Add test to find .mts and .cts config files

Author: ErlendS

packages/tailwindcss-language-server/src/project-locator.test.ts

@@ -86,6 +86,16 @@ testFixture('v3/ts-config', [
   { config: 'tailwind.config.ts' },
 ])
 
+testFixture('v3/cts-config', [
+  //
+  { config: 'tailwind.config.cts' },
+])
+
+testFixture('v3/mts-config', [
+  //
+  { config: 'tailwind.config.mts' },
+])
+
 testFixture('v4/basic', [
   //
   { config: 'app.css' },

packages/tailwindcss-language-server/tests/fixtures/v3/cts-config/tailwind.config.cts

@@ -0,0 +1,7 @@
+export default {
+  theme: {
+    colors: { cool: 'blue' },
+  },
+} satisfies {
+  theme: Record<string, any>
+}

packages/tailwindcss-language-server/tests/fixtures/v3/mts-config/tailwind.config.mts

@@ -0,0 +1,7 @@
+export default {
+  theme: {
+    colors: { cool: 'blue' },
+  },
+} satisfies {
+  theme: Record<string, any>
+}