const crypto = require('crypto');
const assert = require('assert');

const data = Buffer.from('hello');
const { privateKey } = crypto.generateKeyPairSync('ed25519');
const signature = crypto.sign(null, data, privateKey);

assert(crypto.verify(null, data, privateKey, signature)); // OK

crypto.verify(null, data, privateKey, signature, (err, verified) => { // 💥
  assert(!err);
  assert(verified);
});
// node[49326]: ../src/crypto/crypto_sig.cc:850:static bool node::crypto::SignTraits::DeriveBits(node::Environment *, const node::crypto::SignConfiguration &, node::crypto::ByteSource *): Assertion `(params.key->GetKeyType()) == (kKeyTypePublic)' failed.

const crypto = require('crypto');
const assert = require('assert');

const data = Buffer.from('hello');
const { privateKey } = crypto.generateKeyPairSync('ed25519');
const signature = crypto.sign(null, data, privateKey);

assert(crypto.verify(null, data, privateKey, signature)); // OK

crypto.verify(null, data, privateKey, signature, (err, verified) => {
  assert(!err);
  assert(verified); // OK
});