get rid of css parser

package.json

@@ -2,7 +2,7 @@
   "name": "vscode-html-css",
   "displayName": "HTML CSS Support",
   "description": "CSS Intellisense for HTML",
-  "version": "1.14.1",
+  "version": "1.14.2",
   "license": "MIT",
   "publisher": "ecmel",
   "author": {
@@ -103,7 +103,6 @@
     "@vscode/test-electron": "^2.3.8",
     "@vscode/vsce": "^2.22.0",
     "c8": "^8.0.1",
-    "css-tree": "^2.3.1",
     "fast-glob": "^3.3.2",
     "mocha": "^10.2.0",
     "prettier": "^3.1.1",

src/completion.ts

@@ -3,7 +3,6 @@
  * Licensed under the MIT License
  */
 
-import { parse, walk } from "css-tree";
 import { glob } from "fast-glob";
 import { basename, dirname, extname, isAbsolute, join } from "path";
 import {
@@ -80,24 +79,18 @@ export class SelectorCompletionItemProvider
   }
 
   parseTextToItems(path: string, text: string, items: CompletionItem[]) {
-    walk(parse(text), (node) => {
-      let kind: CompletionItemKind;
-
-      switch (node.type) {
-        case "ClassSelector":
-          kind = CompletionItemKind.Enum;
-          break;
-        case "IdSelector":
-          kind = CompletionItemKind.Value;
-          break;
-        default:
-          return;
-      }
+    const regex = /([.#])(-?[_a-zA-Z]+[_a-zA-Z0-9-]*)\s*{([^}]*)}/g;
+
+    let match;
 
+    while ((match = regex.exec(text))) {
       items.push(
-        new CompletionItem({ label: node.name, description: path }, kind),
+        new CompletionItem(
+          { label: match[2], description: path },
+          match[1] === "." ? CompletionItemKind.Enum : CompletionItemKind.Value,
+        ),
       );
-    });
+    }
   }
 
   async fetchLocal(path: string): Promise<void> {