Don't follow recursive symlinks during project discovery

packages/tailwindcss-language-server/package.json

@@ -67,7 +67,6 @@
     "dset": "3.1.4",
     "enhanced-resolve": "^5.16.1",
     "esbuild": "^0.25.0",
-    "fast-glob": "3.2.4",
     "find-up": "5.0.0",
     "jiti": "^2.3.3",
     "klona": "2.0.4",
@@ -85,6 +84,7 @@
     "stack-trace": "0.0.10",
     "tailwindcss": "3.4.17",
     "tailwindcss-v4": "npm:[email protected]",
+    "tinyglobby": "^0.2.12",
     "tsconfck": "^3.1.4",
     "tsconfig-paths": "^4.2.0",
     "typescript": "5.3.3",

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

@@ -428,6 +428,40 @@ testLocator({
   ],
 })
 
+testLocator({
+  name: 'Recursive symlinks do not cause infinite traversal loops',
+  fs: {
+    'src/a/b/c/index.css': css`
+      @import 'tailwindcss';
+    `,
+    'src/a/b/c/z': symlinkTo('src', 'dir'),
+    'src/a/b/x': symlinkTo('src', 'dir'),
+    'src/a/b/y': symlinkTo('src', 'dir'),
+    'src/a/b/z': symlinkTo('src', 'dir'),
+    'src/a/x': symlinkTo('src', 'dir'),
+
+    'src/b/c/d/z': symlinkTo('src', 'dir'),
+    'src/b/c/d/index.css': css``,
+    'src/b/c/x': symlinkTo('src', 'dir'),
+    'src/b/c/y': symlinkTo('src', 'dir'),
+    'src/b/c/z': symlinkTo('src', 'dir'),
+    'src/b/x': symlinkTo('src', 'dir'),
+
+    'src/c/d/e/z': symlinkTo('src', 'dir'),
+    'src/c/d/x': symlinkTo('src', 'dir'),
+    'src/c/d/y': symlinkTo('src', 'dir'),
+    'src/c/d/z': symlinkTo('src', 'dir'),
+    'src/c/x': symlinkTo('src', 'dir'),
+  },
+  expected: [
+    {
+      version: '4.1.1 (bundled)',
+      config: '/src/a/b/c/index.css',
+      content: [],
+    },
+  ],
+})
+
 // ---
 
 function testLocator({

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

@@ -1,7 +1,6 @@
-import * as os from 'node:os'
 import * as path from 'node:path'
 import * as fs from 'node:fs/promises'
-import glob from 'fast-glob'
+import { glob } from 'tinyglobby'
 import picomatch from 'picomatch'
 import type { Settings } from '@tailwindcss/language-service/src/util/state'
 import { CONFIG_GLOB, CSS_GLOB } from './lib/constants'
@@ -276,14 +275,14 @@ export class ProjectLocator {
 
   private async findConfigs(): Promise<ConfigEntry[]> {
     // Look for config files and CSS files
-    let files = await glob([`**/${CONFIG_GLOB}`, `**/${CSS_GLOB}`], {
+    let files = await glob({
+      patterns: [`**/${CONFIG_GLOB}`, `**/${CSS_GLOB}`],
       cwd: this.base,
       ignore: this.settings.tailwindCSS.files.exclude,
       onlyFiles: true,
       absolute: true,
-      suppressErrors: true,
+      followSymbolicLinks: true,
       dot: true,
-      concurrency: Math.max(os.cpus().length, 1),
     })
 
     let realpaths = await Promise.all(files.map((file) => fs.realpath(file)))

packages/tailwindcss-language-server/tests/prepare.mjs

@@ -2,19 +2,23 @@ import { exec } from 'node:child_process'
 import * as path from 'node:path'
 import { fileURLToPath } from 'node:url'
 import { promisify } from 'node:util'
-import glob from 'fast-glob'
+import { glob } from 'tinyglobby'
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url))
 
-const fixtures = glob.sync(['tests/fixtures/*/package.json', 'tests/fixtures/v4/*/package.json'], {
-  cwd: path.resolve(__dirname, '..'),
+const root = path.resolve(__dirname, '..')
+
+const fixtures = await glob({
+  cwd: root,
+  patterns: ['tests/fixtures/*/package.json', 'tests/fixtures/v4/*/package.json'],
+  absolute: true,
 })
 
 const execAsync = promisify(exec)
 
 await Promise.all(
   fixtures.map(async (fixture) => {
-    console.log(`Installing dependencies for ${fixture}`)
+    console.log(`Installing dependencies for ${path.relative(root, fixture)}`)
 
     await execAsync('npm install', { cwd: path.dirname(fixture) })
   }),

packages/vscode-tailwindcss/CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Prerelease
 
 - Only scan the file system once when needed ([#1287](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1287))
+- Don't follow recursive symlinks when searching for projects ([#1270](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1270))
 
 # 0.14.13