Examine source code of Doomscroll Blocker

{
  "manifest_version": 3,
  "name": "Doomscroll Blocker",
  "description": "put the youtube doomscrolling to an end",
  "version": "1.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "doomscrollblocker@tch1b0.de",
      "strict_min_version": "109.0"
    }
  },
  "icons": {
    "100": "logo.png"
  },
  "action": {
    "default_icon": "logo.png",
    "default_title": "Doomscroll Blocker",
    "default_popup": "popup/configure.html"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "tabs"
  ],
  "host_permissions": [
    "https://www.youtube.com/"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  }
}