Why is TypeScript needed? What problem does it solve in projects?

TypeScript is used to add static typing to JavaScript projects. It helps:

• Detect errors early during compilation rather than at runtime.
• Improve code readability and maintainability through explicit types.
• Enable autocomplete and refactoring in IDEs.
• Facilitate teamwork, as types serve as documentation.

The problem that TypeScript addresses is the lack of strict typing in JavaScript, which can lead to errors that are difficult to track in large projects. TypeScript helps make the code more reliable and predictable.