Examine source code of Requestman

{
  "manifest_version": 3,
  "name": "Requestman",
  "version": "1.0.1",
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "devtools_page": "devtools/index.html",
  "action": {
    "default_title": "Requestman",
    "default_popup": "popup/index.html"
  },
  "background": {
    "service_worker": "background/index.js",
    "type": "module",
    "scripts": [
      "background/index.js"
    ]
  },
  "permissions": [
    "storage",
    "webRequest",
    "declarativeNetRequest",
    "declarativeNetRequestWithHostAccess",
    "declarativeNetRequestFeedback"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-bridge.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "injected.js"
      ],
      "world": "MAIN",
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "injected.js",
        "assets/icon-hit-128.png",
        "assets/icon-128.png",
        "assets/icon-32.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "requestman@local",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}