[Glitch] [Proposal] Make able to write React in Typescript (#2190)

Port 4520e6473a to glitch-soc

Signed-off-by: Plastikmensch <plastikmensch@users.noreply.github.com>

app/javascript/flavours/glitch/initial_state.js

@@ -51,6 +51,7 @@
  * @property {boolean} activity_api_enabled
  * @property {string} admin
  * @property {boolean=} boost_modal
+ * @property {boolean=} favourite_modal
  * @property {boolean} crop_images
  * @property {boolean=} delete_modal
  * @property {boolean=} disable_swiping
@@ -81,7 +82,9 @@
  * @property {boolean=} use_pending_items
  * @property {string} version
  * @property {boolean} translation_enabled
- * @property {object} local_settings
+ * @property {string} status_page_url
+ * @property {boolean} system_emoji_font
+ * @property {string} default_content_type
  */
 
 /**
@@ -89,6 +92,9 @@
  * @property {Record<string, Account>} accounts
  * @property {InitialStateLanguage[]} languages
  * @property {InitialStateMeta} meta
+ * @property {object} local_settings
+ * @property {number} max_toot_chars
+ * @property {number} poll_limits
  */
 
 const element = document.getElementById('initial-state');
@@ -98,6 +104,7 @@ const initialState = element?.textContent && JSON.parse(element.textContent);
 // Glitch-soc-specific “local settings”
 if (initialState) {
   try {
+    // @ts-expect-error
     initialState.local_settings = JSON.parse(localStorage.getItem('mastodon-settings'));
   } catch (e) {
     initialState.local_settings = {};