Have you used only TypeScript language in your projects?

In my projects, I used TypeScript as the main language, but not exclusively. TypeScript is excellent for Node.js due to static typing and improved IDE support, which enhances code quality and reduces errors.

However, I sometimes combined TypeScript with JavaScript, for example:

• For rapid prototyping
• When using libraries or tools that do not have type definitions

This approach allows balancing between development speed and code reliability.