import { ChangeEvent } from 'react';
import { Dict } from './types';
export declare function isNumber(value: any): value is number;
export declare const isNotNumber: (value: any) => boolean;
export declare function isNumeric(value: any): boolean;
export declare function isArray<T>(value: any): value is Array<T>;
export declare const isEmptyArray: (value: any) => boolean;
export declare function isFunction(value: any): value is (...args: any[]) => any;
export declare const isDefined: (value: any) => boolean;
export declare const isUndefined: (value: any) => value is undefined;
export declare const isNull: (value: any) => value is null;
export declare const isNullOrUndefined: (value: any) => value is null | undefined;
export declare const isObject: (value: any) => value is Dict<any>;
export declare const isEmptyObject: (value: any) => boolean;
export declare function isNotEmptyObject(value: any): any;
export declare function isString(value: any): value is string;
export declare function isInputEvent(value: any): value is ChangeEvent;
export declare const isEmpty: (value: any) => boolean;
export declare const __DEV__: boolean;
export declare function isRefObject(val: any): val is {
    current: any;
};