Examine source code of Doomscroll Blocker

{
  "manifest_version": 2,
  "name": "Doomscroll Blocker",
  "version": "1.1",
  "description": "Detects doomscrolling and tells you to touch grass.",
  "permissions": [
    "scripting",
    "<all_urls>",
    "storage",
    "tabs"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon48.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "icons": {
    "48": "icon48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5de246cf-b713-42b8-b21d-72ee2cd6d9cb}"
    }
  }
}