fix: rerender i18n in host components on lang change (#6224)

src/excalidraw-app/components/AppWelcomeScreen.tsx

@@ -1,12 +1,13 @@
 import React from "react";
 import { PlusPromoIcon } from "../../components/icons";
-import { t } from "../../i18n";
+import { useI18n } from "../../i18n";
 import { WelcomeScreen } from "../../packages/excalidraw/index";
 import { isExcalidrawPlusSignedUser } from "../app_constants";
 
 export const AppWelcomeScreen: React.FC<{
   setCollabDialogShown: (toggle: boolean) => any;
 }> = React.memo((props) => {
+  const { t } = useI18n();
   let headingContent;
 
   if (isExcalidrawPlusSignedUser) {

src/excalidraw-app/components/EncryptedIcon.tsx

@@ -1,17 +1,21 @@
 import { shield } from "../../components/icons";
 import { Tooltip } from "../../components/Tooltip";
-import { t } from "../../i18n";
+import { useI18n } from "../../i18n";
 
-export const EncryptedIcon = () => (
-  <a
-    className="encrypted-icon tooltip"
-    href="https://blog.excalidraw.com/end-to-end-encryption/"
-    target="_blank"
-    rel="noopener noreferrer"
-    aria-label={t("encrypted.link")}
-  >
-    <Tooltip label={t("encrypted.tooltip")} long={true}>
-      {shield}
-    </Tooltip>
-  </a>
-);
+export const EncryptedIcon = () => {
+  const { t } = useI18n();
+
+  return (
+    <a
+      className="encrypted-icon tooltip"
+      href="https://blog.excalidraw.com/end-to-end-encryption/"
+      target="_blank"
+      rel="noopener noreferrer"
+      aria-label={t("encrypted.link")}
+    >
+      <Tooltip label={t("encrypted.tooltip")} long={true}>
+        {shield}
+      </Tooltip>
+    </a>
+  );
+};

src/excalidraw-app/components/ExportToExcalidrawPlus.tsx

@@ -6,7 +6,7 @@ import { loadFirebaseStorage, saveFilesToFirebase } from "../data/firebase";
 import { FileId, NonDeletedExcalidrawElement } from "../../element/types";
 import { AppState, BinaryFileData, BinaryFiles } from "../../types";
 import { nanoid } from "nanoid";
-import { t } from "../../i18n";
+import { useI18n } from "../../i18n";
 import { excalidrawPlusIcon } from "./icons";
 import { encryptData, generateEncryptionKey } from "../../data/encryption";
 import { isInitializedImageElement } from "../../element/typeChecks";
@@ -79,6 +79,7 @@ export const ExportToExcalidrawPlus: React.FC<{
   files: BinaryFiles;
   onError: (error: Error) => void;
 }> = ({ elements, appState, files, onError }) => {
+  const { t } = useI18n();
   return (
     <Card color="primary">
       <div className="Card-icon">{excalidrawPlusIcon}</div>

src/excalidraw-app/components/LanguageList.tsx

@@ -1,22 +1,23 @@
-import { useAtom } from "jotai";
+import { useSetAtom } from "jotai";
 import React from "react";
-import { langCodeAtom } from "..";
-import * as i18n from "../../i18n";
+import { appLangCodeAtom } from "..";
+import { defaultLang, useI18n } from "../../i18n";
 import { languages } from "../../i18n";
 
 export const LanguageList = ({ style }: { style?: React.CSSProperties }) => {
-  const [langCode, setLangCode] = useAtom(langCodeAtom);
+  const { t, langCode } = useI18n();
+  const setLangCode = useSetAtom(appLangCodeAtom);
 
   return (
     <select
       className="dropdown-select dropdown-select__language"
       onChange={({ target }) => setLangCode(target.value)}
       value={langCode}
-      aria-label={i18n.t("buttons.selectLanguage")}
+      aria-label={t("buttons.selectLanguage")}
       style={style}
     >
-      <option key={i18n.defaultLang.code} value={i18n.defaultLang.code}>
-        {i18n.defaultLang.label}
+      <option key={defaultLang.code} value={defaultLang.code}>
+        {defaultLang.label}
       </option>
       {languages.map((lang) => (
         <option key={lang.code} value={lang.code}>