TScert: A Sound Core for TypeScript
Summary
TScert is a sound core for TypeScript that uses Lean to certify that a TypeScript function can only be accepted with a formal proof. The repo page explains the architecture (TypeScript frontend, OCaml producer, Lean verifier), prerequisites, and how to run the checks, framing it as an active, unfinished research project with clear status metrics. It positions TScert as a rigorous, open-source effort to push toward verified TypeScript code.