TypeScript is JavaScript with static types, compiled to plain JavaScript and used by most large JS codebases today.
Language detection is based on actual file extensions, so the card reflects how much of the repo really is TypeScript.
Stack Fingerprint reads the repo's full file tree in one GitHub API call and flags TypeScript when it finds any of these:
.ts, .tsx, .mts, .ctsA static badge you can paste anywhere in Markdown:
Static badges go stale the moment you swap a dependency. A Stack Fingerprint card is generated from the repo, so TypeScript (and everything around it) appears or disappears on its own:
microsoft/TypeScript · generated live from the repo[](https://stackfingerprint.vercel.app/?repo=OWNER/REPO)Replace OWNER/REPO with your repository, or open the builder to pick a theme and layout.
Inside the scanner: one recursive Git Trees request, file signals, dependency signals, dev-only tagging, and why every icon has to be inlined as a data URI for GitHub to render it.
Three ways to show what your project is built with: hand-made shields.io badges, a live auto-detected stack card, or a card committed by a GitHub Action. Pros, cons and copy-paste snippets.