Parse Pokémon Trading Card Online Deckstring

parseDeckstring.js

function importDeckString(deckString) {
  var lines = deckString.trim().split('\n');
  lines = lines.filter(item => item !== "");
  lines.pop()
  
  const cards = [];
  
  var numOfPokemon = 0
  var numOfTrainers = 0
  var numOfEnergy = 0
  lines.forEach((line,index)=>{
    if (line.startsWith('Pokémon:')) {
      numOfPokemon = parseInt(line.split(' ')[1])
    } else if (line.startsWith('Trainer:')) {
      numOfTrainers = parseInt(line.split(' ')[1])
    } else if (line.startsWith('Energy:')) {
      numOfEnergy = parseInt(line.split(' ')[1])
    } else {
      let splitLine = line.split(' ')
      let cardCount = parseInt(splitLine[0])
      var cardNumber;
      var setCode;
      var name;
      var type;
      var variant = ''
      if (parseInt(splitLine[splitLine.length - 1])) {
        cardNumber = parseInt(splitLine[splitLine.length - 1])
        setCode = splitLine[splitLine.length - 2]
        name = splitLine.slice(1,splitLine.length - 2).join(' ')
      } else {
        variant = splitLine[splitLine.length - 1]
        cardNumber = parseInt(splitLine[splitLine.length - 2])
        setCode = splitLine[splitLine.length - 3]
        name = splitLine.slice(1,splitLine.length - 3).join(' ')
      }
      
      name = replaceEnergyBrackets(name)
      
      if (index <= numOfPokemon) {
        type='Pokémon'
      } else if ((index > numOfPokemon) && (index <= numOfPokemon + numOfTrainers + 1)) {
        type='Trainer'
      } else {
        type='Energy'
        if (name.includes('Basic ')) {
          name = name.replace('Basic ','')
        }
      }
      cards.push({
        'count':cardCount,
        'name': name,
        'type': type,
        'set_code': setCode,
        'number': cardNumber,
        'variant': variant
      })
    }
  })
  updateTable(cards)
}

function replaceEnergyBrackets(string) {
  string = string
    .replace('{G}','Grass')
    .replace('{R}','Fire')
    .replace('{F}','Fighting')
    .replace('{W}','Water')
    .replace('{L}','Lightning')
    .replace('{P}','Psychic')
    .replace('{F}','Fighting')
    .replace('{D}','Darkness')
    .replace('{M}','Metal')
    .replace('{Y}','Fairy')
    .replace('{C}','Colorless')
    .replace('{D}','Dragon')
  return string
}