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/utils/get-default-value.ts

@@ -2,7 +2,9 @@ import getLocalType from './get-local-type';
 import { Column } from 'knex-schema-inspector/dist/types/column';
 import { SchemaOverview } from '@directus/schema/dist/types/overview';
 
-export default function getDefaultValue(column: SchemaOverview[string]['columns'][string] | Column) {
+export default function getDefaultValue(
+	column: SchemaOverview[string]['columns'][string] | Column
+): string | boolean | null {
 	const type = getLocalType(column);
 
 	let defaultValue = column.default_value ?? null;