import { AbstractControl, FormGroupDirective, NgControl, NgForm } from "@angular/forms";
import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
export interface RealsoftErrorState extends ErrorStateMatcher {
}
export declare class ErrorStateMatcher {
    isErrorState(control: AbstractControl | null, form: FormGroupDirective | NgForm | null): boolean;
    static ɵfac: i0.ɵɵFactoryDeclaration<ErrorStateMatcher, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ErrorStateMatcher>;
}
export declare class ErrorState {
    private _defaultMatcher;
    ngControl: NgControl | null;
    private _parentFormGroup;
    private _parentForm;
    private _stateChanges;
    errorState: boolean;
    matcher: ErrorStateMatcher;
    constructor(_defaultMatcher: ErrorStateMatcher | null, ngControl: NgControl | null, _parentFormGroup: FormGroupDirective | null, _parentForm: NgForm | null, _stateChanges: Subject<void>);
    updateErrorState(): void;
}