__VUE_PROD_DEVTOOLS__ is not defined When SSR with prod mode

[cokemine]

Version

4.0.1

Reproduction link

https://github.com/cokemine/vuex-reproduce

Steps to reproduce

clone the repo.

yarn
yarn build
yarn start

What is expected?

prod mode works well like dev mode.

4.0.0 works normal

What is actually happening?

ReferenceError: VUE_PROD_DEVTOOLS is not defined

at Store.install (E:\vuex-reproduce\node_modules\vuex\dist\vuex.cjs.js:911:50)

[ysj151215]

I met this issue too.
My current solution is changing Vuex dependency version from "vuex": "^4.0.1" to "vuex": "4.0.0".

[cokemine]

I met this issue too.
My current solution is changing Vuex dependency version from "vuex": "^4.0.1" to "vuex": "4.0.0".

Yes. 4.0.0 can work.
It because 4.0.1 added setup devtools integration, #1949.
As I mentioned in the PR, it seems that https://github.com/vuejs/vuex/blob/4.0/rollup.config.js#L64 is not correct

[kiaking]

Fixed by #1992 🎉

[loremru]

problem still exist, 4.0.0 is ok

[casadelaweb]

What bundler does your project use?

If it's webpack, try adding this into your webpack.config.ts / webpack.config.js

// import webpack
const webpack = require('webpack')
// OR import webpack from 'webpack' if the project supports ES Modules

// then add plugin to your configuration
plugins: [
  'your plugins ...',
  new webpack.DefinePlugin({ __VUE_PROD_DEVTOOLS__: 'false', }),
],