node js + decode to base 64 code example

Example 1: buffer from base64

const b64string = /* whatever */;
const buf = Buffer.from(b64string, 'base64');

Example 2: Encoding and Decoding Base64 Strings in Node.js

'use strict';

let data = 'stackabuse.com';
let buff = new Buffer(data);
let base64data = buff.toString('base64');

console.log('"' + data + '" converted to Base64 is "' + base64data + '"');