/**
 * Generate CSS properties for absolute centering
 * @example
 *  jssAbsoluteCenter('3rem');
 *  // returns
 *  {
 *      top: '50%',
 *      left: '50%',
 *      width: '3rem',
 *      height: '3rem',
 *      margin: '-1.5rem 0 0 -1.5rem'
 *  }
 *
 *  jssAbsoluteCenter('4rem', '60px');
 *  // returns
 *  {
 *      top: '50%',
 *      left: '50%',
 *      width: '4rem',
 *      height: '60px',
 *      margin: '-30px 0 0 -2rem'
 *  }
 *
 *  jssAbsoluteCenter('100px', '100px', 'topRight);
 *  // returns
 *  {
 *      top: '50%',
 *      right: '50%',
 *      width: '100px',
 *      height: '100px',
 *      margin: '-50px -50px 0 0'
 *  }
 *
 *  jssAbsoluteCenter('100px', '100px', 'bottomRight);
 *  // returns
 *  {
 *      bottom: '50%',
 *      right: '50%',
 *      width: '100px',
 *      height: '100px',
 *      margin: '0 -50px -50px 0'
 *  }
 *
 *  jssAbsoluteCenter('100px', '100px', 'bottomLeft);
 *  // returns
 *  {
 *      bottom: '50%',
 *      right: '50%',
 *      width: '100px',
 *      height: '100px',
 *      margin: '0 0 -50px -50px'
 *  }
 */
export declare function jssAbsoluteCenter(
	width: string,
	height?: string,
	corner?: 'topLeft' | 'topRight' | 'bottomRight' | 'bottomLeft'
): {
	top?: string;
	bottom?: string;
	left?: string;
	right?: string;
	width: string;
	height: string;
	margin: string;
};