regex-tools/public/engines/README.md

Engine assets

Regex Tools executes ECMAScript through the browser's native RegExp engine. It also ships three declared, self-hosted runtime packs:

• pcre2/: official PCRE2 10.47, 8-bit WebAssembly;
• python/: Pyodide 314.0.3 with CPython 3.14.2 re; and
• java/: TeaVM 0.15.0's java.util.regex class library compiled to an ES2015 module. This module is not OpenJDK.

The packs come from pinned, documented open-source inputs. Runtime files travel with deterministic metadata, closed-set checksums and the applicable upstream licence/notice material, all of which are verified by the release gate.