Examine source code of EasyWeather

{
  "manifest_version": 2,
  "name": "EasyWeather",
  "version": "1.0.0",
  "description": "Quick weather at a glance + site overlay widget.",
  "browser_action": {
    "default_title": "EasyWeather",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "geolocation",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "96": "icon96.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "easyweather@example.com",
      "strict_min_version": "91.0"
    }
  }
}