# Locally bundled dependencies

- [Three.js OBJLoader r186](README-obj-loader.md): existing OBJ parser and Three.js dependencies; see its MIT license notice.
- [occt-import-js 0.0.23](README-occt-import-js.md): unmodified browser CAD import JavaScript/WebAssembly, LGPL-2.1. Includes provenance, hashes, exact upstream source revision, build/source retrieval instructions and both upstream license files.

The STEP engine files are lazy-loaded in a dedicated worker only when a user chooses a CAD file or explicitly loads a sample. Files are parsed on the user's device.