Have you worked with Legacy code?

Yes, working with Legacy code is a common practice. Legacy code is existing code that may be poorly documented, have outdated technologies or architecture.

When working with such code, it is important to:

• Understand the logic and architecture, often through reading and debugging.
• Gradually cover the code with tests to safely make changes.
• Refactor in parts, improving readability and maintainability.

For example, when adding new functionality to an outdated frontend project, you can first write unit tests for existing components, then carefully implement changes to minimize the risk of breaking.