How to get the variable set inside module.exports

[karthik22061993]

I am using cypress framework to test node app. I want to check variable is set to 'SUCCESS'. Intially it is set to 'FAILURE' but from cypress exec it is set to 'SUCCESS'. But when I invoke the function it is still 'FAILURE'. Can someone help me understand where I made it wrong. I will be using similiar logic to login to portal. Please let me know If more details are needed. I have tried demo my idea via code snippet below.

**cypress\support\returnStatus.js**

module.exports = function() {

    this.returnStatus = "FAILURE";

   this.SuccessMsg =  function() {
	  cy.exec('echo hello',  { log: true, failOnNonZeroExit: false }).then(() => {
                    this.returnValue = "SUCCESS";
           });
   }
}

**cypress\integration\checkReturnValue.spec.js**

const helper = require('../support/returnStatus');

describe("Check return value", function(){
    it("should check latest value", function(){
        let reply =  helper.SuccessMsg();
        console.log(reply);//still it prints /*FAILURE*/
        
    })
});

[bahmutov]

The commands are asynchronous. If you want to return a value you would do

this.SuccessMsg =  function() {
	  return cy.exec('echo hello',  { log: true, failOnNonZeroExit: false }).then(() => {
                   return 'success'
           });
   }

// from your test
helper.SuccessMsg().then(result => {
  console.log(result) // prints "success"
})