Examine source code of FactSnap

{
  "name": "FactSnap",
  "description": "FactSnap is your reliable fact-checking companion.",
  "version": "0.0.8",
  "manifest_version": 3,
  "icons": {
    "16": "logos/logo16.png",
    "48": "logos/logo48.png",
    "128": "logos/logo128.png"
  },
  "action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "logos/logo16.png",
      "48": "logos/logo48.png",
      "128": "logos/logo128.png"
    }
  },
  "options_page": "settings.html",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://ai4d.nand-projects.io/api/fact-check",
    "http://localhost:8000/",
    "https://localhost:8000/"
  ],
  "homepage_url": "https://factsnap.nand.io",
  "background": {
    "service_worker": "serviceWorker.js",
    "scripts": [
      "serviceWorker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "factsnap@nand.io",
      "strict_min_version": "58.0"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*",
        "fonts/*",
        "font.css",
        "index.css",
        "locale.json"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}