@coolwallet/xlm NPM

CoolWallet Stellar (XLM) SDK

Typescript library with support for the integration of Stella for third party application, include the functionalities of generation of addresses and signed transactions.

Install

npm i @coolwallet/xlm

Usage

import XLM from '@coolwallet/xlm'
import { TransactionBuilder } from 'stellar-sdk';
const xlm = new XLM(COIN_SPECIES); //COIN_SPECIES.XLM, COIN_SPECIES.KAU COIN_SPECIES.KAG

const address = await xlm.getAddress(transport, appPrivateKey, appId)
// GBKC7MNVXPYN75B6XB5BRBPXYXBDLKVEGJERPNQJPFOAGS2OFQICZBGG

const addressBip44 = await xlm.getAddress(transport, appPrivateKey, appId, 'BIP44');
// GBE6DJHSIR6RLPCTJLIYBCA7VUOFNJ5YW6MSAOJL3QQ4E2BI3OA5EFP4


const param = new TransactionBuilder(fundingAccount, {
	fee: parseInt(moveDecimal(fee, 7), 10),
	networkPassphrase: data.networkPassphrase,
})
	.addOperation(operation)
	.setTimeout(TimeoutInfinite)
	.addMemo(memo);

const tx = param.build();

const txData = {
	from: publicKey,
	to: publicKey,
	amount: value * 10000000,
	fee: tx.fee,
	sequence: tx.sequence,
	minTime: tx.timeBounds.minTime,
	maxTime: tx.timeBounds.maxTime,
	memoType: memoType,
	memo: "",
	isCreate: true
}

const signTxData = {
    transport,
    appPrivateKey,
    appId,
    transaction,
    protocol
}

const signatureTx = await xlm.signTransaction(signTxData)

In construct, you can choose the chain you want to implement.

Methods

getAddress

Description

CoolWallet currently support 2 derivation path, the default one is SLIP0010.

m/44'/94'/0'

We call the fourth parameter protocol, which can only be either 'BIP44' or 'SLIP0010'. You will need to specify the protocol parameter when you're signing a transaction.

async getAddress(
    transport: Transport, 
    appPrivateKey: string, 
    appId: string
): Promise<string>

Arguments

Arg	Description	Type	Required
transport	Object to communicate with CoolWallet device	Transport	TRUE
appPrivateKey	Private key for the connected application	string	TRUE
appId	ID for the connected application	string	TRUE
protocol	Define the protocol you're signing	PROTOCOL	FALSE

signTransaction

Description

We expect you to build transactions with the official stellar sdk. You can easily use the .signatureBase() method to get the buffer that CoolWallet needs for signing.

async signTransaction(signTxData: signTxType):Promise<string>

signTxType Arguments

Arg	Description	Type	Required
transport	Object to communicate with CoolWallet device	Transport	TRUE
appPrivateKey	Private key for the connected application	string	TRUE
appId	ID for the connected application	string	TRUE
transaction	Essential information/property for XLM Transaction	Object	TRUE
protocol	Define the protocol you're signing	PROTOCOL	FALSE
confirmCB	Callback of confirmation data to the connected application	Function	FALSE
authorizedCB	Callback of authorized transaction data to the connected application	Function	FALSE