import { ViewContainerRef, ApplicationRef, Compiler, ComponentRef } from '@angular/core';
/**
 * @see https://github.com/valor-software/ng2-bootstrap/blob/development/components/utils/components-helper.service.ts
 * for more details
 */
export declare class ComponentsHelperService {
    private applicationRef;
    private compiler;
    root: ViewContainerRef;
    /**
     * In some cases, like using ngUpgrade,
     * you need to explicitly set view container ref
     * to made this method working you need to add:
     * ```typescript
     *  @Component({
     *     selector: 'my-app',
     *     ...
     *   })
     *  export class MyApp {
     *    constructor(componentsHelper:ComponentsHelper, viewContainerRef: ViewContainerRef) {
     *        // A Default view container ref, usually the app root container ref.
     *        // Has to be set manually until we can find a way to get it automatically.
     *        componentsHelper.setRootViewContainerRef(viewContainerRef)
     *      }
     *  }
     * ```
     */
    setRootViewContainerRef(value: ViewContainerRef): void;
    /**
     * This is a name conventional class to get application root view component ref
     * return {ViewContainerRef} - application root view component ref
     */
    getRootViewContainerRef(): ViewContainerRef;
    getComponentRef(module: any, component: any, inputs?: {}): ComponentRef<any>;
    constructor(applicationRef: ApplicationRef, compiler: Compiler);
}