import { HttpService } from "@open-pioneer/http";
import { InternalConstructorTag } from "../../utils/InternalConstructorTag";
import { Layer } from "../unions";
import { LayerConfig } from "./LayerConfig";
/**
 * Options passed from the layer factory to the layer constructor.
 *
 * @internal
 */
export interface LayerDependencies {
    httpService: HttpService;
}
/**
 * Interface implemented by layer classes (the prototype, not the instance).
 *
 * - `Config`: the options supported or required as construction parameters.
 * - `LayerType`: the type of the resulting layer instance.
 *
 * @internal
 */
export interface LayerConstructor<Config extends LayerConfig, LayerType extends Layer> {
    prototype: LayerType;
    new (config: Config, deps: LayerDependencies, tag: InternalConstructorTag): LayerType;
}
/**
 * Helper function to verify that the correct tag was used.
 *
 * Returns the layer dependencies passed by the layer factory or returns undefined.
 *
 * Throws an error if an invalid tag was provided.
 */
export declare function getLayerDependencies(deps: LayerDependencies | undefined, tag: InternalConstructorTag | undefined): LayerDependencies | undefined;
export declare const SET_VISIBLE: unique symbol;
export declare const DETACH_FROM_MAP: unique symbol;
export declare const ATTACH_TO_MAP: unique symbol;
export declare const ATTACH_TO_GROUP: unique symbol;
export declare const DETACH_FROM_GROUP: unique symbol;
export declare const GET_RAW_LAYERS: unique symbol;
export declare const GET_PARENT: unique symbol;
export declare const GET_DEPS: unique symbol;
export declare const GET_RAW_SUBLAYERS: unique symbol;
export declare const ATTACH_TO_PARENT: unique symbol;
export declare const SET_LEGEND: unique symbol;
export declare const LAYER_DEPS: unique symbol;
export declare const SET_METADATA_LOAD_INFO: unique symbol;
export declare const DECLARED_AS_BASE_LAYER: unique symbol;