feat: migrate to the new system.

.gitignore

@@ -1,11 +1,10 @@
 # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
-.env
 
 # dependencies
 /node_modules
-/.yarn
 /.pnp
 .pnp.js
+.yarn/install-state.gz
 
 # testing
 /coverage
@@ -27,10 +26,11 @@ yarn-debug.log*
 yarn-error.log*
 
 # local env files
-.env.local
-.env.development.local
-.env.test.local
-.env.production.local
+.env*.local
 
 # vercel
 .vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts