From 09da8053ba94409ecd5dc313bb7dfcb9e8b9ad81 Mon Sep 17 00:00:00 2001
From: Harlan Wilton <harlan@harlanzw.com>
Date: Fri, 27 Oct 2023 13:40:28 +0900
Subject: [PATCH] fix(useScript): support SSR idle trigger

---
 packages/unhead/src/composables/useScript.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/unhead/src/composables/useScript.ts b/packages/unhead/src/composables/useScript.ts
index fcbd337f..db86fa64 100644
--- a/packages/unhead/src/composables/useScript.ts
+++ b/packages/unhead/src/composables/useScript.ts
@@ -107,7 +107,14 @@ export function useScript<T>(input: UseScriptInput, _options?: UseScriptOptions<
   let trigger = options.trigger
   if (trigger) {
     const isIdle = trigger === 'idle'
-    isIdle && (trigger = new Promise<void>(resolve => requestIdleCallback(() => resolve())))
+    if (isIdle) {
+      // we don't need idle trigger for server
+      if (head.ssr) {
+        trigger = 'manual'
+      } else
+        // won't work in a SSR environment
+        trigger = new Promise<void>(resolve => requestIdleCallback(() => resolve()))
+    }
     // never resolves
     trigger === 'manual' && (trigger = new Promise(() => {}))
     // check trigger is a promise