How to get all document library metadata for each file using sp pnp v3+

[cardinalpipkin]

I need to get the custom columns that I've made on a document library so I can filter the files and display them on an SPFX webpart.
This is the util:
export const getFiles = (itemId: number, listName: string, filter) => { return sp.web.getFolderByServerRelativePath(listName).expand('Id,Title,FileRef,FileLeafRef,ENGREF').files(); };

I've also tried just:
return sp.web.getFolderByServerRelativePath(listName).files();
and
return sp.web.getFolderByServerRelativePath(listName).select('Id,Title,FileRef,FileLeafRef,ENGREF').files();
and
sp.web.getFolderByServerRelativePath(listName).listItemAllFields().then(r => { console.log(r, 'r'); });

All return the odata for each of the files, but not the custom column I need. What am I missing? I've read the latest v3 documentation thoroughly: https://pnp.github.io/pnpjs/sp/folders/ and https://pnp.github.io/pnpjs/sp/files

[cardinalpipkin]

return sp.web.lists.getByTitle(listName).items.select("FileLeafRef","FileRef", "File", "ENGREF").expand("File")()