v4.17.0 breaking change for Redis parser

Release v4.17.0 fails to parse username:password combinations for redis version 5 and lower. The Rediss / Redis URL connection strings are no longer valid.

[ERROR] The server returned "wrong number of arguments for 'auth' command". You are probably passing both username and password to Redis version 5 or below. You should only pass the 'password' option for Redis version 5 and under.
[ioredis] Unhandled error event: ReplyError: NOAUTH Authentication required.

[luin]

@Kikobeats I can’t reproduce this issue locally with the following code:

const redis = new Redis("redis://:authpassword@127.0.0.1:6379/4");

Could you log redis.options and post the result here? username property should be null.

[Kikobeats]

@luin it isn’t a thing related with the username: I’m experimenting the same behavior and essentially any URI string like

// Connect to 127.0.0.1:6380, db 4, using password "authpassword":
new Redis("redis://:authpassword@127.0.0.1:6380/4");

doesn’t work using at v4.17.0, but works as expected at v4.16.x