Function onDestroy

packages/svelte/src/index-client.js:115–121

(fn)

 * @returns {void}
 */
export function onDestroy(fn) {
	if (component_context === null) {
		e.lifecycle_outside_component('onDestroy');
	}

	onMount(() => () => untrack(fn));
}

/**
 * @template [T=any]