Apply suggestions from code review

src/database.ts

@@ -25,7 +25,7 @@ let connection: mongoose.Connection;
 mongoose.set('strictQuery', true);
 
 export async function connect(): Promise<void> {
-	await mongoose.connect(`${uri}/${database}`, options);
+	await mongoose.connect(`${uri}/${database}`, options as mongoose.ConnectOptions);
 	connection = mongoose.connection;
 	connection.on('connected', function (this: mongoose.Connection) {
 		info(`MongoDB connected ${this.name}`);

src/redisCache.ts

@@ -1,10 +1,10 @@
-import redis from 'redis';
+import { createClient } from 'redis';
 import logger from '@/logger';
 import config from '../config.json';
 
 const { host, port } = config.redis;
 
-export const redisClient = redis.createClient({ socket: { host, port } });
+export const redisClient = createClient({ socket: { host, port } });
 
 redisClient.on('error', (error) => {
 	logger.error(error);

src/util.ts

@@ -3,7 +3,7 @@ import bmp from 'bmp-js';
 import crc32 from 'crc/crc32';
 import crypto from 'crypto';
 import HashMap from 'hashmap';
-import grpc from 'nice-grpc';
+import { createChannel, createClient, Metadata } from 'nice-grpc';
 import pako from 'pako';
 import { PNG } from 'pngjs';
 import sharp from 'sharp';