Feature(langauge): Make client history language aware

Remove need for language aware links

client/use-lang-routes.js

@@ -0,0 +1,44 @@
+import { addLang, getLangFromPath } from '../common/app/utils/lang.js';
+
+function addLangToLocation(location, lang) {
+  if (!location) {
+    return location;
+  }
+  if (typeof location === 'string') {
+    return addLang(location, lang);
+  }
+  return {
+    ...location,
+    pathname: addLang(location.pathname, lang)
+  };
+}
+
+function getLangFromLocation(location) {
+  if (!location) {
+    return location;
+  }
+  if (typeof location === 'string') {
+    return getLangFromPath(location);
+  }
+  return getLangFromPath(location.pathname);
+}
+
+export default function useLangRoutes(createHistory) {
+  return (options = {}) => {
+    let lang = 'en';
+    const history = createHistory(options);
+    const unsubscribeFromHistory = history.listen(nextLocation => {
+      lang = getLangFromLocation(nextLocation);
+    });
+    const push = location => history.push(addLangToLocation(location, lang));
+    const replace = location => history.replace(
+      addLangToLocation(location, lang)
+    );
+    return {
+      ...history,
+      push,
+      replace,
+      unsubscribe() { unsubscribeFromHistory(); }
+    };
+  };
+}