Examine source code of Comment Searcher

{
  "manifest_version": 3,
  "name": "Comment Searcher",
  "version": "1.0",
  "description": "Search YouTube/Reddit comments by words in any order",
  "browser_specific_settings": {
    "gecko": {
      "id": "comment-searcher@yasas-sri.github.io",
      "strict_min_version": "113.0"
    }
  },
  "permissions": [
    "scripting",
    "activeTab"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Comment Searcher",
    "default_icon": {
      "16": "searchicon.png",
      "48": "searchicon.png",
      "128": "searchicon.png"
    }
  },
  "icons": {
    "16": "searchicon.png",
    "48": "searchicon.png",
    "128": "searchicon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*",
        "*://www.reddit.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}