Extension Definition.json

{
  name: "JavaExporter",
  author: "ZeuX",
  version: "0.1",
  script: "http://jsadas/javaexporter.js",
  libraries: [],
  menu: [{
    text: "Import",
    items: [{
      icon: "http://asdasd",
      text: "Minecraft (Java)",
      callback: "importCallback"
    }]
    },
    {
      label: "Export",
      items: [{
        icon: "http://asdasd",
        text: "Minecraft (Java)",
        callback: "exportCallback"
      }]
    }
  }]
}

ExtensionManager.ts

class ExtensionManager {
  public loadExtension(url: string) {
    // load extension definition found at url
    // parse json, add to list of loaded extensions
    // create menu items
    // load script
    // after script is loaded, call onLoad
    // notify user
  }
}

IExtension.ts

interface IExtension {
  onLoad(techne: Editor) => void;
  onUnload() => void;
}

IExtensionDefinition.ts

interface IMenuEntry {
  text: string;
  icon: string;
  action: string;
}

interface IMenuDefinition {
  text: string;
  items: IMenuEntry[]
}

interface IExtensionDefinition {
  name: string;
  author: string;
  version: string;
  script: string;
  libraries: string[];
  menu: IMenuDefinition[];
}

JavaExporter.ts

class JavaExporter implements IExtension {
  public onLoad(private techne: Editor) {
  }
  public onUnload() {
  }
  
  public importCallback() {
    this.techne...
  }
  
  public exportCallback() {
    this.techne...
  }
}