import "../../CommonImports";
import "../../Core/core.css";
import * as React from "react";
import { IObserverProps } from "./Observer.Props";
export interface IObserverState {
    values: {
        [propName: string]: any;
    };
    oldProps: IObserverProps;
}
/**
 * Handles subscription to properties that are IObservableValues, so that components don't have to handle on their own.
 *
 * Usage:
 *
 * <Observer myObservableValue={observableValue} className='foo'>
 *     <MyComponent myObservableValue='' />
 * </Observer>
 *
 * Your component will get re-rendered with the new value of myObservableValue whenever that value changes.
 * Additionally, any additional props set on the Observer will also get passed down.
 */
export declare class Observer extends React.Component<IObserverProps, IObserverState> {
    static getDerivedStateFromProps(props: Readonly<IObserverProps>, state: Readonly<IObserverState>): Partial<IObserverState>;
    private subscribedProps;
    private subscriptions;
    constructor(props: Readonly<IObserverProps>);
    render(): JSX.Element;
    componentDidMount(): void;
    componentDidUpdate(): void;
    componentWillUnmount(): void;
    subscribe(propName: string, props: IObserverProps): void;
    unsubscribe(propName: string, props: IObserverProps): void;
    private updateSubscriptionsAndStateAfterRender;
    private onValueChanged;
}