From 97d20c40aa933769bf6803cf0efc9725338a01a7 Mon Sep 17 00:00:00 2001
From: si3nloong <sianloong90@gmail.com>
Date: Tue, 8 Feb 2022 23:32:41 +0800
Subject: [PATCH 1/2] [fix] object destructuring bug using `@const`

---
 src/preprocess.js                    |  2 +-
 test/samples/const-tag/Input.svelte  |  8 ++++++++
 test/samples/const-tag/expected.json | 11 +++++++++--
 3 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/src/preprocess.js b/src/preprocess.js
index 0be4795..b03f7a5 100644
--- a/src/preprocess.js
+++ b/src/preprocess.js
@@ -173,7 +173,7 @@ export const preprocess = text => {
 					node.attributes.forEach(node => node.type === 'Let' && find_contextual_names(compiler, node.expression || node.name));
 				}
 				if (Array.isArray(node.children)) {
-					node.children.forEach(node => node.type === 'ConstTag' && find_contextual_names(compiler, node.expression.left.name));
+					node.children.forEach(node => node.type === 'ConstTag' && find_contextual_names(compiler, node.expression.left.name || node.expression.left));
 				}
 				if (contextual_names.length) {
 					nodes_with_contextual_scope.add(node);
diff --git a/test/samples/const-tag/Input.svelte b/test/samples/const-tag/Input.svelte
index 8255686..cb86567 100644
--- a/test/samples/const-tag/Input.svelte
+++ b/test/samples/const-tag/Input.svelte
@@ -1,6 +1,7 @@
 <script>
 	export let boxes;
 	let p;
+	let dimensions = [{ width: 100, height: 20 }];
 </script>
 
 {#each boxes as box}
@@ -10,6 +11,13 @@
 
 {area} <!-- undef -->
 
+{#each dimensions as dimension}
+	{@const { width, height } = dimension}
+	{width}
+	{height}
+	{unknown}
+{/each}
+
 {#await p}
 	wait
 {:then}
diff --git a/test/samples/const-tag/expected.json b/test/samples/const-tag/expected.json
index 7bd208f..9599289 100644
--- a/test/samples/const-tag/expected.json
+++ b/test/samples/const-tag/expected.json
@@ -1,9 +1,16 @@
 [
 	{
 		"ruleId": "no-undef",
-		"line": 11,
+		"line": 12,
 		"column": 2,
-		"endLine": 11,
+		"endLine": 12,
 		"endColumn": 6
+	},
+	{
+		"ruleId": "no-undef",
+		"line": 18,
+		"column": 3,
+		"endLine": 18,
+		"endColumn": 10
 	}
 ]

From 023e361dba5ea554288721738373049fc6e8c275 Mon Sep 17 00:00:00 2001
From: si3nloong <sianloong90@gmail.com>
Date: Tue, 8 Feb 2022 23:35:14 +0800
Subject: [PATCH 2/2] [chore] add comment

---
 test/samples/const-tag/Input.svelte | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/samples/const-tag/Input.svelte b/test/samples/const-tag/Input.svelte
index cb86567..9ed2806 100644
--- a/test/samples/const-tag/Input.svelte
+++ b/test/samples/const-tag/Input.svelte
@@ -15,7 +15,7 @@
 	{@const { width, height } = dimension}
 	{width}
 	{height}
-	{unknown}
+	{unknown} <!-- undef -->
 {/each}
 
 {#await p}