fix: adjust mount and createRoot types

they expect the component constructor, not the instance

.changeset/green-eggs-approve.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: adjust mount and createRoot types

packages/svelte/src/internal/client/render.js

@@ -2915,7 +2915,7 @@ export function unwrap(value) {
  * @template {Record<string, any>} Props
  * @template {Record<string, any> | undefined} Exports
  * @template {Record<string, any>} Events
- * @param {import('../../main/public.js').SvelteComponent<Props, Events>} component
+ * @param {typeof import('../../main/public.js').SvelteComponent<Props, Events>} component
  * @param {{
  * 		target: Node;
  * 		props?: Props;
@@ -3034,7 +3034,7 @@ export function createRoot(component, options) {
  * @template {Record<string, any>} Props
  * @template {Record<string, any> | undefined} Exports
  * @template {Record<string, any>} Events
- * @param {import('../../main/public.js').SvelteComponent<Props, Events>} component
+ * @param {typeof import('../../main/public.js').SvelteComponent<Props, Events>} component
  * @param {{
  * 		target: Node;
  * 		props?: Props;

packages/svelte/tests/types/component.ts

@@ -4,7 +4,8 @@ import {
 	SvelteComponent,
 	type ComponentEvents,
 	type ComponentProps,
-	type ComponentType
+	type ComponentType,
+	mount
 } from 'svelte';
 
 // --------------------------------------------------------------------------- legacy: classes
@@ -103,7 +104,22 @@ const newComponentEvents2: ComponentEvents<NewComponent> = {
 	event: new KeyboardEvent('click')
 };
 
-const instance = createRoot(newComponent, {
+mount(NewComponent, {
+	target: null as any as Document | Element | ShadowRoot | Text | Comment,
+	props: {
+		prop: 'foo',
+		// @ts-expect-error
+		x: ''
+	},
+	events: {
+		event: new MouseEvent('click')
+	},
+	immutable: true,
+	intro: false,
+	recover: false
+});
+
+const instance = createRoot(NewComponent, {
 	target: null as any as Document | Element | ShadowRoot | Text | Comment,
 	props: {
 		prop: 'foo',