Examine source code of Todoist One-Click

{
  "name": "Todoist One-Click",
  "description": "Capture tasks with one click",
  "version": "2.3.0",
  "manifest_version": 3,
  "permissions": [
    "storage",
    "unlimitedStorage",
    "contextMenus",
    "tabs"
  ],
  "action": {
    "default_icon": {
      "48": "icons/icon.png",
      "96": "icons/icon.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "options_ui": {
    "page": "settings.html"
  },
  "commands": {
    "add-task": {
      "description": "Add tab as task"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "todoist@oneclick"
    }
  }
}