Examine source code of ScrollBlock

{
  "manifest_version": 2,
  "name": "ScrollBlocker",
  "version": "1.0",
  "description": "Stops scrolling after a time limit. Solve riddles to unlock or wait.",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/logo16.svg",
      "32": "assets/logo32.svg",
      "64": "assets/logo64.svg"
    },
    "default_title": "Break the loop."
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{29ae3601-d32a-423a-8ba5-726e61e098bf}"
    }
  }
}