For frontend they use TypeScript: https://www.palantir.com/2013/12/announcing-three-open-source-projects-for-developing-with-typescript/ https://www.palantir.co

For frontend they use TypeScript: https://www.palantir.com/2013/12/announcing-three-open-source-projects-for-developing-with-typescript/ https://www.palantir.com/2013/12/announcing-three-open-sourc...