Examine source code of Corona Blocker

{
  "name": "Corona Blocker",
  "version": "1.0.7",
  "description": "Take a break from Coronavirus/COVID-19 news, block ALL mentions of Coronavirus from top news websites and social networks.",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "*://*.facebook.com/*",
    "*://*.twitter.com/*",
    "*://*.worldometers.info/*",
    "*://*.statista.com/*",
    "*://*.cnn.com/*",
    "*://*.cnbc.com/*",
    "*://*.bbc.com/*",
    "*://news.yahoo.com/*",
    "*://news.google.com/*",
    "*://*.huffpost.com/*",
    "*://*.nytimes.com/*",
    "*://*.foxnews.com/*",
    "*://*.nbcnews.com/*",
    "*://*.washingtonpost.com/*",
    "*://*.theguardian.com/*",
    "*://*.wsj.com/*",
    "*://*.go.com/*",
    "*://*.latimes.com/*",
    "*://*.almasryalyoum.com/*",
    "*://*.elwatannews.com/*",
    "*://*.coronameter.co/*",
    "https://google.com/covid19-map",
    "*://ensonhaber.com/*",
    "*://*.who.int/*",
    "*://*.google.com/*",
    "https://covid19.saglik.gov.tr/*",
    "*://*.aa.com.tr/*",
    "*://*.rt.com/*",
    "*://*.reddit.com/*",
    "*://*.france24.com/*",
    "*://*.usatoday.com/*",
    "https://flic.kr/*",
    "https://giphy.com/*",
    "*://*.aljazeera.com/*",
    "*://*.aljazeera.net/*",
    "https://www.youtube.com/*"
  ],
  "content_scripts": [
    {
      "js": [
        "jquery-3.4.1.min.js",
        "contentScript.js"
      ],
      "run_at": "document_start",
      "matches": [
        "*://*.facebook.com/*",
        "*://*.twitter.com/*",
        "*://*.worldometers.info/*",
        "*://*.statista.com/*",
        "*://*.cnn.com/*",
        "*://*.cnbc.com/*",
        "*://*.bbc.com/*",
        "*://news.yahoo.com/*",
        "*://news.google.com/*",
        "*://*.huffpost.com/*",
        "*://*.nytimes.com/*",
        "*://*.foxnews.com/*",
        "*://*.nbcnews.com/*",
        "*://*.washingtonpost.com/*",
        "*://*.theguardian.com/*",
        "*://*.wsj.com/*",
        "*://*.go.com/*",
        "*://*.latimes.com/*",
        "*://*.almasryalyoum.com/*",
        "*://*.elwatannews.com/*",
        "*://*.coronameter.co/*",
        "https://google.com/covid19-map",
        "https://covid19.saglik.gov.tr/*",
        "*://*.aa.com.tr/*",
        "*://*.google.com/search*",
        "*://ensonhaber.com/*",
        "*://*.who.int/*",
        "*://*.rt.com/*",
        "*://*.reddit.com/*",
        "*://*.france24.com/*",
        "*://*.aljazeera.com/*",
        "*://*.aljazeera.net/*",
        "*://*.usatoday.com/*"
      ],
      "exclude_matches": [
        "https://www.reddit.com/r/firefox/comments/fsvdgw/corona_blocker_take_a_break_from_coronavirus_news/",
        "https://www.reddit.com/r/chrome_extensions/comments/ftal1v/corona_blocker_take_a_break_from_coronavirus_news/",
        "https://www.reddit.com/r/chrome_extensions/",
        "https://www.reddit.com/r/firefox/"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "page_action": {
    "default_icon": {
      "16": "images/icon16.png",
      "32": "images/icon32.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "manifest_version": 2,
  "web_accessible_resources": [
    "cat_pics/*.jpg",
    "cat_pics/*.gif",
    "cat_pics/*.webp"
  ]
}