Cielo TLV parser.js

const A = require('arcsecond')

const tlv = A.recursiveParser(() => A.coroutine(function* () {
  const id = yield A.sequenceOf([
    A.digit,
    A.digit,
  ]).map(v => v.join(''));

  if(id == '80') {
    const length = yield A.sequenceOf([
      A.digit,
      A.digit,
      A.digit,
    ]).map(v => v.join(''));

    const transactionInformations = yield A.sequenceOf(
      Array.from({length: Number(length)}).map(() => A.anyChar)
    ).map(v => v.join(''))

    return {
      id,
      length,
      value: parser.run(transactionInformations)
    }
  }

  const length = yield A.sequenceOf([
    A.digit,
    A.digit,
  ]).map(v => v.join(''));

  const value = yield A.sequenceOf(
    Array.from({length: Number(length)}).map(() => A.anyChar)
  ).map(v => v.join(''))


  if(id === '26') {
    return {id, length, value: parser.run(value)}
  }

  return {id, length, value}
}));

const parser = A.many(tlv)

const emv = `00020101021226410005Cielo0116123456789012000102082009130352040000530398654120000000001005802BR5905CIELO6014SANTO ANDRE SP801010033"https://www.cielo.com.br/qrcode"011613050329197F190A0212150518113349030410000404000105020006020163049872`

const getIdValue = (id, tree) => {
  const field = tree.find(field => field.id === id)

  return field ? field.value : null
}

const treeToObject = tree => {
  const merchantAccountInformation = getIdValue("26", tree).result;
  const transactionInformations = getIdValue("80", tree).result;

  return {
      payloadFormatIndicator: getIdValue('00', tree),
      pointOfInitiationMethod: getIdValue("01", tree),
      merchantAccountInformation: {
        globallyUniqueIdentifier: getIdValue("00", merchantAccountInformation),
        merchantAccountInformation: getIdValue("01", merchantAccountInformation),
        logicNumber: getIdValue("02", merchantAccountInformation),
      },
      merchantCategory: getIdValue("52", tree),
      transactionCurrency: getIdValue("53", tree),
      transactionAmount: getIdValue("54", tree),
      countryCode: getIdValue("58", tree),
      merchantName: getIdValue("59", tree),
      merchantCity: getIdValue("60", tree),
      transactionInformations: {
        globallyUniqueIdentifier: getIdValue("00", transactionInformations),
        transactionId: getIdValue("01", transactionInformations),
        transactionDate: getIdValue("02", transactionInformations),
        mainProduct: getIdValue("03", transactionInformations),
        subProduct: getIdValue("04", transactionInformations),
        paymentInstallments: getIdValue("05", transactionInformations),
        transactionType: getIdValue("06", transactionInformations),
      },
      crc: getIdValue("63", tree),
  };
};

console.log(treeToObject(parser.run(emv).result))

module.exports.parser = parser
module.exports.treeToObject = treeToObject

parsed.js

const obj = {
  payloadFormatIndicator: '01',
  pointOfInitiationMethod: '12',
  merchantAccountInformation: {
    globallyUniqueIdentifier: 'Cielo',
    merchantAccountInformation: '1234567890120001',
    logicNumber: '20091303'
  },
  merchantCategory: '0000',
  transactionCurrency: '986',
  transactionAmount: '000000000100',
  countryCode: 'BR',
  merchantName: 'CIELO',
  merchantCity: 'SANTO ANDRE SP',
  transactionInformations: {
    globallyUniqueIdentifier: '"https://www.cielo.com.br/qrcode"',
    transactionId: '13050329197F190A',
    transactionDate: '150518113349',
    mainProduct: '1000',
    subProduct: '0001',
    paymentInstallments: '00',
    transactionType: '01'
  },
  crc: '9872'
}

result.json

[
  {
    "id": "00",
    "length": "02",
    "value": "01"
  },
  {
    "id": "01",
    "length": "02",
    "value": "12"
  },
  {
    "id": "26",
    "length": "41",
    "value": {
      "isError": false,
      "result": [
        {
          "id": "00",
          "length": "05",
          "value": "Cielo"
        },
        {
          "id": "01",
          "length": "16",
          "value": "1234567890120001"
        },
        {
          "id": "02",
          "length": "08",
          "value": "20091303"
        }
      ],
      "index": 41,
      "data": null
    }
  },
  {
    "id": "52",
    "length": "04",
    "value": "0000"
  },
  {
    "id": "53",
    "length": "03",
    "value": "986"
  },
  {
    "id": "54",
    "length": "12",
    "value": "000000000100"
  },
  {
    "id": "58",
    "length": "02",
    "value": "BR"
  },
  {
    "id": "59",
    "length": "05",
    "value": "CIELO"
  },
  {
    "id": "60",
    "length": "14",
    "value": "SANTO ANDRE SP"
  },
  {
    "id": "80",
    "length": "101",
    "value": {
      "isError": false,
      "result": [
        {
          "id": "00",
          "length": "33",
          "value": "\"https://www.cielo.com.br/qrcode\""
        },
        {
          "id": "01",
          "length": "16",
          "value": "13050329197F190A"
        },
        {
          "id": "02",
          "length": "12",
          "value": "150518113349"
        },
        {
          "id": "03",
          "length": "04",
          "value": "1000"
        },
        {
          "id": "04",
          "length": "04",
          "value": "0001"
        },
        {
          "id": "05",
          "length": "02",
          "value": "00"
        },
        {
          "id": "06",
          "length": "02",
          "value": "01"
        }
      ],
      "index": 101,
      "data": null
    }
  },
  {
    "id": "63",
    "length": "04",
    "value": "9872"
  }
]