connect-redis no longer compatible with @fastify/session

[ctkc]

Prerequisites

• [X] I have written a descriptive issue title
• [X] I have searched existing issues to ensure the bug has not already been reported

Fastify version

4.24.3

Plugin version

10.6.0

Node.js version

18.17.0

Operating system

macOS

Operating system version (i.e. 20.04, 11.3, 10)

14.0

Description

Trying to make this plugin work with the latest version of connect-redis will fail since express-session is a peer dependency of it since version 7.0.0. RedisStore is extending Store from express-session and also using the SessionData type from it as you can see here: https://github.com/tj/connect-redis/blob/master/index.ts

This leads to the following issue when trying to run a project without express-session installed:

Error: Cannot find module 'express-session'

This can be fixed by downgrading the connect-redis version to v6.1.3

Steps to Reproduce

1. Set up a project with Fastify, @fastify/session and connect-redis
2. Run the project
3. You should get the error message mentioned above

Expected Behavior

No response

[casantosmu]

Everything is functioning properly. I simply duplicated the contents of examples/redis.js into a new file named /server.js and included the following package.json:

{
  "name": "fastify-session-redis",
  "version": "1.0.0",
  "main": "server.js",
  "scripts": {
    "start": "node ."
  },
  "dependencies": {
    "@fastify/cookie": "^9.2.0",
    "@fastify/session": "^10.6.0",
    "connect-redis": "^7.1.0",
    "fastify": "^4.24.3",
    "ioredis": "^5.3.2"
  }
}

[ctkc]

Everything is functioning properly. I simply duplicated the contents of examples/redis.js into a new file named /server.js and included the following package.json:

{
  "name": "fastify-session-redis",
  "version": "1.0.0",
  "main": "server.js",
  "scripts": {
    "start": "node ."
  },
  "dependencies": {
    "@fastify/cookie": "^9.2.0",
    "@fastify/session": "^10.6.0",
    "connect-redis": "^7.1.0",
    "fastify": "^4.24.3",
    "ioredis": "^5.3.2"
  }
}

Hm, that's weird, it doesn't make sense since the library is indeed requesting express-session as a peer dependency. The only possibility I see for not getting the error is having express-session installed globally in your machine.

Before I was trying over NestJs so I tried again following your steps and I'm still getting the same issue as you can see here

For me it makes total sense since I didn't install the library and connect-redis wants to make use of it.

[ctkc]

In case someone is experiencing the same issue, I've forked the original connect-redis library and made the necessary changes for it to work with @fastify/session. Anyone is more than welcome to contribute to it.

https://www.npmjs.com/package/fastify-session-redis-store

[mcollina]

I think it would be likely worthwhile to contribute RedisStore directly to this module. Would you like to send a PR?

[adaboese]

At a glance, https://github.com/mgcrea/fastify-session-redis-store/blob/master/src/RedisStore.ts looks like it is better implemented.

[adaboese]

Could not get @fastify/session to work despite trying for ours. Things like destroying session do not work. TypeScript types are confusing. It is possible that this was an issue with the fastify-session-redis-store not working.

Switched to https://github.com/mgcrea/fastify-session and it worked from first try.

@mcollina maybe deprecate in favor of https://github.com/mgcrea/fastify-session? Seems like a nice ecosystem that's well documented and tested.