---
title: "CompositionErrorContext"
description: "Provides a way to attach a compose stack trace to a throwable based on a location of compose node
in composition. This context is expected to be used by custom node implementations to attach
diagnostic compose stack traces to exceptions in passes that are not handled by the Compose
runtime (example: measure / layout / draw in Compose UI).

Compose runtime automatically appends information about exceptions that happen in composition and
effects."
type: "interface"
---

<div class='type'>Interface</div>


<a id='references'></a>

<div class='sourceset sourceset-common'>Common</div>



```kotlin
public sealed interface CompositionErrorContext
```


Provides a way to attach a compose stack trace to a throwable based on a location of compose node
in composition. This context is expected to be used by custom node implementations to attach
diagnostic compose stack traces to exceptions in passes that are not handled by the Compose
runtime (example: measure / layout / draw in Compose UI).

Compose runtime automatically appends information about exceptions that happen in composition and
effects.


## Functions

```kotlin
public fun Throwable.attachComposeStackTrace(composeNode: Any): Boolean
```


Attaches a Compose stack trace to a throwable as a suppressed `DiagnosticComposeException`.
Has no effect if:
- Throwable already contains a suppressed `DiagnosticComposeException`
- `composeNode` is not found in composition
- composition contains no source information (e.g. in minified builds)

#### Parameters

| | |
| --- | --- |
| composeNode | closest node to where exception was originally thrown |


#### Returns

| | |
| --- | --- |
|  | true if the exception was attached, false otherwise |