import { Component, type ReactNode } from "react";
import type { GridStackWidget } from "./types";
/**
 * Optional parity with Angular `BaseWidget` for class-based widget components.
 * For functional components, prefer {@link useWidgetSerializer} instead.
 */
export declare abstract class BaseWidget<P extends Record<string, unknown> = Record<string, unknown>> extends Component<P> {
    /** Populated by the grid when restoring from saved layout (subclasses may read in lifecycle). */
    widgetItem?: GridStackWidget;
    serialize(): Record<string, unknown> | undefined;
    /** Optional override — restore widget-specific state from saved layout. */
    deserialize(_: GridStackWidget): void;
    render(): ReactNode;
}
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