# engine/view/observer/compositionobserver

module

<a id="classes">

## Classes

<a id="class-CompositionObserver">

### [CompositionObserver](module_engine_view_observer_compositionobserver-CompositionObserver.md)

<a id="interfaces">

## Interfaces

<a id="interface-ViewDocumentCompositionEventData">

### `ViewDocumentCompositionEventData`

<a id="type-definitions">

## Type Definitions

<a id="typedef-ViewDocumentCompositionEndEvent">

### `ViewDocumentCompositionEndEvent`

<a id="typedef-ViewDocumentCompositionStartEvent">

### `ViewDocumentCompositionStartEvent`

<a id="typedef-ViewDocumentCompositionUpdateEvent">

### `ViewDocumentCompositionUpdateEvent`

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Full index of the CKEditor 5 API reference: [llms.txt](llms.txt)