[6.2.0-rc] Breaks HMR for vue with imported modules

Describe the bug Using storybook vue and the latest 6.2.0-rc10. Importing and using a function in a component works on the initial load after starting storybook. However, on changing something in the imported file, storybook breaks with the following error: TypeError: options is undefined (see screenshot below)

To Reproduce Steps to reproduce the behavior:

1. Clone repository: https://github.com/thomasaull/storybook-hmr-bug
2. npm run storybook
3. Visit button story
4. Go to stories/test.js and uncomment the last line

Expected behavior HMR should work for imported modules

Screenshots

Code snippets Repository: https://github.com/thomasaull/storybook-hmr-bug Commit which adds the breaking example: https://github.com/thomasaull/storybook-hmr-bug/commit/8bd8f5a134601ec4aedc7cc5e06c049d3cdd90bc

System

Environment Info:

  System:
    OS: Linux 5.4 elementary OS 5.1.7 Hera
    CPU: (12) x64 Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
  Binaries:
    Node: 14.16.0 - ~/.nvm/versions/node/v14.16.0/bin/node
    npm: 6.14.11 - ~/.nvm/versions/node/v14.16.0/bin/npm
  Browsers:
    Chrome: 89.0.4389.90
    Firefox: 85.0.1
  npmPackages:
    @storybook/addon-actions: ^6.2.0-rc.10 => 6.2.0-rc.10 
    @storybook/addon-essentials: ^6.2.0-rc.10 => 6.2.0-rc.10 
    @storybook/addon-links: ^6.2.0-rc.10 => 6.2.0-rc.10 
    @storybook/vue: ^6.2.0-rc.10 => 6.2.0-rc.10 

Additional context

• Does not occur with a vue-cli default setup
• Does not occur with storybook 6.1.x

┆Issue is synchronized with this Asana task by Unito

[shilman]

@thomasaull great detective work. can confirm that concatenateModules was NOT set in 6.1 and is currently being set in 6.2. Will discuss with @ndelangen and report back.

[thomasaull]

Awesome 😃 👍