Pigment CSS is an open-source project of the MUI organization. The repositories are part of the same codebase.
mui/pigment-css
imports the code infrastructure from mui/material-ui
.
You can find the "contributing" guide for the main repository in mui/material-ui/CONTRIBUTING.md.
Most of the content in the main repository "contributing" guide applies to this repository. There are, however, a few differences:
- The default GitHub branch might be different.
- The local documentation site opens on a different port: 3006 instead of 3000.