add ignore versions property

src/delete.ts

@@ -21,7 +21,10 @@ export function getVersionIds(input: Input): Observable<string[]> {
           versionInfo.length - input.minVersionsToKeep
         return numberVersionsToDelete <= 0
           ? []
-          : versionInfo.slice(0, numberVersionsToDelete).map(info => info.id)
+          : versionInfo
+              .filter(info => !input.ignoreVersions.test(info.version))
+              .map(info => info.id)
+              .slice(0, numberVersionsToDelete)
       })
     )
   }