Examine source code of Sage - StopDoomScrolling

{
  "manifest_version": 3,
  "name": "Sage",
  "version": "1.2.1",
  "description": "Stay focused. Block doomscrolling. Achieve your goals.",
  "browser_specific_settings": {
    "gecko": {
      "id": "focusguard@electronicsugar.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "service_worker": "background/background.js",
    "type": "module"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "webNavigation",
    "alarms"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "*://chrome.google.com/webstore/*",
        "*://chromewebstore.google.com/*",
        "*://addons.mozilla.org/*",
        "*://microsoftedge.microsoft.com/addons/*"
      ],
      "js": [
        "lib/urlMatcher.js",
        "content/universalBlocker.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "lib/theme.js",
        "content/content-common.js",
        "content/content-youtube.js"
      ],
      "css": [
        "content/overlay.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.instagram.com/*"
      ],
      "js": [
        "lib/theme.js",
        "content/content-common.js",
        "content/content-instagram.js"
      ],
      "css": [
        "content/overlay.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "lib/urlMatcher.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}