Advanced loading / invalidateAll • Svelte Tutorial

Finally, there's the nuclear option — invalidateAll(). This will indiscriminately re-run all load functions for the current page, regardless of what they depend on.

Update src/routes/[...timezone]/+page.svelte from the previous exercise:

src/routes/[...timezone]/+page.svelte

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

	export let data;

	onMount(() => {
		const interval = setInterval(() => {
			invalidateAll();
		}, 1000);

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

The depends call in src/routes/+layout.js is no longer necessary:

src/routes/+layout.js

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

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

invalidate(() => true) and invalidateAll are not the same. invalidateAll also re-runs load functions without any url dependencies, which invalidate(() => true) does not.

Next: Environment variables

initialising