Examine source code of AsideNotes

{
  "manifest_version": 2,
  "name": "__MSG_extension_name__",
  "version": "1.0.0",
  "version_name": "1.0.0",
  "description": "__MSG_extension_description__",
  "default_locale": "en",
  "author": "Jarek Tyler M.",
  "developer": {
    "name": "Jarek Tyler M."
  },
  "content_security_policy": "script-src 'self'; object-src 'none'; img-src 'self' data:; base-uri 'none'",
  "browser_specific_settings": {
    "gecko": {
      "id": "asidenotes-tyler@addons.mozilla.org",
      "strict_min_version": "120.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "assets/icons/mdi--notebook-edit-outline-48.png",
    "128": "assets/icons/mdi--notebook-edit-outline-128.png"
  },
  "sidebar_action": {
    "default_title": "__MSG_sidebar_title__",
    "default_panel": "sidebar.html",
    "default_icon": {
      "16": "assets/icons/mdi--notebook-edit-outline-16.png",
      "32": "assets/icons/mdi--notebook-edit-outline-32.png"
    }
  },
  "browser_action": {
    "default_title": "__MSG_popup_browserAction_title__",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/icons/mdi--notebook-edit-outline-16.png",
      "32": "assets/icons/mdi--notebook-edit-outline-32.png"
    },
    "theme_icons": [
      {
        "light": "assets/icons/mdi--notebook-edit-outline-16.png",
        "dark": "assets/icons/mdi--notebook-edit-outline-16-light.png",
        "size": 16
      },
      {
        "light": "assets/icons/mdi--notebook-edit-outline-32.png",
        "dark": "assets/icons/mdi--notebook-edit-outline-32-light.png",
        "size": 32
      }
    ]
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "commands": {
    "toggle-sidebar": {
      "suggested_key": {
        "default": "Alt+Shift+Q"
      }
    },
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+Shift+S"
      }
    }
  },
  "permissions": [
    "storage",
    "alarms",
    "notifications"
  ]
}