---
title: "toTextFieldBuffer"
description: "Creates a temporary, mutable [TextFieldBuffer] representing the current state of this
[TextFieldState].

Use a [TextFieldBuffer] to:
* Apply transformations for testing purposes
* Preview how the TextField would render with a specific [OutputTransformation]

This is similar to calling [TextFieldState.edit], but without committing the changes back to the
[TextFieldState].

**Important:** A [TextFieldBuffer] is intended for short-term use. Let the garbage collector
dispose of it when you're finished to avoid unnecessary memory usage."
type: "function"
---

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


<a id='references'></a>
<div class='sourceset sourceset-common'>Common</div>


```kotlin
fun TextFieldState.toTextFieldBuffer(): TextFieldBuffer
```


Creates a temporary, mutable `TextFieldBuffer` representing the current state of this
`TextFieldState`.

Use a `TextFieldBuffer` to:
* Apply transformations for testing purposes
* Preview how the TextField would render with a specific `OutputTransformation`

This is similar to calling `TextFieldState.edit`, but without committing the changes back to the
`TextFieldState`.

**Important:** A `TextFieldBuffer` is intended for short-term use. Let the garbage collector
dispose of it when you're finished to avoid unnecessary memory usage.



## Code Examples
### TextFieldStateApplyOutputTransformation
```kotlin
@Suppress("UNUSED_VARIABLE")
@Composable
fun TextFieldStateApplyOutputTransformation() {
    val state = TextFieldState("Hello, World")
    val outputTransformation = OutputTransformation { insert(0, "> ") }
    val buffer = state.toTextFieldBuffer()
    with(outputTransformation) { buffer.transformOutput() }
    val transformedText = buffer.asCharSequence()
    val transformedSelection = buffer.selection
}
```