Prettier not running on storybook files

[m-akinc]

🧹 Tech Debt

Prettier does not seem to be formatting on save like it used to when the story files were part of the nimble-components package.

[m-akinc]

Check with Jesse to make sure there aren't painful merges.

[fredvisser]

We need to update the .prettierignore file:

/*
!/packages
/packages/*
!/packages/storybook
!packages/nimble-components

…and likely add a .prettierrc.json file to the storybook folder:

{
    "tabWidth": 4,
    "useTabs": false,
    "trailingComma": "none",
    "singleQuote": true,
    "endOfLine": "auto",
    "proseWrap": "always"
}

The proseWrap option enables line wrapping in MDX files.