Examine source code of DDGSS

{
  "name": "DDGSS",
  "version": "1.2",
  "manifest_version": 2,
  "description": "A small extension that stores your Duck Duck Go settings in private browsing mode.",
  "homepage_url": "https://github.com/J-The-Dev/DDGSS",
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://duckduckgo.com/*"
      ],
      "js": [
        "DDGSS.js"
      ],
      "run_at": "document_start"
    }
  ],
  "icons": {
    "16": "assets/icons/DDGSS-16.png",
    "48": "assets/icons/DDGSS-48.png",
    "128": "assets/icons/DDGSS-128.png"
  }
}