Examine source code of Side Tasks

{
  "manifest_version": 2,
  "name": "Side Tasks",
  "description": "Quick, easy and personal todo/task tracking app for your browser.",
  "version": "1.0",
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "54.0a1",
      "id": "{8bf0081f-0ce9-4ee0-b769-6c29dbfe460d}"
    }
  },
  "homepage_url": "https://github.com/basti42/sidetasks-extension",
  "sidebar_action": {
    "default_icon": "icons/pen_paper.png",
    "default_title": "Side-Tasks",
    "default_panel": "sidebar/panel.html"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      }
    }
  }
}