using System;
using UnityEngine;

public class DynamicMono : MonoBehaviour
{
    public Action UpdateAction;

    void Update()
    {
        UpdateAction?.Invoke();
    }
}

public class DynamicScriptAdder : MonoBehaviour
{
    public void AddDynamicScript(GameObject target, Action updateAction)
    {
        DynamicMono dynamicScript = target.AddComponent<DynamicMono>();
        dynamicScript.UpdateAction = updateAction;
    }
}

using System;
using UnityEngine;

public class DynamicMono : MonoBehaviour
{
    public Action UpdateAction;

    void Update()
    {
        UpdateAction?.Invoke();
    }
}

public class DynamicScriptAdder : MonoBehaviour
{
    public void AddDynamicScript(GameObject target, Action updateAction)
    {
        DynamicMono dynamicScript = target.AddComponent<DynamicMono>();
        dynamicScript.UpdateAction = updateAction;
    }
}

import * as e from "UnityEngine";

const targetObject = require("TargetObject") as e.GameObject;
const globals = require("Globals") as e.GameObject;

const dsa = globals.GetComponent("DynamicScriptAdder") as any;
dsa.AddDynamicScript(targetObject, () => {
  // ...
});

import * as e from "UnityEngine";

const targetObject = require("TargetObject") as e.GameObject;
const globals = require("Globals") as e.GameObject;

const dsa = globals.GetComponent("DynamicScriptAdder") as any;
dsa.AddDynamicScript(targetObject, () => {
  // ...
});