bump tsconfig#lib to ES2024, no need to hack-in Map.groupBy typing

- removed sleep too, it was unused

Author: gdamjan

src/libs/couch.svelte.ts

@@ -173,20 +173,3 @@ function msg2View(msg: Message): MessageView {
     slug: slugify(Math.trunc(msg.timestamp)),
   };
 }
-
-/**
- * Awaitable sleep based on setTimeout
- * @param delay miliseconds
- */
-function sleep(delay: number): Promise<void> {
-  return new Promise((resolve) => setTimeout(resolve, delay));
-}
-
-// FIXME:
-// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/groupBy
-// https://github.com/microsoft/TypeScript/pull/56805
-declare global {
-  interface MapConstructor {
-    groupBy<Item, Key>(items: Iterable<Item>, keySelector: (item: Item, index: number) => Key): Map<Key, Item[]>;
-  }
-}

tsconfig.json

@@ -3,6 +3,8 @@
   "compilerOptions": {
     "moduleDetection": "force",
     "target": "ES2023",
+    "lib": ["ES2024", "DOM"],
+    "strict": true,
     "allowJs": true,
     "checkJs": true,
     "resolveJsonModule": true,