Fix errors thrown by detecting content files with oxide (#945)

* Fix errors thrown by detecting content files with oxide (#942)

* Add test

* Cleanup code

* Update version

* Manually connect index.css to theme.css and utilities.css

* Move comment

---------

Co-authored-by: Jordan Pittman <jordan@cryptica.me>

Author: hampustagerud

package-lock.json

@@ -39,6 +39,7 @@
     "@tailwindcss/forms": "0.5.3",
     "@tailwindcss/language-service": "*",
     "@tailwindcss/line-clamp": "0.4.2",
+    "@tailwindcss/oxide": "^4.0.0-alpha.11",
     "@tailwindcss/typography": "0.5.7",
     "@types/color-name": "^1.1.3",
     "@types/culori": "^2.1.0",

packages/tailwindcss-language-server/package.json

@@ -29,6 +29,16 @@ function testFixture(fixture: string, details: any[]) {
       let configPath = path.relative(fixturePath, project.config.path)
 
       expect(configPath).toEqual(detail?.config)
+
+      if (detail?.content) {
+        let expected = detail?.content.map((path) => path.replace('{URL}', fixturePath))
+
+        let actual = project.documentSelector
+          .filter((selector) => selector.priority === 1 /** content */)
+          .map((selector) => selector.pattern)
+
+        expect(actual).toEqual(expected)
+      }
     }
 
     expect(projects).toHaveLength(details.length)
@@ -84,3 +94,16 @@ testFixture('v4/workspaces', [
   // { config: 'packages/style-export/lib.css' }, // Should this be included?
   { config: 'packages/web/app.css' },
 ])
+
+testFixture('v4/auto-content', [
+  //
+  {
+    config: 'src/app.css',
+    content: [
+      '{URL}/package.json',
+      '{URL}/src/index.html',
+      '{URL}/src/components/example.html',
+      '{URL}/src/**/*.{py,tpl,js,vue,php,mjs,cts,jsx,tsx,rhtml,slim,handlebars,twig,rs,njk,svelte,liquid,pug,md,ts,heex,mts,astro,nunjucks,rb,eex,haml,cjs,html,hbs,jade,aspx,razor,erb,mustache,mdx}',
+    ],
+  },
+])

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

@@ -303,6 +303,10 @@ export class ProjectLocator {
     // Create a graph of all the CSS files that might (indirectly) use Tailwind
     let graph = new Graph<FileEntry>()
 
+    let indexPath: string | null = null
+    let themePath: string | null = null
+    let utilitiesPath: string | null = null
+
     for (let file of imports) {
       graph.add(file.path, file)
 
@@ -314,8 +318,28 @@ export class ProjectLocator {
 
         graph.connect(file.path, importedPath)
       }
+
+      // Collect the index, theme, and utilities files for manual connection
+      if (file.path.includes('node_modules/tailwindcss/index.css')) {
+        indexPath = file.path
+      } else if (file.path.includes('node_modules/tailwindcss/theme.css')) {
+        themePath = file.path
+      } else if (file.path.includes('node_modules/tailwindcss/utilities.css')) {
+        utilitiesPath = file.path
+      }
     }
 
+    // We flatten the index file on publish so there are no imports that
+    // need to be resolved. But this messes with our graph traversal, so
+    // we need to manually connect the index file to the theme and utilities
+    // files so we do not get extra roots in the graph.
+    // - node_modules/tailwindcss/index.css
+    // -> node_modules/tailwindcss/theme.css
+    // -> node_modules/tailwindcss/utilities.css
+
+    if (indexPath && themePath) graph.connect(indexPath, themePath)
+    if (indexPath && utilitiesPath) graph.connect(indexPath, utilitiesPath)
+
     for (let root of graph.roots()) {
       let config: ConfigEntry = configs.remember(root.path, () => ({
         source: 'css',
@@ -438,9 +462,9 @@ async function* contentSelectorsFromCssConfig(entry: ConfigEntry): AsyncIterable
       }
     } else if (item.kind === 'auto' && !auto) {
       auto = true
-      for await (let file of detectContentFiles(entry.packageRoot)) {
+      for await (let pattern of detectContentFiles(entry.packageRoot)) {
         yield {
-          pattern: normalizePath(file),
+          pattern,
           priority: DocumentSelectorPriority.CONTENT_FILE,
         }
       }
@@ -453,16 +477,21 @@ async function* detectContentFiles(base: string): AsyncIterable<string> {
     let oxidePath = resolveFrom(path.dirname(base), '@tailwindcss/oxide')
     oxidePath = pathToFileURL(oxidePath).href
 
+    const oxide: typeof import('@tailwindcss/oxide') = await import(oxidePath)
+
     // This isn't a v4 project
-    const oxide = await import(oxidePath)
-    if (!oxide.scanDir) {
-      return
-    }
+    if (!oxide.scanDir) return
 
-    let { files, globs } = await oxide.scanDir({ base, globs: true })
+    let { files, globs } = oxide.scanDir({ base, globs: true })
 
-    yield* files
-    yield* globs
+    for (let file of files) {
+      yield normalizePath(file)
+    }
+
+    for (let { base, glob } of globs) {
+      // Do not normalize the glob itself as it may contain escape sequences
+      yield normalizePath(base) + '/' + glob
+    }
   } catch {
     //
   }

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

@@ -310,8 +310,8 @@ withFixture('v4/basic', (c) => {
     let result = await completion({ lang, text, position, settings })
     let textEdit = expect.objectContaining({ range: { start: position, end: position } })
 
-    expect(result.items.length).toBe(12106)
-    expect(result.items.filter((item) => item.label.endsWith(':')).length).toBe(215)
+    expect(result.items.length).toBe(12312)
+    expect(result.items.filter((item) => item.label.endsWith(':')).length).toBe(216)
     expect(result).toEqual({
       isIncomplete: false,
       items: expect.arrayContaining([
@@ -522,11 +522,12 @@ withFixture('v4/basic', (c) => {
 
     expect(resolved).toEqual({
       ...item,
-      detail: 'font-size: 0.875rem /* 8.75px */; line-height: 1.25rem /* 12.5px */;',
+      detail:
+        'font-size: var(--font-size-sm, 0.875rem /* 8.75px */); line-height: var(--font-size-sm--line-height, 1.25rem /* 12.5px */);',
       documentation: {
         kind: 'markdown',
         value:
-          '```css\n.text-sm {\n  font-size: 0.875rem /* 8.75px */;\n  line-height: 1.25rem /* 12.5px */;\n}\n```',
+          '```css\n.text-sm {\n  font-size: var(--font-size-sm, 0.875rem /* 8.75px */);\n  line-height: var(--font-size-sm--line-height, 1.25rem /* 12.5px */);\n}\n```',
       },
     })
   })
@@ -548,7 +549,7 @@ withFixture('v4/basic', (c) => {
 
     expect(resolved).toEqual({
       ...item,
-      detail: 'background-color: #ef4444;',
+      detail: 'background-color: var(--color-red-500, #ef4444);',
       documentation: '#ef4444',
     })
   })
@@ -577,19 +578,19 @@ withFixture('v4/workspaces', (c) => {
 
     expect(resolved[0]).toEqual({
       ...items[0],
-      detail: 'background-color: #8e3b46;',
+      detail: 'background-color: var(--color-beet, #8e3b46);',
       documentation: '#8e3b46',
     })
 
     expect(resolved[1]).toEqual({
       ...items[1],
-      detail: 'background-color: #ff9f00;',
+      detail: 'background-color: var(--color-orangepeel, #ff9f00);',
       documentation: '#ff9f00',
     })
 
     expect(resolved[2]).toEqual({
       ...items[2],
-      detail: 'background-color: #8e3b46;',
+      detail: 'background-color: var(--color-style-main, #8e3b46);',
       documentation: '#8e3b46',
     })
   })