steer.js
function createProfile(done) {
            if (self.closed) return done(null);

            temp.mkdir('browser-controller', function(err, dirpath) {
                if (err) return done(err);

                self.userDir = dirpath;

                done(null);
            });
        }
function createProfile(done) {
            if (self.closed) return done(null);

            temp.mkdir('browser-controller', function(err, dirpath) {
                if (err) return done(err);

                self.userDir = dirpath;

                done(null);
            });
        }
function createProfile ( done ) { if ( self . closed ) return done ( null ) ; temp . mkdir ( 'browser-controller' , function ( err , dirpath ) { if ( err ) return done ( err ) ; self . userDir = dirpath ; done ( null ) ; } ) ; }
create a chrome profile directory
create a chrome profile directory