Examine source code of Angular state inspector

{
  "manifest_version": 2,
  "name": "Angular state inspector",
  "description": "Helps you debug Angular component state, inside the Elements tab of the DevTools",
  "version": "1.5.0",
  "devtools_page": "devtools/index.html",
  "author": "Igor Klymenok",
  "icons": {
    "16": "img/angular.png",
    "48": "img/angular.png",
    "128": "img/angular.png"
  }
}