在 load 函数内调用 fetch(url) 会将 url 注册为依赖。有时使用 fetch 并不合适，在这种情况下，你可以使用 depends(url) 函数手动指定依赖。

¥Calling fetch(url) inside a load function registers url as a dependency. Sometimes it’s not appropriate to use fetch, in which case you can specify a dependency manually with the depends(url) function.

由于任何以 [a-z]+: 模式开头的字符串都是有效的 URL，我们可以创建自定义无效键，如 data:now。

¥Since any string that begins with an [a-z]+: pattern is a valid URL, we can create custom invalidation keys like data:now.

更新 src/routes/+layout.js 以直接返回值而不是进行 fetch 调用，并添加 depends：

¥Update src/routes/+layout.js to return a value directly rather than making a fetch call, and add the depends:

export async function load({ depends }) {
	depends('data:now');

	return {
		now: Date.now()
	};
}

现在，更新 src/routes/[...timezone]/+page.svelte 中的 invalidate 调用：

¥Now, update the invalidate call in src/routes/[...timezone]/+page.svelte:

<script>
	import { onMount } from 'svelte';
	import { invalidate } from '$app/navigation';

	let { data } = $props();

	onMount(() => {
		const interval = setInterval(() => {
			invalidate('data:now');
		}, 1000);

		return () => {
			clearInterval(interval);
		};
	});
</script>

<script lang="ts">
	import { onMount } from 'svelte';
	import { invalidate } from '$app/navigation';

	let { data } = $props();

	onMount(() => {
		const interval = setInterval(() => {
			invalidate('data:now');
		}, 1000);

		return () => {
			clearInterval(interval);
		};
	});
</script>