Desctruct Address component from input String

index.js

const DEFINED = require('./malaysia');

String.prototype.toTitleCase = function () {
  return this.toLowerCase().replace(/\b(\w)/g, s => s.toUpperCase());
}

String.prototype.formatAdrressText = function() {
  return this.replace(/[,.\n]/g, "") // remove unwanted chars
    .toLowerCase()
    .replace(new RegExp("malaysia", 'g'), "") // unnecessary
    .replace(/\s{2,}/g, " ") // remove extra spaces
    .trim();
};

// split original text received without formatting
String.prototype.mapAddressInput = function () {
  return this
    .toLowerCase()
    .split(",")
    .map(e => e.replace(/\s{2,}/g, ' ').trim());
}


/***
 * @param {String} [e]
 * @return {Boolean}
 */
function isPostcode(e) {
  return (
    typeof parseFloat(e) === "number" && !isNaN(e) && 1000 <= e && e <= 98859
  );
}

/***
 * @param {String} [e]
 * @return {Boolean}
 */
function isStreet(e) {
  let street = {
    "jalan": 1,
    "jln": 1,
    "persiaran": 1,
    "lorong": 1
  }
  return street[e] === 1;
}

/***
 * @param {String} [e]
 * @return {Boolean}
 */
function isApt(e) {
  return e === "no"
}


/***
 * @param {String} [e]
 * @return {Boolean}
 */
function isNextAptSeries(e) {
  e = e.replace(/\D+/g, ""); // \D non digits
  return !isNaN(parseFloat(e)) && isFinite(e);
}


/***
 * Get defined (state, city)
 * @param {Object} [address]
 * @param {Integer} [index] - index of array need to check
 * @param {Integer} [maxSyllables] - max count syllables (e.g. 'kuala lumpur': 2, 'pahang': '1' )
 * @return {Object} {...address, city, state} 
 */
Array.prototype.getDefinedElement = function (address, index, maxSyllables = 2) {
  for (let countSyl = maxSyllables; countSyl >= 1; countSyl--) {
    let text = this.slice(index, index + countSyl).join(" ");
    if (DEFINED[text] && !address[DEFINED[text]]) {
      address[DEFINED[text]] = text.toTitleCase();
      this.splice(index, countSyl);
    }
  }
  return address;
}


function destructAddress(text) {
  let unformattedUnk = text.mapAddressInput();

  let unk = text.formatAdrressText().split(" ");

  let index = 0, address = {}, streetIndex;
  while (unk[index]) {
    let element = unk[index];
    // console.log("check", element);

    if (isApt(element)) {
      let countAptSeries = 1, nextAptSeries = unk[index + 1];
      while (isNextAptSeries(nextAptSeries)) {
        countAptSeries += 1;
        nextAptSeries = unk[index + countAptSeries];
      }
      address['apt'] = unk.splice(index, countAptSeries).join(" ").toTitleCase();
      continue;
    }



    if (isPostcode(element)) {
      address['postcode'] = element.toTitleCase();
      unk.splice(index, 1);
      continue;
    }

    address = unk.getDefinedElement(address, index);

    if (isStreet(element)) {
      streetIndex = index; // check after looping
    }

    if (element === unk[index]) index += 1;
  }

  // WORST CASE!!! Only success if street is wrap between ','
  if (streetIndex !== undefined) {
    let street = unformattedUnk.find(e => e.includes(unk[streetIndex]));
    if (street) {
      let streetCount = street.split(" ").length;
      let checkStreetSeq = unk.slice(streetIndex, streetIndex + streetCount).join(" ");

      if (street === checkStreetSeq) {
        street =  unk.splice(streetIndex, streetCount).join(" ").toTitleCase();
        address["street"] = street;
      }
    }
  }


  address['section'] = unk.join(" ").toTitleCase();
  return address;
}



// let input = "  No 11, Chendering,      21080  Kuala Terengganu, Terengganu.";
let input = `No 10-2-6 PANGSAPURI BULAN, Jalan 18/39A, taman sri sinar, 51201 Kuala Lumpur.`;
// let input = `No L-4-1, Solaris Mont Kiara, Jalan  Solaris, Kuala Lumpur 50480, Malaysia`;

let result = destructAddress(input);
console.log(result);

malaysia.js

const MALAYSIA = {
  // STATES
  "johor": "state",
  "kedah": "state",
  "kelantan": "state",
  "melaka": "state",
  "negeri sembilan": "state",
  "pahang": "state",
  "perak": "state",
  "perlis": "state",
  "pulau pinang": "state",
  "sarawak": "state",
  "selangor": "state",
  "terengganu": "state",
  "sabah": "state",
  "Wilayah Persekutuan": "state",

  // CITIES
  "johor bahru": "city",
  "tebrau": "city",
  "pasir gudang": "city",
  "bukit indah": "city",
  "skudai": "city",
  "kluang": "city",
  "batu pahat": "city",
  "muar": "city",
  "ulu tiram": "city",
  "senai": "city",
  "segamat": "city",
  "kulai": "city",
  "kota tinggi": "city",
  "pontian kechil": "city",
  "tangkak": "city",
  "bukit bakri": "city",
  "yong peng": "city",
  "pekan nenas": "city",
  "labis": "city",
  "mersing": "city",
  "simpang renggam": "city",
  "parit raja": "city",
  "kelapa sawit": "city",
  "buloh kasap": "city",
  "chaah": "city",
  "sungai petani": "city",
  "alor setar": "city",
  "kulim": "city",
  "jitra / kubang pasu": "city",
  "baling": "city",
  "pendang": "city",
  "langkawi": "city",
  "yan": "city",
  "sik": "city",
  "kuala nerang": "city",
  "pokok sena": "city",
  "bandar baharu": "city",
  "kota bharu": "city",
  "pangkal kalong": "city",
  "tanah merah": "city",
  "peringat": "city",
  "wakaf baru": "city",
  "kadok": "city",
  "pasir mas": "city",
  "gua musang": "city",
  "kuala krai": "city",
  "tumpat": "city",
  "bandaraya melaka": "city",
  "bukit baru": "city",
  "ayer keroh": "city",
  "klebang": "city",
  "masjid tanah": "city",
  "sungai udang": "city",
  "batu berendam": "city",
  "alor gajah": "city",
  "bukit rambai": "city",
  "ayer molek": "city",
  "bemban": "city",
  "kuala sungai baru": "city",
  "pulau sebang": "city",
  "seremban": "city",
  "port dickson": "city",
  "nilai": "city",
  "bahau": "city",
  "tampin": "city",
  "kuala pilah": "city",
  "kuantan": "city",
  "temerloh": "city",
  "bentong": "city",
  "mentakab": "city",
  "raub": "city",
  "jerantut": "city",
  "pekan": "city",
  "kuala lipis": "city",
  "bandar jengka": "city",
  "bukit tinggi": "city",
  "ipoh": "city",
  "taiping": "city",
  "sitiawan": "city",
  "simpang empat": "city",
  "teluk intan": "city",
  "batu gajah": "city",
  "lumut": "city",
  "kampung koh": "city",
  "kuala kangsar": "city",
  "sungai siput utara": "city",
  "tapah": "city",
  "bidor": "city",
  "parit buntar": "city",
  "ayer tawar": "city",
  "bagan serai": "city",
  "tanjung malim": "city",
  "lawan kuda baharu": "city",
  "pantai remis": "city",
  "kampar": "city",
  "kangar": "city",
  "kuala perlis": "city",
  "bukit mertajam": "city",
  "georgetown": "city",
  "sungai ara": "city",
  "gelugor": "city",
  "ayer itam": "city",
  "butterworth": "city",
  "val d’or": "city",
  "perai": "city",
  "nibong tebal": "city",
  "permatang kucing": "city",
  "tanjung tokong": "city",
  "kepala batas": "city",
  "tanjung bungah": "city",
  "juru": "city",
  "kota kinabalu": "city",
  "sandakan": "city",
  "tawau": "city",
  "lahad datu": "city",
  "keningau": "city",
  "putatan": "city",
  "donggongon": "city",
  "semporna": "city",
  "kudat": "city",
  "kunak": "city",
  "papar": "city",
  "ranau": "city",
  "beaufort": "city",
  "kinarut": "city",
  "kota belud": "city",
  "kuching": "city",
  "miri": "city",
  "sibu": "city",
  "bintulu": "city",
  "limbang": "city",
  "sarikei": "city",
  "sri aman": "city",
  "kapit": "city",
  "batu delapan bazaar": "city",
  "kota samarahan": "city",
  "subang jaya": "city",
  "klang": "city",
  "ampang jaya": "city",
  "shah alam": "city",
  "petaling jaya": "city",
  "cheras": "city",
  "kajang": "city",
  "selayang baru": "city",
  "rawang": "city",
  "taman greenwood": "city",
  "semenyih": "city",
  "banting": "city",
  "balakong": "city",
  "gombak setia": "city",
  "kuala selangor": "city",
  "serendah": "city",
  "bukit beruntung": "city",
  "pengkalan kundang": "city",
  "jenjarom": "city",
  "sungai besar": "city",
  "batu arang": "city",
  "tanjung sepat": "city",
  "kuang": "city",
  "kuala kubu baharu": "city",
  "batang berjuntai": "city",
  "bandar baru salak tinggi": "city",
  "sekinchan": "city",
  "sabak": "city",
  "tanjung karang": "city",
  "beranang": "city",
  "sungai pelek": "city",
  "kuala terengganu": "city",
  "chukai": "city",
  "dungun": "city",
  "kerteh": "city",
  "kuala berang": "city",
  "marang": "city",
  "paka": "city",
  "jerteh": "city",
  "kuala lumpur": "city",
  "labuan": "city",
  "putrajaya": "city"
}

module.exports = MALAYSIA