Emoji Sumator Final exam demo alternative (functions)

function solve(input) {
    let [text, encryptedEmoji] = input;
    let decryptedEmoji = decryptEmoji();
    let pattern = /(?<=\s):([a-z]{4,}):(?=[\s,.!?])/g;
    let allEmojis = [];
    let totalPower = 0;

    function sumAsciiCode(emoji) {
        let sum = emoji.split('').map(e => e.charCodeAt(0)).reduce((a, b) => a + b, 0);
        return sum;
    }

    function decryptEmoji() {
        let output = ':'
        let asciiCodes = encryptedEmoji.split(':').map(Number);
        let emoji = asciiCodes.map(e => String.fromCharCode(e)).join('');
        output = output + emoji + ':';
        return output;
    }

    let matches = pattern.exec(text);
    while (matches !== null) {
        let [emoji, emojiLetters] = matches;
        allEmojis.push(emoji);
        let currentPower = sumAsciiCode(emojiLetters);
        totalPower += currentPower;
        matches = pattern.exec(text);
    }
    if (allEmojis.includes(decryptedEmoji)) {
        totalPower = totalPower * 2;
    }
    if (allEmojis.length > 0) {
        console.log(`Emojis found: ${allEmojis.join(', ')}`);
    }
    console.log(`Total Emoji Power: ${totalPower}`);
}