I am new to cypress+TS. Not able to return a value inside the each loop in Cypress with Typescript

Not able to return a value inside each loop in Cypress with Typescript. patientBalance value is undefined.

Main class code

let patientBalance: number = getPatientBalance(claimNumber);

Function as below:

let amountInDollar1: string[];
let amount1: number;
export let getPatientBalance = (claimNumber: string) => {
  getClaimNumberCells().each((input, index) => {
    const claimText = input.text();
    getChargesTable().scrollTo('right');
    if (claimText.includes(claimNumber)) {
      getPatientBalanceCell()
        .eq(index)
        .each((data) => {
          amountInDollar1 = data.text().split('$');
          amount1 = parseFloat(amountInDollar[1]);
          console.log('Amount in loop', +amount1);
        });
    }
  });
  return amount1;
};

Also, I want to use this patientBalance at multiple points throughout the test. How can I assign this value to a variable?

The .each() command is asynchronous, so you can't return synchronously as you have tried to do.

I think adding some .then() calls should do what you want to do:

export let getPatientBalance = (claimNumber: string) => {

  getClaimNumberCells().each((input, index) => {
    // calculate
  })

  return cy.then(() => {  // returning the cy.then() ensures async completed

    // option 1 - put value in an alias for multiple use in same test
    cy.wrap(amount1).as('oldPatientBalance')  // an alias stores the value 

    // option 2 - put value in an env variable for use across multiple tests
    Cypress.env('oldPatientBalance', amount1)

    // option 3 - return the value directly 
    return amount1                            // or direct return of value
  })
})

// In test(s) 

// option 3 -  use the returned value
getClaimNumberCells().then(amount1 => {   
  // use it here
})

// option 1 - take the value from the alias later in the same test
cy.get('@oldPatientBalance').then(oldPatientBalance => {
  console.log('oldPatientBalance', oldPatientBalance);
}

// option 2 - should be accessible in other tests (not same test)
it('another test for where amount is calculated', () => {
  const oldPatientBalance = Cypress.env('oldPatientBalance')
})