Reading ByteArray (raw bytes) directly from file

Hi, I'm uploading media files (images, wav files) from my phone to S3 bucket. To upload, I'll need the Byte array. Currently I'm reading in base64, and then decode it back to byteArray and then finally uploading it.

Currently, I'm doing the following,

```
let base64Data = await RNFS.readFile(fPath, 'base64');
const arrayBuffer = AWS.util.base64.decode(base64Data)

```
I'm trying to find a way to avoid the base64.decode() operation.

The Documentation says,

`encoding can be one of utf8 (default), ascii, base64. Use base64 for reading binary files.`

**Question:** Is there a way to directly read raw bytes from the file?

Thank you.