This folder contains shared components that can be used independently of Gerrit.
gr-diff.js is the gr-diff component used in gerrit to render diff. If you want to use it, feel free to import it and use it in your project as:
<gr-diff></gr-diff>
All supported attributes defined in polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js, you can pass them by just assigning them to the gr-app element.
To customize the style of the diff, you can use css variables, all supported variables defined in polygerrit-ui/app/styles/themes/app-theme.js and polygerrit-ui/app/styles/themes/dark-theme.js.