> ## Documentation Index
> Fetch the complete documentation index at: https://ancplua.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# AL0096 - Enable EventSourceSupport for AOT with telemetry

> AOT trims EventSource by default, breaking telemetry

Source: [Al0096EnableEventSourceSupportAnalyzer.cs](https://github.com/ANcpLua/ANcpLua.Analyzers/blob/main/src/ANcpLua.Analyzers/Analyzers/Al0096EnableEventSourceSupportAnalyzer.cs)

## Description

Native AOT trims `EventSource` by default. If your application uses OpenTelemetry or other EventSource-based diagnostics, you must enable `EventSourceSupport` in the project file.

## Bad Code

```xml theme={null}
<PublishAot>true</PublishAot>
<!-- EventSourceSupport not set, EventSource is trimmed -->
```

## Good Code

```xml theme={null}
<PublishAot>true</PublishAot>
<EventSourceSupport>true</EventSourceSupport>
```

## Properties

* **Category**: Configuration
* **Severity**: Warning
* **Enabled by default**: True
* **Code fix available**: False

## Configuration

```editorconfig theme={null}
dotnet_diagnostic.AL0096.severity = warning
```