From 11a79bc4c43d3697dc43e12d569a891bb2512678 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8F=B5=E4=B9=8B?= <chengzhi.zpc@alibaba-inc.com>
Date: Mon, 20 Nov 2023 20:32:52 +0800
Subject: [PATCH] fix: ensure first call

---
 src/overlay.tsx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/overlay.tsx b/src/overlay.tsx
index 614de9b..b34321b 100644
--- a/src/overlay.tsx
+++ b/src/overlay.tsx
@@ -295,9 +295,12 @@ const Overlay = React.forwardRef<HTMLDivElement, OverlayProps>((props, ref) => {
         });
 
         const waitTime = 100;
-        ro.current = new ResizeObserver(throttle(updatePosition, waitTime));
+        const throttledUpdatePosition = throttle(updatePosition, waitTime);
+        ro.current = new ResizeObserver(throttledUpdatePosition);
         ro.current.observe(containerNode);
         ro.current.observe(node);
+        // fist call, 不依赖 ResizeObserver ovserve时的首次执行(测试环境不会执行)，因为 throttle 原因也不会执行两次
+        throttledUpdatePosition();
 
         forceUpdate({});