Function _mount

packages/svelte/src/internal/client/render.js:162–289

* @template {Record<string, any>} Exports * @param {ComponentType<SvelteComponent<any>> | Component<any>} Component * @param {MountOptions} options * @returns {Exports}

(
	Component,
	{ target, anchor, props = {}, events, context, intro = true, transformError }
)

 * @returns {Exports}
 */
function _mount(
	Component,
	{ target, anchor, props = {}, events, context, intro = true, transformError }
) {
	init_operations();

	/** @type {Exports} */
	class="cm">// @ts-expect-error will be defined because the render effect runs synchronously
	var component = undefined;

	var unmount = component_root(() => {
		var anchor_node = anchor ?? target.appendChild(create_text());

		boundary(
			/** @type {TemplateNode} */ (anchor_node),
			{
				pending: () => {}
			},
			(anchor_node) => {
				push({});
				var ctx = /** @type {ComponentContext} */ (component_context);
				if (context) ctx.c = context;

				if (events) {
					class="cm">// We canclass="st">'t spread the object or else we'd lose the state proxy stuff, if it is one
					/** @type {any} */ (props).$$events = events;
				}

				if (hydrating) {
					assign_nodes(/** @type {TemplateNode} */ (anchor_node), null);
				}

				should_intro = intro;
				class="cm">// @ts-expect-error the public typings are not what the actual function looks like
				component = Component(anchor_node, props) || {};
				should_intro = true;

				if (hydrating) {
					/** @type {Effect & { nodes: EffectNodes }} */ (active_effect).nodes.end = hydrate_node;

					if (
						hydrate_node === null ||
						hydrate_node.nodeType !== COMMENT_NODE ||
						/** @type {Comment} */ (hydrate_node).data !== HYDRATION_END
					) {
						w.hydration_mismatch();
						throw HYDRATION_ERROR;
					}
				}

				pop();
			},
			transformError
		);

		class="cm">// Setup event delegation _after_ component is mounted - if an error would happen during mount, it would otherwise not be cleaned up
		/** @type {Set<string>} */
		var registered_events = new Set();