Examine source code of Adyen Test Cards

{
  "manifest_version": 3,
  "name": "Adyen Test Cards",
  "version": "0.0.4",
  "description": "Copy and prefill Adyen test card numbers and other payment methods with a single click.",
  "action": {
    "default_title": "Adyen Test Cards"
  },
  "icons": {
    "16": "images/logo-adyen-A-16.png",
    "48": "images/logo-adyen-A-48.png",
    "128": "images/logo-adyen-A-128.png"
  },
  "background": {
    "scripts": [
      "background-firefox.js"
    ]
  },
  "sidebar_action": {
    "default_panel": "panel.html",
    "default_title": "Adyen Test Cards"
  },
  "permissions": [
    "scripting",
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "https://*/*",
    "http://*/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "/data/*.json"
      ],
      "matches": [
        "https://*/*",
        "http://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "adyen-test-cards@example.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}