Run results for: JSON-copy vs structuredClone on small-ish simple structures

Test name	Executions per second
✓ JSON-copy	189,580 Ops/sec
structuredClone	83,784 Ops/sec
Script Preparation code:
let copy = null;
const input = {
  "id": "user-8374",
  "name": "Alexandra Chen",
  "email": "alexandra.chen@example.com",
  "accountBalance": 15847.92,
  "createdAt": "2024-03-15T08:23:45Z",
  "isActive": true,
  "metadata": {
    "region": "us-west-2",
    "subscriptionTier": "premium",
    "monthlySpend": 249.5,
    "registrationSource": "mobile-app",
    "preferences": {
      "emailNotifications": true,
      "theme": "dark",
      "language": "en-US",
      "timezone": "America/Los_Angeles",
      "refreshRate": 30,
      "customSettings": {
        "dashboardLayout": "compact",
        "chartType": "line",
        "dataPoints": 120,
        "enablePredictions": true,
        "predictionConfidence": 0.87,
        "autoRefresh": true,
        "alerts": {
          "threshold": 5000,
          "escalationLevel": 2,
          "severity": "critical",
          "notifyAdmins": true,
          "delaySeconds": 300.5
        }
      }
    }
  },
  "transactions": [
    {
      "txId": "tx-001",
      "amount": 127.43,
      "currency": "USD",
      "timestamp": "2024-06-20T14:32:10Z",
      "category": "subscription",
      "vendor": "CloudServices Inc",
      "details": {
        "invoiceNumber": "INV-2024-06-0847",
        "taxRate": 0.0825,
        "finalAmount": 137.93,
        "paymentMethod": "credit_card"
      }
    },
    {
      "txId": "tx-002",
      "amount": 89.99,
      "currency": "USD",
      "timestamp": "2024-06-18T09:15:22Z",
      "category": "software",
      "vendor": "DevTools Pro",
      "details": {
        "invoiceNumber": "INV-2024-06-0848",
        "taxRate": 0.0825,
        "finalAmount": 97.43,
        "paymentMethod": "paypal"
      }
    },
    {
      "txId": "tx-003",
      "amount": 2500,
      "currency": "USD",
      "timestamp": "2024-06-10T11:47:33Z",
      "category": "enterprise",
      "vendor": "Enterprise Solutions Ltd",
      "details": {
        "invoiceNumber": "INV-2024-06-0849",
        "taxRate": 0.1,
        "finalAmount": 2750,
        "paymentMethod": "bank_transfer"
      }
    }
  ],
  "analytics": {
    "pageViews": 4582,
    "uniqueVisitors": 1247,
    "conversionRate": 0.1234,
    "bounceRate": 0.3456,
    "avgSessionDuration": 342.78,
    "campaigns": [
      {
        "name": "Summer2024",
        "impressions": 25000,
        "clicks": 1523,
        "ctr": 0.06092,
        "spend": 4500.75,
        "revenue": 18234.5
      },
      {
        "name": "ReTargeting",
        "impressions": 15000,
        "clicks": 892,
        "ctr": 0.05947,
        "spend": 2100.25,
        "revenue": 9876.33
      }
    ]
  },
  "security": {
    "lastPasswordChange": "2024-05-12T16:45:00Z",
    "mfaEnabled": true,
    "loginAttempts": 3,
    "failedLogins": 0,
    "riskScore": 0.12,
    "ipWhitelist": [
      "192.168.1.100",
      "10.0.0.50",
      "203.45.67.89"
    ]
  }
}