implementing udp server

src/use-cases/category-converter-use-case.js

@@ -4,8 +4,10 @@ class CategoryConverterUseCase {
     this.categoriesMapping = categoriesMapping
   }
 
-  execute() {
+  execute(category) {
+    const entry = this.categoriesMapping.find(item => item.id === category)
 
+    return entry ? entry.related[0].split(', ').map(str => str.trim()) : null;
   }
 }