import React from 'react';
import { GroupBase } from 'react-select';
import { UseValidationProps, Validator } from '@interface-technologies/iti-react-core';
import { CommonSelectProps } from './CommonSelectProps';
import { SelectOption } from './SelectOption';
/** The value type for [[`ValidatedAsyncSelect`]]. */
export type AsyncSelectValue = SelectOption | null;
export interface ValidatedAsyncSelectProps extends CommonSelectProps, UseValidationProps<AsyncSelectValue> {
    loadOptions: (inputValue: string) => Promise<SelectOption[] | GroupBase<SelectOption>[]>;
    noOptionsMessage?: (obj: {
        inputValue: string;
    }) => string | null;
}
/**
 * A validated dropdown component based on `react-select` that loads its
 * options via an API call.
 *
 * This component is expensive to render so use `React.memo` when necessary.
 */
export declare const ValidatedAsyncSelect: React.NamedExoticComponent<ValidatedAsyncSelectProps>;
declare function required(): Validator<AsyncSelectValue>;
export declare const AsyncSelectValidators: {
    required: typeof required;
};
export {};