refactor(frontend): frontend-embed/src/to-be-sharedを共通化 (#14536)

* refactor(frontend): shouldCollapsedを共通化

* refactor(frontend): config.js, worker-multi-dispatch.js, intl-const.jsを共通化

* fix(frontend-shared): fix type error

* refactor(frontend): is-link.jsと、同一の振る舞いをする記述を共通化

* fix

* fix lint

* lint fixes

packages/frontend-shared/js/config.ts

@@ -0,0 +1,28 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import type { Locale } from '../../../locales/index.js';
+
+// eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing
+const address = new URL(document.querySelector<HTMLMetaElement>('meta[property="instance_url"]')?.content || location.href);
+const siteName = document.querySelector<HTMLMetaElement>('meta[property="og:site_name"]')?.content;
+
+export const host = address.host;
+export const hostname = address.hostname;
+export const url = address.origin;
+export const apiUrl = location.origin + '/api';
+export const wsOrigin = location.origin;
+export const lang = localStorage.getItem('lang') ?? 'en-US';
+export const langs = _LANGS_;
+const preParseLocale = localStorage.getItem('locale');
+export let locale: Locale = preParseLocale ? JSON.parse(preParseLocale) : null;
+export const version = _VERSION_;
+export const instanceName = (siteName === 'Misskey' || siteName == null) ? host : siteName;
+export const ui = localStorage.getItem('ui');
+export const debug = localStorage.getItem('debug') === 'true';
+
+export function updateLocale(newLocale: Locale): void {
+	locale = newLocale;
+}