fix(isolated-declarations): false positives for non-exported binding …

…elements

crates/oxc_isolated_declarations/src/declaration.rs

@@ -7,7 +7,9 @@ use oxc_span::{GetSpan, SPAN};
 use oxc_syntax::scope::ScopeFlags;
 
 use crate::{
-    diagnostics::{inferred_type_of_expression, signature_computed_property_name},
+    diagnostics::{
+        binding_element_export, inferred_type_of_expression, signature_computed_property_name,
+    },
     IsolatedDeclarations,
 };
 
@@ -46,21 +48,21 @@ impl<'a> IsolatedDeclarations<'a> {
         decl: &VariableDeclarator<'a>,
         check_binding: bool,
     ) -> Option<VariableDeclarator<'a>> {
-        if decl.id.kind.is_destructuring_pattern() {
-            self.error(OxcDiagnostic::error(
-                "Binding elements can't be exported directly with --isolatedDeclarations.",
-            ));
-            return None;
-        }
-
         if check_binding {
             if let Some(name) = decl.id.get_identifier() {
                 if !self.scope.has_reference(name) {
                     return None;
                 }
+            } else {
+                return None;
             }
         }
 
+        if decl.id.kind.is_destructuring_pattern() {
+            self.error(binding_element_export(decl.id.kind.span()));
+            return None;
+        }
+
         let mut binding_type = None;
         let mut init = None;
         if decl.id.type_annotation.is_none() {

crates/oxc_isolated_declarations/src/diagnostics.rs

@@ -95,3 +95,8 @@ pub fn implicitly_adding_undefined_to_type(span: Span) -> OxcDiagnostic {
     )
     .with_label(span)
 }
+
+pub fn binding_element_export(span: Span) -> OxcDiagnostic {
+    OxcDiagnostic::error("Binding elements can't be exported directly with --isolatedDeclarations.")
+        .with_label(span)
+}