History extension

Undo and redo document changes with familiar keyboard shortcuts.

Track up to 100 editing actions. Press Cmd+Z to undo, Cmd+Shift+Z to redo.

How it works

• Automatic grouping - Changes within 500ms are grouped as one action
• Deep history - Stores up to 100 undo steps by default
• Smart tracking - Preserves selection and cursor position

Use case

• Mistake recovery - Quickly undo accidental deletions or changes
• Experimentation - Try different edits knowing you can revert
• User confidence - Standard feature users expect in any editor

Options

Configure the extension behavior:

depth · number · default: "100"

Maximum undo/redo steps to remember

newGroupDelay · number · default: "500"

Milliseconds to wait before starting a new history group

Commands

undo

Undo the last action

Groups changes within the newGroupDelay window

Example:

Usage

editor.commands.undo()

import { SuperDoc } from 'superdoc';
import 'superdoc/style.css';

const superdoc = new SuperDoc({
  selector: '#editor',
  document: yourFile,
  onReady: (superdoc) => {
    const editor = superdoc.activeEditor;
    editor.commands.undo()
  },
});

redo

Redo the last undone action

Only available after an undo action

Example:

Usage

editor.commands.redo()

import { SuperDoc } from 'superdoc';
import 'superdoc/style.css';

const superdoc = new SuperDoc({
  selector: '#editor',
  document: yourFile,
  onReady: (superdoc) => {
    const editor = superdoc.activeEditor;
    editor.commands.redo()
  },
});

Keyboard shortcuts

Command	Shortcut	Description
undo()	⌘/Ctrl-z	Undo last action
redo()	⌘/Ctrl-Shift-z	Redo last action
redo()	⌘/Ctrl-y	Redo last action (alternative)

Source code