import { InjectionToken } from '@angular/core';
import * as i0 from "@angular/core";
import * as i1 from "./directives/exposeVariable.directive";
import * as i2 from "@angular/cdk/bidi";
export declare const MATERIAL_SANITY_CHECKS: InjectionToken<boolean>;
export declare function MATERIAL_SANITY_CHECKS_FACTORY(): boolean;
export declare class NkCommonModule {
    private _sanityChecksEnabled;
    private _hasDoneGlobalChecks;
    private _document;
    private _window;
    constructor(_sanityChecksEnabled: boolean);
    private _areChecksEnabled;
    private _isTestEnv;
    private _checkDoctypeIsDefined;
    static ɵfac: i0.ɵɵFactoryDeclaration<NkCommonModule, [{ optional: true; }]>;
    static ɵmod: i0.ɵɵNgModuleDeclaration<NkCommonModule, [typeof i1.ExposeVariableDirective], [typeof i2.BidiModule], [typeof i2.BidiModule, typeof i1.ExposeVariableDirective]>;
    static ɵinj: i0.ɵɵInjectorDeclaration<NkCommonModule>;
}