Ich erhalte die Warnung, dass ein erstelltes Versprechen von Bluebird nicht zurückgegeben wird, und ich verstehe nicht, warum und wie ich meinen Code umschreiben soll.

(Ich habe versucht, über die Warnung bei @ zu lesBluebird API Seite und das Anti-Pattern-Seite wie ich vermute das ist was ich tue)

In meiner view.js Datei:

var express = require('express'),
    router = express.Router(),
    settings = myReq('config/settings'),
    Sets = myReq('lib/Sets'),
    log = myReq('lib/utils').getLogger('View');

router.get('/:setId/', function(req, res, next) {
    var
        setId = req.params.setId,  
        user = req.user,
        set = new Sets(setId, user);

    log.info('Got a request for set: ' + setId);

    // The below line gives the warning mentioned
    set.getSet().then(function(output) {
        res.send(output);

    }).error(function(e){
        log.error(e.message, e.data);
        res.send('An error occurred while handling set:' + e.message);
    });

});

module.exports = router;

In meiner Sets.js-Datei habe ich:

var
    Promise = require('bluebird'),
    OE = Promise.OperationalError,
    settings = myReq('config/settings'),
    UserData = myReq('lib/userData'),
    log = myReq('lib/utils').getLogger('sets'),
    errorToSend = false;

module.exports = function(setId, user) {
    var 
        sets = myReq('lib/utils').getDb('sets');

    return {

        getSet : function() {

            log.debug('Getting set')

            return sets.findOneAsync({
                setId:setId
            }).then(function(set){
                if ( set ) {
                    log.debug('got set from DB');
                } else {
                    set = getStaticSet(setId);
                    if ( ! set ) {
                        throw new OE('Failed getting db records or static template for set: ' + setId );
                    }
                    log.debug('got static set');
                }

                log.debug('I am handling set')

                if ( ! checkSet(set) ) {
                    var e = new OE('Failed checking set');
                    e.data = set;
                    throw e;
                }

                return {
                    view : getView(set),
                    logic : set.logic,
                    canEdit : true,
                    error : errorToSend
                };

            });
        }
    };
};

So gibt die Zeile in meiner view.js-Datei mit "set.getSet ()" die Warnung darüber aus, dass das erstellte Versprechen nicht zurückgegeben wird. Es scheint, als ob dieses Skript immer noch das tut, was ich von ihm erwarte, aber ich verstehe nicht, warum ich die Warnung erhalte.

Stacktrace:

Warning: a promise was created in a handler but was not returned from it
    at Object.getSet (C:\dev\infoscrn\lib\Sets.js:36:25)
    at C:\dev\infoscrn\routes\view.js:39:20
    at Layer.handle [as handle_request] (C:\dev\infoscrn\node_modules\express\lib\router\layer.js:82:5)
    at next (C:\dev\infoscrn\node_modules\express\lib\router\route.js:110:13)
    at Route.dispatch (C:\dev\infoscrn\node_modules\express\lib\router\route.js:91:3)
    at Layer.handle [as handle_request] (C:\dev\infoscrn\node_modules\express\lib\router\layer.js:82:5)
    at C:\dev\infoscrn\node_modules\express\lib\router\index.js:267:22
    at param (C:\dev\infoscrn\node_modules\express\lib\router\index.js:340:14)
    at param (C:\dev\infoscrn\node_modules\express\lib\router\index.js:356:14)
    at Function.proto.process_params (C:\dev\infoscrn\node_modules\express\lib\router\index.js:400:3)
    at next (C:\dev\infoscrn\node_modules\express\lib\router\index.js:261:10)
    at Function.proto.handle (C:\dev\infoscrn\node_modules\express\lib\router\index.js:166:3)
    at router (C:\dev\infoscrn\node_modules\express\lib\router\index.js:35:12)
    at Layer.handle [as handle_request] (C:\dev\infoscrn\node_modules\express\lib\router\layer.js:82:5)
    at trim_prefix (C:\dev\infoscrn\node_modules\express\lib\router\index.js:302:13)
    at C:\dev\infoscrn\node_modules\express\lib\router\index.js:270:7
    at Function.proto.process_params (C:\dev\infoscrn\node_modules\express\lib\router\index.js:321:12)
    at next (C:\dev\infoscrn\node_modules\express\lib\router\index.js:261:10)
    at C:\dev\infoscrn\node_modules\express\lib\router\index.js:603:15
    at next (C:\dev\infoscrn\node_modules\express\lib\router\index.js:246:14)