# TypeScript development for software with fewer bugs and easier upkeep

> APPSOLN builds web apps and APIs in TypeScript, which catches many mistakes before the software ever reaches your users and makes it easier to maintain.

TypeScript is a safer version of JavaScript, the language of the web. It checks the code as it is written, so many common mistakes are caught before the software goes live.

## For small businesses

For a small business, TypeScript means fewer surprise bugs and lower maintenance costs, even if a different developer takes over later.

## For larger companies

For a large company, TypeScript makes big codebases easier for many developers to work on safely, and makes changes less risky.

## What we do

- Build new apps and APIs in TypeScript
- Convert existing JavaScript code to TypeScript step by step
- Share data definitions between the front end and back end
- Set up code checks that run automatically on every change

## A good fit for

- Any new web app or API
- Existing JavaScript projects that have become hard to change
- Teams where several developers work on the same code

## Works well with

- React
- Next.js
- Node.js
- PostgreSQL

## Common questions

### Does TypeScript make projects slower or more expensive?

Rarely. It adds a little effort up front and saves much more later by catching bugs early and making changes safer.

### Can you convert our JavaScript app?

Yes. We convert it gradually, file by file, so the app keeps working throughout.

## Related

- [Full-Stack Development](https://appsoln.com/services/full-stack-development/index.md): Need a web app, customer portal, or internal tool that fits how your business works? APPSOLN builds it end to end, connects it to the tools you already use, and hands it over ready to launch.
- [Hire a Full-Stack Developer](https://appsoln.com/hire/full-stack-developer/index.md): Hire APPSOLN as your full-stack developer. We build the screens, the back end, the database, and the connections to your tools, then test, launch, and host it.
- [Hire a Node.js Developer](https://appsoln.com/hire/nodejs-developer/index.md): Hire APPSOLN as your Node.js developer to build APIs, connect your business tools, and power the back end of your web app.

Canonical page: https://appsoln.com/technologies/typescript