Examine source code of Reddit Instant Profile Repost

{
  "manifest_version": 3,
  "name": "Reddit Instant Repost to Profile",
  "version": "1.0.1",
  "description": "One-click repost any Reddit post to your profile with the default title.",
  "browser_specific_settings": {
    "gecko": {
      "id": "reddit-instant-repost-to-profile@addon.firefox",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "cookies",
    "webRequest"
  ],
  "host_permissions": [
    "*://www.reddit.com/*",
    "*://oauth.reddit.com/*"
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.reddit.com/*"
      ],
      "js": [
        "content/storage.js",
        "content/api.js",
        "content/dom.js",
        "content/ui.js",
        "content/main.js"
      ],
      "css": [
        "content/content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "Repost to Profile Settings",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png"
    }
  }
}