refactor: ♻️ refactor isHosted && type clean up (#3290)

* refactor: ♻️ refactor isHosted && type clean up

Change-Id: I4dfbad8a07607432801de78920ce42bf81e46498

* refactor: ♻️ code clean up

Change-Id: I8f487a33d332a2acaff84397a97371b56ace28a1

* feat: 💄 lint

Change-Id: I776b1a5e249bdb542f8e6da7cb2277821cf91094

* feat: ✨ ci type

Change-Id: I486dde7bf60321238e9a394c40ad8cdb8bfc54c8

* feat: some code sugession

Change-Id: I4761d057344b95a98e99068d312a42292977875b

app/scenes/Settings/Notifications.tsx

@@ -13,6 +13,7 @@ import env from "~/env";
 import useCurrentUser from "~/hooks/useCurrentUser";
 import useStores from "~/hooks/useStores";
 import useToasts from "~/hooks/useToasts";
+import isHosted from "~/utils/isHosted";
 import SettingRow from "./components/SettingRow";
 
 function Notifications() {
@@ -47,7 +48,7 @@ function Notifications() {
       separator: true,
     },
     {
-      visible: env.DEPLOYMENT === "hosted",
+      visible: isHosted,
       event: "emails.onboarding",
       title: t("Getting started"),
       description: t(
@@ -55,7 +56,7 @@ function Notifications() {
       ),
     },
     {
-      visible: env.DEPLOYMENT === "hosted",
+      visible: isHosted,
       event: "emails.features",
       title: t("New features"),
       description: t("Receive an email when new features of note are added"),