import { FormControl, FormGroup, FormGroupDirective, NgForm } from '@angular/forms';
import { ErrorStateMatcher } from '@angular/material/core';
export declare class NumericRangeStateMatcher implements ErrorStateMatcher {
    isErrorState(control: FormControl | null, form: FormGroup | FormGroupDirective | NgForm | null, minimumControlName?: string, maximumControlName?: string): boolean;
    private isControlTouchedInvalid;
}