feat(selector-parsing): added helper function to convert style selector locations to eslint locations

Author: marekdedic

src/parser/index.ts

@@ -39,6 +39,7 @@ import {
   type StyleContextUnknownLang,
   styleNodeLoc,
   styleNodeRange,
+  styleSelectorNodeLoc,
 } from "./style-context.js";
 import { getGlobalsForSvelte, getGlobalsForSvelteScript } from "./globals.js";
 import type { NormalizedParserOptions } from "./parser-options.js";
@@ -251,6 +252,7 @@ function parseAsSvelte(
     },
     styleNodeLoc,
     styleNodeRange,
+    styleSelectorNodeLoc,
     svelteParseContext,
   });
   resultScript.visitorKeys = Object.assign({}, KEYS, resultScript.visitorKeys);

src/parser/style-context.ts

@@ -141,6 +141,24 @@ export function styleNodeRange(
   ];
 }
 
+/**
+ * Extracts a node location (like that of any ESLint node) from a parsed svelte selector node.
+ */
+export function styleSelectorNodeLoc(
+  node: SelectorNode,
+): Partial<SourceLocation> {
+  return {
+    start:
+      node.source?.start !== undefined
+        ? {
+            line: node.source.start.line,
+            column: node.source.start.column - 1,
+          }
+        : undefined,
+    end: node.source?.end,
+  };
+}
+
 /**
  * Fixes PostCSS AST locations to be relative to the whole file instead of relative to the <style> element.
  */