## Examples

**Example: Implement Centralized Error Handler**
Request: "Create a reusable error handling module for our Node.js API"
Result: Created `lib/error-handler.ts` with `captureError()` function wrapping `Sentry.withScope()`, typed severity levels mapped to Sentry levels, and tag/context/user/fingerprint support.

**Example: Add Breadcrumb Trail for Checkout Flow**
Request: "Add debugging context for our checkout pipeline"
Result: Added structured breadcrumb helpers (`breadcrumb.auth()`, `breadcrumb.db()`, `breadcrumb.http()`, `breadcrumb.business()`) providing a clear timeline leading up to any error in the checkout flow.

**Example: Filter Noise with beforeSend**
Request: "We're getting flooded with ResizeObserver and network errors"
Result: Configured `beforeSend` to drop `ResizeObserver loop` and `Network request failed` errors, plus scrub PII from user context and cookies.

**Example: Fix Incorrect Issue Grouping**
Request: "Payment timeouts from different gateways are being grouped separately"
Result: Added `scope.setFingerprint(['payment-gateway-timeout', gatewayName])` to group all payment timeouts by gateway rather than by stack trace.

### Python Context Manager Pattern

```python
import sentry_sdk
from contextlib import contextmanager

@contextmanager
def sentry_scope(tags=None, context=None, user=None):
    """Reusable scoped context for Sentry events."""
    with sentry_sdk.new_scope() as scope:
        if tags:
            for key, value in tags.items():
                scope.set_tag(key, value)
        if context:
            for ctx_name, ctx_data in context.items():
                scope.set_context(ctx_name, ctx_data)
        if user:
            scope.set_user(user)
        yield scope

# Usage
with sentry_scope(
    tags={"operation": "sync", "source": "salesforce"},
    context={"sync": {"record_count": 500, "batch_id": batch_id}},
):
    perform_sync_operation()
```

### TypeScript Async Error Wrapper

```typescript
import * as Sentry from '@sentry/node';

export function withSentry<T>(
  fn: () => Promise<T>,
  context?: Record<string, unknown>,
): Promise<T> {
  return fn().catch((error) => {
    Sentry.withScope((scope) => {
      if (context) scope.setContext('operation', context);
      Sentry.captureException(error);
    });
    throw error;
  });
}

// Usage
const user = await withSentry(
  () => fetchUserData(userId),
  { userId, operation: 'fetchUser' },
);
```

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