Enables JIT mode

[coreymcollins]

WORK IN PROGRESS

DESCRIPTION

This enables Tailwind JIT mode.

OTHER

• Is this issue accessible? (Section 508/WCAG 2.0AA)
• Does this issue pass all the linting? (PHPCS, ESLint, SassLint)
• Does this pass CBT?

STEPS TO VERIFY

1. Checkout
2. Run npm i --legacy-peer-deps
3. Run npm run start or npm run watch
4. Observe the blazing speeds

DOCUMENTATION

Will this pull request require updating the wd_s wiki?

I don't think so? Nothing about our workflow really changes here except things get faster.

[coreymcollins]

There is one issue I'm running into where sourcemaps no longer seem to work with JIT enabled. This looks to be a common issue: tailwindlabs/tailwindcss#5043

I'd love to not have to create multiple config files to work around this issue so maybe there's a better solution we can come to.

[oliverharrison]

I'm going to close this as it will no longer be necessary once we update to TW3. Additionally, the source maps have been fixed in 3.0.24 💪🏻 .
tailwindlabs/tailwindcss#7588