/**
 * Handles hot module replacement (HMR) updates for packages.
 *
 * This function is called when the development server notifies the client that a package
 * has been updated. It performs the following steps:
 *
 * 1. **Check which modules are loaded**: Uses Performance API to determine which entry points
 *    from the package are actually loaded on the current page.
 *
 * 2. **Re-import updated modules**: Dynamically imports the new versions of loaded modules
 *    using their updated bundle URLs (with new hash).
 *
 * 3. **Trigger React Refresh**: If React Refresh is available, triggers component updates
 *    while preserving component state. Falls back to full page reload otherwise.
 *
 * The process ensures:
 * - Only relevant modules are updated (skip modules not loaded on current page)
 * - React component state is preserved when possible
 * - Graceful fallback to full reload if React Refresh fails
 *
 * @param data - The package update payload containing package name, version, and entry points
 *
 * @example
 * // This is typically called by the WebSocket message handler:
 * socket.on('package-update', (data) => {
 *   await handlePackageUpdate(data);
 * });
 */
export declare const handlePackageUpdate: (data: unknown) => Promise<void>;
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