Examine source code of FicusJS devtools

{
  "description": "Chrome and Firefox devtools extension for debugging FicusJS applications",
  "manifest_version": 2,
  "name": "FicusJS devtools",
  "version": "0.1.0",
  "author": "FicusJS",
  "homepage_url": "https://github.com/ficusjs/ficusjs-devtools",
  "icons": {
    "48": "icons/ficus-icon.png"
  },
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "lib/browser-polyfill.js",
      "devtools/background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "devtools/content-scripts/inspect-applicator.js",
        "devtools/content-scripts/messaging.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "devtools_page": "devtools/devtools.html",
  "web_accessible_resources": [
    "devtools/sidebar/selection/inspect.js"
  ]
}