From bbd738f572def6e4602794cf23820a0aad80983f Mon Sep 17 00:00:00 2001
From: teidesu <86301490+teidesu@users.noreply.github.com>
Date: Mon, 12 Sep 2022 15:34:30 +0300
Subject: [PATCH] feat(i18n): added OtherLanguageWrapExhaustive for exhaustive
 other languages

---
 packages/i18n/src/types.ts   | 14 ++++++++++++++
 packages/i18n/tests/types.ts |  7 +++++--
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/packages/i18n/src/types.ts b/packages/i18n/src/types.ts
index 464a1301..c460fb2f 100644
--- a/packages/i18n/src/types.ts
+++ b/packages/i18n/src/types.ts
@@ -68,3 +68,17 @@ export type OtherLanguageWrap<Strings> = {
         ? OtherLanguageWrap<Strings[key]>
         : never
 }
+/**
+ * Wrapper type for i18n object containing strings for a language
+ * other than the primary one. Used to provide type safety.
+ *
+ * Unlike {@link OtherLanguageWrap}, this type requires all strings
+ * from the primary language to be present
+ */
+export type OtherLanguageWrapExhaustive<Strings> = {
+    [key in keyof Strings]: Strings[key] extends I18nValue<infer A>
+        ? I18nValue<A>
+        : Strings[key] extends Record<string, any>
+        ? OtherLanguageWrapExhaustive<Strings[key]>
+        : never
+}
diff --git a/packages/i18n/tests/types.ts b/packages/i18n/tests/types.ts
index 56d16b3e..0893d116 100644
--- a/packages/i18n/tests/types.ts
+++ b/packages/i18n/tests/types.ts
@@ -3,8 +3,11 @@
 // This file is never executed, only compiled
 
 import { Message } from '@mtcute/client'
-import { createMtcuteI18n } from '../src'
-import { OtherLanguageWrap } from '../src/types'
+import {
+    createMtcuteI18n,
+    OtherLanguageWrapExhaustive,
+    OtherLanguageWrap,
+} from '../src'
 
 const en = {
     basic: {