Tutorials
Practical tutorials for the work we actually do. Pick one, read it in order, and apply it.
Reproduce the missing declaration error, check whether the library has its own types, install the @types package and prove the types work. After this, you know the fallback when no types package exists.
Convert one JavaScript module, catch a lost runtime guard, and verify an unchanged JavaScript caller against the emitted TypeScript build.
Reproduce a project-only build that consumes stale shared declarations, rebuild the graph, and verify that an API change reaches its consumer.
Write a declaration file for a JavaScript helper with a generic function and an overload, then test it with a short file. After this, calls to the helper are checked and the JavaScript stays as it is.
Keep node_modules out of the build context with a .dockerignore file and let npm ci install the packages inside the image. After this, you can cut the context size and avoid copying Windows-built packages into a Linux image.