Show source diagnostics when imports contain a layer (#1204)

Fixes #1099

Author: thecrypticace

packages/tailwindcss-language-service/src/completions/file-paths.ts

@@ -7,7 +7,7 @@ const PATTERN_CUSTOM_V3 = /@(?<directive>config)\s*(?<partial>'[^']*|"[^"]*)$/
 // @import … source('…')
 // @tailwind utilities source('…')
 const PATTERN_IMPORT_SOURCE =
-  /@(?<directive>(?:import|reference))\s*(?<path>'[^']*'|"[^"]*")\s*source\((?<partial>'[^']*|"[^"]*)$/
+  /@(?<directive>(?:import|reference))\s*(?<path>'[^']*'|"[^"]*")\s*(layer\([^)]+\)\s*)?source\((?<partial>'[^']*|"[^"]*)$/
 const PATTERN_UTIL_SOURCE =
   /@(?<directive>tailwind)\s+utilities\s+source\((?<partial>'[^']*|"[^"]*)?$/
 

packages/tailwindcss-language-service/src/diagnostics/getInvalidSourceDiagnostics.ts

@@ -8,7 +8,7 @@ import { absoluteRange } from '../util/absoluteRange'
 // @import … source('…')
 // @tailwind utilities source('…')
 const PATTERN_IMPORT_SOURCE =
-  /(?:\s|^)@(?<directive>(?:import|reference))\s*(?<path>'[^']*'|"[^"]*")\s*source\((?<source>'[^']*'?|"[^"]*"?|[a-z]*|\)|;)/dg
+  /(?:\s|^)@(?<directive>(?:import|reference))\s*(?<path>'[^']*'|"[^"]*")\s*(layer\([^)]+\)\s*)?source\((?<source>'[^']*'?|"[^"]*"?|[a-z]*|\)|;)/dg
 const PATTERN_UTIL_SOURCE =
   /(?:\s|^)@(?<directive>tailwind)\s+(?<layer>\S+)\s+source\((?<source>'[^']*'?|"[^"]*"?|[a-z]*|\)|;)/dg
 

packages/tailwindcss-language-service/src/documentLinksProvider.ts

@@ -19,7 +19,7 @@ export function getDocumentLinks(
     patterns.push(
       /@plugin\s*(?<path>'[^']+'|"[^"]+")/g,
       /@source\s*(?<path>'[^']+'|"[^"]+")/g,
-      /@import\s*('[^']*'|"[^"]*")\s*source\((?<path>'[^']*'?|"[^"]*"?)/g,
+      /@import\s*('[^']*'|"[^"]*")\s*(layer\([^)]+\)\s*)?source\((?<path>'[^']*'?|"[^"]*"?)/g,
       /@reference\s*('[^']*'|"[^"]*")\s*source\((?<path>'[^']*'?|"[^"]*"?)/g,
       /@tailwind\s*utilities\s*source\((?<path>'[^']*'?|"[^"]*"?)/g,
     )

packages/vscode-tailwindcss/CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - Show light color swatch from light-dark() functions ([#1199](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1199))
 - Ignore comments when matching class attributes ([#1202](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1202))
+- Show source diagnostics when imports contain a layer ([#1204](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1204))
 
 ## 0.14.4