How to display nodejs raw Buffer data as Hex string

Question

The following code uses SerialPort module to listen to data from a bluetooth connection.

I am expecting to see a stream of data in Hexadecimal format printed in cons

Answer 1

Top answer is the simplest way to do it.

An alternative method:

data = Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);

Array.prototype.map.call(new Uint8Array(data),
               x => ('00' + x.toString(16)).slice(-2))
        .join('').match(/[a-fA-F0-9]{2}/g).reverse().join('');

Answer 2

This code will show the data buffer as a hex string:

buff.toString('hex');