Examine source code of Spoof Geolocation

{
  "manifest_version": 3,
  "version": "0.3.1",
  "name": "Spoof Geolocation",
  "description": "Rewrites the browser's geolocation coordinates (latitude and longitude) to custom values.",
  "permissions": [
    "storage",
    "contextMenus",
    "scripting"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png",
    "256": "data/icons/256.png"
  },
  "action": {
    "default_popup": "/data/popup/index.html"
  },
  "background": {
    "service_worker": "worker.js",
    "scripts": [
      "tld.js",
      "context.js",
      "worker.js"
    ]
  },
  "homepage_url": "https://webextension.org/listing/spoof-geolocation.html",
  "commands": {
    "toggle-action": {
      "description": "Toggle between enabled and disable states"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{61173a74-ece7-4ef3-86a7-525538b78430}",
      "strict_min_version": "148.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}