(Article - You should aim to forget how your code works)

decodeMorse.js

const decodeMorse = (morseCode) => {
  // Morse words are separated by 3 spaces
  const morseWords = morseCode.trim().split('   ');
  return morseWords.map(morseWordToEnglishWord).join(' ');
}

const morseWordToEnglishWord = (morseWord) => {
  // Morse letters are separated by 1 space
  const morseLetters = morseWord.split(' ');
  return morseLetters.map(morseLetterToEnglishLetter).join('');
}

const morseLetterToEnglishLetter = (morseLetter) => {
  return MORSE_CODE[morseLetter];
}