Examine source code of Postman Interceptor

{
  "name" : "Postman Interceptor",
  "description" : "Capture requests from any website and send them to Postman Client.",
  "icons" : {
    "16" : "assets/interceptor_16x16.png",
    "32" : "assets/interceptor_32x32.png",
    "48" : "assets/interceptor_48x48.png",
    "128" : "assets/interceptor_128x128.png"
  },
  "action" : {
    "default_title" : "Postman Interceptor",
    "default_icon" : "assets/interceptor_48x48.png",
    "default_popup" : "html/index.html"
  },
  "content_scripts" : [
    {
      "matches" : [
        "*://*.postman-beta.co/*" ,
        "*://*.postman-stage.co/*" ,
        "*://*.postman-preview.co/*" ,
        "*://*.postman.co/*" 
      ],
      "js" : [
        "content_script.js" 
      ]
    }
  ],
  "background" : {
    "scripts" : [
      "background/background.js" 
    ],
    "type" : "module" 
  },
  "content_security_policy" : {
    "extension_pages": "script-src 'self'"
  },
  "host_permissions" : [
    "<all_urls>" 
  ],
  "permissions" : [
    "webRequest" ,
    "nativeMessaging" ,
    "storage" ,
    "cookies" ,
    "scripting" 
  ],
  "optional_permissions" : [
    "webRequest" 
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a81256d7-babd-4185-91f6-95580215661d}"
    }
  },
  "manifest_version" : 3 ,
  "version" : "3.2.1"
}