types: fix resolvedLanguage type (#1960)

`resolvedLanguage` can be unset if i18next is initialized in `cimode` and `dev` https://github.com/i18next/i18next/blob/e240c0eb29b5e118df174c6ba863a570e56fa859/src/i18next.js#L306
i18next · May 12, 2023 · 566ef74 · 566ef74
1 parent e240c0e
commit 566ef74
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/index.d.ts b/index.d.ts
@@ -1316,7 +1316,7 @@ export interface i18n {
    * Is set to the current resolved language.
    * It can be used as primary used language, for example in a language switcher.
    */
-  resolvedLanguage: string;
+  resolvedLanguage?: string;
 
   /**
    * Loads additional namespaces not defined in init options.