Stitching React Native streaming data back together

I'm using the react-native-live-audio-stream package to record.

I followed the instructions for in the npm

// yarn add buffer
import { Buffer } from 'buffer';
  ...
LiveAudioStream.on('data', data => {
  var chunk = Buffer.from(data, 'base64');
});

For now... all I want to do is save everything until the end, save it to a file, and convert it back into readable audio.

Can anyone help me with this?

My init is as follows:

        LiveAudioStream.init({
          wavFile: 'audio.wav',
          sampleRate: 32000, // default is 44100 but 32000 is adequate for accurate voice recognition
          channels: 1, // 1 or 2, default 1
          bitsPerSample: 16, // 8 or 16, default 16
          // For audioSource values see:
          // https://developer.android.com/reference/android/media/MediaRecorder.AudioSource
          audioSource: 1, // 1: MIC audio source for Android
          bufferSize: 4096, // default is 2048
        });

I have looked up every stack overflow and reddit about it but no one gives conclusive answers... just stuff like this

Thanks in advance!