From 4fe04705e5864e7741c5b53e2889f1c90aaa2927 Mon Sep 17 00:00:00 2001
From: "Lyu, Wei Da" <b00605009@ntu.edu.tw>
Date: Sat, 27 Aug 2022 11:29:49 +0800
Subject: [PATCH] (fix) extract name in destructuring with default

---
 packages/svelte2tsx/src/svelte2tsx/utils/tsAst.ts               | 2 ++
 .../samples/reactive-declare-destructuring/expected.tsx         | 1 +
 .../samples/reactive-declare-destructuring/expectedv2.ts        | 1 +
 .../samples/reactive-declare-destructuring/input.svelte         | 1 +
 4 files changed, 5 insertions(+)

diff --git a/packages/svelte2tsx/src/svelte2tsx/utils/tsAst.ts b/packages/svelte2tsx/src/svelte2tsx/utils/tsAst.ts
index 3cddb0494..f58893dd6 100644
--- a/packages/svelte2tsx/src/svelte2tsx/utils/tsAst.ts
+++ b/packages/svelte2tsx/src/svelte2tsx/utils/tsAst.ts
@@ -100,6 +100,8 @@ export function extractIdentifiers(
                 extractIdentifiers(element, identifiers);
             }
         });
+    } else if (ts.isBinaryExpression(node)) {
+        extractIdentifiers(node.left, identifiers);
     }
 
     return identifiers;
diff --git a/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/expected.tsx b/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/expected.tsx
index 00b63b1e7..602a3c799 100644
--- a/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/expected.tsx
+++ b/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/expected.tsx
@@ -6,6 +6,7 @@ let  { b: d } = __sveltets_1_invalidate(() => ({ b: '' }));
 let  { c: { length } } = __sveltets_1_invalidate(() => ({ c: '' }));
 let  { ...e } = __sveltets_1_invalidate(() => ({ f: ''}));
 let  { f } = __sveltets_1_invalidate(() => ({ f: ''}));
+let  { b: g = 1} = __sveltets_1_invalidate(() => ({ b: 1 }));
 ;
 () => (<></>);
 return { props: {}, slots: {}, getters: {}, events: {} }}
diff --git a/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/expectedv2.ts b/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/expectedv2.ts
index a17d7d467..ecad409cb 100644
--- a/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/expectedv2.ts
+++ b/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/expectedv2.ts
@@ -6,6 +6,7 @@ let  { b: d } = __sveltets_1_invalidate(() => ({ b: '' }));
 let  { c: { length } } = __sveltets_1_invalidate(() => ({ c: '' }));
 let  { ...e } = __sveltets_1_invalidate(() => ({ f: ''}));
 let  { f } = __sveltets_1_invalidate(() => ({ f: ''}));
+let  { b: g = 1} = __sveltets_1_invalidate(() => ({ b: 1 }));
 ;
 async () => {};
 return { props: {}, slots: {}, getters: {}, events: {} }}
diff --git a/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/input.svelte b/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/input.svelte
index 14e4ee604..d42a5693e 100644
--- a/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/input.svelte
+++ b/packages/svelte2tsx/test/svelte2tsx/samples/reactive-declare-destructuring/input.svelte
@@ -4,4 +4,5 @@ $: ({ b: d } = { b: '' });
 $: ({ c: { length } } = { c: '' });
 $: ({ ...e } = { f: ''});
 $: ( { f } = { f: ''} );
+$: ({ b: g = 1} = { b: 1 });
 </script>