[**@blocksuite/block-std**](../../../../@blocksuite/block-std/README.md)

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[BlockSuite API Documentation](../../../../README.md) / [@blocksuite/block-std](../../README.md) / [index](../README.md) / KeymapExtension

# Function: KeymapExtension()

> **KeymapExtension**(`keymapFactory`, `options`?): `ExtensionType`

Create a keymap extension.

## Parameters

### keymapFactory

(`std`) => `Record`\<`string`, `UIEventHandler`\>

Create keymap of the extension.
It should return an object with `keymap` and `options`.

`keymap` is a record of keymap.

### options?

`EventOptions`

`options` is an optional object that restricts the event to be handled.

## Returns

`ExtensionType`

## Example

```ts
import { KeymapExtension } from '@blocksuite/block-std';

const MyKeymapExtension = KeymapExtension(std => {
  return {
    keymap: {
      'mod-a': SelectAll
    }
    options: {
      flavour: 'affine:paragraph'
    }
  }
});
```