v0.1.0 throws "panic: module already registered: k6/x/redis"

[vincentdaniel]

Since the extension was made importable by k6 in v0.1.0, we are getting an error when running k6 with xk6-redis:

goroutine 1 [running]:
go.k6.io/k6/js/modules.Register({0x102f1454e, 0xa}, {0x10325e5c0?, 0x103e44830})
	go.k6.io/k6@v0.38.2/js/modules/modules.go:54 +0x18c
github.com/grafana/xk6-redis.init.0()
	github.com/grafana/xk6-redis@v0.1.0/register.go:10 +0x3c

Steps to reproduce

script.js:

import redis from 'k6/x/redis';

export const redisClient = new redis.Client({
    addrs: new Array("localhost:6379"),
    password: 'redis',
    db: 0,
  });

export default function () {

}

script.sh

go install go.k6.io/xk6/cmd/xk6@latest
xk6 build --with github.com/grafana/xk6-redis
./k6 run script.js

./script.sh

Workaround

Use previous version : xk6 build --with github.com/grafana/xk6-redis@100588d

Comment

I guess the warning was there for a reason 😄
This extension is going under heavy changes and is about to make it to k6's core. USE AT YOUR OWN RISK!

But I wanted to still raise the issue in case there is a better workaround or a way to fix the current version to make it work with current readme 😉

[mstoykov]

Thanks for reporting this :bow. This was fixed with #11, but we forgot to mention it here.