borisyankov/DefinitelyTyped — pull request #3090 by sebastien-de-saint-florent (2014-11-03 22:09:19+00:00)
Title: Update Q.d.ts with optional onRejected parameter

Spread method does not require onRejected param.
From Q documentation:
function eventualAdd(a, b) {
return Q.spread([a, b], function (a, b) {
return a + b;
})
}