import React from 'react';
interface TopAppBarProminentToShortCollapsedScreenshotTestState {
    isPhone: boolean;
}
declare class TopAppBarProminentToShortCollapsedScreenshotTest extends React.Component<{}, TopAppBarProminentToShortCollapsedScreenshotTestState> {
    state: {
        isPhone: boolean;
    };
    componentDidMount(): void;
    shouldComponentUpdate(_: {}, nextState: TopAppBarProminentToShortCollapsedScreenshotTestState): boolean;
    componentWillUnmount(): void;
    updateTopAppBarVariant: () => void;
    render(): JSX.Element;
}
export default TopAppBarProminentToShortCollapsedScreenshotTest;