import * as React from 'react';
import { Observable } from 'rxjs';
declare const initialValue: unique symbol;
interface Props<T> {
    readonly props?: any[];
    readonly createStream: () => Observable<T>;
    readonly children: (props: T) => React.ReactNode;
}
interface State<T> {
    readonly value: T | typeof initialValue;
}
export declare class FromStream<T> extends React.Component<Props<T>, State<T>> {
    state: State<T>;
    private mutableSubscription;
    private mutableMounted;
    constructor(props: Props<T>);
    componentWillUnmount(): void;
    componentDidUpdate(prevProps: any): void;
    render(): React.ReactNode;
    private subscribe;
    private _setValue;
    private unsubscribe;
}
export {};