How to use the class in the editor?

Question

Unity

I have a prefab to which a class is attached, let's say Test, in order to edit it in real time, I added it to the editor

using UnityEditor;
using UnityEngine;
[CustomEditor(typeof(Test))]
public class TestEditor : Editor{
    public override void OnInspectorGUI(){
        base.DrawDefaultInspector();
        Test re = (Test)target;
        re.TestMethod();
..................................
        }
    }

Everything works until I use another class in the class, for example

using UnityEngine;
public class Test: MonoBehaviour{
  public void TestMethod(){
    if(VarA < DataStorage.instance.SomeVar){ .....

So everything works, but when editing, it gives an error saying "I don't know who DataStorage is ...".
Tell me how to use it in the editor?

Answer 1

Zefirot , error is nullref. The object does not exist in the editor because DataStorage.instance is filled in Awake (which, in turn, will not work as you want in edit mode).
You need to write custom scripts for the editor, which will get data for the UI in a different way (load data from a file along the path , for example)