svelte/test/runtime/samples/reactive-value-coerce/_config.js

export default {
	html: `1-1`,

	test: ({ assert, component, target }) => {
		component.a.b[0] = 2;
		component.a = component.a; // eslint-disable-line no-self-assign

		assert.htmlEqual(target.innerHTML, `2-2`);
	}
};