Organize exports

Properly define exports.

src/common/app.ts

@@ -1,11 +1,10 @@
 import {Resource} from './resource';
-import {Language} from './language';
-import {MediaType} from './media-type';
-import {Charset} from './charset';
+import {FALLBACK_LANGUAGE, Language} from './language';
+import {FALLBACK_MEDIA_TYPE, MediaType} from './media-type';
+import {Charset, FALLBACK_CHARSET} from './charset';
 import * as v from 'valibot';
 import {BackendBuilder, createBackend, CreateBackendParams} from '../backend';
 import {ClientBuilder, createClient, CreateClientParams} from '../client';
-import {FALLBACK_CHARSET, FALLBACK_LANGUAGE, FALLBACK_MEDIA_TYPE} from './index';
 
 type ApplicationMap<T extends { name: string }> = Map<T['name'], T>;
 
@@ -34,13 +33,13 @@ export const application = (appParams: ApplicationParams): ApplicationBuilder =>
 	const appState: ApplicationState = {
 		name: appParams.name,
 		resources: new Set<Resource<any>>(),
-		languages: new Map<Language["name"], Language>([
+		languages: new Map<Language['name'], Language>([
 			[FALLBACK_LANGUAGE.name, FALLBACK_LANGUAGE],
 		]),
-		mediaTypes: new Map<MediaType["name"], MediaType>([
+		mediaTypes: new Map<MediaType['name'], MediaType>([
 			[FALLBACK_MEDIA_TYPE.name, FALLBACK_MEDIA_TYPE],
 		]),
-		charsets: new Map<Charset["name"], Charset>([
+		charsets: new Map<Charset['name'], Charset>([
 			[FALLBACK_CHARSET.name, FALLBACK_CHARSET],
 		]),
 	};

src/common/index.ts

@@ -7,6 +7,7 @@ export * from './charset';
 export * from './media-type';
 export * from './resource';
 export * from './language';
+export * as validation from './validation';
 
 export interface ContentNegotiation {
 	language: Language;

src/index.ts

@@ -1,4 +1,3 @@
 export * from './common';
-export * as validation from './common/validation';
 
 export * as dataSources from './backend/data-sources';