Answer: The best alternative is to upgrade to the latest version of Prettier, which now has built‑in support for formatting styled‑components without needing prettier‑plugin‑styled‑components.

Explanation: Recent versions of Prettier (from 1.15 onward) include native support for formatting tagged template literals used by styled‑components. This means you no longer need the separate plugin that was previously used to format your CSS‑in‑JS code. Simply remove prettier‑plugin‑styled‑components from your project, upgrade Prettier, and your styled‑components should be formatted correctly in your React 19 project.

If you use VS Code, you can also consider installing the “vscode‑styled‑components” extension for enhanced syntax highlighting and IntelliSense, but for formatting Prettier’s built‑in functionality is sufficient.