Examine source code of LocalStorage Editor

{
  "author": "igorlogius",
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{908b01ae-e9f3-4122-b4ce-5c731d04c738}"
    }
  },
  "homepage_url": "https://github.com/igorlogius/webextensions/tree/main/sources/localstorage-editor",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_area": "navbar"
  },
  "commands": {
    "_execute_browser_action": {}
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "128": "icon.png"
  },
  "description": "Add, edit, copy, remove, export and import local- and session- storage data",
  "manifest_version": 2,
  "name": "LocalStorage Editor",
  "permissions": [
    "storage",
    "clipboardRead",
    "clipboardWrite",
    "<all_urls>"
  ],
  "version": "1.3.33"
}