Merge pull request #984 from mbifulco/f/tailwindin-on-em

feat: migrate to tw@4

Author: mbifulco

.depcheckrc.json

@@ -8,11 +8,11 @@
     "@prettier/plugin-ruby",
     "@tailwindcss/forms",
     "@tailwindcss/typography",
+    "@tailwindcss/postcss",
     "@types/eslint",
     "@typescript-eslint",
     "@typescript-eslint/eslint-plugin",
     "@typescript-eslint/parser",
-    "autoprefixer",
     "depcheck",
     "eslint-*",
     "eslint",

package.json

@@ -8,7 +8,7 @@
   "scripts": {
     "analyze": "ANALYZE=true next build",
     "build": "next build",
-    "dev": "NODE_OPTIONS='--inspect' next dev",
+    "dev": "NODE_OPTIONS='--inspect' next dev --turbopack",
     "depcheck": "depcheck",
     "email": "email dev --dir ./src/utils/email/templates",
     "format": "prettier --write \"**/*.{js,jsx,ts,tsx,json,md,mdx}\"",
@@ -35,7 +35,6 @@
     "@trpc/react-query": "11.0.0-rc.666",
     "@trpc/server": "11.0.0-rc.666",
     "@types/mdx": "^2.0.13",
-    "autoprefixer": "^10.4.20",
     "clsx": "^2.1.1",
     "date-fns": "^4.1.0",
     "fathom-client": "^3.7.2",
@@ -73,6 +72,7 @@
     "@ianvs/prettier-plugin-sort-imports": "^4.4.1",
     "@next/eslint-plugin-next": "^15.2.1",
     "@playwright/test": "^1.51.0",
+    "@tailwindcss/postcss": "^4.0.13",
     "@types/eslint": "^9.6.1",
     "@types/node": "^22.13.9",
     "@types/pluralize": "^0.0.33",
@@ -95,7 +95,7 @@
     "prettier": "^3.5.3",
     "prettier-plugin-tailwindcss": "^0.6.11",
     "schema-dts": "^1.1.5",
-    "tailwindcss": "^3.4.17",
+    "tailwindcss": "^4.0.13",
     "typescript": "5.8.2",
     "typescript-eslint": "^8.26.0"
   },