Method push

packages/svelte/src/internal/server/renderer.js:427–433

* @param {string | (() => Promise<string>)} content

(content)

	 * @param {string | (() => Promise<string>)} content
	 */
	push(content) {
		if (typeof content === 'function') {
			this.child(async (renderer) => renderer.push(await content()));
		} else {
			this.#out.push(content);
		}
	}

	/**
	 * @param {() => void} fn