Examine source code of Web Developer Tools

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "1.3.2",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "default_locale": "en",
  "permissions": [
    "storage",
    "scripting",
    "tabs",
    "cookies",
    "browsingData",
    "activeTab",
    "clipboardWrite"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "web-developer-tools@webdevelopertools.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "personallyIdentifyingInfo"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "action": {
    "default_title": "Web Developer Tools",
    "default_popup": "popup.html"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+W",
        "mac": "Alt+W"
      },
      "description": "__MSG_commandDescription__"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": false,
      "run_at": "document_start",
      "js": [
        "content-scripts/console-buffer.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": false,
      "run_at": "document_start",
      "js": [
        "content-scripts/console-hook.js"
      ],
      "world": "MAIN"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": false,
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}