Bluebird warning about promises

[vcarel]

I'm getting a warning from Bluebird (the Promise lib) every time I use a Promise, e.g.:

Warning: a promise was created in a  handler but was not returned from it
    at EventLoop.done (/home/me/src/myproject/node_modules/zombie/lib/eventloop.js:589:11)
    at EventLoop.g (events.js:260:16)
    at emitNone (events.js:72:20)
    at EventLoop.emit (events.js:166:7)
    at Immediate._onImmediate (/home/me/src/myproject/node_modules/zombie/lib/eventloop.js:688:71)
    at processImmediate [as _immediateCallback] (timers.js:383:17)
From previous event:
    at Browser.wait (/home/me/src/myproject/node_modules/zombie/lib/index.js:341:145)
    at lazyResolve (/home/me/src/myproject/node_modules/zombie/lib/index.js:390:40)
    at Object.then (/home/me/src/myproject/node_modules/zombie/lib/index.js:397:18)
From previous event:
    at Object.then (/home/me/src/myproject/node_modules/zombie/lib/index.js:397:32)

FYI, this is in a callback of a React JS application. So I don't want to return the Promise... React wouldn't do anything with it. I don't know what Bluebird expects, but I don't want to put a workaround of any kind in my app code.

Is there a clean way to get rid of this warning ?

PS: BTW, Bluebird does a lot more that the Promise API: https://developer.mozilla.org/en-US/docs/Mozilla/JavaScript_code_modules/Promise.jsm/Promise
Is using Bluebird really necessary? Why not just using a polyfill like https://github.com/taylorhakes/promise-polyfill ?

[assaf]

There's no need for a polyfill, Node 4.x supports promises natively. Bluebird is only used in specific places where it adds value, like for browser.wait. You can turn off warnings, check the Bluebird documentation.

[vcarel]

Thanks & sorry for the late reply.
So I added the code snippet below at it worked.

const Bluebird = require('bluebird');
Bluebird.config({
     warnings: false,
});

FYI I found that in petkaantonov/bluebird#482

You can close the issue.