Fix incorrect scope analysis of destructured reactive variables (#173)

Author: ota-meshi

src/parser/analyze-scope.ts

@@ -36,7 +36,7 @@ export function analyzeScope(
 /** Analyze reactive scope */
 export function analyzeReactiveScope(scopeManager: ScopeManager): void {
     for (const reference of [...scopeManager.globalScope.through]) {
-        const parent = getParent(reference.identifier)
+        const parent = reference.writeExpr && getParent(reference.writeExpr)
         if (parent?.type === "AssignmentExpression") {
             const pp = getParent(parent)
             if (pp?.type === "ExpressionStatement") {

tests/fixtures/parser/ast/reactive-declarations-with-destructure01-input.svelte

@@ -0,0 +1,7 @@
+<script>
+const bar = { foo : "foo" };
+
+$: ({ foo } = bar);
+</script>
+
+{foo}