function _interopDefaultLegacy(e) {
      return e && typeof e === "object" && "default" in e ? e : { "default": e };
    }
Collection of utilities useful when writing custom modifiers.
Starting from version 1.7, this method is available only if you
include `popper-utils.js` before `popper.js`.

**DEPRECATION**: This way to access PopperUtils is deprecated
and will be removed in v2! Use the PopperUtils module directly instead.
Due to the high instability of the methods contained in Utils, we can't
guarantee them to follow semver. Use them at your own risk!
@static
@private
@type {Object}
@deprecated since version 1.8
@member Utils
@memberof Popper