// Utilities
import { camelize } from 'vue';
export default function (expandedParentClass = '', x = false) {
  const sizeProperty = x ? 'width' : 'height';
  const offsetProperty = camelize("offset-".concat(sizeProperty));
  return {
    onBeforeEnter(el) {
      el._parent = el.parentNode;
      el._initialStyle = {
        transition: el.style.transition,
        overflow: el.style.overflow,
        [sizeProperty]: el.style[sizeProperty]
      };
    },

    onEnter(el) {
      const initialStyle = el._initialStyle;
      el.style.setProperty('transition', 'none', 'important'); // Hide overflow to account for collapsed margins in the calculated height

      el.style.overflow = 'hidden';
      const offset = "".concat(el[offsetProperty], "px");
      el.style[sizeProperty] = '0';
      void el.offsetHeight; // force reflow

      el.style.transition = initialStyle.transition;

      if (expandedParentClass && el._parent) {
        el._parent.classList.add(expandedParentClass);
      }

      requestAnimationFrame(() => {
        el.style[sizeProperty] = offset;
      });
    },

    onAfterEnter: resetStyles,
    onEnterCancelled: resetStyles,

    onLeave(el) {
      el._initialStyle = {
        transition: '',
        overflow: el.style.overflow,
        [sizeProperty]: el.style[sizeProperty]
      };
      el.style.overflow = 'hidden';
      el.style[sizeProperty] = "".concat(el[offsetProperty], "px");
      void el.offsetHeight; // force reflow

      requestAnimationFrame(() => el.style[sizeProperty] = '0');
    },

    onAfterLeave,
    onLeaveCancelled: onAfterLeave
  };

  function onAfterLeave(el) {
    if (expandedParentClass && el._parent) {
      el._parent.classList.remove(expandedParentClass);
    }

    resetStyles(el);
  }

  function resetStyles(el) {
    const size = el._initialStyle[sizeProperty];
    el.style.overflow = el._initialStyle.overflow;
    if (size != null) el.style[sizeProperty] = size;
    delete el._initialStyle;
  }
}
//# sourceMappingURL=expand-transition.mjs.map