import SkyLight from "../display/lights/SkyLight";
export declare const skyLightSystem: {
    add: ((item: SkyLight, initData?: void | Record<string, any> | undefined) => false | import("@lincode/promiselikes").Cancellable) | ((item: SkyLight, initData?: void | Record<string, any> | undefined) => boolean);
    delete: ((item: SkyLight) => false | import("@lincode/promiselikes").Cancellable | undefined) | ((item: SkyLight) => boolean);
};