There is a popular form used in 5 different places in the project, but each use has slight differences. How would you design such a component?

To design a form that is used in multiple places with slight variations, I would apply a component-based design approach with configurability:

• Create a base form component with common logic and layout.
• Use props or parameters to customize the differing parts (e.g., set of fields, validation, styles).
• If necessary, extract separate subcomponents for repetitive elements.
• You can apply the "composition" pattern: the base component accepts child elements or functions for customization.
• Provide good documentation and tests to ensure correctness in different usage scenarios.

This approach will allow code reuse, reduce duplication, and simplify maintenance.