Sidebar stories broken on Windows in 6.4-beta

[shilman]

Have not confirmed this, but appears that something in the new on-demand store is broken on Windows:

Repro:

ng new project
cd project
npx sb@next init

[shilman]

work in progress here https://github.com/storybookjs/storybook/tree/windows-debug2

[joshwooding]

I believe I have the same issue exposed in a different way. Using 6.4.0-beta.14 with Windows 10 I get the following error on startup:

ERROR in ./storybook-config-entry.js
Module build failed (from ./node_modules/@storybook/builder-webpack4/node_modules/babel-loader/lib/index.js):
SyntaxError: C:\...\storybook-config-entry.js: Bad character escape sequence. (12:45)

  10 | const getProjectAnnotations = () =>
  11 |   composeConfigs([
> 12 |     require('C:\...\node_modules\@storybook\addon-docs\dist\esm\frameworks\common\config.js'),
     |                                              ^
  13 |     require('C:\...\node_modules\@storybook\addon-docs\dist\esm\frameworks\react\config.js'),
  14 |     require('C:\...\node_modules\@storybook\react\dist\esm\client\preview\config.js'),
  15 |     require('C:\...\node_modules\@storybook\addon-links\dist\esm\preset\addDecorator.js'),
    at Object._raise (C:\...\node_modules\@babel\parser\src\parser\error.js:134:45)

I had a go at patching the changes made in windows-debug2 which fixed this error but other things break (I get infinite loading when starting storybook and building storybook statically loads the side panel but can't load any of the stories.

[shilman]

Yowza!! I just released https://github.com/storybookjs/storybook/releases/tag/v6.4.0-beta.19 containing PR #16445 that references this issue. Upgrade today to the @next NPM tag to try it out!

npx sb upgrade --prerelease

Closing this issue. Please re-open if you think there's still more to do.