google-foo-bar-braille-solution.js

const capitalizationMark = '000001';
const space = '000000';

function decodeString(word, binaryEncoded){
  var dict = {};
  word.split('').forEach(function(letter){
    if (/[A-Z]/.test(letter)) {
      binaryEncoded = binaryEncoded.replace(/^000001/, '');
    }
    var code = binaryEncoded.substr(0,6);
    dict[letter.toLowerCase()] = code;
    binaryEncoded = binaryEncoded.substr(6);
  });
  return dict;
}

function generateDict(pairs){
  var dict = {};
  for (var word in pairs) {
    var binaryEncoded = pairs[word];
    var tempDict = decodeString(word, binaryEncoded);
    Object.assign(dict, tempDict);
  }
  return dict;
}


var dict = generateDict({
  'code': '100100101010100110100010',
  'Braille': '000001110000111010100000010100111000111000100010',
  'The quick brown fox jumped over the lazy dog': '000001011110110010100010000000111110101001010100100100101000000000110000111010101010010111101110000000110100101010101101000000010110101001101100111100100010100110000000101010111001100010111010000000011110110010100010000000111000100000101011101111000000100110101010110110',
});

function encodeString(word, dict){
  return word.split('').map(function(letter){
    var code = '';
    if (/[A-Z]/.test(letter)) {
      code+= capitalizationMark;
    }
    code+= dict[letter.toLowerCase()];
    return code;
  })
  .join('');
}