TypeScript Expert skill: what it does and how to install it

What it does. Analyses the project configuration, identifies the problem category, applies TypeScript and JavaScript solutions, and validates them with one-shot type checks, tests and builds. It covers advanced types, compiler and build performance, migrations, monorepos, module resolution, tooling and code review; highly specialised bundler, module-migration or compiler-internals issues are redirected to another expert.

When to use it. Use it for TypeScript or JavaScript tasks involving typing, debugging, refactoring, configuration or performance. It is not a substitute for environment-specific validation or expert review, and stops when required inputs or success criteria are missing.