morsee/src/dictionary.js

A simple decoder/encoder for morse code written in javascript

const letters = {
  a: '.-',
  b: '-...',
  c: '-.-.',
  d: '-..',
  e: '.',
  f: '..-.',
  g: '--.',
  h: '....',
  i: '..',
  j: '.---',
  k: '-.-',
  l: '.-..',
  m: '--',
  n: '-.',
  o: '---',
  p: '.--.',
  q: '--.-',
  r: '.-.',
  s: '...',
  t: '-',
  u: '..-',
  v: '...-',
  w: '.--',
  x: '-..-',
  y: '-.--',
  z: '--..',
}

const numbers = {
  0: '-----',
  1: '.----',
  2: '..---',
  3: '...--',
  4: '....-',
  5: '.....',
  6: '-....',
  7: '--...',
  8: '---..',
  9: '----.',
}

const nonEnglish = {
  á: '.--.-',
  à: '·−−·−', // shared by à, å
  ä: '·−·−', // shared by ä, æ, ą
  å: '·−−·−', // shared by à, å
  ą: '·−·−', // shared by ä, æ, ą
  æ: '·−·−', // shared by ä, æ, ą
  ć: '−·−··', // shared by ć, ĉ, ç
  ĉ: '−·−··', // shared by ć, ĉ, ç
  ç: '−·−··', // shared by ć, ĉ, ç
  đ: '··−··', // shared by đ, é, ę
  ð: '··−−·',
  é: '··−··', // shared by đ, é, ę
  è: '·−··−', // shared by è, ł
  ę: '··−··', // shared by đ, é, ę
  ĝ: '−−·−·',
  ĥ: '−−−−', // shared by ĥ, š
  ĵ: '·−−−·',
  ł: '·−··−', // shared by è, ł
  ń: '−−·−−', // shared by ń, ñ
  ñ: '−−·−−', // shared by ń, ñ
  ó: '−−−·', // shared by ó, ö, ø
  ö: '−−−·', // shared by ó, ö, ø
  ø: '−−−·', // shared by ó, ö, ø
  ś: '···−···',
  ŝ: '···−·',
  š: '−−−−', // shared by ĥ, š
  þ: '·−−··',
  ü: '··−−', // shared by ü, ŭ
  ŭ: '··−−', // shared by ü, ŭ
  ź: '−−··−·',
  ż: '−−··−',
}

const punctuation = {
  '&': '.-...',
  "'": '.----.',
  '@': '.--.-.',
  $: '···−··−',
  ')': '-.--.-',
  '(': '-.--.',
  ':': '---...',
  ',': '--..--',
  ';': '−·−·−·',
  '=': '-...-',
  '!': '-.-.--',
  '.': '.-.-.-',
  '-': '-....-',
  _: '··−−·−',
  '+': '.-.-.',
  '"': '.-..-.',
  '?': '..--..',
  '/': '-..-.',
}

const extra = {
  ' ': '/',
  '\n': '.-.-',
}

const toMorse = {
  ...letters,
  ...numbers,
  ...nonEnglish,
  ...punctuation,
  ...extra,
}

const fromMorse = Object.keys(toMorse).reduce(
  (obj, char) => ({ ...obj, [toMorse[char]]: char }),
  {}
)

module.exports = {
  toMorse,
  fromMorse,
}