nl_tokens: Get all files and their dependencies on given path .
pl_tokens: async function getFiles ( paths , options ) { const files = ( await getVinylFiles ( paths , options ) ) . map ( file => [ file , ... getRequires ( file , options ) ] ) ; return ( await promiseFlatten ( files ) ) . <mask> ( file => file ) . filter ( filterDuplicateFiles ( ) ) ; }