/* Copyright IBM Corp. 2018 */
import { MonoTypeOperatorFunction } from 'rxjs';
import { ComponentTypeRef } from './../../ng-api';
export declare const KEY_DEBUG = "$$DEBUG";
declare const _assign: {
    <T, U>(target: T, source: U): T & U;
    <T, U, V>(target: T, source1: U, source2: V): T & U & V;
    <T, U, V, W>(target: T, source1: U, source2: V, source3: W): T & U & V & W;
    (target: object, ...sources: any[]): any;
};
declare const _defineProperties: (o: any, properties: PropertyDescriptorMap & ThisType<any>) => any;
declare const _keys: (o: {}) => string[];
declare function _perfCloneDeep(aValue: any): any;
declare function _perfDeepEquals(aLeft: any, aRight: any): boolean;
declare function _concatArguments(aDst: any[], aArgs: IArguments): any[];
/**
 * Tries to decode the classname
 *
 * @param aThis     the instance pointer
 * @param aDefault  default name
 */
declare function _getClassName(aThis: any, aDefault?: string): string;
declare function _isEqualComponentTypeRef(aLeft: ComponentTypeRef<any>, aRight: ComponentTypeRef<any>): boolean;
export declare const opDistinctComponentTypeRef: MonoTypeOperatorFunction<ComponentTypeRef<any>>;
export { _keys as keys, _perfDeepEquals as deepEquals, _perfCloneDeep as cloneDeep, _concatArguments as concatArgs, _defineProperties as defineProperties, _isEqualComponentTypeRef as isEqualComponentTypeRef, _assign as assign, _getClassName as getClassName };