javascript - Having a fixed response structure with node.js and Express -

we have started using node.js our api server instead of java. apart things node.js provides, 1 thing miss having proper response object api.

since javascript being dynamically typed languages, objects can created on fly while returning response. in contrast java, can have class , instance of serialized in response. can anytime lookup class determine response of api be.

is there such design pattern in node.js / javascript. our api's have strict conformance such templated object.

you can make them yourself.

if you're using es6 example, can have various error , response modules, , perform own validation in class creates responses.

for example,

// sample-response.js  class sampleresponse {   constructor(message) {     // validate `message` somehow      this.data = message   } }  module.exports = {   sampleresponse } 

then you're structuring http interface, can send whichever response you'd (for example, express):

res.send(new sampleresponse(message)) 

same goes errors, etc. you're not limited lack of types javascript, have enforce things differently.

if you're not using es6, can this:

module.exports = {   sampleresponse: function(message) {     // validation      return { data: message }; // or whatever want   } };