Rocket.Chat/apps/meteor/client/components/BurgerMenu/Line.tsx

import { css } from '@rocket.chat/css-in-js';
import { Box } from '@rocket.chat/fuselage';
import type { ReactElement } from 'react';
import React from 'react';

const Line = ({ animated, moved }: { animated: boolean; moved?: boolean }): ReactElement => {
	const animatedStyle = animated
		? css`
				will-change: transform;
				transition: transform 0.2s ease-out;
		  `
		: '';

	const movedStyle = moved
		? css`
				&:nth-child(1),
				&:nth-child(3) {
					transform-origin: 50%, 50%, 0;
				}

				&:nth-child(1) {
					transform: translate(-25%, 3px) rotate(-45deg) scale(0.5, 1);
				}

				[dir='rtl'] &:nth-child(1) {
					transform: translate(25%, 3px) rotate(45deg) scale(0.5, 1);
				}

				&:nth-child(3) {
					transform: translate(-25%, -3px) rotate(45deg) scale(0.5, 1);
				}

				[dir='rtl'] &:nth-child(3) {
					transform: translate(25%, -3px) rotate(-45deg) scale(0.5, 1);
				}
		  `
		: '';

	return (
		<Box is='span' width='x20' height='x2' backgroundColor='currentColor' className={[animatedStyle, movedStyle]} aria-hidden='true' />
	);
};

export default Line;