Examine source code of Todoist for Firefox

{
  "manifest_version": 3,
  "version": "12.21.9",
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "short_name": "Todoist",
  "default_locale": "en",
  "icons": {
    "16": "todoist_16.png",
    "48": "todoist_48.png",
    "128": "todoist_128.png",
    "256": "todoist_256.png",
    "512": "todoist_512.png"
  },
  "action": {
    "default_title": "Todoist",
    "default_icon": "todoist_256.png",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "permissions": [
    "storage",
    "tabs",
    "contextMenus",
    "declarativeNetRequestWithHostAccess",
    "webNavigation"
  ],
  "host_permissions": [
    "http://*.todoist.com/*",
    "https://*.todoist.com/*"
  ],
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+T"
      },
      "description": "__MSG_openPopup__"
    },
    "quick-add-task": {
      "suggested_key": {
        "default": "Alt+Q"
      },
      "description": "__MSG_quickAddTask__"
    },
    "add-to-todoist": {
      "suggested_key": {
        "default": "Alt+Shift+A"
      },
      "description": "__MSG_addToTodoist__"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "popup.html",
        "popup.js",
        "browserApi.js",
        "i18nUtils.js",
        "counter_update.js",
        "popup.css",
        "firefox_inprivate.svg"
      ],
      "matches": [
        "https://*.todoist.com/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "support@todoist.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}