Examine source code of TabSearch

{
  "manifest_version": 2,
  "name": "TabSearch",
  "version": "0.6.2",
  "description": "Easy tab search & switching",
  "permissions": [
    "tabs",
    "activeTab",
    "storage",
    "sessions"
  ],
  "optional_permissions": [
    "bookmarks",
    "history"
  ],
  "icons": {
    "48": "icons/logo-48.png",
    "96": "icons/logo-96.png"
  },
  "browser_action": {
    "default_icon": "icons/logo-48.png",
    "default_title": "TabSearch",
    "default_popup": "popup/index.html"
  },
  "background": {
    "scripts": [
      "background_bundle.js"
    ]
  },
  "options_ui": {
    "page": "settings/index.html",
    "open_in_tab": true,
    "browser_style": true
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Ctrl+Shift+L"
      },
      "description": "Execute this browser action"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "58.0",
      "id": "{11a68c03-baa3-41fb-869c-5172c4c4dd2e}"
    }
  }
}