Examine source code of reveddit real-time

{
  "name": "reveddit real-time",
  "description": "reveddit notifies you when any of your content on reddit has been removed.",
  "version": "0.0.5.18",
  "permissions": [
    "cookies",
    "notifications",
    "alarms",
    "storage",
    "contextMenus",
    "scripting",
    "declarativeNetRequestWithHostAccess",
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "https://*.reddit.com/*",
    "https://*.reveddit.com/*"
  ],
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "web_accessible_resources": [
    "src/history.html",
    "src/other.html",
    "src/whatsnew.html"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.reveddit.com/*",
        "https://*.reddit.com/*"
      ],
      "js": [
        "src/content.js"
      ],
      "css": [
        "src/content.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "options_ui": {
    "page": "src/options.html",
    "open_in_tab": false
  },
  "content_security_policy": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self';",
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "real-time-stable@reveddit.com"
    },
    "gecko_android": {}
  },
  "browser_action": {
    "default_popup": "src/popup.html",
    "default_icon": {
      "16": "icons/16.png",
      "24": "icons/24.png",
      "32": "icons/32.png"
    }
  }
}