how to map objects to other objects in javascript

One approach to map objects to other objects in JavaScript is through functional programming techniques. We can define a function that takes in an object and returns a new object with the transformed values. Here's an example:

index.tsx
const originalObject = { 
  firstName: 'John', 
  lastName: 'Doe', 
  age: 25 
};

const mapObject = obj => ({
  fullName: `${obj.firstName} ${obj.lastName}`,
  ageInDogYears: obj.age * 7
});

const transformedObject = mapObject(originalObject);

console.log(transformedObject);
// { fullName: 'John Doe', ageInDogYears: 175 }
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In the example above, we have an original object with properties firstName, lastName, and age. We also have a mapObject function that uses object destructuring to transform the values of the original object into a new object with properties fullName and ageInDogYears. We then call the mapObject function on the original object and store the result in transformedObject. The result is a new object with the transformed values.

This approach allows us to separate concerns and write easily testable code. It also allows us to create reusable mapping functions that can be used across multiple projects.