feat: handle invalid strategy

Author: Pooya Parsa

lib/core/auth.js

@@ -35,6 +35,16 @@ export default class Auth {
     // Restore strategy
     this.$storage.syncUniversal('strategy', this.options.defaultStrategy)
 
+    // Set default strategy if current one is invalid
+    if (!this.strategy) {
+      this.$storage.setUniversal('strategy', this.options.defaultStrategy)
+
+      // Give up if still invalid
+      if (!this.strategy) {
+        return Promise.resolve()
+      }
+    }
+
     // Call mounted for active strategy on initial load
     return this.mounted()
   }