The JSCert project aims to really understand JavaScript. JSCert itself is a mechanised specification of JavaScript, written in the Coq proof assistant, which closely follows the ECMAScript 5 English standard. JSRef is a reference interpreter for JavaScript in OCaml, which has been proved correct with respect to JSCert and tested with the Test 262 test suite.
30 Day SummaryJan 18 2026 — Feb 17 2026
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12 Month SummaryFeb 17 2025 — Feb 17 2026
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