/// <reference types="angular" />
export declare abstract class NgModel implements ng.INgModelController {
    $viewValue: any;
    $modelValue: any;
    $parsers: ng.IModelParser[];
    $formatters: ng.IModelFormatter[];
    $viewChangeListeners: ng.IModelViewChangeListener[];
    $error: any;
    $name: string;
    $touched: boolean;
    $untouched: boolean;
    $validators: ng.IModelValidators;
    $asyncValidators: ng.IAsyncModelValidators;
    $pending: any;
    $pristine: boolean;
    $dirty: boolean;
    $valid: boolean;
    $invalid: boolean;
    $render(): void;
    $setValidity(validationErrorKey: string, isValid: boolean): void;
    $setViewValue(value: any, trigger?: string): void;
    $setPristine(): void;
    $setDirty(): void;
    $validate(): void;
    $setTouched(): void;
    $setUntouched(): void;
    $rollbackViewValue(): void;
    $commitViewValue(): void;
    $isEmpty(value: any): boolean;
}