import * as React from 'react';
export interface ISignalsBasicExampleState {
    fontSize: 'small' | 'medium' | 'large';
    isDark: boolean;
}
export declare class SignalsBasicExample extends React.Component<{}, ISignalsBasicExampleState> {
    constructor(props: {});
    render(): JSX.Element | null;
    private _onFontSizeChoiceChanged;
    private _onIsDarkChanged;
}