@keyban/sdk-base/dist/stellar-REZKRHRW.mjs.map

Keyban Javascript SDK provides core functionalities for the MPC wallet solution, supporting web and Node.js apps with TypeScript, custom storage, and Ethereum blockchain integration.

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eslint-disable @typescript-eslint/no-unused-vars */\nimport {\n  Asset,\n  BASE_FEE,\n  Horizon,\n  Operation,\n  rpc,\n  Transaction,\n  TransactionBuilder,\n} from \"@stellar/stellar-sdk\";\nimport { BigNumber } from \"bignumber.js\";\nimport { Buffer } from \"buffer\";\n\nimport {\n  Address,\n  EstimateERC20TransferParams,\n  EstimateNftTransferParams,\n  FeesEstimation,\n  Hash,\n  Hex,\n  KeybanAccount,\n  SdkError,\n  TransferERC20Params,\n  TransferNftParams,\n} from \"~/index\";\nimport { RpcClient } from \"~/rpc\";\nimport { StellarSigner } from \"~/stellar/signer\";\n\nconst TX_VALIDITY_DURATION = 25; // Slightly below the default polling timeout of 30 seconds\nconst STELLAR_DECIMALS = 7;\nBigNumber.config({\n  DECIMAL_PLACES: STELLAR_DECIMALS,\n});\n\nexport class StellarAccount extends KeybanAccount {\n  address: string;\n  publicKey: string;\n  #signer: StellarSigner;\n  #rpcProvider: rpc.Server;\n  #horizonServer: Horizon.Server;\n\n  constructor(\n    rpcClient: RpcClient,\n    rpcProvider: rpc.Server,\n    horizonServer: Horizon.Server,\n    signer: StellarSigner,\n    publicKey: string,\n  ) {\n    super(rpcClient);\n\n    this.#rpcProvider = rpcProvider;\n    this.#horizonServer = horizonServer;\n    this.#signer = signer;\n\n    this.address = publicKey; // stellar addresses aren't hexa https://stellar.github.io/js-stellar-sdk/Address.html#Address\n    this.publicKey = publicKey; // account.accountId == publicKey == address\n  }\n\n  async signMessage(message: string): Promise<Hex | string[]> {\n    const hash = await crypto.subtle.digest(\n      \"SHA-256\",\n      new TextEncoder().encode(message),\n    );\n    const signedMessage = await this.#signer.sign(Buffer.from(hash));\n    return signedMessage.toString(\"base64\");\n  }\n\n  async transfer(\n    to: Address,\n    value: bigint,\n    fee?: StellarFeeDetails,\n  ): Promise<string> {\n    if (value <= 0n) {\n      throw new SdkError(\n        SdkError.types.AmountInvalid,\n        \"KeybanAccount.transfer\",\n      );\n    }\n\n    const [account, networkDetails] = await Promise.all([\n      this.#rpcProvider.getAccount(this.address),\n      this.#rpcProvider.getNetwork(),\n    ]);\n\n    const paymentTxBuilder = new TransactionBuilder(account, {\n      fee: fee ?? BASE_FEE,\n      networkPassphrase: networkDetails.passphrase,\n    });\n    const formattedAmount = BigNumber(value)\n      .dividedBy(10 ** STELLAR_DECIMALS)\n      .toString();\n    const recipientExists = await this.#isAccountCreated(to);\n\n    if (recipientExists) {\n      paymentTxBuilder.addOperation(\n        Operation.payment({\n          destination: to,\n          asset: Asset.native(),\n          amount: formattedAmount,\n        }),\n      );\n    } else {\n      paymentTxBuilder.addOperation(\n        Operation.createAccount({\n          destination: to,\n          startingBalance: formattedAmount,\n        }),\n      );\n    }\n    const paymentTx = paymentTxBuilder.setTimeout(TX_VALIDITY_DURATION).build();\n\n    // sign the transaction\n    const signature = await this.#signer.signDecorated(paymentTx.hash());\n    paymentTx.addDecoratedSignature(signature);\n\n    // submit the transaction to the network\n    return this.#submitTransaction(paymentTx, \"transfer\");\n  }\n\n  async estimateTransfer(_to: Address): Promise<FeesEstimation> {\n    const operationCount = 1n; // 1 operation for native transfer\n    const feesPerOperation = await this.#recommendedFeesPerOperation();\n    const maxFees = feesPerOperation * operationCount;\n    return {\n      maxFees,\n      details: feesPerOperation.toString(),\n    };\n  }\n\n  async transferERC20({\n    contractAddress,\n    to,\n    value,\n    fees,\n  }: TransferERC20Params<StellarFeeDetails>): Promise<string> {\n    const recipientExists = await this.#isAccountCreated(to);\n    if (!recipientExists) {\n      throw new SdkError(\n        SdkError.types.AddressInvalid,\n        \"KeybanAccount.transferERC20\",\n      );\n    }\n\n    if (!/^[a-zA-Z0-9]+:[a-zA-Z0-9]+$/.test(contractAddress)) {\n      throw new SdkError(\n        SdkError.types.AddressInvalid,\n        \"KeybanAccount.transferERC20\",\n      );\n    }\n\n    if (to === this.address) {\n      throw new SdkError(\n        SdkError.types.RecipientAddressEqualsSender,\n        \"KeybanAccount.transferERC20\",\n      );\n    }\n\n    if (value <= 0n) {\n      throw new SdkError(\n        SdkError.types.AmountInvalid,\n        \"KeybanAccount.transferERC20\",\n      );\n    }\n\n    const [assetCode, assetIssuer] = contractAddress.split(\":\");\n    const asset = new Asset(assetCode, assetIssuer);\n\n    const [account, networkDetails] = await Promise.all([\n      this.#rpcProvider.getAccount(this.address),\n      this.#rpcProvider.getNetwork(),\n    ]);\n\n    const formattedAmount = BigNumber(value)\n      .dividedBy(10 ** STELLAR_DECIMALS)\n      .toString();\n\n    const paymentTx = new TransactionBuilder(account, {\n      fee: fees ?? BASE_FEE,\n      networkPassphrase: networkDetails.passphrase,\n    })\n      .addOperation(\n        Operation.payment({\n          destination: to,\n          asset,\n          amount: formattedAmount,\n        }),\n      )\n      .setTimeout(TX_VALIDITY_DURATION)\n      .build();\n\n    // sign the transaction\n    const signature = await this.#signer.signDecorated(paymentTx.hash());\n    paymentTx.addDecoratedSignature(signature);\n\n    // submit the transaction to the network\n    return this.#submitTransaction(paymentTx, \"transferERC20\");\n  }\n\n  async estimateERC20Transfer(\n    _params: EstimateERC20TransferParams,\n  ): Promise<FeesEstimation> {\n    const operationCount = 1n; // 1 operation for native transfer\n    const feesPerOperation = await this.#recommendedFeesPerOperation();\n    const maxFees = feesPerOperation * operationCount;\n    return {\n      maxFees,\n      details: feesPerOperation.toString(),\n    };\n  }\n\n  transferNft(_params: TransferNftParams<StellarFeeDetails>): Promise<Hash> {\n    throw new Error(\"transferNft not implemented.\");\n  }\n\n  estimateNftTransfer(\n    _params: EstimateNftTransferParams,\n  ): Promise<FeesEstimation> {\n    throw new Error(\"estimateNftTransfer not implemented.\");\n  }\n\n  async #submitTransaction(\n    tx: Transaction,\n    functionName: string,\n  ): Promise<string> {\n    return this.#rpcProvider\n      .sendTransaction(tx)\n      .then(async (response) => {\n        if (response.status !== \"PENDING\") {\n          if (JSON.stringify(response).includes(\"txInsufficientBalance\")) {\n            throw new SdkError(\n              SdkError.types.InsufficientFunds,\n              \"KeybanAccount.transferERC20\",\n            );\n          }\n          throw new SdkError(\n            SdkError.types.UnknownTransactionError,\n            `KeybanAccount.${functionName}`,\n            {\n              SendTransactionResponse:\n                response.errorResult?.result() ?? response,\n            },\n          );\n        }\n        return this.#rpcProvider.pollTransaction(response.hash);\n      })\n      .then((finalResponse) => {\n        if (JSON.stringify(finalResponse).includes(\"txInsufficientBalance\")) {\n          throw new SdkError(\n            SdkError.types.InsufficientFunds,\n            \"KeybanAccount.transferERC20\",\n          );\n        }\n        switch (finalResponse.status) {\n          case rpc.Api.GetTransactionStatus.NOT_FOUND:\n            throw new SdkError(\n              SdkError.types.UnknownTransactionError,\n              `KeybanAccount.${functionName}`,\n              {\n                transactionResponse: JSON.stringify(finalResponse),\n              },\n            );\n          case rpc.Api.GetTransactionStatus.FAILED:\n            throw new SdkError(\n              SdkError.types.UnknownTransactionError,\n              `KeybanAccount.${functionName}`,\n              {\n                transactionResponse: finalResponse.resultXdr.result(),\n              },\n            );\n          case rpc.Api.GetTransactionStatus.SUCCESS:\n            return finalResponse.txHash;\n        }\n      });\n  }\n\n  async loyaltySetup(): Promise<void> {\n    const exists = await this.#isAccountCreated(this.address);\n    if (exists) {\n      console.log(\"Stellar Account already setup for Loyalty, nothing to do.\");\n      return;\n    }\n    console.log(\"Stellar Account not setup for Loyalty, setting it up now...\");\n    // Init the account setup\n    const rawTx = await this.rpcClient.call(\"loyalty\", \"initAccountSetup\");\n    // Decode the raw transaction\n    const { passphrase: networkPassphrase } =\n      await this.#rpcProvider.getNetwork();\n    const setupTx = new Transaction(rawTx, networkPassphrase);\n    // sign the transaction\n    const signature = await this.#signer.signDecorated(setupTx.hash());\n    setupTx.addDecoratedSignature(signature);\n    // serialize and submit the transaction to the network\n    await this.rpcClient.call(\"loyalty\", \"submitAccountSetup\", setupTx.toXDR());\n  }\n\n  async loyaltyDestroy(): Promise<void> {\n    const exists = await this.#isAccountCreated(this.address);\n    if (!exists) {\n      console.log(\"Stellar Account not setup for Loyalty, nothing to destroy.\");\n      return;\n    }\n    console.log(\"Stellar Account setup for Loyalty, destroying it now...\");\n    // Init the account destroy\n    const rawTx = await this.rpcClient.call(\"loyalty\", \"initAccountDestroy\");\n    // Decode the raw transaction\n    const { passphrase: networkPassphrase } =\n      await this.#rpcProvider.getNetwork();\n    const setupTx = new Transaction(rawTx, networkPassphrase);\n    // sign the transaction\n    const signature = await this.#signer.signDecorated(setupTx.hash());\n    setupTx.addDecoratedSignature(signature);\n    // serialize and submit the transaction to the network\n    await this.rpcClient.call(\n      \"loyalty\",\n      \"submitAccountDestroy\",\n      setupTx.toXDR(),\n    );\n  }\n\n  async #isAccountCreated(address: string): Promise<boolean> {\n    try {\n      await this.#rpcProvider.getAccount(address);\n      return true;\n    } catch {\n      return false;\n    }\n  }\n\n  async #recommendedFeesPerOperation(): Promise<bigint> {\n    const { max_fee } = await this.#horizonServer.feeStats();\n    return BigInt(max_fee.mode);\n  }\n\n  /**\n   * Sign a transaction hash.\n   * @param txHash - The transaction hash to sign.\n   * @internal\n   * @returns - The base64-encoded signature.\n   */\n  async signTransaction(txHash: string): Promise<string> {\n    const hash = Buffer.from(txHash, \"hex\");\n    const signature = await this.#signer.signDecorated(hash);\n    return signature.toXDR(\"hex\");\n  }\n}\n\n/**\n * Represents the fee details for Stellar transactions.\n * It corresponds to the fees per operation to be paid in case of a network congestion.\n * Otherwise it is always the base fee of 100 stroops (0.00001 XLM) per operation.\n */\nexport type StellarFeeDetails = string;\n","import { ed25519 } from \"@noble/curves/ed25519\";\nimport { KeypairType, StrKey, xdr } from \"@stellar/stellar-sdk\";\nimport { Buffer } from \"buffer\";\n\nimport { Hex } from \"~/index\";\nimport { RpcClient } from \"~/rpc\";\n\n/**\n * StellarSigner\n * This class provides functionality for signing transactions and messages on the Stellar blockchain.\n * It closely resembles the Keypair interface from the stellar-sdk, but its signing methods are asynchronous.\n */\nexport class StellarSigner {\n  type: KeypairType = \"ed25519\";\n\n  #rpcClient: RpcClient;\n  #clientShare: string;\n  #publicKey: Hex;\n\n  constructor(rpcClient: RpcClient, clientShare: string, publicKey: Hex) {\n    this.#rpcClient = rpcClient;\n    this.#clientShare = clientShare;\n    this.#publicKey = publicKey;\n  }\n\n  publicKey(): string {\n    return StrKey.encodeEd25519PublicKey(this.rawPublicKey());\n  }\n\n  rawPublicKey(): Buffer {\n    const publicKey = this.#publicKey.replace(/^0x/, \"\");\n    return Buffer.from(publicKey, \"hex\");\n  }\n\n  async sign(data: Buffer): Promise<Buffer> {\n    const hexSignature = await this.#rpcClient.call(\n      \"eddsa\",\n      \"sign\",\n      this.#clientShare,\n      data.toString(\"hex\"),\n    );\n    return Buffer.from(hexSignature, \"hex\");\n  }\n\n  async signDecorated(data: Buffer): Promise<xdr.DecoratedSignature> {\n    const signature = await this.sign(data);\n    const hint = this.signatureHint();\n\n    return new xdr.DecoratedSignature({ hint, signature });\n  }\n\n  async signPayloadDecorated(data: Buffer): Promise<xdr.DecoratedSignature> {\n    const signature = await this.sign(data);\n    const keyHint = this.signatureHint();\n\n    let hint = Buffer.from(data.slice(-4));\n    if (hint.length < 4) {\n      // append zeroes as needed\n      hint = Buffer.concat([hint, Buffer.alloc(4 - data.length, 0)]);\n    }\n\n    return new xdr.DecoratedSignature({\n      hint: hint.map((byte, i) => byte ^ keyHint[i]) as Buffer,\n      signature,\n    });\n  }\n\n  signatureHint(): Buffer {\n    const a = this.xdrAccountId().toXDR();\n    return a.slice(a.length - 4);\n  }\n\n  verify(data: Buffer, signature: Buffer): boolean {\n    try {\n      return ed25519.verify(signature, data, this.rawPublicKey());\n    } catch {\n      return false;\n    }\n  }\n\n  xdrAccountId(): xdr.AccountId {\n    return xdr.PublicKey.publicKeyTypeEd25519(this.rawPublicKey());\n  }\n\n  xdrPublicKey(): xdr.PublicKey {\n    return xdr.PublicKey.publicKeyTypeEd25519(this.rawPublicKey());\n  }\n\n  xdrMuxedAccount(id: string): xdr.MuxedAccount {\n    if (typeof id !== \"undefined\") {\n      if (typeof id !== \"string\") {\n        throw new TypeError(`expected string for ID, got ${typeof id}`);\n      }\n\n      return xdr.MuxedAccount.keyTypeMuxedEd25519(\n        new xdr.MuxedAccountMed25519({\n          id: xdr.Uint64.fromString(id),\n          ed25519: this.rawPublicKey(),\n        }),\n      );\n    }\n\n    return xdr.MuxedAccount.keyTypeEd25519(this.rawPublicKey());\n  }\n}\n","import { Horizon, rpc, StrKey } from \"@stellar/stellar-sdk\";\nimport { Buffer } from \"buffer\";\n\nimport { KeybanClientBase, KeybanClientConfig, MetadataConfig } from \"~/client\";\nimport { StellarAccount } from \"~/stellar/account\";\nimport { StellarSigner } from \"~/stellar/signer\";\n\nexport class StellarClient extends KeybanClientBase {\n  #metadataConfig: Promise<MetadataConfig>;\n\n  constructor(\n    config: KeybanClientConfig,\n    metadataConfig?: Promise<MetadataConfig>,\n  ) {\n    super(config, metadataConfig);\n    this.#metadataConfig =\n      metadataConfig ?? Promise.reject(new Error(\"metadataConfig is required\"));\n  }\n\n  async initialize(): Promise<StellarAccount> {\n    const key = `eddsa:${this.network}`;\n\n    let clientShare = await this.clientShareProvider.get(key);\n    if (!clientShare) {\n      clientShare = await this.rpcClient.call(\"eddsa\", \"dkg\");\n      await this.clientShareProvider.set(key, clientShare);\n    }\n\n    const [config, publicKey] = await Promise.all([\n      this.#metadataConfig,\n      this.rpcClient.call(\"eddsa\", \"publicKey\", clientShare),\n    ]);\n    if (!config.network.horizonUrl) {\n      throw new Error(\"Missing required horizonUrl in network config\");\n    }\n\n    const signer = new StellarSigner(this.rpcClient, clientShare, publicKey);\n\n    const stellarPubKey = StrKey.encodeEd25519PublicKey(\n      Buffer.from(publicKey, \"hex\"),\n    );\n\n    return new StellarAccount(\n      this.rpcClient,\n      new rpc.Server(config.network.rpcUrl),\n      new Horizon.Server(config.network.horizonUrl),\n      signer,\n      stellarPubKey,\n    );\n  }\n}\n"]}