Add stronger typing to publication layout store

src/lib/stores.ts

@@ -1,5 +1,5 @@
-import { readable, writable } from "svelte/store";
-import { FeedType } from "./consts";
+import { readable, writable } from 'svelte/store';
+import { FeedType } from './consts.ts';
 
 export let idList = writable<string[]>([]);
 
@@ -7,8 +7,16 @@ export let alexandriaKinds = readable<number[]>([30040, 30041, 30818]);
 
 export let feedType = writable<FeedType>(FeedType.StandardRelays);
 
+export interface PublicationLayoutVisibility {
+  toc: boolean;
+  blog: boolean;
+  main: boolean;
+  inner: boolean;
+  discussion: boolean;
+  editing: boolean;
+}
 
-const defaultVisibility = {
+const defaultVisibility: PublicationLayoutVisibility = {
   toc: false,
   blog: true,
   main: true,
@@ -18,7 +26,8 @@ const defaultVisibility = {
 };
 
 function createVisibilityStore() {
-  const { subscribe, set, update } = writable({ ...defaultVisibility });
+  const { subscribe, set, update }
+    = writable<PublicationLayoutVisibility>({ ...defaultVisibility });
 
   return {
     subscribe,