fix(linter): exclude svelte files from no_unused_vars rule (#8170)

apps/oxlint/src/lint.rs

@@ -628,7 +628,7 @@ mod test {
         let args = &["fixtures/svelte/debugger.svelte"];
         let result = test(args);
         assert_eq!(result.number_of_files, 1);
-        assert_eq!(result.number_of_warnings, 2);
+        assert_eq!(result.number_of_warnings, 1);
         assert_eq!(result.number_of_errors, 0);
     }
 

crates/oxc_linter/src/rules/eslint/no_unused_vars/mod.rs

@@ -214,12 +214,12 @@ impl Rule for NoUnusedVars {
     }
 
     fn should_run(&self, ctx: &ContextHost) -> bool {
-        // ignore .d.ts and vue files.
+        // ignore .d.ts and vue/svelte files.
         // 1. declarations have side effects (they get merged together)
-        // 2. vue scripts declare variables that get used in the template, which
+        // 2. vue/svelte scripts declare variables that get used in the template, which
         //    we can't detect
         !ctx.source_type().is_typescript_definition()
-            && !ctx.file_path().extension().is_some_and(|ext| ext == "vue")
+            && !ctx.file_path().extension().is_some_and(|ext| ext == "vue" || ext == "svelte")
     }
 }