Examine source code of Poro Tracker

{
  "manifest_version": 2,
  "name": "Poro Tracker",
  "version": "2.0.1",
  "description": "Track your Poro matches, legends, and win rates on TCG Arena",
  "browser_specific_settings": {
    "gecko": {
      "id": "poro-tracker@porotracker",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "https://tcg-arena.fr/*",
    "https://play.riftatlas.com/*",
    "https://russeus.github.io/*"
  ],
  "web_accessible_resources": [
    "icons/icon16.png",
    "icons/icon48.png",
    "icons/icon96.png",
    "icons/icon128.png"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://tcg-arena.fr/play*"
      ],
      "js": [
        "interceptor_bridge.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://tcg-arena.fr/play*"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://play.riftatlas.com/*"
      ],
      "js": [
        "riftatlas_interceptor_bridge.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://play.riftatlas.com/*"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_title": "Poro Tracker",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  }
}