Method child

packages/svelte/src/internal/server/renderer.js:201–231

* Create a child renderer. The child renderer inherits the state from the parent, * but has its own content. * @param {(renderer: Renderer) => MaybePromise<void>} fn

(fn)

	 * @param {(renderer: Renderer) => MaybePromise<void>} fn
	 */
	child(fn) {
		const child = new Renderer(this.global, this);
		this.#out.push(child);

		const parent = ssr_context;

		set_ssr_context({
			...ssr_context,
			p: parent,
			c: null,
			r: child
		});

		const result = fn(child);

		set_ssr_context(parent);

		if (result instanceof Promise) {
			// catch to avoid unhandled promise rejections - we'll end up throwing in `collect_async` if something fails
			result.catch(noop);
			result.finally(() => set_ssr_context(null)).catch(noop);

			if (child.global.mode === 'sync') {
				e.await_invalid();
			}

			child.promise = result;
		}

		return child;
	}

	/**
	 * Render children inside an error boundary. If the children throw and the API-level