diff --git a/_regroup/package.json b/_regroup/package.json
index 90d904504..d52334b97 100644
--- a/_regroup/package.json
+++ b/_regroup/package.json
@@ -143,7 +143,6 @@
     "@stylistic/eslint-plugin": "4.2.0",
     "@types/archiver": "6.0.3",
     "@types/better-sqlite3": "7.6.13",
-    "@types/bootstrap": "5.2.10",
     "@types/cheerio": "0.22.35",
     "@types/cls-hooked": "4.3.9",
     "@types/compression": "1.7.5",
@@ -178,7 +177,6 @@
     "@types/xml2js": "0.4.14",
     "@types/yargs": "17.0.33",
     "@vitest/coverage-v8": "3.1.1",
-    "bootstrap": "5.3.5",
     "cross-env": "7.0.3",
     "css-loader": "7.1.2",
     "electron": "35.1.5",
diff --git a/_regroup/src/services/i18n.ts b/_regroup/src/services/i18n.ts
index fc8316494..5d3c93050 100644
--- a/_regroup/src/services/i18n.ts
+++ b/_regroup/src/services/i18n.ts
@@ -5,17 +5,7 @@ import sql_init from "./sql_init.js";
 import { join } from "path";
 import { getResourceDir } from "./utils.js";
 import hidden_subtree from "./hidden_subtree.js";
-
-export interface Locale {
-    id: string;
-    name: string;
-    /** `true` if the language is a right-to-left one, or `false` if it's left-to-right. */
-    rtl?: boolean;
-    /** `true` if the language is not supported by the application as a display language, but it is selectable by the user for the content. */
-    contentOnly?: boolean;
-    /** The value to pass to `--lang` for the Electron instance in order to set it as a locale. Not setting it will hide it from the list of supported locales. */
-    electronLocale?: string;
-}
+import type { Locale } from "@triliumnext/commons";
 
 const LOCALES: Locale[] = [
     {
diff --git a/apps/client/package.json b/apps/client/package.json
index 5379c1f38..b90eae9aa 100644
--- a/apps/client/package.json
+++ b/apps/client/package.json
@@ -67,6 +67,8 @@
     "electron": "35.1.5",
     "debounce": "2.2.0",
     "draggabilly": "3.0.0",
-    "vitest": "3.1.1"
+    "vitest": "3.1.1",
+    "@types/bootstrap": "5.2.10",
+    "bootstrap": "5.3.5"
   }
 }
diff --git a/apps/client/src/widgets/type_widgets/options/advanced/database_anonymization.ts b/apps/client/src/widgets/type_widgets/options/advanced/database_anonymization.ts
index 2726a489b..edef0e4d4 100644
--- a/apps/client/src/widgets/type_widgets/options/advanced/database_anonymization.ts
+++ b/apps/client/src/widgets/type_widgets/options/advanced/database_anonymization.ts
@@ -2,7 +2,7 @@ import OptionsWidget from "../options_widget.js";
 import toastService from "../../../../services/toast.js";
 import server from "../../../../services/server.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/advanced/sync.ts b/apps/client/src/widgets/type_widgets/options/advanced/sync.ts
index 39eee0f97..503ad1b3a 100644
--- a/apps/client/src/widgets/type_widgets/options/advanced/sync.ts
+++ b/apps/client/src/widgets/type_widgets/options/advanced/sync.ts
@@ -2,7 +2,7 @@ import OptionsWidget from "../options_widget.js";
 import server from "../../../../services/server.js";
 import toastService from "../../../../services/toast.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/ai_settings/ai_settings_widget.ts b/apps/client/src/widgets/type_widgets/options/ai_settings/ai_settings_widget.ts
index 269b958ba..8f76eac4b 100644
--- a/apps/client/src/widgets/type_widgets/options/ai_settings/ai_settings_widget.ts
+++ b/apps/client/src/widgets/type_widgets/options/ai_settings/ai_settings_widget.ts
@@ -1,7 +1,7 @@
 import OptionsWidget from "../options_widget.js";
 import { TPL } from "./template.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionDefinitions, OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionDefinitions, OptionMap } from "@triliumnext/commons";
 import server from "../../../../services/server.js";
 import toastService from "../../../../services/toast.js";
 import type { EmbeddingStats, FailedEmbeddingNotes } from "./interfaces.js";
diff --git a/apps/client/src/widgets/type_widgets/options/appearance/code_block.ts b/apps/client/src/widgets/type_widgets/options/appearance/code_block.ts
index 2ed221088..44182fdae 100644
--- a/apps/client/src/widgets/type_widgets/options/appearance/code_block.ts
+++ b/apps/client/src/widgets/type_widgets/options/appearance/code_block.ts
@@ -1,4 +1,4 @@
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 import { t } from "../../../../services/i18n.js";
 import library_loader from "../../../../services/library_loader.js";
 import server from "../../../../services/server.js";
diff --git a/apps/client/src/widgets/type_widgets/options/appearance/electron_integration.ts b/apps/client/src/widgets/type_widgets/options/appearance/electron_integration.ts
index 2a0181dd4..b49a7503b 100644
--- a/apps/client/src/widgets/type_widgets/options/appearance/electron_integration.ts
+++ b/apps/client/src/widgets/type_widgets/options/appearance/electron_integration.ts
@@ -1,7 +1,7 @@
 import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
 import utils from "../../../../services/utils.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/appearance/fonts.ts b/apps/client/src/widgets/type_widgets/options/appearance/fonts.ts
index d9f68f5b7..7d4fa3ce0 100644
--- a/apps/client/src/widgets/type_widgets/options/appearance/fonts.ts
+++ b/apps/client/src/widgets/type_widgets/options/appearance/fonts.ts
@@ -1,7 +1,7 @@
 import OptionsWidget from "../options_widget.js";
 import utils from "../../../../services/utils.js";
 import { t } from "../../../../services/i18n.js";
-import type { FontFamily, OptionMap, OptionNames } from "../../../../../../services/options_interface.js";
+import type { FontFamily, OptionMap, OptionNames } from "@triliumnext/commons";
 
 interface FontFamilyEntry {
     value: FontFamily;
diff --git a/apps/client/src/widgets/type_widgets/options/appearance/max_content_width.ts b/apps/client/src/widgets/type_widgets/options/appearance/max_content_width.ts
index 7b6bccff1..1cf576034 100644
--- a/apps/client/src/widgets/type_widgets/options/appearance/max_content_width.ts
+++ b/apps/client/src/widgets/type_widgets/options/appearance/max_content_width.ts
@@ -1,7 +1,7 @@
 import OptionsWidget from "../options_widget.js";
 import utils from "../../../../services/utils.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const MIN_VALUE = 640;
 
diff --git a/apps/client/src/widgets/type_widgets/options/appearance/ribbon.ts b/apps/client/src/widgets/type_widgets/options/appearance/ribbon.ts
index 257dac0ee..861410790 100644
--- a/apps/client/src/widgets/type_widgets/options/appearance/ribbon.ts
+++ b/apps/client/src/widgets/type_widgets/options/appearance/ribbon.ts
@@ -1,4 +1,4 @@
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 import { t } from "../../../../services/i18n.js";
 import OptionsWidget from "../options_widget.js";
 
diff --git a/apps/client/src/widgets/type_widgets/options/appearance/theme.ts b/apps/client/src/widgets/type_widgets/options/appearance/theme.ts
index 17a88c3b6..a46408d78 100644
--- a/apps/client/src/widgets/type_widgets/options/appearance/theme.ts
+++ b/apps/client/src/widgets/type_widgets/options/appearance/theme.ts
@@ -2,7 +2,7 @@ import OptionsWidget from "../options_widget.js";
 import server from "../../../../services/server.js";
 import utils from "../../../../services/utils.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/backup.ts b/apps/client/src/widgets/type_widgets/options/backup.ts
index 808f91e92..9fd79803f 100644
--- a/apps/client/src/widgets/type_widgets/options/backup.ts
+++ b/apps/client/src/widgets/type_widgets/options/backup.ts
@@ -3,7 +3,7 @@ import { t } from "../../../services/i18n.js";
 import OptionsWidget from "./options_widget.js";
 import server from "../../../services/server.js";
 import toastService from "../../../services/toast.js";
-import type { OptionMap } from "../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/code_notes/code_auto_read_only_size.ts b/apps/client/src/widgets/type_widgets/options/code_notes/code_auto_read_only_size.ts
index 17cd0bb35..b3b7bad0f 100644
--- a/apps/client/src/widgets/type_widgets/options/code_notes/code_auto_read_only_size.ts
+++ b/apps/client/src/widgets/type_widgets/options/code_notes/code_auto_read_only_size.ts
@@ -1,4 +1,4 @@
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 import { t } from "../../../../services/i18n.js";
 import OptionsWidget from "../options_widget.js";
 
diff --git a/apps/client/src/widgets/type_widgets/options/code_notes/code_editor.ts b/apps/client/src/widgets/type_widgets/options/code_notes/code_editor.ts
index 728a58f81..f99b12b50 100644
--- a/apps/client/src/widgets/type_widgets/options/code_notes/code_editor.ts
+++ b/apps/client/src/widgets/type_widgets/options/code_notes/code_editor.ts
@@ -1,6 +1,6 @@
 import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/code_notes/code_mime_types.ts b/apps/client/src/widgets/type_widgets/options/code_notes/code_mime_types.ts
index b8250f67d..7bb4ecac8 100644
--- a/apps/client/src/widgets/type_widgets/options/code_notes/code_mime_types.ts
+++ b/apps/client/src/widgets/type_widgets/options/code_notes/code_mime_types.ts
@@ -1,7 +1,7 @@
 import { t } from "../../../../services/i18n.js";
 import OptionsWidget from "../options_widget.js";
 import mimeTypesService from "../../../../services/mime_types.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/i18n/i18n.ts b/apps/client/src/widgets/type_widgets/options/i18n/i18n.ts
index b75c99fc2..48fb29546 100644
--- a/apps/client/src/widgets/type_widgets/options/i18n/i18n.ts
+++ b/apps/client/src/widgets/type_widgets/options/i18n/i18n.ts
@@ -2,8 +2,7 @@ import OptionsWidget from "../options_widget.js";
 import server from "../../../../services/server.js";
 import utils from "../../../../services/utils.js";
 import { getAvailableLocales, t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
-import type { Locale } from "../../../../../../services/i18n.js";
+import type { OptionMap, Locale } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/i18n/language.ts b/apps/client/src/widgets/type_widgets/options/i18n/language.ts
index 4ccf18550..7a10e0a15 100644
--- a/apps/client/src/widgets/type_widgets/options/i18n/language.ts
+++ b/apps/client/src/widgets/type_widgets/options/i18n/language.ts
@@ -1,5 +1,5 @@
 import OptionsWidget from "../options_widget.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 import { getAvailableLocales } from "../../../../services/i18n.js";
 import { t } from "i18next";
 
diff --git a/apps/client/src/widgets/type_widgets/options/images/images.ts b/apps/client/src/widgets/type_widgets/options/images/images.ts
index da2005fef..d74cd4b70 100644
--- a/apps/client/src/widgets/type_widgets/options/images/images.ts
+++ b/apps/client/src/widgets/type_widgets/options/images/images.ts
@@ -1,6 +1,6 @@
 import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/multi_factor_authentication.ts b/apps/client/src/widgets/type_widgets/options/multi_factor_authentication.ts
index d75a6a7bc..211a4941d 100644
--- a/apps/client/src/widgets/type_widgets/options/multi_factor_authentication.ts
+++ b/apps/client/src/widgets/type_widgets/options/multi_factor_authentication.ts
@@ -1,7 +1,7 @@
 import server from "../../../services/server.js";
 import toastService from "../../../services/toast.js";
 import OptionsWidget from "./options_widget.js";
-import type { OptionMap } from "../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 import { t } from "../../../services/i18n.js";
 import utils from "../../../services/utils.js";
 import dialogService from "../../../services/dialog.js";
diff --git a/apps/client/src/widgets/type_widgets/options/options_widget.ts b/apps/client/src/widgets/type_widgets/options/options_widget.ts
index 5d614a42e..331358995 100644
--- a/apps/client/src/widgets/type_widgets/options/options_widget.ts
+++ b/apps/client/src/widgets/type_widgets/options/options_widget.ts
@@ -1,4 +1,4 @@
-import type { FilterOptionsByType, OptionMap, OptionNames } from "../../../../../services/options_interface.js";
+import type { FilterOptionsByType, OptionMap, OptionNames } from "@triliumnext/commons";
 import type { EventData, EventListener } from "../../../components/app_context.js";
 import type FNote from "../../../entities/fnote.js";
 import { t } from "../../../services/i18n.js";
diff --git a/apps/client/src/widgets/type_widgets/options/other/html_import_tags.ts b/apps/client/src/widgets/type_widgets/options/other/html_import_tags.ts
index 61542ea62..5bb626965 100644
--- a/apps/client/src/widgets/type_widgets/options/other/html_import_tags.ts
+++ b/apps/client/src/widgets/type_widgets/options/other/html_import_tags.ts
@@ -1,6 +1,6 @@
 import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 // TODO: Deduplicate with src/services/html_sanitizer once there is a commons project between client and server.
 export const DEFAULT_ALLOWED_TAGS = [
diff --git a/apps/client/src/widgets/type_widgets/options/other/network_connections.ts b/apps/client/src/widgets/type_widgets/options/other/network_connections.ts
index 90f0bbb78..529b9959e 100644
--- a/apps/client/src/widgets/type_widgets/options/other/network_connections.ts
+++ b/apps/client/src/widgets/type_widgets/options/other/network_connections.ts
@@ -1,6 +1,6 @@
 import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/other/note_erasure_timeout.ts b/apps/client/src/widgets/type_widgets/options/other/note_erasure_timeout.ts
index 343834006..96292ab37 100644
--- a/apps/client/src/widgets/type_widgets/options/other/note_erasure_timeout.ts
+++ b/apps/client/src/widgets/type_widgets/options/other/note_erasure_timeout.ts
@@ -2,7 +2,7 @@ import OptionsWidget from "../options_widget.js";
 import server from "../../../../services/server.js";
 import toastService from "../../../../services/toast.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 import TimeSelector from "../time_selector.js";
 
 const TPL = /*html*/`
diff --git a/apps/client/src/widgets/type_widgets/options/other/revision_snapshots_limit.ts b/apps/client/src/widgets/type_widgets/options/other/revision_snapshots_limit.ts
index 62781de9f..55f734818 100644
--- a/apps/client/src/widgets/type_widgets/options/other/revision_snapshots_limit.ts
+++ b/apps/client/src/widgets/type_widgets/options/other/revision_snapshots_limit.ts
@@ -2,7 +2,7 @@ import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
 import server from "../../../../services/server.js";
 import toastService from "../../../../services/toast.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/other/search_engine.ts b/apps/client/src/widgets/type_widgets/options/other/search_engine.ts
index 345d3dc47..b512a3cae 100644
--- a/apps/client/src/widgets/type_widgets/options/other/search_engine.ts
+++ b/apps/client/src/widgets/type_widgets/options/other/search_engine.ts
@@ -1,7 +1,7 @@
 import OptionsWidget from "../options_widget.js";
 import utils from "../../../../services/utils.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/other/share_settings.ts b/apps/client/src/widgets/type_widgets/options/other/share_settings.ts
index 1b1eba047..7d51bb499 100644
--- a/apps/client/src/widgets/type_widgets/options/other/share_settings.ts
+++ b/apps/client/src/widgets/type_widgets/options/other/share_settings.ts
@@ -1,7 +1,7 @@
 import OptionsWidget from "../options_widget.js";
 import options from "../../../../services/options.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap, OptionNames } from "../../../../../../services/options_interface.js";
+import type { OptionMap, OptionNames } from "@triliumnext/commons";
 import searchService from "../../../../services/search.js";
 
 const TPL = /*html*/`
diff --git a/apps/client/src/widgets/type_widgets/options/other/tray.ts b/apps/client/src/widgets/type_widgets/options/other/tray.ts
index e314dd777..3760fe6d6 100644
--- a/apps/client/src/widgets/type_widgets/options/other/tray.ts
+++ b/apps/client/src/widgets/type_widgets/options/other/tray.ts
@@ -1,7 +1,7 @@
 import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
 import utils from "../../../../services/utils.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/password/password.ts b/apps/client/src/widgets/type_widgets/options/password/password.ts
index e61f5e92a..c23b3a7a0 100644
--- a/apps/client/src/widgets/type_widgets/options/password/password.ts
+++ b/apps/client/src/widgets/type_widgets/options/password/password.ts
@@ -3,7 +3,7 @@ import server from "../../../../services/server.js";
 import protectedSessionHolder from "../../../../services/protected_session_holder.js";
 import toastService from "../../../../services/toast.js";
 import OptionsWidget from "../options_widget.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/shortcuts.ts b/apps/client/src/widgets/type_widgets/options/shortcuts.ts
index c25cbebf4..04d75262d 100644
--- a/apps/client/src/widgets/type_widgets/options/shortcuts.ts
+++ b/apps/client/src/widgets/type_widgets/options/shortcuts.ts
@@ -3,8 +3,7 @@ import utils from "../../../services/utils.js";
 import dialogService from "../../../services/dialog.js";
 import OptionsWidget from "./options_widget.js";
 import { t } from "../../../services/i18n.js";
-import type { KeyboardShortcut } from "../../../../../services/keyboard_actions_interface.js";
-import type { OptionNames } from "../../../../../services/options_interface.js";
+import type { OptionNames, KeyboardShortcut } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section shortcuts-options-section tn-no-card">
diff --git a/apps/client/src/widgets/type_widgets/options/spellcheck.ts b/apps/client/src/widgets/type_widgets/options/spellcheck.ts
index 87994909d..43aca1c69 100644
--- a/apps/client/src/widgets/type_widgets/options/spellcheck.ts
+++ b/apps/client/src/widgets/type_widgets/options/spellcheck.ts
@@ -1,7 +1,7 @@
 import utils from "../../../services/utils.js";
 import OptionsWidget from "./options_widget.js";
 import { t } from "../../../services/i18n.js";
-import type { OptionMap } from "../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL_WEB = `
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/sync.ts b/apps/client/src/widgets/type_widgets/options/sync.ts
index f2be3f40d..0fd94a4f9 100644
--- a/apps/client/src/widgets/type_widgets/options/sync.ts
+++ b/apps/client/src/widgets/type_widgets/options/sync.ts
@@ -2,7 +2,7 @@ import server from "../../../services/server.js";
 import toastService from "../../../services/toast.js";
 import OptionsWidget from "./options_widget.js";
 import { t } from "../../../services/i18n.js";
-import type { OptionMap } from "../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/text_notes/editor.ts b/apps/client/src/widgets/type_widgets/options/text_notes/editor.ts
index dc5ef53da..d55a704a5 100644
--- a/apps/client/src/widgets/type_widgets/options/text_notes/editor.ts
+++ b/apps/client/src/widgets/type_widgets/options/text_notes/editor.ts
@@ -1,4 +1,4 @@
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 import { t } from "../../../../services/i18n.js";
 import utils from "../../../../services/utils.js";
 import OptionsWidget from "../options_widget.js";
diff --git a/apps/client/src/widgets/type_widgets/options/text_notes/heading_style.ts b/apps/client/src/widgets/type_widgets/options/text_notes/heading_style.ts
index c45ce08ca..a82a57c50 100644
--- a/apps/client/src/widgets/type_widgets/options/text_notes/heading_style.ts
+++ b/apps/client/src/widgets/type_widgets/options/text_notes/heading_style.ts
@@ -1,6 +1,6 @@
 import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/text_notes/highlights_list.ts b/apps/client/src/widgets/type_widgets/options/text_notes/highlights_list.ts
index 555cdf6eb..b54bd635a 100644
--- a/apps/client/src/widgets/type_widgets/options/text_notes/highlights_list.ts
+++ b/apps/client/src/widgets/type_widgets/options/text_notes/highlights_list.ts
@@ -1,6 +1,6 @@
 import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/text_notes/table_of_contents.ts b/apps/client/src/widgets/type_widgets/options/text_notes/table_of_contents.ts
index 3ca009426..aa20e6998 100644
--- a/apps/client/src/widgets/type_widgets/options/text_notes/table_of_contents.ts
+++ b/apps/client/src/widgets/type_widgets/options/text_notes/table_of_contents.ts
@@ -1,6 +1,6 @@
 import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/text_notes/text_auto_read_only_size.ts b/apps/client/src/widgets/type_widgets/options/text_notes/text_auto_read_only_size.ts
index f69db7a9e..ef48abaaa 100644
--- a/apps/client/src/widgets/type_widgets/options/text_notes/text_auto_read_only_size.ts
+++ b/apps/client/src/widgets/type_widgets/options/text_notes/text_auto_read_only_size.ts
@@ -1,6 +1,6 @@
 import OptionsWidget from "../options_widget.js";
 import { t } from "../../../../services/i18n.js";
-import type { OptionMap } from "../../../../../../services/options_interface.js";
+import type { OptionMap } from "@triliumnext/commons";
 
 const TPL = /*html*/`
 <div class="options-section">
diff --git a/apps/client/src/widgets/type_widgets/options/time_selector.ts b/apps/client/src/widgets/type_widgets/options/time_selector.ts
index 71115a45c..b9de25014 100644
--- a/apps/client/src/widgets/type_widgets/options/time_selector.ts
+++ b/apps/client/src/widgets/type_widgets/options/time_selector.ts
@@ -1,7 +1,7 @@
 import OptionsWidget from "./options_widget.js";
 import toastService from "../../../services/toast.js";
 import { t } from "../../../services/i18n.js";
-import type { OptionDefinitions, OptionMap } from "../../../../../services/options_interface.js";
+import type { OptionDefinitions, OptionMap } from "@triliumnext/commons";
 import optionsService from "../../../services/options.js";
 
 type TimeSelectorConstructor = {
diff --git a/package-lock.json b/package-lock.json
index 9854bb652..b502029d9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6242,19 +6242,6 @@
                 "url": "https://github.com/sponsors/sindresorhus"
             }
         },
-        "apps/client/node_modules/typescript": {
-            "version": "5.8.3",
-            "dev": true,
-            "license": "Apache-2.0",
-            "peer": true,
-            "bin": {
-                "tsc": "bin/tsc",
-                "tsserver": "bin/tsserver"
-            },
-            "engines": {
-                "node": ">=14.17"
-            }
-        },
         "apps/client/node_modules/ufo": {
             "version": "1.6.1",
             "dev": true,
@@ -6877,10 +6864,27 @@
             "resolved": "packages/commons",
             "link": true
         },
+        "node_modules/typescript": {
+            "version": "5.8.3",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.8.3.tgz",
+            "integrity": "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==",
+            "dev": true,
+            "license": "Apache-2.0",
+            "bin": {
+                "tsc": "bin/tsc",
+                "tsserver": "bin/tsserver"
+            },
+            "engines": {
+                "node": ">=14.17"
+            }
+        },
         "packages/commons": {
             "name": "@triliumnext/commons",
             "version": "0.0.1",
-            "license": "AGPL-3.0-only"
+            "license": "AGPL-3.0-only",
+            "devDependencies": {
+                "typescript": "5.8.3"
+            }
         }
     }
 }
diff --git a/packages/commons/.gitignore b/packages/commons/.gitignore
new file mode 100644
index 000000000..c795b054e
--- /dev/null
+++ b/packages/commons/.gitignore
@@ -0,0 +1 @@
+build
\ No newline at end of file
diff --git a/packages/commons/package.json b/packages/commons/package.json
index 759ff99a8..4191be150 100644
--- a/packages/commons/package.json
+++ b/packages/commons/package.json
@@ -17,8 +17,12 @@
     "url": "https://github.com/TriliumNext/Notes"
   },
   "type": "module",
-  "main": "index.js",
+  "main": "build/index.js",
+  "types": "build/index.d.ts",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "build": "tsc"
+  },
+  "devDependencies": {
+    "typescript": "5.8.3"
   }
 }
diff --git a/packages/commons/src/i18n.ts b/packages/commons/src/i18n.ts
new file mode 100644
index 000000000..43fa82eb8
--- /dev/null
+++ b/packages/commons/src/i18n.ts
@@ -0,0 +1,10 @@
+export interface Locale {
+    id: string;
+    name: string;
+    /** `true` if the language is a right-to-left one, or `false` if it's left-to-right. */
+    rtl?: boolean;
+    /** `true` if the language is not supported by the application as a display language, but it is selectable by the user for the content. */
+    contentOnly?: boolean;
+    /** The value to pass to `--lang` for the Electron instance in order to set it as a locale. Not setting it will hide it from the list of supported locales. */
+    electronLocale?: string;
+}
\ No newline at end of file
diff --git a/packages/commons/src/index.ts b/packages/commons/src/index.ts
new file mode 100644
index 000000000..b5c128e89
--- /dev/null
+++ b/packages/commons/src/index.ts
@@ -0,0 +1,3 @@
+export * from "./i18n.js";
+export * from "./options_interface.js";
+export * from "./keyboard_actions_interface.js";
\ No newline at end of file
diff --git a/packages/commons/tsconfig.json b/packages/commons/tsconfig.json
new file mode 100644
index 000000000..917a4a20c
--- /dev/null
+++ b/packages/commons/tsconfig.json
@@ -0,0 +1,8 @@
+{
+    "compilerOptions": {
+        "module": "ESNext",
+        "declaration": true,
+        "outDir": "build",
+    },
+    "include": [ "./src/**/*.ts" ]
+}
\ No newline at end of file