getFullStateName

gistfile1.txt

/**
 * Converts an array of state abbreviations to their full name
 * @param {*} arr of strings
 */

function getFullStateName(arr) {
  if (!Array.isArray(arr)) return arr;
  const states = [];
  for (let i = 0; i < arr.length; i++) {
    const stateCode = String(arr[i]);
    switch (stateCode) {
      case "AL":
        states.push("Alabama");
        break;

      case "AK":
        states.push("Alaska");
        break;

      case "AS":
        states.push("American Samoa");
        break;

      case "AZ":
        states.push("Arizona");
        break;

      case "AR":
        states.push("Arkansas");
        break;

      case "CA":
        states.push("California");
        break;

      case "CO":
        states.push("Colorado");
        break;

      case "CT":
        states.push("Connecticut");
        break;

      case "DE":
        states.push("Delaware");
        break;

      case "DC":
        states.push("District Of Columbia");
        break;

      case "FM":
        states.push("Federated States Of Micronesia");
        break;

      case "FL":
        states.push("Florida");
        break;

      case "GA":
        states.push("Georgia");
        break;

      case "GU":
        states.push("Guam");
        break;

      case "HI":
        states.push("Hawaii");
        break;

      case "ID":
        states.push("Idaho");
        break;

      case "IL":
        states.push("Illinois");
        break;

      case "IN":
        states.push("Indiana");
        break;

      case "IA":
        states.push("Iowa");
        break;

      case "KS":
        states.push("Kansas");
        break;

      case "KY":
        states.push("Kentucky");
        break;

      case "LA":
        states.push("Louisiana");
        break;

      case "ME":
        states.push("Maine");
        break;

      case "MH":
        states.push("Marshall Islands");
        break;

      case "MD":
        states.push("Maryland");
        break;

      case "MA":
        states.push("Massachusetts");
        break;

      case "MI":
        states.push("Michigan");
        break;

      case "MN":
        states.push("Minnesota");
        break;

      case "MS":
        states.push("Mississippi");
        break;

      case "MO":
        states.push("Missouri");
        break;

      case "MT":
        states.push("Montana");
        break;

      case "NE":
        states.push("Nebraska");
        break;

      case "NV":
        states.push("Nevada");
        break;

      case "NH":
        states.push("New Hampshire");
        break;

      case "NJ":
        states.push("New Jersey");
        break;

      case "NM":
        states.push("New Mexico");
        break;

      case "NY":
        states.push("New York");
        break;

      case "NC":
        states.push("North Carolina");
        break;

      case "ND":
        states.push("North Dakota");
        break;

      case "MP":
        states.push("Northern Mariana Islands");
        break;

      case "OH":
        states.push("Ohio");
        break;

      case "OK":
        states.push("Oklahoma");
        break;

      case "OR":
        states.push("Oregon");
        break;

      case "PW":
        states.push("Palau");
        break;

      case "PA":
        states.push("Pennsylvania");
        break;

      case "PR":
        states.push("Puerto Rico");
        break;

      case "RI":
        states.push("Rhode Island");
        break;

      case "SC":
        states.push("South Carolina");
        break;

      case "SD":
        states.push("South Dakota");
        break;

      case "TN":
        states.push("Tennessee");
        break;

      case "TX":
        states.push("Texas");
        break;

      case "UT":
        states.push("Utah");
        break;

      case "VT":
        states.push("Vermont");
        break;

      case "VI":
        states.push("Virgin Islands");
        break;

      case "VA":
        states.push("Virginia");
        break;

      case "WA":
        states.push("Washington");
        break;

      case "WV":
        states.push("West Virginia");
        break;

      case "WI":
        states.push("Wisconsin");
        break;

      case "WY":
        states.push("Wyoming");
        break;
      default:
        return;
    }
  }
  return states;
}

getFullStateName(["AL", "MS", "GA", "FL", "SC", "NC", "KY", "TN", "VA"]);

/**
 * Expected
  [ 'Alabama', 
  'Mississippi', 
  'Georgia', 
  'Florida', 
  'South Carolina', 
  'North Carolina', 
  'Kentucky', 
  'Tennessee', 
  'Virginia' ]
 */