Emoji Sumator Final exam demo my solution

function solve(input) {
    let text = input.shift();
    let emojiCode = input.shift();

    let asciiCodes = emojiCode.split(':').map(Number);
    let emoji = asciiCodes.map(e => String.fromCharCode(e)).join('');
    emoji = ':' + emoji + ':';
    let pattern = /(?<=\s)(:[a-z]{4,}:)(?=[\s,.!?])/g;
    let validEmojis = [];

    let validEmoji = null;
    while ((validEmoji = pattern.exec(text)) !== null) {
        validEmojis.push(validEmoji[0]);
    }
    let totalPower = 0;
    validEmojis.forEach(element => {
        element = element.substring(1, element.length - 1);
        let elementSum = element.split('').map(e => e.charCodeAt(0)).reduce((a, b) => a + b, 0);
        totalPower += elementSum;
    });
    if (validEmojis.includes(emoji)) {
        totalPower = totalPower * 2;
    }

    if (validEmojis.length > 0) {
        console.log(`Emojis found: ${validEmojis.join(', ')}`);
    }

    console.log(`Total Emoji Power: ${totalPower}`);

}