From 1a7753722536f3c1e451d9b19719487e4601ad56 Mon Sep 17 00:00:00 2001
From: Tan Li Hau <lhtan93@gmail.com>
Date: Sat, 2 Jan 2021 01:35:44 +0800
Subject: [PATCH] fix deep object property for action

---
 .../render_dom/wrappers/shared/add_actions.ts        |  3 ++-
 test/runtime/samples/action-object-deep/_config.js   |  8 ++++++++
 test/runtime/samples/action-object-deep/main.svelte  | 12 ++++++++++++
 3 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 test/runtime/samples/action-object-deep/_config.js
 create mode 100644 test/runtime/samples/action-object-deep/main.svelte

diff --git a/src/compiler/compile/render_dom/wrappers/shared/add_actions.ts b/src/compiler/compile/render_dom/wrappers/shared/add_actions.ts
index 6ca7de9a22..85aee6cd36 100644
--- a/src/compiler/compile/render_dom/wrappers/shared/add_actions.ts
+++ b/src/compiler/compile/render_dom/wrappers/shared/add_actions.ts
@@ -31,8 +31,9 @@ export function add_action(block: Block, target: string, action: Action) {
 	const fn = block.renderer.reference(obj);
 
 	if (properties.length) {
+		const member_expression = properties.reduce((lhs, rhs) => x`${lhs}.${rhs}`, fn);
 		block.event_listeners.push(
-			x`@action_destroyer(${id} = ${fn}.${properties.join('.')}(${target}, ${snippet}))`
+			x`@action_destroyer(${id} = ${member_expression}(${target}, ${snippet}))`
 		);
 	} else {
 		block.event_listeners.push(
diff --git a/test/runtime/samples/action-object-deep/_config.js b/test/runtime/samples/action-object-deep/_config.js
new file mode 100644
index 0000000000..7fdc11af2b
--- /dev/null
+++ b/test/runtime/samples/action-object-deep/_config.js
@@ -0,0 +1,8 @@
+export default {
+	html: `
+		<button>action</button>
+	`,
+	async test({ assert, target, window }) {
+		assert.equal(target.querySelector('button').foo, 'bar1337');
+	}
+};
diff --git a/test/runtime/samples/action-object-deep/main.svelte b/test/runtime/samples/action-object-deep/main.svelte
new file mode 100644
index 0000000000..75c35d628d
--- /dev/null
+++ b/test/runtime/samples/action-object-deep/main.svelte
@@ -0,0 +1,12 @@
+<script>
+	const obj = {
+		deep: {
+			foo : 'bar',
+			action(element, { leet }) {
+				element.foo = this.foo + leet;
+			}
+		}
+	};
+</script>
+
+<button use:obj.deep.action={{ leet: 1337 }}>action</button>
\ No newline at end of file