Function saveOldStyle

src/animation/basicTransition.ts:332–334

(el: Displayable)

 * We don't need to save this because universalTransition can get old style from the old element
 */
export function saveOldStyle(el: Displayable) {
    transitionStore(el).oldStyle = el.style;
}

export function getOldStyle(el: Displayable) {
    return transitionStore(el).oldStyle;