BREAKING CHANGE: `includeFiles` option in `postcssIsolateStyles` now defaults to `[/vp-doc\.css/, /base\.css/]` You can remove explicit `includeFiles` if you were using it just to run it on `vp-doc.css`. To revert back to older behavior pass `includeFiles: [/base\.css/]`. The underlying implementation is changed and `transform` and `exclude` options are no longer supported. Use `postcss-prefix-selector` directly if you've advanced use cases.