Sync svelte docs (#1014)

sync svelte docs

Co-authored-by: Rich-Harris <[email protected]>

Author: github-actions[bot]

apps/svelte.dev/content/docs/svelte/06-runtime/04-imperative-component-api.md

@@ -34,19 +34,22 @@ Note that unlike calling `new App(...)` in Svelte 4, things like effects (includ
 
 ## `unmount`
 
-Unmounts a component created with [`mount`](#mount) or [`hydrate`](#hydrate):
+Unmounts a component that was previously created with [`mount`](#mount) or [`hydrate`](#hydrate).
+
+If `options.outro` is `true`, [transitions](transition) will play before the component is removed from the DOM:
 
 ```js
-// @errors: 1109
 import { mount, unmount } from 'svelte';
 import App from './App.svelte';
 
-const app = mount(App, {...});
+const app = mount(App, { target: document.body });
 
 // later
-unmount(app);
+unmount(app, { outro: true });
 ```
 
+Returns a `Promise` that resolves after transitions have completed if `options.outro` is true, or immediately otherwise.
+
 ## `render`
 
 Only available on the server and when compiling with the `server` option. Takes a component and returns an object with `body` and `head` properties on it, which you can use to populate the HTML when server-rendering your app:

apps/svelte.dev/content/docs/svelte/98-reference/20-svelte.md

@@ -477,10 +477,32 @@ function tick(): Promise<void>;
 
 Unmounts a component that was previously mounted using `mount` or `hydrate`.
 
+Since 5.13.0, if `options.outro` is `true`, [transitions](/docs/svelte/transition) will play before the component is removed from the DOM.
+
+Returns a `Promise` that resolves after transitions have completed if `options.outro` is true, or immediately otherwise (prior to 5.13.0, returns `void`).
+
+```js
+// @errors: 7031
+import { mount, unmount } from 'svelte';
+import App from './App.svelte';
+
+const app = mount(App, { target: document.body });
+
+// later...
+unmount(app, { outro: true });
+```
+
 <div class="ts-block">
 
 ```dts
-function unmount(component: Record<string, any>): void;
+function unmount(
+	component: Record<string, any>,
+	options?:
+		| {
+				outro?: boolean;
+		  }
+		| undefined
+): Promise<void>;
 ```
 
 </div>

apps/svelte.dev/content/docs/svelte/98-reference/21-svelte-compiler.md

@@ -111,6 +111,7 @@ function parse(
 	options: {
 		filename?: string;
 		modern: true;
+		loose?: boolean;
 	}
 ): AST.Root;
 ```
@@ -126,6 +127,7 @@ function parse(
 		| {
 				filename?: string;
 				modern?: false;
+				loose?: boolean;
 		  }
 		| undefined
 ): Record<string, any>;