preact

@prosemirror-adapter/preact

Preact adapter for ProseMirror.

Example

You can view the example in prosemirror-adapter/examples/preact.

Getting Started

Install the package

npm install @prosemirror-adapter/preact

Wrap your component with the provider

import { ProsemirrorAdapterProvider } from '@prosemirror-adapter/preact'
import { StrictMode } from 'preact/compat'
import { render } from 'preact'

import { YourAwesomeEditor } from './YourAwesomeEditor'

const root = document.querySelector('#app')

if (!root) throw new Error('Missing #app element')

render(
  <StrictMode>
    <ProsemirrorAdapterProvider>
      <YourAwesomeEditor />
    </ProsemirrorAdapterProvider>
  </StrictMode>,
  root,
)

Building Node Views

import { useNodeViewContext } from '@prosemirror-adapter/preact'

export function Paragraph() {
  const { contentRef, selected } = useNodeViewContext()

  return <div ref={contentRef} style={{ outline: selected ? '2px solid #3b82f6' : 'none' }} />
}

Bind the component with ProseMirror:

import { useNodeViewFactory } from '@prosemirror-adapter/preact'
import { useCallback } from 'preact/hooks'
import { EditorView } from 'prosemirror-view'

import { Paragraph } from './Paragraph'

export function YourAwesomeEditor() {
  const nodeViewFactory = useNodeViewFactory()

  const editorRef = useCallback((element: HTMLDivElement | null) => {
    if (!element || element.firstChild) return

    new EditorView(element, {
      state: YourProsemirrorEditorState,
      nodeViews: {
        paragraph: nodeViewFactory({
          component: Paragraph,
          as: 'div',
          contentAs: 'p',
        }),
      },
    })
  }, [])

  return <div ref={editorRef} />
}

Mark, Plugin, and Widget Views

The same hooks available in the React package are exposed for Preact:

• useMarkViewFactory
• usePluginViewFactory
• useWidgetViewFactory
• useMarkViewContext
• usePluginViewContext
• useWidgetViewContext

Each hook mirrors the behaviour of its React counterpart, providing idiomatic Preact components that stay in sync with the underlying ProseMirror view.

API Surface

export { ProsemirrorAdapterProvider } from '@prosemirror-adapter/preact'
export { useNodeViewFactory, useNodeViewContext, createNodeViewContext } from '@prosemirror-adapter/preact/nodeView'
export { useMarkViewFactory, useMarkViewContext, createMarkViewContext } from '@prosemirror-adapter/preact/markView'
export {
  usePluginViewFactory,
  usePluginViewContext,
  createPluginViewContext,
} from '@prosemirror-adapter/preact/pluginView'
export {
  useWidgetViewFactory,
  useWidgetViewContext,
  createWidgetViewContext,
} from '@prosemirror-adapter/preact/widgetView'

Refer to the React adapter documentation for a deeper dive—only the UI layer changes.

Contributing

Follow our contribution guide to learn how to contribute to prosemirror-adapter.

License

MIT