emvqrcode-tools
v1.0.10
Published
Typescript module to create and parse EMV QR Code. Pix & EthereumTransaction support.
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EMV QR Code Tools
Typescript module to create and parse EMV QR Code. Pix & EthereumTransaction support.
Install
yarn add emvqrcode-tools
Usage
Static PixBrCode
import {PixBrCode} from "emvqrcode-tools"
const run = async ()=>{
const brCode = new PixBrCode({
pixKey: "PIX_KEY_HERE",
additionalInfo: "Some message",
merchantName: "Guilherme Henrique",
merchantCity: "Sao Paulo",
postalCode: "086300000",
transactionAmount: "10.01",
referenceLabel: "foo123bar"
})
console.log(brCode.get())
}
run()
Static EthereumTransactionCode
import { EthereumCode } from "emvqrcode-tools"
import Web3 from "web3"
import { toChecksumAddress, toWei } from "web3-utils"
const run = async () => {
const web3 = new Web3(new Web3.providers.HttpProvider("https://data-seed-prebsc-1-s3.binance.org:8545"))
const defaultGas = "21000"
const from = toChecksumAddress("0xFROM_ADDRESS")
const to = toChecksumAddress("0xTO_ADDRESS")
const value = toWei("0.000171")
const gasPrice = toWei("15", "Gwei")
const nonce = await web3.eth.getTransactionCount(from, "pending")
const ethereumCode = new EthereumCode({
transactionConfig: {
nonce,
from,
to,
chainId: 97,
value,
gas: defaultGas,
gasPrice,
data: "0xa9059cbb000000000000000000000000ab518cd35e0cc361fe7687c3cf6b81147aa62d740000000000000000000000000000000000000000000000008ac7230489e80000"
},
provider: {
host: "https://data-seed-prebsc-1-s3.binance.org:8545"
},
additionalInfo: "Some message",
merchantName: "Guilherme Henrique",
merchantCity: "São Paulo",
postalCode: "086300000"
})
const code = ethereumCode.get()
console.log(code)
console.log(EthereumCode.parse(code))
}
run()