Examine source code of Tabulate

{
  "manifest_version": 2,
  "name": "__MSG_extension_name__",
  "description": "__MSG_extension_description__",
  "version": "0.0.18",
  "browser_specific_settings": {
    "gecko": {
      "id": "{65afae73-8786-42d1-a6e7-95dc884dfb3a}",
      "strict_min_version": "73.0"
    }
  },
  "permissions": [
    "<all_urls>",
    "contextualIdentities",
    "cookies",
    "find",
    "sessions",
    "storage",
    "tabs",
    "tabHide",
    "theme",
    "unlimitedStorage"
  ],
  "default_locale": "en",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "toggle-feature-sidebar": {
      "suggested_key": {
        "default": "Alt+Shift+U",
        "linux": "Ctrl+Shift+U"
      },
      "description": "Send a 'toggle-feature-sidebar' event to the extension"
    }
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icons/tabulate-16.svg",
      "32": "icons/tabulate-32.svg"
    },
    "default_title": "__MSG_extension_name__",
    "default_popup": "action.html",
    "theme_icons": [
      {
        "light": "icons/tabulate-16.svg",
        "dark": "icons/tabulate-16.svg",
        "size": 16
      },
      {
        "light": "icons/tabulate-32.svg",
        "dark": "icons/tabulate-32.svg",
        "size": 32
      }
    ]
  },
  "sidebar_action": {
    "default_icon": {
      "16": "icons/tabulate-16.svg",
      "32": "icons/tabulate-32.svg"
    },
    "default_title": "__MSG_sidebar_name__",
    "default_panel": "sidebar.html",
    "open_at_install": false
  },
  "options_ui": {
    "browser_style": true,
    "page": "options.html"
  }
}