import { OnInit } from '@angular/core';
import { ClassNames, ErrorWhenType } from './ngx-error-message-interfaces';
import * as i0 from "@angular/core";
export declare class NgxErrorMessageDirective implements OnInit {
    set ngxErrorMessage(value: string);
    classNames: ClassNames;
    patternKey?: string;
    when: ErrorWhenType | ErrorWhenType[];
    private fieldName;
    private readonly ngControl;
    private readonly container;
    private componentRef?;
    ngOnInit(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgxErrorMessageDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NgxErrorMessageDirective, "[ngxErrorMessage]", never, { "ngxErrorMessage": { "alias": "ngxErrorMessage"; "required": false; }; "classNames": { "alias": "classNames"; "required": false; }; "patternKey": { "alias": "patternKey"; "required": false; }; "when": { "alias": "when"; "required": false; }; }, {}, never, never, true, never>;
}