Examine source code of Reddit History viewer

{
  "manifest_version": 3,
  "name": "Reddit History Viewer",
  "version": "1.1.0",
  "description": "Instantly view and paginate through a user's deleted or active post and comment history directly on hover.",
  "homepage_url": "https://github.com/PointySalt/RedditHistoryViewer",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*"
      ],
      "css": [
        "styles.css"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "host_permissions": [
    "*://*.reddit.com/*",
    "https://arctic-shift.photon-reddit.com/*",
    "https://api.pullpush.io/*"
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "reddithistoryviewerv1@pointysalt.com",
      "strict_min_version": "109.0"
    }
  }
}