Lint all the things

server.js

@@ -22,7 +22,7 @@ const cookieParser = require("cookie-parser");
 const { Server } = require("socket.io");
 const { createAdapter } = require("@socket.io/redis-adapter");
 const { instrument } = require("@socket.io/admin-ui");
-const { isString, isEmpty, isFunction } = require("lodash");
+const { isString, isEmpty } = require("lodash");
 
 const logger = require("./server/utils/logger");
 const { applyRedisHelpers } = require("./server/utils/redisHelpers");
@@ -259,7 +259,7 @@ const applySocketIO = async ({ server, app }) => {
   const redisCluster = await connectToRedisCluster();
 
   // Handle errors
-  redisCluster.on("error", (err) => {
+  redisCluster.on("error", () => {
     logger.log(`Redis ERROR`, "ERROR", "redis", "api");
   });