SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

```
  symbol: class FlipperReceiver
/Users/Stephano/Development/code/app/euclid/node_modules/react-native-flipper/android/src/main/java/com/facebook/flipper/reactnative/FlipperReactNativeJavaScriptReceiver.java:34: error: cannot find symbol
  public void onReceive(FlipperObject params, FlipperResponder responder) {
                        ^
```