fix(core): update

ts/smartnpm.classes.npmpackage.ts

@@ -165,7 +165,7 @@ export class NpmPackage {
     }
   ): Promise<plugins.smartfile.Smartfile> {
     const result = await this.getFilesFromPackage(filePath, optionsArg, true);
-    return result[0];
+    return result[0] || null;
   }
 
   /**