emoji sumator - final exam

function solve(input) {

    let finalWord = input.pop();

    const convertToAscii = (string) => {

        let output = [];
        let result = "";

        const arr = string.split(":");

        arr.forEach((line) => {
            let current = String.fromCharCode(Number(line));
            output.push(current);
        });

        return result += output.join('');

    };

    finalWord = ':'+convertToAscii(finalWord)+':';

    const findAllEmoji = (string) => {

        //let pattern = /\s(:[a-z]{4,}:)[\s,.!?]/gm;
        let pattern = /(?<=[\s])(:[a-z]{4,}:)(?=[\s,.!?])/g;

        let validEmojis = [];
        let validEmoji = null;

        while ((validEmoji = pattern.exec(string)) !== null) {
            validEmojis.push(validEmoji[1]);
        }

        return validEmojis;
    };

    let validEmojisArray = findAllEmoji(input);

    const sumAllLetters = (line) => {

        let sum = 0;
        let totalSum = 0;

        line.forEach((elem) => {
            for (let i = 0; i < elem.length; i++) {

                let current = Number(elem.charCodeAt(i));
                sum += current;
            }
            sum -=116
        });

        return sum;
    };

    let totalSum = sumAllLetters(validEmojisArray);

    if(validEmojisArray.includes(finalWord)) {
        totalSum *=2;
    }


    if(validEmojisArray.length > 0) {
        console.log(`Emojis found: ${validEmojisArray.join(", ")}`);
    }
    console.log(`Total Emoji Power: ${totalSum}`);

}