Examine source code of location changer x

{
  "manifest_version": 3,
  "name": "GeoSpoof",
  "description": "Spoof your browser's geolocation and timezone. Prevent WebRTC IP leaks.",
  "author": "Anthony Sgro",
  "homepage_url": "https://github.com/anthonysgro/geospoof",
  "incognito": "spanning",
  "version": "1.18.4",
  "permissions": [
    "storage",
    "privacy",
    "scripting",
    "alarms"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/injected.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "world": "MAIN"
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png",
    "1024": "icons/icon-1024.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2a06a9e2-e87f-4ac7-ab27-8f3a201d5446}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "140.0"
    }
  },
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "type": "module"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "content/injected.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}