Documentation not up to date (node-qrcode)

[ghost]

// Use the node-qrcode package
// npm install --save node-qrcode
var QRCode = require('qrcode');

// Get the data URL of the authenticator URL
QRCode.toDataURL(secret.otpauth_url, function(err, data_url) {
  console.log(data_url);

  // Display this data URL to the user in an <img> tag
  // Example:
  write('<img src="' + data_url + '">');
});

The node-qrcode package is now installed with npm install --save qrcode, node-qrcode points to a different package now.

https://github.com/soldair/node-qrcode