A React Native JS library to enable easy communication with TAPSIGNER^™ and SATSCARD^™.

-==[Request card development samples here]==-

See the python library by Coinkite for protocol specifications.

yarn add coinkite-tap-protocol

This library uses a few node core modules like secp256k1, buffer, crypto etc. which react native doesn't support because they probably use C++ code bundled with the Node JS binary, not Javascript.

We suggest using rn-nodify to enable using node core modules after yarn add coinkite-tap-protocol

rn-nodify needs stream-browserify for browser support.

metro.cofig.js

...
resolver: {
    extraNodeModules: {
      stream: require.resolve('stream-browserify'),
    },
  },
transformer: {
    ...
  },
...

react-native-nfc-manager is used for the NFC communications with the cards. Please refer to their docs for nfc integration.

1. add the post install script in your package.json "postinstall": "rn-nodeify --install fs,dgram,process,path,console,crypto --hack"

2. install the required modules yarn add coinkite-tap-protocol rn-nodify stream-browserify react-native-nfc-manager

3. update metro config resolver

extraNodeModules: {
    stream: require.resolve('stream-browserify'),
}

4. install respoective cocopod dependencies cd ios && pod install