);
+
+    return bump(fees, premium).toHexString();
+  }
+}

src/index.ts

@@ -1,3 +1,4 @@
 export * from './feeOracleV4';
 export * from './feeOracleV5';
+export * from './feeOracleV6';
 export * from './tokenPriceOracle';

src/tokenPriceOracle.ts

@@ -1,4 +1,4 @@
-import { MultiCall } from './contracts/MulticallAbi';
+import { Multicall3 } from './contracts/MulticallAbi';
 import { ITornadoPriceOracle, Token, TokenPrices, TokenSymbol } from './types';
 import { MulticallAbi, OffchainOracleAbi } from './contracts';
 import { getMultiCallContract, getOffchainOracleContract } from './contracts/factories';
@@ -49,9 +49,10 @@ export class TokenPriceOracle implements ITornadoPriceOracle {
     rpcUrl: string,
     private tokens: Token[] = tornadoTokens,
     private defaultTokenPrices: TokenPrices = defaultTornadoTokenPrices,
+    chainId?: ChainId,
   ) {
     this.provider = new ethers.providers.JsonRpcProvider(rpcUrl);
-    this.oracle = getOffchainOracleContract(this.provider);
+    this.oracle = getOffchainOracleContract(this.provider, chainId);
     this.multiCall = getMultiCallContract(this.provider);
   }
 
@@ -65,10 +66,11 @@ export class TokenPriceOracle implements ITornadoPriceOracle {
    * @param {Token[]} [tokens] Tokens array
    * @returns Valid structure to provide to MultiCall contract
    */
-  private prepareCallData(tokens: Token[] = this.tokens): MultiCall.CallStruct[] {
+  private prepareCallData(tokens: Token[] = this.tokens): Multicall3.Call3Struct[] {
     return tokens.map((token) => ({
-      to: this.oracle.address,
+      target: this.oracle.address,
-      data: this.oracle.interface.encodeFunctionData('getRateToEth', [token.tokenAddress, true]),
+      allowFailure: true,
+      callData: this.oracle.interface.encodeFunctionData('getRateToEth', [token.tokenAddress, true]),
     }));
   }
 
@@ -82,17 +84,17 @@ export class TokenPriceOracle implements ITornadoPriceOracle {
       if (!tokens?.length) return {};
 
       const callData = this.prepareCallData(tokens);
-      const { results, success } = await this.multiCall.multicall(callData);
+      const results = await this.multiCall.callStatic.aggregate3(callData);
       const prices: TokenPrices = {};
 
       for (let i = 0; i < results.length; i++) {
         const tokenSymbol = tokens[i].symbol.toLowerCase() as TokenSymbol;
-        if (!success[i]) {
+        if (!results[i].success) {
           if (this.defaultTokenPrices[tokenSymbol]) prices[tokenSymbol] = this.defaultTokenPrices[tokenSymbol];
           continue;
         }
 
-        const decodedRate = defaultAbiCoder.decode(['uint256'], results[i]).toString();
+        const decodedRate = defaultAbiCoder.decode(['uint256'], results[i].returnData).toString();
         const tokenDecimals = BigNumber.from(10).pow(tokens[i].decimals);
         const ethDecimals = BigNumber.from(10).pow(18);
         const price = BigNumber.from(decodedRate).mul(tokenDecimals).div(ethDecimals);

src/types.ts

@@ -1,13 +1,19 @@
 import { BigNumberish, BytesLike } from 'ethers';
-import { GasPriceKey, GetTxGasParamsRes } from '@tornado/gas-price-oracle/lib/services';
 import { AvailableTokenSymbols } from '@tornado/tornado-config';
 import { InstanceTokenSymbol } from './config';
 
 // Type for big hexadecimal numbers, like 0x1eff87f47e37a0
 export type HexadecimalStringifiedNumber = string;
 
-export type LegacyGasPriceKey = GasPriceKey;
+export type LegacyGasPriceKey = 'instant' | 'fast' | 'standard' | 'low';
-export type GasPriceParams = GetTxGasParamsRes;
+export type GasPriceParams =
+  | {
+      gasPrice: string;
+    }
+  | {
+      maxFeePerGas: string;
+      maxPriorityFeePerGas: string;
+    };
 export type LegacyGasPrices = {
   [gasPriceType in LegacyGasPriceKey]: number;
 };

yarn.lock

@@ -369,15 +369,6 @@
     "@jridgewell/resolve-uri" "^3.0.3"
     "@jridgewell/sourcemap-codec" "^1.4.10"
 
-"@tornado/gas-price-oracle@^0.5.3":
-  version "0.5.3"
-  resolved "https://git.tornado.ws/api/packages/tornado-packages/npm/%40tornado%2Fgas-price-oracle/-/0.5.3/gas-price-oracle-0.5.3.tgz#fb5423dddee2f52edbc16174c5ddce90bea5413d"
-  integrity sha512-LpVfPiPIz3FOmJdiqJf/yoeO5n9/Pd5jgtdY+6hB9lNW0AiWhylhpScojICViS+3OL9QC8CoTlgr+kbfGeO9pQ==
-  dependencies:
-    axios "^0.21.2"
-    bignumber.js "^9.0.0"
-    node-cache "^5.1.2"
-
 "@tornado/tornado-config@^2.0.0":
   version "2.0.0"
   resolved "https://git.tornado.ws/api/packages/tornado-packages/npm/%40tornado%2Ftornado-config/-/2.0.0/tornado-config-2.0.0.tgz#52bbc179ecb2385f71b4d56e060b68e7dd6fb8b4"
@@ -478,13 +469,6 @@ array-back@^4.0.1, array-back@^4.0.2:
   resolved "https://registry.yarnpkg.com/array-back/-/array-back-4.0.2.tgz#8004e999a6274586beeb27342168652fdb89fa1e"
   integrity sha512-NbdMezxqf94cnNfWLL7V/im0Ub+Anbb0IoZhvzie8+4HJ4nMQuzHuy49FkGYCJK2yAloZ3meiB6AVMClbrI1vg==
 
-axios@^0.21.2:
-  version "0.21.4"
-  resolved "https://registry.yarnpkg.com/axios/-/axios-0.21.4.tgz#c67b90dc0568e5c1cf2b0b858c43ba28e2eda575"
-  integrity sha512-ut5vewkiu8jjGBdqpM44XxjuCjq9LAKeHVmoVfHVzy8eHgxxq8SbAVQNovDA8mVi05kP0Ea/n/UzcSHcTJQfNg==
-  dependencies:
-    follow-redirects "^1.14.0"
-
 balanced-match@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.2.tgz#e83e3a7e3f300b34cb9d87f615fa0cbf357690ee"
@@ -495,7 +479,7 @@ bech32@1.1.4:
   resolved "https://registry.yarnpkg.com/bech32/-/bech32-1.1.4.tgz#e38c9f37bf179b8eb16ae3a772b40c356d4832e9"
   integrity sha512-s0IrSOzLlbvX7yp4WBfPITzpAU8sqQcpsmwXDiKwrG4r491vwCO/XpejasRNl0piBMe/DvP4Tz0mIS/X1DPJBQ==
 
-bignumber.js@^9.0.0, bignumber.js@^9.1.1:
+bignumber.js@^9.1.1:
   version "9.1.1"
   resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.1.1.tgz#c4df7dc496bd849d4c9464344c1aa74228b4dac6"
   integrity sha512-pHm4LsMJ6lzgNGVfZHjMoO8sdoRhOzOH4MLmY65Jg70bpxCKu5iOHNJyfF6OyvYw7t8Fpf35RuzUyqnQsj8Vig==
@@ -567,11 +551,6 @@ chokidar@^3.5.2:
   optionalDependencies:
     fsevents "~2.3.2"
 
-clone@2.x:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.2.tgz#1b7f4b9f591f1e8f83670401600345a02887435f"
-  integrity sha512-3Pe/CF1Nn94hyhIYpjtiLhdCoEoz0DqQ+988E9gmeEdQZlojxnOb74wctFyuwWQHzqyf9X7C7MG8juUpqBJT8w==
-
 color-convert@^1.9.0:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
@@ -718,11 +697,6 @@ find-replace@^3.0.0:
   dependencies:
     array-back "^3.0.1"
 
-follow-redirects@^1.14.0:
-  version "1.15.2"
-  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.15.2.tgz#b460864144ba63f2681096f274c4e57026da2c13"
-  integrity sha512-VQLG33o04KaQ8uYi2tVNbdrWp1QWxNNea+nmIB4EVM28v0hmP17z7aG1+wAkNzVq4KeXTq3221ye5qTJP91JwA==
-
 fs-extra@^7.0.0:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-7.0.1.tgz#4f189c44aa123b895f722804f55ea23eadc348e9"
@@ -901,13 +875,6 @@ ms@^2.1.1:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
   integrity sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==
 
-node-cache@^5.1.2:
-  version "5.1.2"
-  resolved "https://registry.yarnpkg.com/node-cache/-/node-cache-5.1.2.tgz#f264dc2ccad0a780e76253a694e9fd0ed19c398d"
-  integrity sha512-t1QzWwnk4sjLWaQAS8CHgOJ+RAfmHpxFWmc36IWTiWHQfs0w5JDMBS1b1ZxQteo0vVVuWJvIUKHDkkeK7vIGCg==
-  dependencies:
-    clone "2.x"
-
 nodemon@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/nodemon/-/nodemon-3.0.1.tgz#affe822a2c5f21354466b2fc8ae83277d27dadc7"