Classes and interfaces
TypeScript offers better control over modules through namespaces, allowing for more organized and manageable code structures.
On the other hand, TypeScript works best for larger, more complex projects that require more code organization and security. The static typing, interfaces, classes, and other functionalities available in TypeScript can provide significant benefits regarding code scalability and maintenance.
For example, we can start by introducing TypeScript to key parts of the application that need more type safety and better tooling support, such as intelligent completion or code refactoring. Then, as the team becomes more familiar with TypeScript, it can be deployed to other application parts.
One of the strengths of this approach is that it enables teams to take advantage of the TypeScript benefits while minimizing the risks associated with large, one-time code changes. This is particularly valuable in projects already underway and could benefit from the additional advantages of using TS. Automated tests give more freedom when it comes to refactoring, as they minimize the possibility of regressions after changes are made. For this reason, having as high a percentage of test coverage as possible before refactoring is a good idea.