# ExpandButton changelog Read the complete [LICENSE](https://snowui.dev/LICENSE) for the installed version before use. Reviewed against Chinese source SHA-256 `6ccfadc42bb8013d88c343c32a9e514b236abf54974241f00e90934162dda515`. For version differences, check the installed package as well. - 2026-09-21: Aligned the usage guide, source Prop table, and Site / AI reading entry. Documentation only; component behavior is unchanged. ### v1.0.2 (2026-09-02) - Expanded per-Prop descriptions, default fallbacks, and usage boundaries based on the current source. Runtime behavior is unchanged. ### v1.0.1 (2026-08-11) - When there are no extra children, explicitly passes `iconOnly=true` to Button to preserve the default expand-icon button layout. ### v1.0.0 (2026-07-03) - Initial release with specialized Button hosting, expansion semantics, and icon-replacement motion. ### State-button motion duration Default icon switching and Button-host hover / click scaling both take 150ms, aligned with the main default state transition of Checkbox and Switch. Reduced-motion preferences are respected. Explicit external motion configuration still uses the existing public entry points. [Component guide](https://snowui.dev/llms/en/components/expand-button.md) · [Full reference](https://snowui.dev/llms/en/components/expand-button/reference.md)