I would like to add httpsProxyAgent to node-auth. Does the current implementation has option to add agent option to node-oauth.

This is what I would need...

var HttpsProxyAgent = require('https-proxy-agent');
if (process.env['https_proxy']) {
  httpsProxyAgent = new HttpsProxyAgent(process.env['https_proxy']);
}

Finally, set the httpsProxyAgent to the request options right before _executeRequest gets called like this:

options.agent = httpsProxyAgent