Examine source code of Fab Library Filter

{
  "manifest_version": 3,
  "name": "Fab Library Filter",
  "version": "3.1.1",
  "description": "Filters saved items and specific sellers on Fab.com",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "*://*.fab.com/*",
    "*://www.fab.com/*"
  ],
  "icons": {
    "16": "logo16.png",
    "48": "logo48.png",
    "128": "logo128.png"
  },
  "action": {
    "default_title": "Manage Filters",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "logo16.png",
      "48": "logo48.png",
      "128": "logo128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.fab.com/*",
        "*://www.fab.com/*"
      ],
      "css": [
        "styles.css"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+Shift+S",
        "mac": "Command+Shift+S"
      },
      "description": "Open Filter Manager"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "fab-library-filter@luzerastudio.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}