add options

Author: ota-meshi

README.md

@@ -169,6 +169,24 @@ module.exports = {
 }
 ```
 
+### parserOptions.svelteFeatures
+
+You can use `parserOptions.svelteFeatures` property to specify how to parse related to Svelte features. For example:
+
+```json
+{
+    "parser": "svelte-eslint-parser",
+    "parserOptions": {
+        "svelteFeatures": {
+            /* -- Experimental Svelte Features -- */
+            // Whether to parse the `generics` attribute.
+            // See https://github.com/sveltejs/rfcs/pull/38
+            "experimentalGenerics": false
+        }
+    }
+}
+```
+
 ### Runes support
 
 ***This is an experimental feature. It may be changed or removed in minor versions without notice.***

src/parser/converts/root.ts

@@ -52,7 +52,8 @@ export function convertSvelteRoot(
       ...ctx.getConvertLocation(instance),
     };
     extractAttributes(script, ctx);
-    convertGenericsAttribute(script, ctx);
+    if (ctx.parserOptions.svelteFeatures?.experimentalGenerics)
+      convertGenericsAttribute(script, ctx);
     extractElementTags(script, ctx, {
       buildNameNode: (openTokenRange) => {
         ctx.addToken("HTMLIdentifier", openTokenRange);

src/parser/parser-options.ts

@@ -19,6 +19,12 @@ export type NormalizedParserOptions = {
     experimentalObjectRestSpread?: boolean | undefined;
     [key: string]: any;
   };
+  svelteFeatures?: {
+    /* -- Experimental Svelte Features -- */
+    // Whether to parse the `generics` attribute.
+    // See https://github.com/sveltejs/rfcs/pull/38
+    experimentalGenerics?: boolean;
+  };
   loc: boolean;
   range: boolean;
   raw: boolean;