function wrapper(anchor, props) {
		let instance = {};

		/** @type {Effect} */
		let effect;

		let ran = false;

		block(() => {
			const source = get_source();
			const component = get(source);

			if (effect) {
				// @ts-ignore
				for (var k in instance) delete instance[k];
				destroy_effect(effect);
			}

			effect = branch(() => {
				// when the component is invalidated, replace it without transitions
				if (ran) set_should_intro(false);

				// preserve getters/setters
				Object.defineProperties(
					instance,
					Object.getOwnPropertyDescriptors(
						// @ts-expect-error
						new.target ? new component(anchor, props) : component(anchor, props)
					)
				);

				if (ran) set_should_intro(true);
			});
		}, EFFECT_TRANSPARENT);

		ran = true;

		if (hydrating) {
			anchor = hydrate_node;
		}

		return instance;
	}
@param {TemplateNode} anchor
@param {any} props