Fixed type inference on the ESLintCompatiblePostCSSNode type

Author: marekdedic

src/ast/style.ts

@@ -3,18 +3,14 @@ import type { BaseNode } from "./base";
 
 export type ESLintCompatiblePostCSSNode<PostCSSNode extends Node = Node> =
   BaseNode &
+    Omit<PostCSSNode, "walk"> &
     (PostCSSNode extends Container<infer Child>
-      ? Omit<PostCSSNode, "parent" | "type"> &
-          Omit<
-            Container<ESLintCompatiblePostCSSNode<Child>>,
-            "parent" | "walk"
-          > & {
-            parent: BaseNode;
-            walk(
-              callback: (
-                node: ESLintCompatiblePostCSSNode<Child>,
-                index: number
-              ) => false | void
-            ): false | undefined;
-          }
-      : PostCSSNode);
+      ? {
+          walk(
+            callback: (
+              node: ESLintCompatiblePostCSSNode<Child>,
+              index: number
+            ) => false | void
+          ): false | undefined;
+        }
+      : unknown);

src/parser/converts/root.ts

@@ -11,7 +11,7 @@ import type { Context } from "../../context";
 import { convertChildren, extractElementTags } from "./element";
 import { convertAttributeTokens } from "./attr";
 import type { Scope } from "eslint-scope";
-import type { ChildNode, Node, Parser, Root } from "postcss";
+import type { Document, Node, Parser, Root } from "postcss";
 import postcss from "postcss";
 import { parse as SCSSparse } from "postcss-scss";
 import type { ESLintCompatiblePostCSSNode } from "../../ast/style";
@@ -154,10 +154,10 @@ export function convertSvelteRoot(
         style.body.loc.start.column += style.startTag.loc.end.column;
         style.body.loc.end.column -=
           style.endTag.loc.end.column - style.endTag.loc.start.column;
-        style.body?.walk((node: ESLintCompatiblePostCSSNode<ChildNode>) =>
+        style.body?.walk((node) =>
           convertPostCSSNodeToESLintNode(node, style.loc, contentRange)
         );
-        style.body.parent = style;
+        style.body.parent = style as unknown as Document;
         delete style.body.source?.input.file;
       }
       ctx.addToken("HTMLText", contentRange);