To prevent exposing sensitive information from our database, we serialize the response in NestJS before sending it to users, ensuring only necessary data is shared.
Serialization can be implemented simply by defining a class with a constructor where we specify which properties of the fetched data we want to expose while excluding sensitive ones.
By using 'class-transformer,' we simplify serialization in NestJS, as it transforms regular objects into class instances without needing to manually handle each data mapping.
Implementing serialization not only enhances security by obscuring sensitive data but also improves user experience by presenting well-structured data that’s easy to understand.
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