Examine source code of WisChat

{
  "manifest_version": 2,
  "name": "Wischat",
  "description": "W Integrate Chat",
  "version": "2.0.70",
  "icons": {
    "16": "logo/logo-16.png",
    "48": "logo/logo-48.png",
    "128": "logo/logo-128.png"
  },
  "options_page": "data/options/index.html",
  "action": {
    "default_title": "Wischat 2.0"
  },
  "permissions": [
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "*://*.whatsapp.com/*",
    "*://*.wis.chat/*",
    "*://*.disisot.com/*",
    "*://*.wa.link/*",
    "*://*.wa.me/*",
    "*://wis.chat/*",
    "*://wa.link/*",
    "*://wa.me/*",
    "*://bit.ly/*",
    "*://localhost/*",
    "*://127.0.0.1/*"
  ],
  "background": {
    "scripts": [
      "service-worker.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "idiomas.js",
        "wppconnect-wa.js",
        "thirdParty/jquery-3.4.1.min.js",
        "thirdParty/purify.min.js",
        "foreground.js",
        "envio_individual.js",
        "integracion_crm.js",
        "xlsx.full.min.js",
        "verificacion_de_numeros.js",
        "descarga_contactos_grupos.js",
        "productos.js",
        "logger.js",
        "chatbot.js",
        "mi_cuenta_wischat.js"
      ],
      "matches": [
        "*://web.whatsapp.com/"
      ],
      "css": [
        "data/inject.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "idiomas.js",
    "wppconnect-wa.js",
    "wapi.js",
    "envio_individual.js",
    "integracion_crm.js",
    "xlsx.full.min.js",
    "verificacion_de_numeros.js",
    "descarga_contactos_grupos.js",
    "productos.js",
    "logger.js",
    "chatbot.js",
    "mi_cuenta_wischat.js",
    "data/window/home.svg",
    "data/window/reload.svg",
    "data/window/settings.svg",
    "data/window/clean.svg",
    "data/window/tool.svg"
  ],
  "externally_connectable": {
    "ids": [
      "*"
    ],
    "matches": [
      "*://web.whatsapp.com/*"
    ]
  },
  "applications": {
    "gecko": {
      "id": "{ea83e4ee-0f02-455f-8428-f791b8fd4fdd}",
      "strict_min_version": "100.0"
    }
  }
}