call-me-maybe

Let your JS API users either give you a callback or receive a promise.

varmaybe=require("call-me-maybe")module.exports=functionasyncFunc(cb){returnmaybe(cb,newPromise(function(resolve,reject){// ...}))}

If the callback cb is truthy, returns undefined and will call cb when promise is settled. The parameters passed to cb are standard error-first:

• If promise is fulfilled, then it is called with the result of the promise: cb(null, result)
• If promise is rejected, then it is called with the rejection error: cb(err)

If cb is falsey, then promise is returned.