Tell us about working with forms and validation in your project — what were the challenging tasks?

Working with forms and validation often involves several important aspects:

• Managing form state (values, errors, touched/untouched).
• Synchronizing form data with the model.
• Asynchronous validation (e.g., checking login uniqueness via API).
• Custom validators for specific rules.
• Error handling and displaying messages to the user.

Complex tasks may be related to:

• Validating dynamically added fields (e.g., in lists or tables).
• Integrating with external services for data verification.
• Optimizing performance for large and complex forms.
• Ensuring a user-friendly UX with multiple errors and nested forms.

For example, in a project, there was a task to implement a form with a dynamic number of nested fields, where each field required a unique server-side check. This required implementing asynchronous validators with debounce to avoid overloading the server with requests on each input.