Examine source code of MVTest

{
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "MVTest@webExtension.arielg.il",
      "strict_min_version": "109.0"
    }
  },
  "name": "MVTest",
  "version": "1.3",
  "description": "MVTest",
  "author": "arielg",
  "content_security_policy": {
    "extension_pages": "script-src 'self'"
  },
  "icons": {
    "16": "MVTest.svg",
    "32": "MVTest.svg",
    "48": "MVTest.svg",
    "64": "MVTest.svg",
    "96": "MVTest.svg"
  },
  "action": {
    "browser_style": false,
    "default_title": "MVTest",
    "default_icon": {
      "16": "MVTest.svg",
      "32": "MVTest.svg",
      "48": "MVTest.svg",
      "64": "MVTest.svg",
      "96": "MVTest.svg"
    },
    "default_popup": "popupV3.html"
  },
  "background": {
    "scripts": [
      "/background.js"
    ]
  }
}