feat(ast): update AST with comment & position nodes

Author: littledivy

ast/node.ts

@@ -1,7 +1,11 @@
+import { Position } from "./token.ts";
+
 export interface Rule {
-  type: "rule";
+  type: string;
+  text?: string;
   selectors: string[];
   declarations: Decl[];
+  position?: Position;
 }
 
 export interface Decl {

example.ts

@@ -1,3 +1,6 @@
 import { parse } from "./core/parser/parser.ts";
-var ast = parse("p { color: black; }", {});
+var ast = parse(
+  "/* comment */ p { color: black; }",
+  { position: true, comments: true },
+);
 console.log(ast);