Function effect_root

packages/svelte/src/internal/client/reactivity/effects.js:263–270

(fn)

 * @returns {() => void}
 */
export function effect_root(fn) {
	Batch.ensure();
	const effect = create_effect(ROOT_EFFECT | EFFECT_PRESERVED, fn);

	return () => {
		destroy_effect(effect);
	};
}

/**
 * An effect root whose children can transition out