Examine source code of ALFAH Browser Plugin

{
  "name": "ALFAH Browser Plugin",
  "version": "1.0.1",
  "description": "It exports Shopping Carts from another sites and send it to the ALFAH Import Shopping Cart service",
  "manifest_version": 3,
  "action": {
    "default_title": "ALFAH Browser Plugin",
    "default_icon": {
      "16": "images/16.png",
      "32": "images/32.png",
      "48": "images/48.png",
      "128": "images/128.png",
      "180": "images/180.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "sysadmin@alfah.de"
    }
  },
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ]
  },
  "icons": {
    "16": "images/16.png",
    "32": "images/32.png",
    "48": "images/48.png",
    "128": "images/128.png",
    "180": "images/180.png"
  },
  "content_scripts": [
    {
      "js": [
        "browser-polyfill.js",
        "partslink-sidebar-sc.js"
      ],
      "matches": [
        "https://www.partslink24.com/p5/latest/p5.html*"
      ],
      "css": [
        "partslink-sidebar-sc.css"
      ]
    },
    {
      "js": [
        "browser-polyfill.js",
        "partslink-main-sc.js"
      ],
      "matches": [
        "https://www.partslink24.com/pl24-shopping-cart-ui*"
      ],
      "css": [
        "partslink-main-sc.css"
      ],
      "run_at": "document_idle"
    },
    {
      "js": [
        "browser-polyfill.js",
        "partslink-separate-sc.js"
      ],
      "matches": [
        "https://www.partslink24.com/partslink24/cartpage1*"
      ],
      "css": [
        "partslink-separate-sc.css"
      ]
    }
  ],
  "externally_connectable": {
    "matches": [
      "<all_urls>"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "images/16.png",
        "images/32.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}