Contributed to the vitest-dev/vitest repository by enhancing the documentation to clarify TypeScript configuration, specifically addressing the use of typeRoots. Focused on reducing developer misconfigurations, the work provided explicit guidance on including node_modules in typeRoots to ensure Vitest global APIs are properly discovered. Added a concrete tsconfig.json example in Markdown to illustrate the correct setup, supporting smoother onboarding for TypeScript users. The update aligned documentation with common TypeScript tooling expectations, improving the overall developer experience. This contribution demonstrated attention to detail in technical writing and a strong understanding of TypeScript configuration challenges within open source testing frameworks.