import { Object3D, WonderlandEngine } from "@wonderlandengine/api";
import { EasyTuneVariables } from "./easy_tune_variables.js";
import { EasyTuneWidget } from "./easy_tune_widgets/easy_tune_widget.js";
export declare function getEasyTuneVariables(engine?: Readonly<WonderlandEngine> | null): EasyTuneVariables | null;
export declare function setEasyTuneVariables(easyTuneVariables: EasyTuneVariables, engine?: Readonly<WonderlandEngine> | null): void;
export declare function removeEasyTuneVariables(engine?: Readonly<WonderlandEngine> | null): void;
export declare function hasEasyTuneVariables(engine?: Readonly<WonderlandEngine> | null): boolean;
export declare function getEasyTuneTarget(engine?: Readonly<WonderlandEngine> | null): Object3D | null;
export declare function setEasyTuneTarget(easyTuneTarget: Object3D, engine?: Readonly<WonderlandEngine> | null): void;
export declare function removeEasyTuneTarget(engine?: Readonly<WonderlandEngine> | null): void;
export declare function hasEasyTuneTarget(engine?: Readonly<WonderlandEngine> | null): boolean;
export declare function getEasyTuneWidget(engine?: Readonly<WonderlandEngine> | null): EasyTuneWidget | null;
export declare function setEasyTuneWidget(easyTuneWidget: EasyTuneWidget, engine?: Readonly<WonderlandEngine> | null): void;
export declare function removeEasyTuneWidget(engine?: Readonly<WonderlandEngine> | null): void;
export declare function hasEasyTuneWidget(engine?: Readonly<WonderlandEngine> | null): boolean;