Working on the beginnings of a shared library

Shared/utility.js

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+//initialize the exports
+exports = module.exports = {};
+
+//GetFooterCommands - Gets footer commands for botspam channel commands
+//commandArray - the array of possible commands to use
+//excludeCommand (optional) - the command to filter out
+exports.GetFooterCommands = function(commandArray, excludeCommand = null) {
+	let filteredCommandList = commandArray.filter(command => command !== excludeCommand);
+
+	let returnText = "";
+	filteredCommandList.forEach(command => {
+		if (returnText.length !== 0) { //if this isn't the first command, prepend the separator to this command
+			returnText += " | ";
+		}
+		returnText += command;
+	});
+
+	return returnText;
+}
+
+//IsAdmin
+//client - discord.js client
+//user - discord.js user OR username
+exports.IsAdmin = function(client, user) {
+	//handle user strings
+	if (typeof(user) === "string") {
+		user = client.users.find(item => item.username === user);
+	}
+
+	let guild = client.guilds.get(process.env.SANCTUM_ID);
+
+	return guild.members.get(user.id).roles.find(role => role.name === process.env.ADMIN_ROLE) != null;
+}
+
+//SplitArray
+//arr - 1 dimensional array to split into chunks
+//chunkSize - the size of the chunks in the resulting array
+exports.SplitArray = function(arr, chunkSize) {
+	// http://www.frontcoded.com/splitting-javascript-array-into-chunks.html
+	let groups = [];
+	for (let i = 0; i < arr.length; i += chunkSize) {
+		groups.push(arr.slice(i, i + chunkSize));
+	}
+	return groups;
+}
+
+/*
+// See if the bot should display its message
+function checkValidDisplay(member, channelID, checkRole) {
+	if (client.user.username == "Kamala, Obsidian Vice President"	   && channelID === process.env.GROUP_A_BOT_ID) {
+		if (checkRole) { if (member.roles.has(process.env.GROUP_A_ROLE)) return true; } else true;
+	}
+	else if (client.user.username == "Captain Montgomery"				&& channelID === process.env.GROUP_B_BOT_ID) {
+		if (checkRole) { if (member.roles.has(process.env.GROUP_B_ROLE)) return true; } else true;
+	}
+	else if (client.user.username == "Dairo, High Prophet of The Hand"  && channelID === process.env.GROUP_C_BOT_ID) {
+		if (checkRole) { if (member.roles.has(process.env.GROUP_C_ROLE)) return true; } else true;
+	}
+	else if (client.user.username == "Ghost 5.0.1") {		
+		// JSON
+		const rooms = require('../TextAdv/rooms.json');
+		var roomExists = false;
+
+		// Loops for all rooms
+		rooms.rooms.forEach(element => {
+			if (channelID === rooms[element].channel) roomExists = true; 
+		});
+
+		if (!roomExists) {
+			if (channelID === process.env.TEST_CHANNEL_ID) return true;
+		} else return true;
+	
+	}
+
+	return false;
+}
+*/