Thrown error in promisified ExpressJs function

javascript node.js express bluebird

This has nothing to do with promises, it's just basic javascript: you are calling listen as if it was a function but it's a method of app.

Some options:

Promise.promisifyAll(app);// Note how it's called as a method on appapp.listenAsync(...).then(....)

// Bind the function as a method of appvar appListenAsync = Promise.promisify(app.listen, app);appListenAsync(...).then(....)

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