Vue2.extend is not a function once built with Vite.

[Doltario]

Vue2.extend is not a function once built with Vite.

[Doltario]

For people that would encounter that problem with vue 2.7.14.
After some investigation I was able to state that the issue comes from packages/baklavajs-plugin-renderer-vue. It has a dependency on "portal-vue" (version ^2.1.7) which itself has a dependency on Vue, version ^2.6.7.

In this portal-vue github issue, a similar problem is describe and is solved by adding two aliases in the vite.config.js:

// Import path at file start, like import path from 'path'

alias: {
  'vue': 'vue/dist/vue.js',
  'vue$': path.resolve('/node_modules/vue/dist/vue.esm.js'),
}

And somehow it works.