Note that the material of Part 9 has been moved to https://courses.mooc.fi/org/uh-cs/courses/full-stack-open-typescript
There are some notable changes in the content. If you have already started this part, and advanced beyond the first exercises, you may continue following the old material, it shall remain here until 1st May 2026.
This part is all about TypeScript: an open-source typed superset of JavaScript developed by Microsoft that compiles to plain JavaScript.
There are some notable changes in the content. If you have already started this part, and advanced beyond the first exercises, you may continue following the old material, it shall remain here until 1st May 2026.
In this part, we will be using the tools previously introduced to build end-to-end features to an existing ecosystem, with predefined linters and an existing codebase, while writing TypeScript. After doing this part, you should be able to understand, develop and configure projects using TypeScript.
This part is created by Tuomo Torppa, Tuukka Peuraniemi and Jani Rapo, the awesome developers of Terveystalo, the largest private healthcare service provider in Finland. Terveystalo’s nationwide network covers 300 locations across Finland. The clinic network is supplemented by 24/7 digital services.