From adfd6f0164c4d07353a8a79c78b1907791d9b211 Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Thu, 21 Mar 2024 16:43:15 -0400
Subject: [PATCH] optimise

---
 .../internal/client/dom/elements/transitions.js    | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/packages/svelte/src/internal/client/dom/elements/transitions.js b/packages/svelte/src/internal/client/dom/elements/transitions.js
index 742887aed1..0b644ea7aa 100644
--- a/packages/svelte/src/internal/client/dom/elements/transitions.js
+++ b/packages/svelte/src/internal/client/dom/elements/transitions.js
@@ -97,10 +97,16 @@ export function animation(element, get_fn, get_params) {
 
 			animation?.abort();
 
-			// TODO bail if `from` and `to` match
-			animation = animate(this.element, options, undefined, 1, () => {
-				animation = undefined;
-			});
+			if (
+				from.left !== to.left ||
+				from.right !== to.right ||
+				from.top !== to.top ||
+				from.bottom !== to.bottom
+			) {
+				animation = animate(this.element, options, undefined, 1, () => {
+					animation = undefined;
+				});
+			}
 		}
 	};