Examine source code of React Context DevTool

{
  "name": "React Context DevTool",
  "version": "4.2",
  "description": "Devtool for React Context and useReducer",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "{7421498a-8968-4dd4-bf57-5d3c4ccd6a60}",
      "strict_min_version": "109.0"
    }
  },
  "icons": {
    "16": "assets/icons/icon16.png",
    "32": "assets/icons/icon32.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "assets/icons/icon16-disabled.png",
      "32": "assets/icons/icon32-disabled.png",
      "48": "assets/icons/icon48-disabled.png",
      "128": "assets/icons/icon128-disabled.png"
    },
    "default_popup": "popup/disabled.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "devtools_page": "devtool/devtool.html",
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": false
  },
  "permissions": [
    "storage",
    "scripting"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "mainContent.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "extension_ids": []
    }
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "injectGlobalHook.js"
      ],
      "run_at": "document_start"
    }
  ]
}