mockup-extract

You can isolate an existing UI component by extracting it into a mockup sandbox, which preserves real source code behavior while enabling safe visual preview and design iteration away from the live app.

Yes, sandboxing a frontend component involves rewriting imports to local mock paths and stubbing external dependencies, allowing the extracted component to render correctly within the isolated mockup environment.

Creating UI design variants is best achieved by pulling the target component into a mockup sandbox, where you can freely iterate and compare visual changes starting from the real codebase without modifying production files.

Yes, a mockup sandbox environment is required to extract and preview UI components, as the process embeds the isolated result as an iframe on the canvas with updated local mock paths for accurate rendering.

Dependency rewriting updates the extracted component's imports to point to local mock paths, effectively stubbing external dependencies so the component can function independently within the mockup sandbox iframe.

The primary limitation is that the component must be compatible with iframe embedding and dependency stubbing; complex components with deeply integrated external state may require extensive import rewriting to function correctly in the mockup sandbox.