pretty sure they're part of ES6 spec[0]. If you're using a 3rd part library that supports callbacks only that sounds more like a choice rather than a limitation

pretty sure they're part of ES6 spec[0]. If you're using a 3rd part library that supports callbacks only that sounds more like a choice rather than a limitation with Node. [0] http://www.ecma-international.org/ecma-262/6.0/#sec-promise-constructor http://www.ecma-international.org/ecma-262/6.0/#sec-promise-...