Examine source code of GeoSpoof: Spoof Geolocation & Timezone

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "author": "Anthony Sgro",
  "homepage_url": "https://github.com/anthonysgro/geospoof",
  "incognito": "spanning",
  "version": "2.0.2",
  "permissions": [
    "storage",
    "privacy",
    "proxy",
    "scripting",
    "alarms",
    "idle",
    "webRequest",
    "webRequestBlocking",
    "webRequestFilterResponse",
    "webRequestFilterResponse.serviceWorkerScript"
  ],
  "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"
  },
  "optional_permissions": [
    "userScripts"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a8f7e9c2-4d3b-4a1e-9f8c-7b6d5e4a3c2b}",
      "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>"
      ]
    }
  ]
}