Specific Error Catch in BlueBird promise

Question

I am using bluebird promise and standard-error. Issue is when i throw error like this

   return new PromiseReturns(function (resolve, reject) {
        reject(new StandardError({
        status: 'Error',
        message: "Not Found",
        originalError: err,
        code: 404
       }));
    });

it doesn't recieved in this catch

.catch(StandardError , function(err){
 })

instead its recieved in

.catch(function(err){
})

Answer 1

Create new PromiseReturns each time was causing the issue. I have bundled all my code in one single promise and that worked.

for example:

       function requestFromController(body){

           return new PromiseReturns(function (resolve, reject) {
                if(body){
                   reject(new StandardError({
                        status: 'Error',
                        message: "Not Found",
                        originalError: err,
                        code: 404
                    }));
                }

                db.model.find().then(x => {
                    resolve(x);
                })
          });
   }