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Просмотр файла: transactionBuilder.js

"use strict";
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exports.TransactionBuilder = void 0;
const statics_1 = require("@bitgo/statics");
const ethereumjs_abi_1 = __importDefault(require("ethereumjs-abi"));
const bignumber_js_1 = __importDefault(require("bignumber.js"));
const ethUtil = __importStar(require("ethereumjs-util"));
const tx_1 = require("@ethereumjs/tx");
const sdk_core_1 = require("@bitgo/sdk-core");
const keyPair_1 = require("./keyPair");
const iface_1 = require("./iface");
const utils_1 = require("./utils");
const walletUtil_1 = require("./walletUtil");
const transaction_1 = require("./transaction");
const DEFAULT_M = 3;
/**
 * EthereumLike transaction builder.
 */
class TransactionBuilder extends sdk_core_1.BaseTransactionBuilder {
    /**
     * Public constructor.
     *
     * @param _coinConfig
     */
    constructor(_coinConfig) {
        super(_coinConfig);
        this._common = (0, utils_1.getCommon)(this._coinConfig.network);
        this._type = sdk_core_1.TransactionType.Send;
        this._counter = 0;
        this._value = '0';
        this._walletOwnerAddresses = [];
        this._forwarderVersion = 0;
        this._walletVersion = 0;
        this.transaction = new transaction_1.Transaction(this._coinConfig, this._common);
        this._walletSimpleByteCode = '';
    }
    /** @inheritdoc */
    async buildImplementation() {
        const transactionData = this.getTransactionData();
        if (this._txSignature) {
            Object.assign(transactionData, this._txSignature);
        }
        this.transaction.setTransactionType(this._type);
        transactionData.from = this._sourceKeyPair ? this._sourceKeyPair.getAddress() : undefined;
        this.transaction.setTransactionData(transactionData, this._transfer ? this._transfer.getIsFirstSigner() : undefined);
        // Build and sign a new transaction based on the latest changes
        if (this._sourceKeyPair && this._sourceKeyPair.getKeys().prv) {
            await this.transaction.sign(this._sourceKeyPair);
        }
        return this.transaction;
    }
    getTransactionData() {
        switch (this._type) {
            case sdk_core_1.TransactionType.WalletInitialization:
                return this.buildWalletInitializationTransaction(this._walletVersion);
            case sdk_core_1.TransactionType.RecoveryWalletDeployment:
                return this.buildBase(this._data);
            case sdk_core_1.TransactionType.Send:
            case sdk_core_1.TransactionType.SendERC721:
            case sdk_core_1.TransactionType.SendERC1155:
                return this.buildSendTransaction();
            case sdk_core_1.TransactionType.AddressInitialization:
                return this.buildAddressInitializationTransaction();
            case sdk_core_1.TransactionType.FlushTokens:
                return this.buildFlushTokensTransaction();
            case sdk_core_1.TransactionType.FlushCoins:
                return this.buildFlushCoinsTransaction();
            case sdk_core_1.TransactionType.SingleSigSend:
                return this.buildBase('0x');
            case sdk_core_1.TransactionType.ContractCall:
                return this.buildGenericContractCallTransaction();
            default:
                throw new sdk_core_1.BuildTransactionError('Unsupported transaction type');
        }
    }
    /** @inheritdoc */
    fromImplementation(rawTransaction, isFirstSigner) {
        let tx;
        if (/^0x?[0-9a-f]{1,}$/.test(rawTransaction.toLowerCase())) {
            tx = transaction_1.Transaction.fromSerialized(this._coinConfig, this._common, rawTransaction, isFirstSigner);
            this.loadBuilderInput(tx.toJson(), isFirstSigner);
        }
        else {
            const txData = JSON.parse(rawTransaction);
            tx = new transaction_1.Transaction(this._coinConfig, txData);
        }
        return tx;
    }
    /**
     * Load the builder data using the deserialized transaction
     *
     * @param {TxData} transactionJson the deserialized transaction json
     * @param {boolean} isFirstSigner if the transaction is being signed by the first signer
     */
    loadBuilderInput(transactionJson, isFirstSigner) {
        const decodedType = (0, utils_1.classifyTransaction)(transactionJson.data);
        this.type(decodedType);
        this.counter(transactionJson.nonce);
        this.value(transactionJson.value);
        if (transactionJson._type === iface_1.ETHTransactionType.LEGACY) {
            this.fee({
                fee: transactionJson.gasPrice,
                gasPrice: transactionJson.gasPrice,
                gasLimit: transactionJson.gasLimit,
            });
        }
        else {
            this.fee({
                gasLimit: transactionJson.gasLimit,
                fee: transactionJson.maxFeePerGas,
                eip1559: {
                    maxFeePerGas: transactionJson.maxFeePerGas,
                    maxPriorityFeePerGas: transactionJson.maxPriorityFeePerGas,
                },
            });
        }
        if ((0, utils_1.hasSignature)(transactionJson)) {
            this._txSignature = { v: transactionJson.v, r: transactionJson.r, s: transactionJson.s };
        }
        this.setTransactionTypeFields(decodedType, transactionJson, isFirstSigner);
    }
    setTransactionTypeFields(decodedType, transactionJson, isFirstSigner) {
        switch (decodedType) {
            case sdk_core_1.TransactionType.WalletInitialization:
                const { owners, salt } = (0, utils_1.decodeWalletCreationData)(transactionJson.data);
                owners.forEach((element) => {
                    this.owner(element);
                });
                if (salt) {
                    this.salt(salt);
                    this.walletVersion(1);
                    this.setContract(transactionJson.to);
                }
                break;
            case sdk_core_1.TransactionType.RecoveryWalletDeployment:
                this.data(transactionJson.data);
                break;
            case sdk_core_1.TransactionType.FlushTokens:
                this.setContract(transactionJson.to);
                const { forwarderAddress, tokenAddress, forwarderVersion } = (0, utils_1.decodeFlushTokensData)(transactionJson.data, transactionJson.to);
                if (forwarderVersion === 4) {
                    this.forwarderVersion(4);
                }
                this.forwarderAddress(forwarderAddress);
                this.tokenAddress(tokenAddress);
                break;
            case sdk_core_1.TransactionType.FlushCoins:
                this.setContract(transactionJson.to);
                break;
            case sdk_core_1.TransactionType.Send:
            case sdk_core_1.TransactionType.SendERC1155:
            case sdk_core_1.TransactionType.SendERC721:
                this.setContract(transactionJson.to);
                this._transfer = this.transfer(transactionJson.data, isFirstSigner);
                break;
            case sdk_core_1.TransactionType.AddressInitialization:
                this.setContract(transactionJson.to);
                const { baseAddress, addressCreationSalt, feeAddress } = (0, utils_1.decodeForwarderCreationData)(transactionJson.data);
                if (baseAddress && addressCreationSalt) {
                    this.baseAddress(baseAddress);
                    this.salt(addressCreationSalt);
                    if (feeAddress) {
                        this.feeAddress(feeAddress);
                        this.forwarderVersion(4);
                    }
                    else {
                        this.forwarderVersion(1);
                    }
                    const forwarderImplementationAddress = this._coinConfig.network
                        .forwarderImplementationAddress;
                    if (forwarderImplementationAddress) {
                        this.initCode(forwarderImplementationAddress);
                    }
                }
                break;
            case sdk_core_1.TransactionType.SingleSigSend:
                this.setContract(transactionJson.to);
                break;
            case sdk_core_1.TransactionType.ContractCall:
                this.setContract(transactionJson.to);
                this.data(transactionJson.data);
                break;
            default:
                throw new sdk_core_1.BuildTransactionError('Unsupported transaction type');
            // TODO: Add other cases of deserialization
        }
    }
    /** @inheritdoc */
    signImplementation(key) {
        const signer = new keyPair_1.KeyPair({ prv: key.key });
        if (this._type === sdk_core_1.TransactionType.WalletInitialization && this._walletOwnerAddresses.length === 0) {
            throw new sdk_core_1.SigningError('Cannot sign an wallet initialization transaction without owners');
        }
        if (this._sourceKeyPair) {
            throw new sdk_core_1.SigningError('Cannot sign multiple times a non send-type transaction');
        }
        // Signing the transaction is an async operation, so save the source and leave the actual
        // signing for the build step
        this._sourceKeyPair = signer;
        return this.transaction;
    }
    /** @inheritdoc */
    validateAddress(address) {
        if (!(0, utils_1.isValidEthAddress)(address.address)) {
            throw new sdk_core_1.BuildTransactionError('Invalid address ' + address.address);
        }
    }
    /** @inheritdoc */
    validateKey(key) {
        if (!((0, sdk_core_1.isValidXprv)(key.key) || (0, sdk_core_1.isValidPrv)(key.key))) {
            throw new sdk_core_1.BuildTransactionError('Invalid key');
        }
    }
    /**
     * Validate the raw transaction is either a JSON or
     * a hex encoded transaction
     *
     * @param {any} rawTransaction The raw transaction to be validated
     */
    validateRawTransaction(rawTransaction) {
        if (!rawTransaction) {
            throw new sdk_core_1.InvalidTransactionError('Raw transaction is empty');
        }
        if (typeof rawTransaction === 'string') {
            if (/^0x?[0-9a-f]{1,}$/.test(rawTransaction.toLowerCase())) {
                const txBytes = ethUtil.toBuffer(ethUtil.addHexPrefix(rawTransaction.toLowerCase()));
                if (!this.isEip1559Txn(txBytes) && !this.isRLPDecodable(txBytes)) {
                    throw new sdk_core_1.ParseTransactionError('There was error in decoding the hex string');
                }
            }
            else {
                try {
                    JSON.parse(rawTransaction);
                }
                catch (e) {
                    throw new sdk_core_1.ParseTransactionError('There was error in parsing the JSON string');
                }
            }
        }
        else {
            throw new sdk_core_1.InvalidTransactionError('Transaction is not a hex string or stringified json');
        }
    }
    isEip1559Txn(txn) {
        try {
            tx_1.FeeMarketEIP1559Transaction.fromSerializedTx(txn);
            return true;
        }
        catch (_) {
            return false;
        }
    }
    isRLPDecodable(bytes) {
        try {
            ethUtil.rlp.decode(bytes);
            return true;
        }
        catch (_) {
            return false;
        }
    }
    validateBaseTransactionFields() {
        if (this._fee === undefined || (!this._fee.fee && !this._fee.gasPrice && !this._fee.eip1559)) {
            throw new sdk_core_1.BuildTransactionError('Invalid transaction: missing fee');
        }
        if (this._common === undefined) {
            throw new sdk_core_1.BuildTransactionError('Invalid transaction: network common');
        }
        if (this._counter === undefined) {
            throw new sdk_core_1.BuildTransactionError('Invalid transaction: missing address counter');
        }
    }
    /** @inheritdoc */
    validateTransaction(transaction) {
        this.validateBaseTransactionFields();
        switch (this._type) {
            case sdk_core_1.TransactionType.WalletInitialization:
                this.validateWalletInitializationFields();
                break;
            case sdk_core_1.TransactionType.RecoveryWalletDeployment:
                this.validateDataField();
                break;
            case sdk_core_1.TransactionType.Send:
            case sdk_core_1.TransactionType.SendERC721:
            case sdk_core_1.TransactionType.SendERC1155:
                this.validateContractAddress();
                break;
            case sdk_core_1.TransactionType.AddressInitialization:
                this.validateContractAddress();
                break;
            case sdk_core_1.TransactionType.FlushCoins:
                this.validateContractAddress();
                break;
            case sdk_core_1.TransactionType.FlushTokens:
                this.validateContractAddress();
                this.validateForwarderAddress();
                this.validateTokenAddress();
                break;
            case sdk_core_1.TransactionType.SingleSigSend:
                // for single sig sends, the contract address is actually the recipient
                this.validateContractAddress();
                break;
            case sdk_core_1.TransactionType.StakingLock:
            case sdk_core_1.TransactionType.StakingUnlock:
            case sdk_core_1.TransactionType.StakingVote:
            case sdk_core_1.TransactionType.StakingUnvote:
            case sdk_core_1.TransactionType.StakingActivate:
            case sdk_core_1.TransactionType.StakingWithdraw:
                break;
            case sdk_core_1.TransactionType.ContractCall:
                this.validateContractAddress();
                this.validateDataField();
                break;
            default:
                throw new sdk_core_1.BuildTransactionError('Unsupported transaction type');
        }
    }
    /**
     * Check wallet owner addresses for wallet initialization transactions are valid or throw.
     */
    validateWalletInitializationFields() {
        if (this._walletOwnerAddresses === undefined) {
            throw new sdk_core_1.BuildTransactionError('Invalid transaction: missing wallet owners');
        }
        if (this._walletOwnerAddresses.length !== 3) {
            throw new sdk_core_1.BuildTransactionError(`Invalid transaction: wrong number of owners -- required: 3, found: ${this._walletOwnerAddresses.length}`);
        }
    }
    /**
     * Check if a token address for the tx was defined or throw.
     */
    validateTokenAddress() {
        if (this._tokenAddress === undefined) {
            throw new sdk_core_1.BuildTransactionError('Invalid transaction: missing token address');
        }
    }
    /**
     * Check if a forwarder address for the tx was defined or throw.
     */
    validateForwarderAddress() {
        if (this._forwarderAddress === undefined) {
            throw new sdk_core_1.BuildTransactionError('Invalid transaction: missing forwarder address');
        }
    }
    /**
     * Check if a contract address for the wallet was defined or throw.
     */
    validateContractAddress() {
        if (this._contractAddress === undefined) {
            throw new sdk_core_1.BuildTransactionError('Invalid transaction: missing contract address');
        }
    }
    /**
     * Checks if a contract call data field was defined or throws otherwise
     */
    validateDataField() {
        if (!this._data) {
            throw new sdk_core_1.BuildTransactionError('Invalid transaction: missing contract call data field');
        }
    }
    setContract(address) {
        if (address === undefined) {
            throw new sdk_core_1.BuildTransactionError('Undefined recipient address');
        }
        this.contract(address);
    }
    validateValue(value) {
        if (value.isLessThan(0)) {
            throw new sdk_core_1.BuildTransactionError('Value cannot be below less than zero');
        }
        // TODO: validate the amount is not bigger than the max amount in each Eth family coin
    }
    // region Common builder methods
    /**
     * The type of transaction being built.
     *
     * @param {TransactionType} type
     */
    type(type) {
        this._type = type;
    }
    /**
     * Set the transaction fees. Low fees may get a transaction rejected or never picked up by bakers.
     *
     * @param {Fee} fee Baker fees. May also include the maximum gas to pay
     */
    fee(fee) {
        this.validateValue(new bignumber_js_1.default(fee.fee));
        if (fee.gasLimit) {
            this.validateValue(new bignumber_js_1.default(fee.gasLimit));
        }
        if (fee.eip1559) {
            this.validateValue(new bignumber_js_1.default(fee.eip1559.maxFeePerGas));
            this.validateValue(new bignumber_js_1.default(fee.eip1559.maxPriorityFeePerGas));
        }
        if (fee.gasPrice) {
            this.validateValue(new bignumber_js_1.default(fee.gasPrice));
        }
        this._fee = fee;
    }
    /**
     * Set the transaction counter to prevent submitting repeated transactions.
     *
     * @param {number} counter The counter to use
     */
    counter(counter) {
        if (counter < 0) {
            throw new sdk_core_1.BuildTransactionError(`Invalid counter: ${counter}`);
        }
        this._counter = counter;
    }
    /**
     * The value to send along with this transaction. 0 by default
     *
     * @param {string} value The value to send along with this transaction
     */
    value(value) {
        this._value = value;
    }
    // set args that are required for all types of eth transactions
    buildBase(data) {
        const baseParams = {
            gasLimit: this._fee.gasLimit,
            nonce: this._counter,
            data: data,
            chainId: this._common.chainIdBN().toString(),
            value: this._value,
            to: this._contractAddress,
        };
        if (this._fee.eip1559) {
            return {
                ...baseParams,
                _type: iface_1.ETHTransactionType.EIP1559,
                maxFeePerGas: this._fee.eip1559.maxFeePerGas,
                maxPriorityFeePerGas: this._fee.eip1559.maxPriorityFeePerGas,
            };
        }
        else {
            return {
                ...baseParams,
                _type: iface_1.ETHTransactionType.LEGACY,
                gasPrice: this._fee?.gasPrice ?? this._fee.fee,
                v: this.getFinalV(),
            };
        }
    }
    // endregion
    // region WalletInitialization builder methods
    /**
     * Set one of the owners of the multisig wallet.
     *
     * @param {string} address An Ethereum address
     */
    owner(address) {
        if (this._type !== sdk_core_1.TransactionType.WalletInitialization) {
            throw new sdk_core_1.BuildTransactionError('Multisig wallet owner can only be set for initialization transactions');
        }
        if (this._walletOwnerAddresses.length >= DEFAULT_M) {
            throw new sdk_core_1.BuildTransactionError('A maximum of ' + DEFAULT_M + ' owners can be set for a multisig wallet');
        }
        if (!(0, utils_1.isValidEthAddress)(address)) {
            throw new sdk_core_1.BuildTransactionError('Invalid address: ' + address);
        }
        if (this._walletOwnerAddresses.includes(address)) {
            throw new sdk_core_1.BuildTransactionError('Repeated owner address: ' + address);
        }
        this._walletOwnerAddresses.push(address);
    }
    /**
     * Build a transaction for a generic multisig contract.
     *
     * @returns {TxData} The Ethereum transaction data
     */
    buildWalletInitializationTransaction(walletVersion) {
        const walletInitData = walletVersion === walletUtil_1.defaultWalletVersion
            ? this.getContractData(this._walletOwnerAddresses)
            : (0, utils_1.getV1WalletInitializationData)(this._walletOwnerAddresses, this._salt);
        return this.buildBase(walletInitData);
    }
    /**
     * Returns the smart contract encoded data
     *
     * @param {string[]} addresses - the contract signers
     * @returns {string} - the smart contract encoded data
     */
    getContractData(addresses) {
        const params = [addresses];
        const resultEncodedParameters = ethereumjs_abi_1.default.rawEncode(walletUtil_1.walletSimpleConstructor, params)
            .toString('hex')
            .replace('0x', '');
        return this._walletSimpleByteCode + resultEncodedParameters;
    }
    // endregion
    // region Send builder methods
    contract(address) {
        if (!(0, utils_1.isValidEthAddress)(address)) {
            throw new sdk_core_1.BuildTransactionError('Invalid address: ' + address);
        }
        this._contractAddress = address;
    }
    /**
     * Returns the serialized sendMultiSig contract method data
     *
     * @returns {string} serialized sendMultiSig data
     */
    getSendData() {
        if (!this._transfer) {
            throw new sdk_core_1.BuildTransactionError('Missing transfer information');
        }
        const chainId = this._common.chainIdBN().toString();
        this._transfer.walletVersion(this._walletVersion);
        // This change is made to support new contracts with different encoding type
        return this._transfer.signAndBuild(chainId, this.coinUsesNonPackedEncodingForTxData());
    }
    /**
     * Decide if the coin uses non-packed encoding for tx data
     *
     * @returns {boolean} true if the coin uses non-packed encoding for tx data
     */
    coinUsesNonPackedEncodingForTxData() {
        return (this._walletVersion === 4 || this._coinConfig.features.includes(statics_1.CoinFeature.USES_NON_PACKED_ENCODING_FOR_TXDATA));
    }
    buildSendTransaction() {
        const sendData = this.getSendData();
        const tx = this.buildBase(sendData);
        tx.to = this._contractAddress;
        return tx;
    }
    // endregion
    // region AddressInitialization builder methods
    /**
     * Set the contract transaction nonce to calculate the forwarder address.
     *
     * @param {number} contractCounter The counter to use
     */
    contractCounter(contractCounter) {
        if (contractCounter < 0) {
            throw new sdk_core_1.BuildTransactionError(`Invalid contract counter: ${contractCounter}`);
        }
        this._contractCounter = contractCounter;
    }
    /**
     * Build a transaction to create a forwarder.
     *
     * @returns {TxData} The Ethereum transaction data
     */
    buildAddressInitializationTransaction() {
        const addressInitData = (0, utils_1.getAddressInitDataAllForwarderVersions)(this._forwarderVersion, this._baseAddress, this._salt, this._feeAddress);
        const tx = this.buildBase(addressInitData);
        tx.to = this._contractAddress;
        if (this._contractCounter) {
            tx.deployedAddress = (0, utils_1.calculateForwarderAddress)(this._contractAddress, this._contractCounter);
        }
        if (this._salt && this._initCode) {
            const saltBuffer = ethUtil.setLengthLeft(ethUtil.toBuffer(this._salt), 32);
            const { createForwarderParams, createForwarderTypes } = (0, utils_1.getCreateForwarderParamsAndTypes)(this._baseAddress, saltBuffer, this._feeAddress);
            // Hash the wallet base address and fee address if present with the given salt, so the address directly relies on the base address and fee address
            const calculationSalt = ethUtil.bufferToHex(ethereumjs_abi_1.default.soliditySHA3(createForwarderTypes, createForwarderParams));
            tx.deployedAddress = (0, utils_1.calculateForwarderV1Address)(this._contractAddress, calculationSalt, this._initCode);
        }
        return tx;
    }
    // endregion
    // region flush methods
    /**
     * Set the forwarder address to flush
     *
     * @param {string} address The address to flush
     */
    forwarderAddress(address) {
        if (!(0, utils_1.isValidEthAddress)(address)) {
            throw new sdk_core_1.BuildTransactionError('Invalid address: ' + address);
        }
        this._forwarderAddress = address;
    }
    /**
     * Set the address of the ERC20 token contract that we are flushing tokens for
     *
     * @param {string} address the contract address of the token to flush
     */
    tokenAddress(address) {
        if (!(0, utils_1.isValidEthAddress)(address)) {
            throw new sdk_core_1.BuildTransactionError('Invalid address: ' + address);
        }
        this._tokenAddress = address;
    }
    /**
     * Build a transaction to flush tokens from a forwarder.
     *
     * @returns {TxData} The Ethereum transaction data
     */
    buildFlushTokensTransaction() {
        if (this._forwarderVersion >= 4 && this._contractAddress !== this._forwarderAddress) {
            throw new sdk_core_1.BuildTransactionError('Invalid contract address: ' + this._contractAddress);
        }
        return this.buildBase((0, utils_1.flushTokensData)(this._forwarderAddress, this._tokenAddress, this._forwarderVersion));
    }
    /**
     * Build a transaction to flush tokens from a forwarder.
     *
     * @returns {TxData} The Ethereum transaction data
     */
    buildFlushCoinsTransaction() {
        return this.buildBase((0, utils_1.flushCoinsData)());
    }
    // endregion
    // region generic contract call
    data(encodedCall) {
        const supportedTransactionTypes = [sdk_core_1.TransactionType.ContractCall, sdk_core_1.TransactionType.RecoveryWalletDeployment];
        if (!supportedTransactionTypes.includes(this._type)) {
            throw new sdk_core_1.BuildTransactionError('data can only be set for contract call transaction types');
        }
        this._data = encodedCall;
    }
    buildGenericContractCallTransaction() {
        return this.buildBase(this._data);
    }
    // endregion
    /** @inheritdoc */
    get transaction() {
        return this._transaction;
    }
    /** @inheritdoc */
    set transaction(transaction) {
        this._transaction = transaction;
    }
    /**
     * Get the final v value. Final v is described in EIP-155.
     *
     * @protected for internal use when the enableFinalVField flag is true.
     */
    getFinalV() {
        return ethUtil.addHexPrefix(this._common.chainIdBN().muln(2).addn(35).toString(16));
    }
    /**
     * Set the forwarder version for address to be initialized
     *
     * @param {number} version forwarder version
     */
    forwarderVersion(version) {
        if (version < 0 || version > 4 || version === 3) {
            throw new sdk_core_1.BuildTransactionError(`Invalid forwarder version: ${version}`);
        }
        this._forwarderVersion = version;
    }
    /**
     * Set the salt to create the address using create2
     *
     * @param {string} salt The salt to create the address using create2, hex string
     */
    salt(salt) {
        this._salt = salt;
    }
    /**
     * Take the implementation address for the proxy contract, and get the binary initcode for the associated proxy
     *
     * @param {string} implementationAddress The address of the implementation contract
     */
    initCode(implementationAddress) {
        if (!(0, utils_1.isValidEthAddress)(implementationAddress)) {
            throw new sdk_core_1.BuildTransactionError('Invalid address: ' + implementationAddress);
        }
        this._initCode = (0, utils_1.getProxyInitcode)(implementationAddress);
    }
    /**
     * Set the wallet version for wallet to be initialized
     *
     * @param {number} version wallet version
     */
    walletVersion(version) {
        if (version < 0 || version > 4 || version === 3) {
            throw new sdk_core_1.BuildTransactionError(`Invalid wallet version: ${version}`);
        }
        this._walletVersion = version;
    }
    /**
     * Set the base address of the wallet
     *
     * @param {string} address The wallet contract address
     */
    baseAddress(address) {
        if (!(0, utils_1.isValidEthAddress)(address)) {
            throw new sdk_core_1.BuildTransactionError('Invalid address: ' + address);
        }
        this._baseAddress = address;
    }
    /**
     * Set the fee address of the wallet
     *
     * @param {string} address The fee address of the wallet
     */
    feeAddress(address) {
        if (!(0, utils_1.isValidEthAddress)(address)) {
            throw new sdk_core_1.BuildTransactionError('Invalid address: ' + address);
        }
        this._feeAddress = address;
    }
    /**
     * Get the wallet version for wallet
     */
    getWalletVersion() {
        return this._walletVersion;
    }
}
exports.TransactionBuilder = TransactionBuilder;
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{ BaseCoin as CoinConfig, EthereumNetwork, CoinFeature } from '@bitgo/statics';\nimport EthereumCommon from '@ethereumjs/common';\nimport EthereumAbi from 'ethereumjs-abi';\nimport BigNumber from 'bignumber.js';\nimport * as ethUtil from 'ethereumjs-util';\nimport { FeeMarketEIP1559Transaction } from '@ethereumjs/tx';\n\nimport {\n  BaseAddress,\n  BaseKey,\n  BaseTransaction,\n  BaseTransactionBuilder,\n  BuildTransactionError,\n  InvalidTransactionError,\n  isValidPrv,\n  isValidXprv,\n  ParseTransactionError,\n  SigningError,\n  TransactionType,\n} from '@bitgo/sdk-core';\n\nimport { KeyPair } from './keyPair';\nimport { ETHTransactionType, Fee, SignatureParts, TxData } from './iface';\nimport {\n  calculateForwarderAddress,\n  calculateForwarderV1Address,\n  classifyTransaction,\n  decodeForwarderCreationData,\n  decodeFlushTokensData,\n  decodeWalletCreationData,\n  flushCoinsData,\n  flushTokensData,\n  getAddressInitDataAllForwarderVersions,\n  getCommon,\n  getProxyInitcode,\n  hasSignature,\n  isValidEthAddress,\n  getV1WalletInitializationData,\n  getCreateForwarderParamsAndTypes,\n} from './utils';\nimport { defaultWalletVersion, walletSimpleConstructor } from './walletUtil';\nimport { ERC1155TransferBuilder } from './transferBuilders/transferBuilderERC1155';\nimport { ERC721TransferBuilder } from './transferBuilders/transferBuilderERC721';\nimport { Transaction } from './transaction';\nimport { TransferBuilder } from './transferBuilder';\n\nconst DEFAULT_M = 3;\n\n/**\n * EthereumLike transaction builder.\n */\nexport abstract class TransactionBuilder extends BaseTransactionBuilder {\n  protected _type: TransactionType;\n  // Specifies common chain and hardfork parameters.\n  protected _common: EthereumCommon;\n  protected _sourceKeyPair: KeyPair;\n  private _transaction: Transaction;\n  private _counter: number;\n  private _fee: Fee;\n  protected _value: string;\n\n  // the signature on the external ETH transaction\n  private _txSignature: SignatureParts;\n\n  // Wallet initialization transaction parameters\n  private _walletOwnerAddresses: string[];\n  protected _walletVersion: number;\n\n  // flush tokens parameters\n  private _forwarderAddress: string;\n  private _tokenAddress: string;\n\n  // Send and AddressInitialization transaction specific parameters\n  protected _transfer: TransferBuilder | ERC721TransferBuilder | ERC1155TransferBuilder;\n  private _contractAddress: string;\n  private _contractCounter: number;\n  private _forwarderVersion: number;\n  private _initCode: string;\n  private _baseAddress: string;\n  private _feeAddress: string;\n\n  // generic contract call builder\n  // encoded contract call hex\n  private _data: string;\n\n  // Common parameter for wallet initialization and address initialization transaction\n  private _salt: string;\n\n  // walletsimplebytecode\n  protected _walletSimpleByteCode: string;\n\n  /**\n   * Public constructor.\n   *\n   * @param _coinConfig\n   */\n  constructor(_coinConfig: Readonly<CoinConfig>) {\n    super(_coinConfig);\n    this._common = getCommon(this._coinConfig.network as EthereumNetwork);\n    this._type = TransactionType.Send;\n    this._counter = 0;\n    this._value = '0';\n    this._walletOwnerAddresses = [];\n    this._forwarderVersion = 0;\n    this._walletVersion = 0;\n    this.transaction = new Transaction(this._coinConfig, this._common);\n    this._walletSimpleByteCode = '';\n  }\n\n  /** @inheritdoc */\n  protected async buildImplementation(): Promise<BaseTransaction> {\n    const transactionData = this.getTransactionData();\n\n    if (this._txSignature) {\n      Object.assign(transactionData, this._txSignature);\n    }\n\n    this.transaction.setTransactionType(this._type);\n    transactionData.from = this._sourceKeyPair ? this._sourceKeyPair.getAddress() : undefined;\n    this.transaction.setTransactionData(\n      transactionData,\n      this._transfer ? this._transfer.getIsFirstSigner() : undefined\n    );\n    // Build and sign a new transaction based on the latest changes\n    if (this._sourceKeyPair && this._sourceKeyPair.getKeys().prv) {\n      await this.transaction.sign(this._sourceKeyPair);\n    }\n    return this.transaction;\n  }\n\n  protected getTransactionData(): TxData {\n    switch (this._type) {\n      case TransactionType.WalletInitialization:\n        return this.buildWalletInitializationTransaction(this._walletVersion);\n      case TransactionType.RecoveryWalletDeployment:\n        return this.buildBase(this._data);\n      case TransactionType.Send:\n      case TransactionType.SendERC721:\n      case TransactionType.SendERC1155:\n        return this.buildSendTransaction();\n      case TransactionType.AddressInitialization:\n        return this.buildAddressInitializationTransaction();\n      case TransactionType.FlushTokens:\n        return this.buildFlushTokensTransaction();\n      case TransactionType.FlushCoins:\n        return this.buildFlushCoinsTransaction();\n      case TransactionType.SingleSigSend:\n        return this.buildBase('0x');\n      case TransactionType.ContractCall:\n        return this.buildGenericContractCallTransaction();\n      default:\n        throw new BuildTransactionError('Unsupported transaction type');\n    }\n  }\n\n  /** @inheritdoc */\n  protected fromImplementation(rawTransaction: string, isFirstSigner?: boolean): Transaction {\n    let tx: Transaction;\n    if (/^0x?[0-9a-f]{1,}$/.test(rawTransaction.toLowerCase())) {\n      tx = Transaction.fromSerialized(this._coinConfig, this._common, rawTransaction, isFirstSigner);\n      this.loadBuilderInput(tx.toJson(), isFirstSigner);\n    } else {\n      const txData = JSON.parse(rawTransaction);\n      tx = new Transaction(this._coinConfig, txData);\n    }\n    return tx;\n  }\n\n  /**\n   * Load the builder data using the deserialized transaction\n   *\n   * @param {TxData} transactionJson the deserialized transaction json\n   * @param {boolean} isFirstSigner if the transaction is being signed by the first signer\n   */\n  protected loadBuilderInput(transactionJson: TxData, isFirstSigner?: boolean): void {\n    const decodedType = classifyTransaction(transactionJson.data);\n    this.type(decodedType);\n    this.counter(transactionJson.nonce);\n    this.value(transactionJson.value);\n\n    if (transactionJson._type === ETHTransactionType.LEGACY) {\n      this.fee({\n        fee: transactionJson.gasPrice,\n        gasPrice: transactionJson.gasPrice,\n        gasLimit: transactionJson.gasLimit,\n      });\n    } else {\n      this.fee({\n        gasLimit: transactionJson.gasLimit,\n        fee: transactionJson.maxFeePerGas,\n        eip1559: {\n          maxFeePerGas: transactionJson.maxFeePerGas,\n          maxPriorityFeePerGas: transactionJson.maxPriorityFeePerGas,\n        },\n      });\n    }\n\n    if (hasSignature(transactionJson)) {\n      this._txSignature = { v: transactionJson.v!, r: transactionJson.r!, s: transactionJson.s! };\n    }\n    this.setTransactionTypeFields(decodedType, transactionJson, isFirstSigner);\n  }\n\n  protected setTransactionTypeFields(\n    decodedType: TransactionType,\n    transactionJson: TxData,\n    isFirstSigner?: boolean\n  ): void {\n    switch (decodedType) {\n      case TransactionType.WalletInitialization:\n        const { owners, salt } = decodeWalletCreationData(transactionJson.data);\n        owners.forEach((element) => {\n          this.owner(element);\n        });\n        if (salt) {\n          this.salt(salt as string);\n          this.walletVersion(1);\n          this.setContract(transactionJson.to);\n        }\n        break;\n      case TransactionType.RecoveryWalletDeployment:\n        this.data(transactionJson.data);\n        break;\n      case TransactionType.FlushTokens:\n        this.setContract(transactionJson.to);\n        const { forwarderAddress, tokenAddress, forwarderVersion } = decodeFlushTokensData(\n          transactionJson.data,\n          transactionJson.to\n        );\n        if (forwarderVersion === 4) {\n          this.forwarderVersion(4);\n        }\n        this.forwarderAddress(forwarderAddress);\n        this.tokenAddress(tokenAddress);\n        break;\n      case TransactionType.FlushCoins:\n        this.setContract(transactionJson.to);\n        break;\n      case TransactionType.Send:\n      case TransactionType.SendERC1155:\n      case TransactionType.SendERC721:\n        this.setContract(transactionJson.to);\n        this._transfer = this.transfer(transactionJson.data, isFirstSigner);\n        break;\n      case TransactionType.AddressInitialization:\n        this.setContract(transactionJson.to);\n        const { baseAddress, addressCreationSalt, feeAddress } = decodeForwarderCreationData(transactionJson.data);\n        if (baseAddress && addressCreationSalt) {\n          this.baseAddress(baseAddress);\n          this.salt(addressCreationSalt);\n          if (feeAddress) {\n            this.feeAddress(feeAddress);\n            this.forwarderVersion(4);\n          } else {\n            this.forwarderVersion(1);\n          }\n          const forwarderImplementationAddress = (this._coinConfig.network as EthereumNetwork)\n            .forwarderImplementationAddress as string;\n          if (forwarderImplementationAddress) {\n            this.initCode(forwarderImplementationAddress);\n          }\n        }\n        break;\n      case TransactionType.SingleSigSend:\n        this.setContract(transactionJson.to);\n        break;\n      case TransactionType.ContractCall:\n        this.setContract(transactionJson.to);\n        this.data(transactionJson.data);\n        break;\n      default:\n        throw new BuildTransactionError('Unsupported transaction type');\n      // TODO: Add other cases of deserialization\n    }\n  }\n\n  /** @inheritdoc */\n  protected signImplementation(key: BaseKey): BaseTransaction {\n    const signer = new KeyPair({ prv: key.key });\n    if (this._type === TransactionType.WalletInitialization && this._walletOwnerAddresses.length === 0) {\n      throw new SigningError('Cannot sign an wallet initialization transaction without owners');\n    }\n    if (this._sourceKeyPair) {\n      throw new SigningError('Cannot sign multiple times a non send-type transaction');\n    }\n    // Signing the transaction is an async operation, so save the source and leave the actual\n    // signing for the build step\n    this._sourceKeyPair = signer;\n    return this.transaction;\n  }\n\n  /** @inheritdoc */\n  validateAddress(address: BaseAddress): void {\n    if (!isValidEthAddress(address.address)) {\n      throw new BuildTransactionError('Invalid address ' + address.address);\n    }\n  }\n\n  /** @inheritdoc */\n  validateKey(key: BaseKey): void {\n    if (!(isValidXprv(key.key) || isValidPrv(key.key))) {\n      throw new BuildTransactionError('Invalid key');\n    }\n  }\n\n  /**\n   * Validate the raw transaction is either a JSON or\n   * a hex encoded transaction\n   *\n   * @param {any} rawTransaction The raw transaction to be validated\n   */\n  validateRawTransaction(rawTransaction: any): void {\n    if (!rawTransaction) {\n      throw new InvalidTransactionError('Raw transaction is empty');\n    }\n    if (typeof rawTransaction === 'string') {\n      if (/^0x?[0-9a-f]{1,}$/.test(rawTransaction.toLowerCase())) {\n        const txBytes = ethUtil.toBuffer(ethUtil.addHexPrefix(rawTransaction.toLowerCase()));\n        if (!this.isEip1559Txn(txBytes) && !this.isRLPDecodable(txBytes)) {\n          throw new ParseTransactionError('There was error in decoding the hex string');\n        }\n      } else {\n        try {\n          JSON.parse(rawTransaction);\n        } catch (e) {\n          throw new ParseTransactionError('There was error in parsing the JSON string');\n        }\n      }\n    } else {\n      throw new InvalidTransactionError('Transaction is not a hex string or stringified json');\n    }\n  }\n\n  private isEip1559Txn(txn: Buffer): boolean {\n    try {\n      FeeMarketEIP1559Transaction.fromSerializedTx(txn);\n      return true;\n    } catch (_) {\n      return false;\n    }\n  }\n\n  private isRLPDecodable(bytes: Buffer): boolean {\n    try {\n      ethUtil.rlp.decode(bytes);\n      return true;\n    } catch (_) {\n      return false;\n    }\n  }\n\n  protected validateBaseTransactionFields(): void {\n    if (this._fee === undefined || (!this._fee.fee && !this._fee.gasPrice && !this._fee.eip1559)) {\n      throw new BuildTransactionError('Invalid transaction: missing fee');\n    }\n    if (this._common === undefined) {\n      throw new BuildTransactionError('Invalid transaction: network common');\n    }\n    if (this._counter === undefined) {\n      throw new BuildTransactionError('Invalid transaction: missing address counter');\n    }\n  }\n\n  /** @inheritdoc */\n  validateTransaction(transaction: BaseTransaction): void {\n    this.validateBaseTransactionFields();\n    switch (this._type) {\n      case TransactionType.WalletInitialization:\n        this.validateWalletInitializationFields();\n        break;\n      case TransactionType.RecoveryWalletDeployment:\n        this.validateDataField();\n        break;\n      case TransactionType.Send:\n      case TransactionType.SendERC721:\n      case TransactionType.SendERC1155:\n        this.validateContractAddress();\n        break;\n      case TransactionType.AddressInitialization:\n        this.validateContractAddress();\n        break;\n      case TransactionType.FlushCoins:\n        this.validateContractAddress();\n        break;\n      case TransactionType.FlushTokens:\n        this.validateContractAddress();\n        this.validateForwarderAddress();\n        this.validateTokenAddress();\n        break;\n      case TransactionType.SingleSigSend:\n        // for single sig sends, the contract address is actually the recipient\n        this.validateContractAddress();\n        break;\n      case TransactionType.StakingLock:\n      case TransactionType.StakingUnlock:\n      case TransactionType.StakingVote:\n      case TransactionType.StakingUnvote:\n      case TransactionType.StakingActivate:\n      case TransactionType.StakingWithdraw:\n        break;\n      case TransactionType.ContractCall:\n        this.validateContractAddress();\n        this.validateDataField();\n        break;\n      default:\n        throw new BuildTransactionError('Unsupported transaction type');\n    }\n  }\n\n  /**\n   * Check wallet owner addresses for wallet initialization transactions are valid or throw.\n   */\n  private validateWalletInitializationFields(): void {\n    if (this._walletOwnerAddresses === undefined) {\n      throw new BuildTransactionError('Invalid transaction: missing wallet owners');\n    }\n\n    if (this._walletOwnerAddresses.length !== 3) {\n      throw new BuildTransactionError(\n        `Invalid transaction: wrong number of owners -- required: 3, found: ${this._walletOwnerAddresses.length}`\n      );\n    }\n  }\n\n  /**\n   * Check if a token address for the tx was defined or throw.\n   */\n  private validateTokenAddress(): void {\n    if (this._tokenAddress === undefined) {\n      throw new BuildTransactionError('Invalid transaction: missing token address');\n    }\n  }\n\n  /**\n   * Check if a forwarder address for the tx was defined or throw.\n   */\n  private validateForwarderAddress(): void {\n    if (this._forwarderAddress === undefined) {\n      throw new BuildTransactionError('Invalid transaction: missing forwarder address');\n    }\n  }\n\n  /**\n   * Check if a contract address for the wallet was defined or throw.\n   */\n  private validateContractAddress(): void {\n    if (this._contractAddress === undefined) {\n      throw new BuildTransactionError('Invalid transaction: missing contract address');\n    }\n  }\n\n  /**\n   * Checks if a contract call data field was defined or throws otherwise\n   */\n  private validateDataField(): void {\n    if (!this._data) {\n      throw new BuildTransactionError('Invalid transaction: missing contract call data field');\n    }\n  }\n\n  private setContract(address: string | undefined): void {\n    if (address === undefined) {\n      throw new BuildTransactionError('Undefined recipient address');\n    }\n    this.contract(address);\n  }\n\n  validateValue(value: BigNumber): void {\n    if (value.isLessThan(0)) {\n      throw new BuildTransactionError('Value cannot be below less than zero');\n    }\n    // TODO: validate the amount is not bigger than the max amount in each Eth family coin\n  }\n\n  // region Common builder methods\n\n  /**\n   * The type of transaction being built.\n   *\n   * @param {TransactionType} type\n   */\n  type(type: TransactionType): void {\n    this._type = type;\n  }\n\n  /**\n   * Set the transaction fees. Low fees may get a transaction rejected or never picked up by bakers.\n   *\n   * @param {Fee} fee Baker fees. May also include the maximum gas to pay\n   */\n  fee(fee: Fee): void {\n    this.validateValue(new BigNumber(fee.fee));\n    if (fee.gasLimit) {\n      this.validateValue(new BigNumber(fee.gasLimit));\n    }\n    if (fee.eip1559) {\n      this.validateValue(new BigNumber(fee.eip1559.maxFeePerGas));\n      this.validateValue(new BigNumber(fee.eip1559.maxPriorityFeePerGas));\n    }\n    if (fee.gasPrice) {\n      this.validateValue(new BigNumber(fee.gasPrice));\n    }\n    this._fee = fee;\n  }\n\n  /**\n   * Set the transaction counter to prevent submitting repeated transactions.\n   *\n   * @param {number} counter The counter to use\n   */\n  counter(counter: number): void {\n    if (counter < 0) {\n      throw new BuildTransactionError(`Invalid counter: ${counter}`);\n    }\n\n    this._counter = counter;\n  }\n\n  /**\n   * The value to send along with this transaction. 0 by default\n   *\n   * @param {string} value The value to send along with this transaction\n   */\n  value(value: string): void {\n    this._value = value;\n  }\n\n  // set args that are required for all types of eth transactions\n  protected buildBase(data: string): TxData {\n    const baseParams = {\n      gasLimit: this._fee.gasLimit,\n      nonce: this._counter,\n      data: data,\n      chainId: this._common.chainIdBN().toString(),\n      value: this._value,\n      to: this._contractAddress,\n    };\n\n    if (this._fee.eip1559) {\n      return {\n        ...baseParams,\n        _type: ETHTransactionType.EIP1559,\n        maxFeePerGas: this._fee.eip1559.maxFeePerGas,\n        maxPriorityFeePerGas: this._fee.eip1559.maxPriorityFeePerGas,\n      };\n    } else {\n      return {\n        ...baseParams,\n        _type: ETHTransactionType.LEGACY,\n        gasPrice: this._fee?.gasPrice ?? this._fee.fee,\n        v: this.getFinalV(),\n      };\n    }\n  }\n\n  // endregion\n\n  // region WalletInitialization builder methods\n  /**\n   * Set one of the owners of the multisig wallet.\n   *\n   * @param {string} address An Ethereum address\n   */\n  owner(address: string): void {\n    if (this._type !== TransactionType.WalletInitialization) {\n      throw new BuildTransactionError('Multisig wallet owner can only be set for initialization transactions');\n    }\n    if (this._walletOwnerAddresses.length >= DEFAULT_M) {\n      throw new BuildTransactionError('A maximum of ' + DEFAULT_M + ' owners can be set for a multisig wallet');\n    }\n    if (!isValidEthAddress(address)) {\n      throw new BuildTransactionError('Invalid address: ' + address);\n    }\n    if (this._walletOwnerAddresses.includes(address)) {\n      throw new BuildTransactionError('Repeated owner address: ' + address);\n    }\n    this._walletOwnerAddresses.push(address);\n  }\n\n  /**\n   * Build a transaction for a generic multisig contract.\n   *\n   * @returns {TxData} The Ethereum transaction data\n   */\n  protected buildWalletInitializationTransaction(walletVersion?: number): TxData {\n    const walletInitData =\n      walletVersion === defaultWalletVersion\n        ? this.getContractData(this._walletOwnerAddresses)\n        : getV1WalletInitializationData(this._walletOwnerAddresses, this._salt);\n    return this.buildBase(walletInitData);\n  }\n\n  /**\n   * Returns the smart contract encoded data\n   *\n   * @param {string[]} addresses - the contract signers\n   * @returns {string} - the smart contract encoded data\n   */\n  protected getContractData(addresses: string[]): string {\n    const params = [addresses];\n    const resultEncodedParameters = EthereumAbi.rawEncode(walletSimpleConstructor, params)\n      .toString('hex')\n      .replace('0x', '');\n    return this._walletSimpleByteCode + resultEncodedParameters;\n  }\n\n  // endregion\n\n  // region Send builder methods\n\n  contract(address: string): void {\n    if (!isValidEthAddress(address)) {\n      throw new BuildTransactionError('Invalid address: ' + address);\n    }\n    this._contractAddress = address;\n  }\n\n  /**\n   * Gets the transfer funds builder if exist, or creates a new one for this transaction and returns it\n   *\n   * @param {string} data transfer data to initialize the transfer builder with, empty if none given\n   * @param {boolean} isFirstSigner whether the transaction is being signed by the first signer\n   * @returns {TransferBuilder | ERC721TransferBuilder | ERC1155TransferBuilder} the transfer builder\n   */\n  abstract transfer(\n    data?: string,\n    isFirstSigner?: boolean\n  ): TransferBuilder | ERC721TransferBuilder | ERC1155TransferBuilder;\n\n  /**\n   * Returns the serialized sendMultiSig contract method data\n   *\n   * @returns {string} serialized sendMultiSig data\n   */\n  public getSendData(): string {\n    if (!this._transfer) {\n      throw new BuildTransactionError('Missing transfer information');\n    }\n    const chainId = this._common.chainIdBN().toString();\n    this._transfer.walletVersion(this._walletVersion);\n    // This change is made to support new contracts with different encoding type\n    return this._transfer.signAndBuild(chainId, this.coinUsesNonPackedEncodingForTxData());\n  }\n\n  /**\n   * Decide if the coin uses non-packed encoding for tx data\n   *\n   * @returns {boolean} true if the coin uses non-packed encoding for tx data\n   */\n  public coinUsesNonPackedEncodingForTxData(): boolean {\n    return (\n      this._walletVersion === 4 || this._coinConfig.features.includes(CoinFeature.USES_NON_PACKED_ENCODING_FOR_TXDATA)\n    );\n  }\n\n  private buildSendTransaction(): TxData {\n    const sendData = this.getSendData();\n    const tx: TxData = this.buildBase(sendData);\n    tx.to = this._contractAddress;\n    return tx;\n  }\n\n  // endregion\n\n  // region AddressInitialization builder methods\n\n  /**\n   * Set the contract transaction nonce to calculate the forwarder address.\n   *\n   * @param {number} contractCounter The counter to use\n   */\n  contractCounter(contractCounter: number): void {\n    if (contractCounter < 0) {\n      throw new BuildTransactionError(`Invalid contract counter: ${contractCounter}`);\n    }\n\n    this._contractCounter = contractCounter;\n  }\n\n  /**\n   * Build a transaction to create a forwarder.\n   *\n   * @returns {TxData} The Ethereum transaction data\n   */\n  private buildAddressInitializationTransaction(): TxData {\n    const addressInitData = getAddressInitDataAllForwarderVersions(\n      this._forwarderVersion,\n      this._baseAddress,\n      this._salt,\n      this._feeAddress\n    );\n    const tx: TxData = this.buildBase(addressInitData);\n    tx.to = this._contractAddress;\n\n    if (this._contractCounter) {\n      tx.deployedAddress = calculateForwarderAddress(this._contractAddress, this._contractCounter);\n    }\n\n    if (this._salt && this._initCode) {\n      const saltBuffer = ethUtil.setLengthLeft(ethUtil.toBuffer(this._salt), 32);\n\n      const { createForwarderParams, createForwarderTypes } = getCreateForwarderParamsAndTypes(\n        this._baseAddress,\n        saltBuffer,\n        this._feeAddress\n      );\n\n      // Hash the wallet base address and fee address if present with the given salt, so the address directly relies on the base address and fee address\n      const calculationSalt = ethUtil.bufferToHex(\n        EthereumAbi.soliditySHA3(createForwarderTypes, createForwarderParams)\n      );\n      tx.deployedAddress = calculateForwarderV1Address(this._contractAddress, calculationSalt, this._initCode);\n    }\n    return tx;\n  }\n  // endregion\n\n  // region flush methods\n  /**\n   * Set the forwarder address to flush\n   *\n   * @param {string} address The address to flush\n   */\n  forwarderAddress(address: string): void {\n    if (!isValidEthAddress(address)) {\n      throw new BuildTransactionError('Invalid address: ' + address);\n    }\n    this._forwarderAddress = address;\n  }\n\n  /**\n   * Set the address of the ERC20 token contract that we are flushing tokens for\n   *\n   * @param {string} address the contract address of the token to flush\n   */\n  tokenAddress(address: string): void {\n    if (!isValidEthAddress(address)) {\n      throw new BuildTransactionError('Invalid address: ' + address);\n    }\n    this._tokenAddress = address;\n  }\n\n  /**\n   * Build a transaction to flush tokens from a forwarder.\n   *\n   * @returns {TxData} The Ethereum transaction data\n   */\n  private buildFlushTokensTransaction(): TxData {\n    if (this._forwarderVersion >= 4 && this._contractAddress !== this._forwarderAddress) {\n      throw new BuildTransactionError('Invalid contract address: ' + this._contractAddress);\n    }\n    return this.buildBase(flushTokensData(this._forwarderAddress, this._tokenAddress, this._forwarderVersion));\n  }\n\n  /**\n   * Build a transaction to flush tokens from a forwarder.\n   *\n   * @returns {TxData} The Ethereum transaction data\n   */\n  private buildFlushCoinsTransaction(): TxData {\n    return this.buildBase(flushCoinsData());\n  }\n  // endregion\n\n  // region generic contract call\n  data(encodedCall: string): void {\n    const supportedTransactionTypes = [TransactionType.ContractCall, TransactionType.RecoveryWalletDeployment];\n    if (!supportedTransactionTypes.includes(this._type)) {\n      throw new BuildTransactionError('data can only be set for contract call transaction types');\n    }\n    this._data = encodedCall;\n  }\n\n  private buildGenericContractCallTransaction(): TxData {\n    return this.buildBase(this._data);\n  }\n  // endregion\n\n  /** @inheritdoc */\n  protected get transaction(): Transaction {\n    return this._transaction;\n  }\n\n  /** @inheritdoc */\n  protected set transaction(transaction: Transaction) {\n    this._transaction = transaction;\n  }\n\n  /**\n   * Get the final v value. Final v is described in EIP-155.\n   *\n   * @protected for internal use when the enableFinalVField flag is true.\n   */\n  protected getFinalV(): string {\n    return ethUtil.addHexPrefix(this._common.chainIdBN().muln(2).addn(35).toString(16));\n  }\n\n  /**\n   * Set the forwarder version for address to be initialized\n   *\n   * @param {number} version forwarder version\n   */\n  forwarderVersion(version: number): void {\n    if (version < 0 || version > 4 || version === 3) {\n      throw new BuildTransactionError(`Invalid forwarder version: ${version}`);\n    }\n\n    this._forwarderVersion = version;\n  }\n\n  /**\n   * Set the salt to create the address using create2\n   *\n   * @param {string} salt The salt to create the address using create2, hex string\n   */\n  salt(salt: string): void {\n    this._salt = salt;\n  }\n\n  /**\n   * Take the implementation address for the proxy contract, and get the binary initcode for the associated proxy\n   *\n   * @param {string} implementationAddress The address of the implementation contract\n   */\n  initCode(implementationAddress: string): void {\n    if (!isValidEthAddress(implementationAddress)) {\n      throw new BuildTransactionError('Invalid address: ' + implementationAddress);\n    }\n    this._initCode = getProxyInitcode(implementationAddress);\n  }\n\n  /**\n   * Set the wallet version for wallet to be initialized\n   *\n   * @param {number} version wallet version\n   */\n  walletVersion(version: number): void {\n    if (version < 0 || version > 4 || version === 3) {\n      throw new BuildTransactionError(`Invalid wallet version: ${version}`);\n    }\n\n    this._walletVersion = version;\n  }\n\n  /**\n   * Set the base address of the wallet\n   *\n   * @param {string} address The wallet contract address\n   */\n  baseAddress(address: string): void {\n    if (!isValidEthAddress(address)) {\n      throw new BuildTransactionError('Invalid address: ' + address);\n    }\n    this._baseAddress = address;\n  }\n\n  /**\n   * Set the fee address of the wallet\n   *\n   * @param {string} address The fee address of the wallet\n   */\n  feeAddress(address: string): void {\n    if (!isValidEthAddress(address)) {\n      throw new BuildTransactionError('Invalid address: ' + address);\n    }\n    this._feeAddress = address;\n  }\n\n  /**\n   * Get the wallet version for wallet\n   */\n  public getWalletVersion(): number {\n    return this._walletVersion;\n  }\n}\n"]}

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