Takes a native javascript promise and returns a Q promise

pq.js

const Q = require('q');

/**
 * Transforms a Promise to a Q promise
 * @param  {Promise} promise
 * @return {Q}
 */
function pq(promise) {
    const deferred = Q.defer();

    promise
        .then(function(result) {
            deferred.resolve(result);
        })
        .catch(function(error) {
            deferred.reject(error)
        })

    return deferred.promise;
}