TypeScript

TypeScript is JavaScript with types. It catches many mistakes while code is being written instead of when users find them, and it makes large codebases easier to understand and change. It compiles to plain JavaScript, so it runs anywhere JavaScript runs.

How we use TypeScript

• Writing React, Next.js and React Native applications in TypeScript by default.
• Building Node.js APIs and services with typed data models.
• Sharing types between front end and back end so changes are caught everywhere at once.
• Gradually converting existing JavaScript projects to TypeScript.

When TypeScript is the right choice

TypeScript pays off on any project that will grow or be maintained for years, or where several developers work together. For very small scripts or quick prototypes plain JavaScript can be enough, but for client products we use TypeScript almost always.

Related: React development, JavaScript, Node.js. Talk to our team about your project.

Frequently asked questions

Does TypeScript make development slower?

There is a little extra effort writing types, but it is usually repaid quickly through fewer bugs, safer changes and better editor help, especially as projects grow.

Can existing JavaScript code use TypeScript?

Yes. TypeScript can be added gradually, file by file, so an existing project improves without a risky rewrite.

Do you use TypeScript on the back end too?

Yes. Our Node.js services are written in TypeScript, and sharing type definitions with the front end means a change to an API is caught everywhere it is used.