Ignore URL imports when considering roots

Author: thecrypticace

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

@@ -531,6 +531,28 @@ testLocator({
   ],
 })
 
+testLocator({
+  name: 'Stylesheets that only have URL imports are not considered roots',
+  fs: {
+    'a/fonts.css': css`
+      @import 'https://example.com/fonts/some-font.css';
+      .a {
+        color: red;
+      }
+    `,
+    'src/app.css': css`
+      @import 'tailwindcss';
+    `,
+  },
+  expected: [
+    {
+      version: '4.1.1 (bundled)',
+      config: '/src/app.css',
+      content: [],
+    },
+  ],
+})
+
 // ---
 
 function testLocator({

packages/tailwindcss-language-server/src/version-guesser.ts

@@ -49,7 +49,8 @@ const HAS_TAILWIND = /@tailwind\s*[^;]+;/
 const HAS_COMMON_DIRECTIVE = /@(config|apply)\s*[^;{]+[;{]/
 
 // If it's got imports at all it could be either
-const HAS_IMPORT = /@import\s*['"]/
+// Note: We only care about non-url imports
+const HAS_NON_URL_IMPORT = /@import\s*['"](?!([a-z]+:|\/\/))/
 
 /**
  * Determine the likely Tailwind version used by the given file
@@ -128,7 +129,7 @@ export function analyzeStylesheet(content: string): TailwindStylesheet {
   }
 
   // Files that import other files could be either and are potentially roots
-  if (HAS_IMPORT.test(content)) {
+  if (HAS_NON_URL_IMPORT.test(content)) {
     return {
       root: true,
       versions: ['4', '3'],