Generate compressed and uncompressed bitcoin addresses from a private key with bitcore.

gistfile1.js

var bitcore = require("bitcore-lib");
var Buffer = require("buffer").Buffer;

var value = new Buffer.from("test", "utf8");

var hash = bitcore.crypto.Hash.sha256(value);

// Compressed Key (nu skool)
var bn = bitcore.crypto.BN.fromBuffer(hash);
var privateKey = new bitcore.PrivateKey(bn);
var wif = privateKey.toWIF();

// Uncompressed Key (old skool)
var privateKey2 = bitcore.PrivateKey.fromBuffer(hash);
var wif2 = privateKey2.toWIF();

var publicKey1 = new bitcore.PublicKey(privateKey);
var publicKey2 = new bitcore.PublicKey(privateKey2);

var addr1 = publicKey1.toAddress(); //compressed - 19eA3hUfKRt7aZymavdQFXg5EZ6KCVKxr8
var addr2 = publicKey2.toAddress(); //uncompressed - 1HKqKTMpBTZZ8H5zcqYEWYBaaWELrDEXeE

console.log('Compressed');
console.log('WIF: ' + wif);
console.log('Address: ' + addr1);
console.log('');
console.log('Uncompressed');
console.log('WIF: ' + wif2);
console.log('Address: ' + addr2);

Great example, thank you