Examine source code of Mapview for Kijiji™

{
  "author": "Waseem Yusuf",
  "manifest_version": 2,
  "name": "Mapview for Kijiji™",
  "short_name": "Kijiji Mapview",
  "version": "0.0.0.6",
  "description": "View Kijiji™ listings on a beautiful interactive map.",
  "icons": {
    "16": "assets/logo/icon16.png",
    "48": "assets/logo/icon48.png",
    "96": "assets/logo/icon96.png",
    "128": "assets/logo/icon128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "assets/logo/icon16.png",
      "48": "assets/logo/icon48.png",
      "96": "assets/logo/icon96.png",
      "128": "assets/logo/icon128.png"
    },
    "default_title": "View Kijiji™ listings on a beautiful interactive map."
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.kijiji.ca/*"
      ],
      "css": [
        "content.css"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "/assets/*"
  ]
}