JavaScript development
Plenty of useful software is written in plain JavaScript. We maintain it, extend it and, where it helps, move it to TypeScript step by step.
console.log("Hello, Paris");How we use JavaScript
Many products start as a quick JavaScript prototype that turns into a business. We work with those codebases without judgement: we add tests around the parts that earn money first, update dependencies with known vulnerabilities, and introduce type checking through JSDoc before any file is renamed. We also write lightweight scripts for build pipelines, store listing automation and data clean-up jobs, where a small Node.js script is simpler than a full service.
What we build with JavaScript
- Maintenance of existing JavaScript front ends and Node.js services
- Dependency and security updates
- Progressive migration to TypeScript
- Automation scripts for builds and releases
- Performance profiling in the browser
Questions about JavaScript
Our JavaScript app has no tests. Where do you start?
With end-to-end tests on the most important user journeys. They protect revenue while we refactor the code underneath.
Will you insist on rewriting everything?
No. We recommend changes that reduce risk or cost, and we show the reasoning before any larger work is proposed.
Discuss a JavaScript project
We reply from [email protected]. Send any documents to that address after your first message.