Writing your editor extension

Unreal.js loads extensions automatically. Extension should be devrequired and have name with prefix 'extension'. Unreal.js searches GameContent/Scripts recursively to find extensions.

(function (global) {
  "use strict"
  module.exports = () => {
    console.log("Hello my first editor extension")

    class MyDelegates extends JavascriptGlobalDelegates {
      OnObjectModified(obj) {
        console.log("You just modified",obj.GetName())
      }
    }
    let MyDelegates_C = require('uclass')()(global,MyDelegates)
    let instance = new MyDelegates_C()
    instance.Bind('OnObjectModified')

    return () => {
      instance.UnbindAll()
      console.log("Bye, editor")
    }
  }
})(this)


And your `JavascriptComponent` can be running within editor by checking `bActiveWithinEditor`.

There can be several worlds so there is no `GWorld` exposed. Instead of accessing `GWorld`, you can retrieve by calling `Root.GetEngine().GetEditorWorld()`.