/// <reference path="../vendor/react/react.d.ts" />
//@ts-ignore
import { ComponentType, ReactElement, ReactNode } from 'react';
export declare const isString: (value: any) => boolean;
export declare const isNull: (value: any) => boolean;
export declare const isUndefined: (value: any) => value is undefined;
export declare const isObject: (value: any) => boolean;
export declare const noop: () => any;
export declare const returnFalse: () => boolean;
export declare const stringify: (value: any) => string;
export declare const swap: (arr: any[], i: number, j: number) => any[];
export declare const createPortalRoot: (rootId: string, modifier: string) => HTMLDivElement;
export declare const getColumnClass: (columnsAmount: number) => string;
export declare const getRandomString: () => string;
/** Helper providing methods for comparing a type of ReactElement with component constructor */
export declare const componentType: {
    /** Adds a static property `_componentType_` to component constructor. Value of `name` argument must be unique among other component constructors */
    set(Component: ComponentType<any>, name: string): void;
    /** Gets a static property `_componentType_` from component. Used internally by `is` method */
    get(Component: ReactElement<any>['type']): string | undefined;
    /** Compares two components by their `_componentType_` static property */
    is(Component1: ReactElement<any>['type'], Component2: ComponentType<any>): boolean;
};
export type ARIALabelContextType = {
    labelId?: string;
    labelText?: string;
    labelFor?: string;
};
export type ARIALabels = {
    /** Sets aria-label attribute */
    ariaLabel?: string;
    /** Sets aria-labelledby attribute */
    ariaLabelledBy?: string;
};
export declare const getAriaLabel: (label?: string, ariaLabel?: string) => string | undefined;
export declare const setAriaProps: <T extends ARIALabels>(props: T, { labelId, labelText, labelFor }: ARIALabelContextType) => T;
export type Omit<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>>;
export type Exclude<T, U extends T> = T extends U ? never : T;
export type PropsWithDefaults<T, K extends keyof T> = Omit<T, K> & Required<Pick<T, K>> & {
    children?: ReactNode;
};
export type StaticDefaultProps<T, K extends keyof T> = Required<Pick<T, K>>;
export type AnyObject = Record<string, any>;
export type Action<T extends string, P = undefined> = {
    type: T;
    payload: P;
};