day13.js

/*  Emojify!

Popular services like Slack and Github allow for emoji shortscodes, meaning 
they will detect when a word in a sentence begins and ends with a colon (:)
and automatically replace that word with an emoji. 

These shortcodes allow users to add an emoji to their messages by typing a 
code rather than searching for an emoji from a list. 

For example, typing :smile: will replace that text with 😊 

*/

const emojis = {
    "smile": "😊",
    "angry": "😠",
    "party": "🎉",
    "heart": "💜",
    "cat":   "🐱",
    "dog":   "🐕"
}

const emojifyWord = (word) => {
    const formattedWord = word.startsWith(':') && word.endsWith(':') ? word.slice(1,-1) : word
    return emojis[formattedWord] ? emojis[formattedWord] : formattedWord
}

const emojifyPhrase = (phrase) => phrase.split(' ').map((word) => emojifyWord(word)).join(' ')

console.log(emojifyWord(":heart:"));
console.log(emojifyWord(":flower:"));
console.log(emojifyWord("elephant"));

console.log(emojifyPhrase("I :heart: my :cat:"));
console.log(emojifyPhrase("I :heart: my :elephant:"));