import Type from './Type';
import Validation, { IdentifierPath } from '../Validation';
import RuntimeTypeErrorItem from '../errorReporting/RuntimeTypeErrorItem';
export declare type Constructor<T> = (new (...args: any[]) => T) | (abstract new (...args: any[]) => T);
export declare type ClassTypeOption<T> = () => Constructor<T>;
export default class InstanceOfType<T> extends Type<T> {
    typeName: string;
    private _classType;
    get classType(): Constructor<T>;
    constructor(classType: ClassTypeOption<T>);
    errors(validation: Validation, path: IdentifierPath, input: any): Iterable<RuntimeTypeErrorItem>;
    accepts(input: any): input is T;
    get acceptsSomeCompositeTypes(): boolean;
    toString(options?: {
        formatForMustBe?: boolean;
    }): string;
}