Redis redis.createClient() in Typescript

Question

I was trying to connect Redis (v4.0.1) to my express server with typescript but having a bit issue. Am learning typescript. It's showing redlines on host inside redis.createClient() Can anyone help me out?

const host = process.env.REDIS_HOST;
const port = process.env.REDIS_PORT;
const redisClient = redis.createClient({
  host,
  port,
});

Argument of type '{ host: string | undefined; port: string | undefined; }' is not assignable to parameter of type 'Omit<RedisClientOptions<never, RedisScripts>, "modules">'.
  Object literal may only specify known properties, and 'host' does not exist in type 'Omit<RedisClientOptions<never, RedisScripts>, "modules">'.ts(2345)

Answer 1

Options have changed when redis updated to 4.0.1. This should help you.

Answer 2

This works as expected (redis v4.1.0)

const url = process.env.REDIS_URL || 'redis://localhost:6379';
const redisClient = redis.createClient({
    url
});