test.js

var keygen = require('./src/ssh-keygen');

function runCallbackVersion(onDone) {
  console.log('[callback API] Generating key pair');

  keygen(
    {
      comment: 'john@doe.com',
      read: true,
      type: 'ed25519',
      destroy: true,
    },
    function (err, out) {
      if (err) {
        console.log('There was a problem:', err);
        process.exitCode = 1;
      } else {
        console.log('Done generating key pairs');
        console.log(out.key);
        console.log(out.pubKey);
      }
      onDone();
    },
  );
}

async function runPromiseVersion(onDone) {
  console.log('[promise API] Generating key pair');

  try {
    const out = await keygen({
      comment: 'john@doe.com',
      read: true,
      destroy: true,
    });

    console.log('Done generating key pairs');
    console.log(out.key);
    console.log(out.pubKey);
  } catch (err) {
    console.log('There was a problem:', err);
    process.exitCode = 2;
  } finally {
    onDone();
  }
}

runCallbackVersion(() => {
  runPromiseVersion(() => {});
});