Examine source code of Pause, Reflect

{
  "manifest_version": 3,
  "name": "Pause, Reflect",
  "version": "3.0.0",
  "description": "Add a short pause before your distractions for some time to reflect and check-in with yourself.",
  "permissions": [
    "tabs",
    "storage",
    "scripting",
    "notifications",
    "declarativeNetRequest"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.pausereflect.app/*"
      ],
      "js": [
        "extension-content-script.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "all-urls-content-script.js"
      ],
      "match_about_blank": true,
      "all_frames": true
    }
  ],
  "options_page": "options/options.html",
  "host_permissions": [
    "*://*/*"
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "onpage-overlay/index.js",
        "assets/icon-128.png",
        "assets/icon-light-128.png"
      ]
    }
  ],
  "externally_connectable": {
    "matches": [
      "*://www.pausereflect.app/*"
    ]
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "assets/icon-16.png",
      "32": "assets/icon-32.png",
      "48": "assets/icon-48.png",
      "128": "assets/icon-128.png"
    }
  },
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "background": {
    "scripts": [
      "worker.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pausereflect@pausereflect.app",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "personallyIdentifyingInfo"
        ]
      }
    }
  }
}