# LineHeight

Retains the legacy CSS lineHeight attribute. It does not express Word paragraph line spacing; use WordParagraph for that model.

Retains the legacy CSS lineHeight attribute. It does not express Word paragraph line spacing; use WordParagraph for that model.

`@quirekit/extension-text-style` · **MIT**

## Editor compatibility
Layer：**Shared document capability**
| Editor | Status | Assembly and boundaries |
| --- | --- | --- |
| Classic | Unverified | A complete integration and verification path for this entry has not been established for this product. A public Core export does not imply product presentation, controls or file support. |
| Block | Unverified | A complete integration and verification path for this entry has not been established for this product. A public Core export does not imply product presentation, controls or file support. |

“Supported” means the product assembly above exists; interaction, host services and file formats retain their own conditions. See [status and integration rules](/en/plugins/compatibility). Licensing is shown separately.

## Installation

```sh
pnpm add @quirekit/extension-text-style@alpha
```

Install in Editor extensions. The host supplies a view, container and persistence; see [Quick start](/en/guide/quick-start).

```ts
import { LineHeight } from '@quirekit/extension-text-style'
```

Use compatible versions available from your distribution source. This site uses the Alpha workspace. License labels come from package metadata; see [support and licensing](/en/support).

## Integration by editor

These snippets use an existing host element named element. The host owns container sizing and persistence; call instance.destroy() on teardown. Avoid duplicating preset capabilities and supply required host ports before installation.

### Classic

A complete integration and verification path for this entry has not been established for this product. A public Core export does not imply product presentation, controls or file support.

### Block

A complete integration and verification path for this entry has not been established for this product. A public Core export does not imply product presentation, controls or file support.

## Configuration

These are extension-level defaults. Presets can override them; they are distinct from current document attributes. See [configuration](/en/plugins/configuration).

### types

Mark types where the attribute can be applied.

Type：`string[]`

Default：`["textStyle"]`

## Commands and runtime

These commands are supplied directly by this extension. Availability depends on the installed schema, selection and protection policy; query editor.can() first.

| Command | Parameter signature |
| --- | --- |
| `setLineHeight` | `setLineHeight(lineHeight: string \| number)` |
| `unsetLineHeight` | `unsetLineHeight()` |

These are parameter signatures. See [commands and controls](/en/build/commands) to connect UI while retaining one transaction/history authority.

## Other public exports

- `lineHeightExtension` · `@quirekit/extension-text-style`

## Next steps

Return to [all plugins](/en/plugins), or read [configuration](/en/plugins/configuration) to distinguish options, attributes and commands.

See [extension development](/en/build/extension) for custom capabilities and [Build a product](/en/build) for complete hosting.