import { TileSize } from "./enum/TileSize";
/**
 * The state of a `Tiles` component, containing positions and labels.
 */
export declare class State {
    groups: Map<string, {
        index: number;
        label: string;
    }>;
    tiles: Map<string, {
        size: TileSize;
        x: number;
        y: number;
        group: string;
    }>;
    /**
     * Constructs `State` from JSON. The `object` argument
     * may be a JSON serialized string or a plain object.
     */
    static fromJSON(object: any): State;
    /**
     * Returns a plain object (**not** a string).
     */
    toJSON(): any;
    clear(): void;
    set(state: State): void;
    clone(): State;
    groupExists(id: string): boolean;
    tileExists(id: string): boolean;
}