Pinia nuxt version 0.6.0+ causes error when used with pnpm monorepo

[kalvenschraut]

Reproduction

https://stackblitz.com/~/github.com/kalvenschraut/pinia-nuxt-pnpm-monorepo-issue

Steps to reproduce the bug

To see issue do

pnpm install
pnpm --filter website1 run dev

can then downgrade @pinia/nuxt to 0.5.5 and run same commands to see it working. Can also upgrade to 0.6.1 to verify still not working

pnpm update @pinia/nuxt@0.5.5 -r
pnpm --filter website1 run dev

Expected behavior

Page to load and show the users name from the user store

Actual behavior

Additional information

In prod builds on my personal site where I first initial saw this was seeing vueDemi.effectScope is not a function error. Downgrading back to 0.5.5 for now until direction can be given

[rylanharper]

Can confirm. This is breaking all my Nuxt projects that use Pinia 😢

[maxdzin]

Same for my Nuxt + Pinia projects

[posva]

@rylanharper @maxdzin just thumbs up the issue, that way mantainers can sort issues and find the most searched ones 😉

[posva]

I did some research, and the problem persists even with upgraded Nuxt and pnpm. The cause of the problem is the removal of the alias for pinia in 65031ee
I needed that change to work in other scenarios so I will investigate this further. In the meantime, here is a workaround: add an alias to your nuxt.config so pinia is resolved correctly:

import { fileURLToPath } from 'node:url'
import path from 'node:path'

const rootDir = fileURLToPath(new URL('../..', import.meta.url))

export default defineNuxtConfig({
  modules: [ '@pinia/nuxt'],
  alias: {
   pinia: path.resolve(rootDir, 'node_modules/pinia/dist/pinia.mjs')
  }
});

Or exclude pinia from vite optimization:

export default defineNuxtConfig({
  modules: [ '@pinia/nuxt'],
  vite: {
    optimizeDeps: {
      exclude: ['pinia']
    }
  },
});

@danielroe I would like some help with this matter: in my tests, I have two copies of pinia in non monorepo nuxt applications. I still don't understand why this part of the Pinia module is so flaky, and I suppose it's more of an issue of Vite than Nuxt. But I imagine you have seen this issue often enough to guide me in the right direction (and add a note comment so my future self does not forget 😅)

[posva]

Using the shamefully-hoist=false also works

[posva]

I'm still not 100% sure of the fix being the right solution so I will keep this open until then