Examine source code of NotTheNews

{
  "manifest_version": 3,
  "name": "NotTheNews",
  "version": "1.89",
  "description": "Hides non-substantial content from popular news headline sites.",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "action": {
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png"
    },
    "default_popup": "popup.html",
    "default_title": "NotTheNews"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b9977ba0-0952-4d06-8ad7-fc9099d20185}"
    },
    "safari": {
      "strict_min_version": "14"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*",
        "*://*.nbcnews.com/",
        "*://*.abcnews.go.com/",
        "*://*.cbsnews.com/",
        "*://*.usnews.com/news*",
        "*://*.nytimes.com/section/politics*",
        "*://*.washingtonpost.com/latest-headlines/",
        "*://*.wsj.com/",
        "*://news.yahoo.com/",
        "*://*.bing.com/news",
        "*://*.cnbc.com/",
        "*://*.pbs.org/newshour/",
        "*://*.apnews.com/",
        "*://*.reuters.com/",
        "*://*.npr.org/sections/news/",
        "*://*.upi.com/",
        "*://*.foxnews.com/",
        "*://*.cnn.com/",
        "*://*.ctvnews.ca/",
        "*://*.theguardian.com/uk",
        "*://*.theguardian.com/us",
        "*://*.independent.co.uk/",
        "*://*.independent.co.uk/us*",
        "*://*.economist.com/",
        "*://*.forbes.com/?*",
        "*://*.www.huffpost.com/",
        "*://*.youtube.com/feed/news_destination",
        "*://*.youtube.com/channel/UCYfdidRxbB8Qhf0Nx7ioOYw",
        "*://*.twitter.com/*"
      ],
      "exclude_matches": [
        "*://*.reddit.com/r/*/comments/*"
      ],
      "css": [
        "NotTheNews.css"
      ],
      "js": [
        "jquery-3.3.1.min.js",
        "NotTheNews.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "images/NTN.jpg"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}