import { PipeTransform } from '@angular/core'; import { DestroyableContainer } from '@ts-core/common'; import { LanguageService } from '@ts-core/frontend/language'; export declare class LanguagePipeHas extends DestroyableContainer implements PipeTransform { private language; private key; private _value; constructor(language: LanguageService); private valueUpdate; transform(key: string): boolean; destroy(): void; }