Function unmount

packages/svelte/src/internal/client/render.js:317–334

(component, options)

 * @returns {Promise<void>}
 */
export function unmount(component, options) {
	const fn = mounted_components.get(component);

	if (fn) {
		mounted_components.delete(component);
		return fn(options);
	}

	if (DEV) {
		if (STATE_SYMBOL in component) {
			w.state_proxy_unmount();
		} else {
			w.lifecycle_double_unmount();
		}
	}

	return Promise.resolve();
}