@bitgo-beta/bitgo/dist/browser/BitGoJS.min.js

BitGo JavaScript SDK

/*! For license information please see BitGoJS.min.js.LICENSE.txt */
!function webpackUniversalModuleDefinition(root,factory){"object"==typeof exports&&"object"==typeof module?module.exports=factory(require("superagent-proxy")):"function"==typeof define&&define.amd?define(["superagent-proxy"],factory):"object"==typeof exports?exports.BitGoJS=factory(require("superagent-proxy")):root.BitGoJS=factory(root["superagent-proxy"])}(self,(function(__WEBPACK_EXTERNAL_MODULE__68145__){return(()=>{var __webpack_modules__={29412:(__unused_webpack_module,exports,__webpack_require__)=>{"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.AbstractEthLikeCoin=void 0;const sdk_coin_eth_1=__webpack_require__(55059),utxo_lib_1=__webpack_require__(76736),crypto_1=__webpack_require__(5634),sdk_core_1=__webpack_require__(62330),bignumber_js_1=__webpack_require__(58059);class AbstractEthLikeCoin extends sdk_core_1.BaseCoin{constructor(bitgo,staticsCoin){if(super(bitgo),!staticsCoin)throw new Error("missing required constructor parameter staticsCoin");this._staticsCoin=staticsCoin}getChain(){return this._staticsCoin.name}getBaseChain(){return this.getChain()}getFamily(){return this._staticsCoin.family}getFullName(){return this._staticsCoin.fullName}getBaseFactor(){return Math.pow(10,this._staticsCoin.decimalPlaces)}valuelessTransferAllowed(){return!0}isValidAddress(address){return!!address&&sdk_coin_eth_1.isValidEthAddress(address)}generateKeyPair(seed){const extendedKey=utxo_lib_1.bip32.fromSeed(seed||crypto_1.randomBytes(32));return{pub:extendedKey.neutered().toBase58(),prv:extendedKey.toBase58()}}async parseTransaction(params){return{}}isWalletAddress(){throw new sdk_core_1.MethodNotImplementedError}async verifyTransaction(params){return!0}async signTransaction(params){const txBuilder=this.getTransactionBuilder();txBuilder.from(params.txPrebuild.txHex),txBuilder.transfer().key(new sdk_coin_eth_1.KeyPair({prv:params.prv}).getKeys().prv);const transaction=await txBuilder.build(),recipients=transaction.outputs.map((output=>({address:output.address,amount:output.value})));return{halfSigned:{txHex:transaction.toBroadcastFormat(),recipients,expiration:params.txPrebuild.expireTime}}}isValidPub(pub){let valid=!0;try{new sdk_coin_eth_1.KeyPair({pub})}catch(e){valid=!1}return valid}async recover(params){throw new sdk_core_1.MethodNotImplementedError}async explainTransaction(params){const txHex=params.txHex||params.halfSigned&&params.halfSigned.txHex;if(!txHex||!params.feeInfo)throw new Error("missing explain tx parameters");const txBuilder=this.getTransactionBuilder();txBuilder.from(txHex);const tx=await txBuilder.build(),outputs=tx.outputs.map((output=>({address:output.address,amount:output.value})));return{displayOrder:["id","outputAmount","changeAmount","outputs","changeOutputs","fee"],id:tx.id,outputs,outputAmount:outputs.reduce(((accumulator,output)=>accumulator.plus(output.amount)),new bignumber_js_1.default("0")).toFixed(0),changeOutputs:[],changeAmount:"0",fee:params.feeInfo}}}exports.AbstractEthLikeCoin=AbstractEthLikeCoin},46407:(__unused_webpack_module,exports,__webpack_require__)=>{"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.EthLikeToken=void 0;const statics_1=__webpack_require__(64469),abstractEthLikeCoin_1=__webpack_require__(29412),sdk_coin_eth_1=__webpack_require__(55059);class EthLikeToken extends abstractEthLikeCoin_1.AbstractEthLikeCoin{constructor(bitgo,tokenConfig,coinNames){super(bitgo,statics_1.coins.get(coinNames[tokenConfig.network])),this.tokenConfig=tokenConfig}static createTokenConstructor(config,coinNames){return bitgo=>new this(bitgo,config,coinNames)}static createTokenConstructors(coinNames){const tokensCtors=[],chain=coinNames.Mainnet;for(const token of[...statics_1.tokens.bitcoin[chain].tokens,...statics_1.tokens.testnet[chain].tokens]){const tokenConstructor=this.createTokenConstructor(token,coinNames);tokensCtors.push({name:token.type,coinConstructor:tokenConstructor}),tokensCtors.push({name:token.tokenContractAddress,coinConstructor:tokenConstructor})}return tokensCtors}getTransactionBuilder(){return new sdk_coin_eth_1.TransactionBuilder(statics_1.coins.get(this.getBaseChain()))}get type(){return this.tokenConfig.type}get name(){return this.tokenConfig.name}get coin(){return this.tokenConfig.coin}get network(){return this.tokenConfig.network}get tokenContractAddress(){return this.tokenConfig.tokenContractAddress}get decimalPlaces(){return this.tokenConfig.decimalPlaces}getChain(){return this.tokenConfig.type}getBaseChain(){return this.coin}getFullName(){return"Eth Like Token"}getBaseFactor(){return Math.pow(10,this.tokenConfig.decimalPlaces)}valuelessTransferAllowed(){return!1}transactionDataAllowed(){return!1}isToken(){return!0}verifyCoin(txPrebuild){return txPrebuild.coin===this.tokenConfig.coin&&txPrebuild.token===this.tokenConfig.type}}exports.EthLikeToken=EthLikeToken},42702:function(__unused_webpack_module,exports,__webpack_require__){"use strict";var __createBinding=this&&this.__createBinding||(Object.create?function(o,m,k,k2){void 0===k2&&(k2=k),Object.defineProperty(o,k2,{enumerable:!0,get:function(){return m[k]}})}:function(o,m,k,k2){void 0===k2&&(k2=k),o[k2]=m[k]}),__exportStar=this&&this.__exportStar||function(m,exports){for(var p in m)"default"===p||Object.prototype.hasOwnProperty.call(exports,p)||__createBinding(exports,m,p)};Object.defineProperty(exports,"__esModule",{value:!0}),__exportStar(__webpack_require__(29412),exports),__exportStar(__webpack_require__(46407),exports)},58059:function(module,exports,__webpack_require__){var __WEBPACK_AMD_DEFINE_RESULT__;!function(globalObject){"use strict";var BigNumber,isNumeric=/^-?(?:\d+(?:\.\d*)?|\.\d+)(?:e[+-]?\d+)?$/i,hasSymbol="function"==typeof Symbol&&"symbol"==typeof 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utxolib=__webpack_require__(76736),utxo_lib_1=__webpack_require__(76736),bitcoinMessage=__webpack_require__(77334),crypto_1=__webpack_require__(5634),debugLib=__webpack_require__(45457),_=__webpack_require__(76635),bignumber_js_1=__webpack_require__(6391),backupKeyRecovery_1=__webpack_require__(37354),recovery_1=__webpack_require__(45602),sdk_core_1=__webpack_require__(62330),parseOutput_1=__webpack_require__(97304),debug=debugLib("bitgo:v2:utxo"),replayProtection_1=__webpack_require__(98980),sign_1=__webpack_require__(56217),config_1=__webpack_require__(92997),{getExternalChainCode,isChainCode,scriptTypeForChain,outputScripts,toOutput,verifySignatureWithUnspent}=utxo_lib_1.bitgo;class AbstractUtxoCoin extends sdk_core_1.BaseCoin{constructor(bitgo,network,amountType="number"){if(super(bitgo),!utxolib.isValidNetwork(network))throw new Error("invalid network: please make sure to use the same version of @bitgo-beta/utxo-lib as this library when initializing an instance of this class");this.amountType=amountType,this._network=network}get network(){return this._network}sweepWithSendMany(){return!0}static get validAddressTypes(){return[...outputScripts.scriptTypes2Of3]}getBaseFactor(){return 1e8}getCoinLibrary(){return utxolib}getAddressVersion(address){try{const{version}=utxolib.address.fromBase58Check(address,this.network);return version}catch(e){}if(this.supportsAddressType("p2wsh")||this.supportsAddressType("p2tr"))try{const{version,prefix}=utxolib.address.fromBech32(address);if(_.isString(this.network.bech32)&&prefix===this.network.bech32)return version}catch(e){}}getAddressPrefix(address){try{const{prefix}=utxolib.address.fromBech32(address);return prefix}catch(e){}}isValidAddress(address,forceAltScriptSupport=!1){const validVersions=[this.network.pubKeyHash,this.network.scriptHash];this.altScriptHash&&(forceAltScriptSupport||this.supportAltScriptDestination)&&validVersions.push(this.altScriptHash);const addressVersion=this.getAddressVersion(address),addressVersionValid=_.isNumber(addressVersion)&&validVersions.includes(addressVersion),addressPrefix=this.getAddressPrefix(address);return!this.supportsAddressType("p2wsh")||_.isUndefined(addressPrefix)?addressVersionValid:_.isString(this.network.bech32)&&this.network.bech32===addressPrefix&&address===address.toLowerCase()}isValidPub(pub){try{return utxo_lib_1.bip32.fromBase58(pub).isNeutered()}catch(e){return!1}}async getLatestBlockHeight(reqId){reqId&&this.bitgo.setRequestTracer(reqId);return(await this.bitgo.get(this.url("/public/block/latest")).result()).height}async postProcessPrebuild(prebuild){if(_.isUndefined(prebuild.txHex))throw new Error("missing required txPrebuild property txHex");const transaction=this.createTransactionFromHex(prebuild.txHex);return _.isUndefined(prebuild.blockHeight)&&(prebuild.blockHeight=await this.getLatestBlockHeight()),transaction.locktime=prebuild.blockHeight,_.extend({},prebuild,{txHex:transaction.toHex()})}static findMissingOutputs(expectedOutputs,actualOutputs){const keyFunc=({address,amount})=>`${address}:${Number(amount)}`,groupedOutputs=_.groupBy(expectedOutputs,keyFunc);return actualOutputs.forEach((output=>{const group=groupedOutputs[keyFunc(output)];group&&group.pop()})),_.flatten(_.values(groupedOutputs))}static inferAddressType(addressDetails){return isChainCode(addressDetails.chain)?scriptTypeForChain(addressDetails.chain):null}createTransactionFromHex(hex){return utxolib.bitgo.createTransactionFromHex(hex,this.network,this.amountType)}async parseTransaction(params){const{txParams,txPrebuild,wallet,verification={},reqId}=params;if(!_.isUndefined(verification.disableNetworking)&&!_.isBoolean(verification.disableNetworking))throw new Error("verification.disableNetworking must be a boolean");const disableNetworking=verification.disableNetworking,fetchKeychains=async wallet=>sdk_core_1.promiseProps({user:this.keychains().get({id:wallet.keyIds()[sdk_core_1.KeyIndices.USER],reqId}),backup:this.keychains().get({id:wallet.keyIds()[sdk_core_1.KeyIndices.BACKUP],reqId}),bitgo:this.keychains().get({id:wallet.keyIds()[sdk_core_1.KeyIndices.BITGO],reqId})});let keychains=verification.keychains;if(!keychains){if(disableNetworking)throw new Error("cannot fetch keychains without networking");keychains=await fetchKeychains(wallet)}if(!(keychains&&keychains.user&&keychains.backup&&keychains.bitgo))throw new Error("keychains are required, but could not be fetched");const keychainArray=[keychains.user,keychains.backup,keychains.bitgo],keySignatures=_.get(wallet,"_wallet.keySignatures");if(_.isUndefined(txPrebuild.txHex))throw new Error("missing required txPrebuild property txHex");const explanation=await this.explainTransaction({txHex:txPrebuild.txHex,txInfo:txPrebuild.txInfo,pubs:keychainArray.map((k=>k.pub))}),allOutputs=[...explanation.outputs,...explanation.changeOutputs],expectedOutputs=_.get(txParams,"recipients",[]).map((output=>({...output,address:this.canonicalAddress(output.address)}))),missingOutputs=AbstractUtxoCoin.findMissingOutputs(expectedOutputs,allOutputs);let customChange;const{customChangeWalletId}=wallet.coinSpecific()||{};if(customChangeWalletId){const customChangeKeySignatures=_.get(wallet,"_wallet.customChangeKeySignatures",{}),customChangeWallet=await this.wallets().get({id:customChangeWalletId}),customChangeKeys=await fetchKeychains(customChangeWallet);if(!customChangeKeys)throw new Error("failed to fetch keychains for custom change wallet");if(customChangeKeys.user&&customChangeKeys.backup&&customChangeKeys.bitgo&&customChangeWallet){const customChangeKeychains=[customChangeKeys.user,customChangeKeys.backup,customChangeKeys.bitgo];customChange={keys:customChangeKeychains,signatures:[customChangeKeySignatures.user,customChangeKeySignatures.backup,customChangeKeySignatures.bitgo]}}}const allOutputDetails=await Promise.all(allOutputs.map((currentOutput=>parseOutput_1.parseOutput({currentOutput,coin:this,txPrebuild,verification,keychainArray,wallet,txParams,customChange,reqId})))),needsCustomChangeKeySignatureVerification=allOutputDetails.some((output=>output.needsCustomChangeKeySignatureVerification)),changeOutputs=_.filter(allOutputDetails,{external:!1}),implicitOutputs=AbstractUtxoCoin.findMissingOutputs(allOutputDetails,expectedOutputs),explicitOutputs=AbstractUtxoCoin.findMissingOutputs(allOutputDetails,implicitOutputs),explicitExternalOutputs=_.filter(explicitOutputs,{external:!0}),explicitExternalSpendAmount=utxolib.bitgo.toTNumber(explicitExternalOutputs.reduce(((sum,o)=>sum+BigInt(o.amount)),BigInt(0)),this.amountType),implicitExternalOutputs=_.filter(implicitOutputs,{external:!0}),implicitExternalSpendAmount=utxolib.bitgo.toTNumber(implicitExternalOutputs.reduce(((sum,o)=>sum+BigInt(o.amount)),BigInt(0)),this.amountType);return{keychains,keySignatures,outputs:allOutputDetails,missingOutputs,explicitExternalOutputs,implicitExternalOutputs,changeOutputs,explicitExternalSpendAmount,implicitExternalSpendAmount,needsCustomChangeKeySignatureVerification,customChange}}verifyUserPublicKey(params){const{userKeychain,txParams,disableNetworking}=params;if(!userKeychain)throw new Error("user keychain is required");const userPub=userKeychain.pub;let userPrv=userKeychain.prv;if(_.isEmpty(userPrv)){const encryptedPrv=userKeychain.encryptedPrv;encryptedPrv&&!_.isEmpty(encryptedPrv)&&(userPrv=this.bitgo.decrypt({input:encryptedPrv,password:txParams.walletPassphrase}))}if(!userPrv){const errorMessage="user private key unavailable for verification";if(disableNetworking)return console.log(errorMessage),!1;throw new Error(errorMessage)}{const userPrivateKey=utxo_lib_1.bip32.fromBase58(userPrv);if(userPrivateKey.toBase58()===userPrivateKey.neutered().toBase58())throw new Error("user private key is only public");if(userPrivateKey.neutered().toBase58()!==userPub)throw new Error("user private key does not match public key")}return!0}verifyKeySignature(params){const{userKeychain,keychainToVerify,keySignature}=params;if(!userKeychain)throw new Error("user keychain is required");if(!keychainToVerify)throw new Error("keychain to verify is required");if(!keySignature)throw new Error("key signature is required");const publicKey=utxo_lib_1.bip32.fromBase58(userKeychain.pub).publicKey,signingAddress=utxolib.address.toBase58Check(utxolib.crypto.hash160(publicKey),utxolib.networks.bitcoin.pubKeyHash,this.network);try{return bitcoinMessage.verify(keychainToVerify.pub,signingAddress,Buffer.from(keySignature,"hex"))}catch(e){return debug("error thrown from bitcoinmessage while verifying key signature",e),!1}}verifyCustomChangeKeySignatures(tx,userKeychain){if(!tx.customChange)throw new Error("parsed transaction is missing required custom change verification data");if(!Array.isArray(tx.customChange.keys)||!Array.isArray(tx.customChange.signatures))throw new Error("customChange property is missing keys or signatures");for(const keyIndex of[sdk_core_1.KeyIndices.USER,sdk_core_1.KeyIndices.BACKUP,sdk_core_1.KeyIndices.BITGO]){const keychainToVerify=tx.customChange.keys[keyIndex],keySignature=tx.customChange.signatures[keyIndex];if(!keychainToVerify)throw new Error(`missing required custom change ${sdk_core_1.KeyIndices[keyIndex].toLowerCase()} keychain public key`);if(!keySignature)throw new Error(`missing required custom change ${sdk_core_1.KeyIndices[keyIndex].toLowerCase()} keychain signature`);if(!this.verifyKeySignature({userKeychain,keychainToVerify,keySignature}))return debug("failed to verify custom change %s key signature!",sdk_core_1.KeyIndices[keyIndex].toLowerCase()),!1}return!0}getPayGoLimit(allowPaygoOutput){return _.isNil(allowPaygoOutput)||allowPaygoOutput?.015:0}async verifyTransaction(params){const{txParams,txPrebuild,wallet,verification={allowPaygoOutput:!0},reqId}=params,disableNetworking=!!verification.disableNetworking,parsedTransaction=await this.parseTransaction({txParams,txPrebuild,wallet,verification,reqId}),keychains=parsedTransaction.keychains;let userPublicKeyVerified=!1;try{userPublicKeyVerified=this.verifyUserPublicKey({userKeychain:keychains.user,disableNetworking,txParams})}catch(e){debug("failed to verify user public key!",e)}const keySignatures=parsedTransaction.keySignatures;if(_.isEmpty(keySignatures))disableNetworking||console.log("unsigned keys obtained online are being used for address verification");else{const verify=(key,pub)=>this.verifyKeySignature({userKeychain:keychains.user,keychainToVerify:key,keySignature:pub}),isBackupKeySignatureValid=verify(keychains.backup,keySignatures.backupPub),isBitgoKeySignatureValid=verify(keychains.bitgo,keySignatures.bitgoPub);if(!isBackupKeySignatureValid||!isBitgoKeySignatureValid)throw new Error("secondary public key signatures invalid");debug("successfully verified backup and bitgo key signatures")}if(parsedTransaction.needsCustomChangeKeySignatureVerification){if(!keychains.user||!userPublicKeyVerified)throw new Error("transaction requires verification of user public key, but it was unable to be verified");if(!this.verifyCustomChangeKeySignatures(parsedTransaction,keychains.user))throw new Error("transaction requires verification of custom change key signatures, but they were unable to be verified");debug("successfully verified user public key and custom change key signatures")}if(0!==parsedTransaction.missingOutputs.length)throw new Error("expected outputs missing in transaction prebuild");const intendedExternalSpend=parsedTransaction.explicitExternalSpendAmount,payAsYouGoLimit=new bignumber_js_1.default(this.getPayGoLimit(verification.allowPaygoOutput)).multipliedBy(intendedExternalSpend.toString()),nonChangeAmount=new bignumber_js_1.default(parsedTransaction.implicitExternalSpendAmount.toString());if(debug("Intended spend is %s, Non-change amount is %s, paygo limit is %s",intendedExternalSpend.toString(),nonChangeAmount.toString(),payAsYouGoLimit.toString()),nonChangeAmount.gt(payAsYouGoLimit))throw new Error("prebuild attempts to spend to unintended external recipients");const allOutputs=parsedTransaction.outputs;if(!txPrebuild.txHex)throw new Error("txPrebuild.txHex not set");const transaction=this.createTransactionFromHex(txPrebuild.txHex),transactionCache={},inputAmount=(await Promise.all(transaction.ins.map((async currentInput=>{var _a,_b;const transactionId=Buffer.from(currentInput.hash).reverse().toString("hex"),txHex=null===(_b=null===(_a=txPrebuild.txInfo)||void 0===_a?void 0:_a.txHexes)||void 0===_b?void 0:_b[transactionId];if(txHex){const localTx=this.createTransactionFromHex(txHex);if(localTx.getId()!==transactionId)throw new Error("input transaction hex does not match id");const currentOutput=localTx.outs[currentInput.index];return{address:utxolib.address.fromOutputScript(currentOutput.script,this.network),value:currentOutput.value,valueString:currentOutput.value.toString()}}if(!transactionCache[transactionId]){if(disableNetworking)throw new Error("attempting to retrieve transaction details externally with networking disabled");reqId&&this.bitgo.setRequestTracer(reqId),transactionCache[transactionId]=await this.bitgo.get(this.url(`/public/tx/${transactionId}`)).result()}return transactionCache[transactionId].outputs[currentInput.index]})))).reduce(((sum,i)=>sum+BigInt("bigint"===this.amountType?i.valueString:i.value)),BigInt(0)),outputAmount=allOutputs.reduce(((sum,o)=>sum+BigInt(o.amount)),BigInt(0)),fee=inputAmount-outputAmount;if(fee<0)throw new Error(`attempting to spend ${outputAmount} satoshis, which exceeds the input amount (${inputAmount} satoshis) by ${-fee}`);return!0}isWalletAddress(params){const{address,addressType,keychains,coinSpecific,chain,index}=params;if(!this.isValidAddress(address))throw new sdk_core_1.InvalidAddressError(`invalid address: ${address}`);if(_.isUndefined(chain)&&_.isUndefined(index)||!_.isFinite(chain)||!_.isFinite(index))throw new sdk_core_1.InvalidAddressDerivationPropertyError(`address validation failure: invalid chain (${chain}) or index (${index})`);if(!_.isObject(coinSpecific))throw new sdk_core_1.InvalidAddressVerificationObjectPropertyError("address validation failure: coinSpecific field must be an object");if(!keychains)throw new Error("missing required param keychains");const expectedAddress=this.generateAddress({addressType,keychains,threshold:2,chain,index});if(expectedAddress.address!==address)throw new sdk_core_1.UnexpectedAddressError(`address validation failure: expected ${expectedAddress.address} but got ${address}`);return!0}supportsBlockTarget(){return!0}supportsAddressType(addressType){return utxolib.bitgo.outputScripts.isSupportedScriptType(this.network,addressType)}supportsAddressChain(chain){return isChainCode(chain)&&this.supportsAddressType(utxolib.bitgo.scriptTypeForChain(chain))}keyIdsForSigning(){return[sdk_core_1.KeyIndices.USER,sdk_core_1.KeyIndices.BACKUP,sdk_core_1.KeyIndices.BITGO]}generateAddress(params){const{keychains,threshold,chain,index,segwit=!1,bech32=!1}=params;let derivationChain=getExternalChainCode("p2sh");_.isNumber(chain)&&_.isInteger(chain)&&isChainCode(chain)&&(derivationChain=chain);const addressType=params.addressType||function convertFlagsToAddressType(){return isChainCode(chain)?utxolib.bitgo.scriptTypeForChain(chain):_.isBoolean(segwit)&&segwit?"p2shP2wsh":_.isBoolean(bech32)&&bech32?"p2wsh":"p2sh"}();if(addressType!==utxolib.bitgo.scriptTypeForChain(derivationChain))throw new sdk_core_1.AddressTypeChainMismatchError(addressType,derivationChain);if(!this.supportsAddressType(addressType))switch(addressType){case"p2sh":throw new Error("internal error: p2sh should always be supported");case"p2shP2wsh":throw new sdk_core_1.P2shP2wshUnsupportedError;case"p2wsh":throw new sdk_core_1.P2wshUnsupportedError;case"p2tr":throw new sdk_core_1.P2trUnsupportedError;default:throw new sdk_core_1.UnsupportedAddressTypeError}let signatureThreshold=2;if(_.isInteger(threshold)){if(signatureThreshold=threshold,signatureThreshold<=0)throw new Error("threshold has to be positive");if(signatureThreshold>keychains.length)throw new Error("threshold cannot exceed number of keys")}let derivationIndex=0;_.isInteger(index)&&index>0&&(derivationIndex=index);const path="0/0/"+derivationChain+"/"+derivationIndex,derivedKeys=keychains.map((({pub})=>utxo_lib_1.bip32.fromBase58(pub))).map((hdNode=>hdNode.derivePath(sdk_core_1.sanitizeLegacyPath(path)).publicKey)),{outputScript,redeemScript,witnessScript,address}=this.createMultiSigAddress(addressType,signatureThreshold,derivedKeys);return{address,chain:derivationChain,index:derivationIndex,coin:this.getChain(),coinSpecific:{outputScript:outputScript.toString("hex"),redeemScript:redeemScript&&redeemScript.toString("hex"),witnessScript:witnessScript&&witnessScript.toString("hex")},addressType}}async signTransaction(params){var _a;const txPrebuild=params.txPrebuild,userPrv=params.prv;if(_.isUndefined(txPrebuild)||!_.isObject(txPrebuild)){if(!_.isUndefined(txPrebuild)&&!_.isObject(txPrebuild))throw new Error("txPrebuild must be an object, got type "+typeof txPrebuild);throw new Error("missing txPrebuild parameter")}const transaction=this.createTransactionFromHex(txPrebuild.txHex);if(transaction.ins.length!==txPrebuild.txInfo.unspents.length)throw new Error("length of unspents array should equal to the number of transaction inputs");let isLastSignature=!1;if(_.isBoolean(params.isLastSignature)&&(isLastSignature=params.isLastSignature),_.isUndefined(userPrv)||!_.isString(userPrv)){if(!_.isUndefined(userPrv))throw new Error("prv must be a string, got type "+typeof userPrv);throw new Error("missing prv parameter to sign transaction")}if(!params.pubs||3!==params.pubs.length)throw new Error("must provide xpub array");const signerKeychain=utxo_lib_1.bip32.fromBase58(userPrv,utxolib.networks.bitcoin);if(signerKeychain.isNeutered())throw new Error("expected user private key but received public key");debug(`Here is the public key of the xprv you used to sign: ${signerKeychain.neutered().toBase58()}`);const cosignerPub=null!==(_a=params.cosignerPub)&&void 0!==_a?_a:params.pubs[2],keychains=params.pubs.map((pub=>utxo_lib_1.bip32.fromBase58(pub))),cosignerKeychain=utxo_lib_1.bip32.fromBase58(cosignerPub);return{txHex:sign_1.signAndVerifyWalletTransaction(transaction,txPrebuild.txInfo.unspents,new utxo_lib_1.bitgo.WalletUnspentSigner(keychains,signerKeychain,cosignerKeychain),{isLastSignature}).toBuffer().toString("hex")}}isBitGoTaintedUnspent(unspent){return replayProtection_1.isReplayProtectionUnspent(unspent,this.network)}get defaultSigHashType(){return utxolib.bitgo.getDefaultSigHash(this.network)}verifySignature(transaction,inputIndex,amount,verificationSettings={}){if(transaction.network!==this.network)throw new Error("network mismatch");return utxolib.bitgo.verifySignature(transaction,inputIndex,amount,{signatureIndex:verificationSettings.signatureIndex,publicKey:verificationSettings.publicKey?Buffer.from(verificationSettings.publicKey,"hex"):void 0})}async explainTransaction(params){var _a,_b,_c;const txHex=_.get(params,"txHex");if(!txHex||!_.isString(txHex)||!txHex.match(/^([a-f0-9]{2})+$/i))throw new Error("invalid transaction hex, must be a valid hex string");let transaction;try{transaction=this.createTransactionFromHex(txHex)}catch(e){throw new Error("failed to parse transaction hex")}const id=transaction.getId();let spendAmount=utxolib.bitgo.toTNumber(0,this.amountType),changeAmount=utxolib.bitgo.toTNumber(0,this.amountType);const explanation={displayOrder:["id","outputAmount","changeAmount","outputs","changeOutputs"],id,outputs:[],changeOutputs:[]},{changeAddresses=[],unspents=[]}=null!==(_a=params.txInfo)&&void 0!==_a?_a:{};transaction.outs.forEach((currentOutput=>{const currentAddress=utxolib.address.fromOutputScript(currentOutput.script,this.network),currentAmount=currentOutput.value;if(changeAddresses.includes(currentAddress))return changeAmount+=currentAmount,void explanation.changeOutputs.push(