gistfile1.txt

"use strict";

const { Reactor } = require("sdk/event/utils");
const { Loaded } = require("sdk/input/window");

const reactor = new Reactor({
  onStart: initial => {
    console.log('start')
console.log(initial)
  },
  onNext: (current, previous) => {
    console.log('next')
console.log(current)
console.log(previous)
  },
  onEnd: previous => {
    console.log('end')
    console.log(previous)
  }
})

reactor.run(Loaded)

//PlacesCommandHook