clerk sign in and sign up login setup

lib/auth.ts

@@ -0,0 +1,34 @@
+import * as SecureStore from "expo-secure-store";
+
+export interface TokenCache {
+  getToken: (key: string) => Promise<string | undefined | null>;
+  saveToken: (key: string, token: string) => Promise<void>;
+  clearToken?: (key: string) => void;
+}
+
+export const tokenCache = {
+  async getToken(key: string) {
+    try {
+      const item = await SecureStore.getItemAsync(key);
+      if (item) {
+        console.log(`${key} was used 🔐 \n`);
+      } else {
+        console.log("No values stored under key: " + key);
+      }
+      return item;
+    } catch (error) {
+      console.error("SecureStore get item error: ", error);
+      await SecureStore.deleteItemAsync(key);
+      return null;
+    }
+  },
+  async saveToken(key: string, value: string) {
+    try {
+      return SecureStore.setItemAsync(key, value);
+    } catch (err) {
+      console.error("TOKEN_CACHE: ", err);
+
+      return;
+    }
+  },
+};