lexical/packages/lexical-history

@lexical/history

This package contains history helpers for Lexical.

Methods

registerHistory

Registers necessary listeners to manage undo/redo history stack and related editor commands. It returns unregister callback that cleans up all listeners and should be called on editor unmount.

function registerHistory(
  editor: LexicalEditor,
  externalHistoryState: HistoryState,
  delay: number,
): () => void

Commands

History package handles UNDO_COMMAND, REDO_COMMAND and CLEAR_HISTORY_COMMAND commands. It also triggers CAN_UNDO_COMMAND and CAN_REDO_COMMAND commands when history state is changed. These commands could be used to work with history state:

import {UNDO_COMMAND, REDO_COMMAND} from 'lexical';

<Toolbar>
  <Button onClick={() => editor.dispatchCommand(UNDO_COMMAND)}>Undo</Button>
  <Button onClick={() => editor.dispatchCommand(REDO_COMMAND)}>Redo</Button>
</Toolbar>;