Can't serialize circular values

[Rich-Harris]

REPL. This (admittedly somewhat rare) case fails in SSR, because it tries to do JSON.stringify(circular):

<script>
	let circular = {};
	circular.self = circular;
</script>

<select bind:value={circular}>
	<option value={circular}>wheeee</option>
</select>

/* App.svelte generated by Svelte v3.0.0-beta.8 */
import { create_ssr_component, escape } from "svelte/internal";

const App = create_ssr_component(($$result, $$props, $$bindings, $$slots) => {
	let circular = {};
	circular.self = circular;

	return `<select ${(v => v ? ("value" + (v === true ? "" : "=" + JSON.stringify(v))) : "")(circular)}>
		<option${(v => v == null ? "" : ` value="${escape(circular)}"`)(circular)}>wheeee</option>
	</select>`;
});

export default App;