Examine source code of Side Browser

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "author": "tukapiyo",
  "developer": {
    "name": "tukapiyo",
    "url": "https://www2.filewo.net/"
  },
  "description": "__MSG_extensionDescription__",
  "version": "1.1.0.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "side-browser@filewo.net",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "default_locale": "en",
  "icons": {
    "48": "images/sidebrowser-logo.svg",
    "96": "images/sidebrowser-logo.svg"
  },
  "options_ui": {
    "page": "/ui/options.xhtml"
  },
  "background": {
    "scripts": [
      "/scripts/side-browser-config.js",
      "/scripts/side-browser-background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "/scripts/side-browser-content.js"
      ],
      "all_frames": true,
      "run_at": "document_start"
    }
  ],
  "sidebar_action": {
    "browser_style": false,
    "default_icon": "images/sidebrowser-logo.svg",
    "default_title": "__MSG_extensionName__",
    "default_panel": "ui/sidebar.xhtml"
  },
  "browser_action": {
    "browser_style": false,
    "default_icon": "images/sidebrowser-logo.svg",
    "default_title": "__MSG_extensionName__"
  },
  "commands": {
    "_execute_sidebar_action": {}
  },
  "permissions": [
    "browsingData",
    "webRequest",
    "webRequestBlocking",
    "declarativeNetRequestWithHostAccess",
    "storage",
    "tabs",
    "<all_urls>"
  ]
}