[NodeJS] Integer value changed to decimal in the auto-generated spec

[wing328]

Description

For details, please refer to #4648 (review)

Likely the issue also impacts other server stub generators that generate the spec (yaml) as part of the code generation.

Swagger-codegen version

Latest master

Swagger declaration file content or url

petstore.yaml in the project

Command line used for generation

./bin/nodejs-petstore-server.sh

Steps to reproduce

./bin/nodejs-petstore-server.sh

Related issues

#4648

Suggest a Fix

My guess is that the issue is with the parser (as it's working fine before)