I am using this Neo4J library and I would like to use promises instead. So I tried using bluebird's promisify. I created the following code...

    var db = new neo4j.GraphDatabase('....'),
        Promise = require('bluebird'),
        Cypher = Promise.promisify(db.cypher);

    var query = [
        'MATCH (node)',
        'OPTIONAL MATCH (node)-[rel]->( )',
        'RETURN DISTINCT node as node, collect(rel) as links'
    ].join('\n');

    var i = 0
    var onSuccess = function (results) {
            res.json(parseGraphResponse(results));
        },
        onFail = function (err) {
            console.log("Error " + err);
        };
    Cypher({
        query: query
    }).then(onSuccess).catch(onFail);

However, now I get the following error that is captured onError...

TypeError: Object # has no method 'http'

This version works fine...

    db.cypher({
        query: query
    }, function (err, results) {
        if (err) {
            console.log("Error " + err);
            return;
        }
        res.json(parseGraphResponse(results));
    });

A little more investigation shows that it is blowing up on this code...

GraphDatabase.prototype.cypher = function(opts, cb, _tx) {
  ...
  // Blows up here....
  return this.http({
        method: method,
        path: path,
        headers: headers,
        body: body,
        raw: true
      }, (function(_this) {
        return function(err, resp) {
          ...
        }
      })
}