similiquedicta/packages/editor/src/Editor/defaultKeyCommands.ts

A Plugin Architecture on top of Draft.JS

import {
  DraftEditorCommand,
  DraftHandleValue,
  EditorState,
  RichUtils,
} from 'draft-js';

export function handleKeyCommand(
  command: DraftEditorCommand | string,
  editorState: EditorState,
  eventTimeStamp: unknown,
  { setEditorState }: { setEditorState(state: EditorState): void }
): DraftHandleValue {
  let newState;
  switch (command) {
    case 'backspace':
    case 'backspace-word':
    case 'backspace-to-start-of-line':
      newState = RichUtils.onBackspace(editorState);
      break;
    case 'delete':
    case 'delete-word':
    case 'delete-to-end-of-block':
      newState = RichUtils.onDelete(editorState);
      break;
    default:
      return 'not-handled';
  }

  if (newState != null) {
    setEditorState(newState);
    return 'handled';
  }

  return 'not-handled';
}