[Feature request] Prevent unknown classes (that follow Tailwind convention)

[nicooprat]

Is your feature request related to a problem? Please describe.
Example: in our team, some developers keep confusing gray and grey.

Describe the solution you'd like
Would be cool to report bg-gray-100 as an error because it follows Tailwind convention but doesn't exist.

Describe alternatives you've considered

• We'd rather not duplicate the entries in the theme to prevent confusion & bloat in every tools (like IDE autocomplete, Storybook, ...).
• I thought about using no-restricted-syntax ESLint rule but it won't cover every case (Vue classes, @apply tags, ...)

Additional context
Add any other context or screenshots about the feature request here.

[kachkaev]

👋 @nicooprat! You should be able for that tailwindcss/no-custom-classname rule for that.

[nicooprat]

Hi, thanks for the suggestion, I tried a few regexes with the whitelist option to match everything BUT not *-gray-*, without luck. I guess something like a blacklist would be easier in my case.