Run prettier over everything and fix some imports

src/lib/internal/StackContextProvider.svelte

@@ -1,42 +1,39 @@
 <script lang="ts" context="module">
-    export enum StackMessage {
-        Add,
-        Remove,
-    }
+  export enum StackMessage {
+    Add,
+    Remove,
+  }
 </script>
 
 <script lang="ts">
-    import { getContext, setContext } from "svelte";
-    import { writable, Writable } from "svelte/store";
-    type OnUpdate = (
-        message: StackMessage,
-        element: HTMLElement | null
-    ) => void;
+  import { getContext, setContext } from "svelte";
+  import { writable, Writable } from "svelte/store";
+  type OnUpdate = (message: StackMessage, element: HTMLElement | null) => void;
 
-    export let onUpdate: OnUpdate | undefined;
-    export let element: HTMLElement | null;
+  export let onUpdate: OnUpdate | undefined;
+  export let element: HTMLElement | null;
 
-    let parentUpdateStore: Writable<OnUpdate> | undefined =
-        getContext("StackContext");
-    let notifyStore: Writable<OnUpdate> = writable(() => {});
-    setContext("StackContext", notifyStore);
+  let parentUpdateStore: Writable<OnUpdate> | undefined =
+    getContext("StackContext");
+  let notifyStore: Writable<OnUpdate> = writable(() => {});
+  setContext("StackContext", notifyStore);
 
-    $: notifyStore.set((...args: Parameters<OnUpdate>) => {
-        // Notify our layer
-        onUpdate?.(...args);
+  $: notifyStore.set((...args: Parameters<OnUpdate>) => {
+    // Notify our layer
+    onUpdate?.(...args);
 
-        // Notify the parent
-        $parentUpdateStore?.(...args);
-    });
+    // Notify the parent
+    $parentUpdateStore?.(...args);
+  });
 
-    $: _cleanup = (() => {
-        if (_cleanup) {
-            _cleanup();
-        }
-        if (!element) return null;
-        $notifyStore(StackMessage.Add, element);
-        return () => $notifyStore(StackMessage.Remove, element);
-    })();
+  $: _cleanup = (() => {
+    if (_cleanup) {
+      _cleanup();
+    }
+    if (!element) return null;
+    $notifyStore(StackMessage.Add, element);
+    return () => $notifyStore(StackMessage.Remove, element);
+  })();
 </script>
 
 <slot />