Syntax fixes (#5367)

* Declare return types on functions

And a very few other type related minor fixes

* Minor syntax fixes

* Remove unnecessary escape chars in regexes
* Remove unnecessary awaits
* Replace deprecated req.connection with req.socket
* Replace deprecated upload with uploadOne
* Remove unnecessary eslint-disable-next-line comments
* Comment empty functions / catch or finally clauses
* Fix irregular whitespaces
* Add missing returns (null)
* Remove unreachable code
* A few logical fixes
* Remove / Handle non-null assertions which are certainly unnecessary (e.g. in
tests)

app/src/components/v-table/v-table.vue

@@ -265,7 +265,7 @@ export default defineComponent({
 				if (_sort.value.desc === true) return itemsSorted.reverse();
 				return itemsSorted;
 			},
-			set: (value: object[]) => {
+			set: (value: Record<string, any>) => {
 				emit('update:items', value);
 			},
 		});