reverted function declaration after review (#8166)

packages/astro/components/ViewTransitions.astro

@@ -20,6 +20,12 @@ const { fallback = 'animate' } = Astro.props as Props;
 	type Events = 'astro:load' | 'astro:beforeload';
 
 	const persistState = (state: State) => history.replaceState(state, '');
+	const supportsViewTransitions = !!document.startViewTransition;
+	const transitionEnabledOnThisPage = () =>
+		!!document.querySelector('[name="astro-view-transitions-enabled"]');
+	const triggerEvent = (name: Events) => document.dispatchEvent(new Event(name));
+	const onload = () => triggerEvent('astro:load');
+	const PERSIST_ATTR = 'data-astro-transition-persist';
 
 	// The History API does not tell you if navigation is forward or back, so
 	// you can figure it using an index. On pushState the index is incremented so you
@@ -29,14 +35,6 @@ const { fallback = 'animate' } = Astro.props as Props;
 		persistState({ index: currentHistoryIndex, scrollY: 0 });
 	}
 
-	const supportsViewTransitions = !!document.startViewTransition;
-	function transitionEnabledOnThisPage() {
-		return !!document.querySelector('[name="astro-view-transitions-enabled"]');
-	}
-	const triggerEvent = (name: Events) => document.dispatchEvent(new Event(name));
-	const onload = () => triggerEvent('astro:load');
-	const PERSIST_ATTR = 'data-astro-transition-persist';
-
 	const throttle = (cb: (...args: any[]) => any, delay: number) => {
 		let wait = false;
 		// During the waiting time additional events are lost.