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)

api/src/services/utils.ts

@@ -15,7 +15,7 @@ export class UtilsService {
 		this.schema = options.schema;
 	}
 
-	async sort(collection: string, { item, to }: { item: PrimaryKey; to: PrimaryKey }) {
+	async sort(collection: string, { item, to }: { item: PrimaryKey; to: PrimaryKey }): Promise<void> {
 		const sortFieldResponse =
 			(await this.knex.select('sort_field').from('directus_collections').where({ collection }).first()) ||
 			systemCollectionRows;