import { Compiler, ComponentFactoryResolver, Injector } from '@angular/core';
import { Observable } from 'rxjs';
import { CustomElementComponentSelector, CustomElementModuleSelector } from './elements-registry';
export declare class ElementsLoaderService {
    private _injector;
    private _compiler;
    private _componentFactoryResolver;
    /** Map of unregistered custom elements and their respective module to load. */
    private _elementsToLoad;
    constructor(_injector: Injector, _compiler: Compiler, _componentFactoryResolver: ComponentFactoryResolver);
    /**
     * Queries the document element for any custom elements that have not yet been registered with
     * the browser. Custom elements that are registered will be removed from the list of unregistered
     * elements so that they will not be queried in subsequent calls. Compile the module and its component
     * to be registered as custom elements.
     * This function is used in JIT mode
     */
    loadContainingCustomElements(data: CustomElementModuleSelector | CustomElementModuleSelector[]): Observable<any>;
    /**
     * Queries the document element for any custom elements that have not yet been registered with
     * the browser. Custom elements that are registered will be removed from the list of unregistered
     * elements so that they will not be queried in subsequent calls. Component will be registered as
     * custom elements.
     * This function is used in AOT mode
     */
    registerContainingCustomElements(data: CustomElementComponentSelector | CustomElementComponentSelector[]): Observable<any>;
    /**
     * Main process to load custom elements
     */
    private _customElements;
    /**
     * Registers the custom element defined on the WithCustomElement module factory
     */
    private _register;
    /**
     * Create custom element for current selector
     */
    private _createCustomElement;
    /**
     * Compile module and all components to retrieve the component and the injector for custom element creation.
     * This function is only used in JIT mode.
     */
    private _componentAndInjectorFromCompiledModule;
    /**
     * Resolve component to get module injector  for custom element creation.
     * This function is only used in AOT mode.
     */
    private _componentAndInjectorFromComponentFactory;
}