From b360782e3b59bb94fb295a94b8914c0dceb3cfc6 Mon Sep 17 00:00:00 2001
From: Richard Harris <richard.a.harris@gmail.com>
Date: Wed, 26 Jun 2019 22:55:45 -0400
Subject: [PATCH] update slots more conservatively

---
 src/compiler/compile/render_dom/wrappers/Slot.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/compiler/compile/render_dom/wrappers/Slot.ts b/src/compiler/compile/render_dom/wrappers/Slot.ts
index 83d7efa5e9..4dd23277fb 100644
--- a/src/compiler/compile/render_dom/wrappers/Slot.ts
+++ b/src/compiler/compile/render_dom/wrappers/Slot.ts
@@ -160,8 +160,14 @@ export default class SlotWrapper extends Wrapper {
 			`@transition_out(${slot}, #local);`
 		);
 
-		let update_conditions = [...this.dependencies].map(name => `changed.${name}`).join(' || ');
-		if (this.dependencies.size > 1) update_conditions = `(${update_conditions})`;
+		const dynamic_dependencies = Array.from(this.dependencies).filter(name => {
+			if (name === '$$scope') return true;
+			const variable = renderer.component.var_lookup.get(name);
+			return is_dynamic(variable);
+		});
+
+		let update_conditions = dynamic_dependencies.map(name => `changed.${name}`).join(' || ');
+		if (dynamic_dependencies.length > 1) update_conditions = `(${update_conditions})`;
 
 		block.builders.update.add_block(deindent`
 			if (${slot} && ${slot}.p && ${update_conditions}) {