Detect Links for Discord.js Bot

detectLink.js

const fetch = require('node-fetch');
var m_TLDs;

module.exports = {
    CheckMessage: async function(a_MessageReceived) {
        const l_MessageContent = a_MessageReceived.cleanContent.toLowerCase();
        const l_URLRegex = /([a-zA-Z\d]+:\/\/)?((\w+:\w+@)?([a-zA-Z\d.-]+\.[A-Za-z]{2,4})(:\d+)?(\/.*)?)/ig;
        const l_DetectedURLs = l_MessageContent.match(l_URLRegex);
        if (!l_DetectedURLs)
            return false;

        var l_Return = false;

        await l_DetectedURLs.forEach(a_URL => {
            const l_ThisTLD = a_URL.split(`.`).pop().toUpperCase();
            const l_JustTLD = l_ThisTLD.split(`/`).shift();
            if (m_TLDs.includes(l_JustTLD))
                l_Return = true;
        });

        return l_Return;
    },
    StartUp: async function() {
        const l_Response = await fetch(`https://data.iana.org/TLD/tlds-alpha-by-domain.txt`);
        const l_Body = await l_Response.text();
        const l_TLDs = l_Body.split(/\r?\n|\r|\n/g);
        l_TLDs.shift();
        m_TLDs = l_TLDs;
        return;
    }
}