import { PipeTransform } from '@angular/core';
import { ValidationErrors } from '@angular/forms';
import * as i0 from "@angular/core";
export declare class NgxErrorMessagePipe implements PipeTransform {
    private readonly errorMessageService;
    private cachedData;
    private cachedError;
    private cachedLang;
    transform(value: ValidationErrors | null, lang?: string, patternKey?: string, fieldName?: string): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgxErrorMessagePipe, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<NgxErrorMessagePipe, "ngxErrorMessage", true>;
}