Swiper Vue returns incorrect object for @swiper and @init events

[rtcpw]

Based on the TypeScript definition, the Swiper Vue's @swiper and @init events should return an object with slideNext and slidePrev methods defined on it. However, attempting to call these methods results in an error. Apparently, the slideNext and slidePrev resolve into undefined when accessed.

It seems like this has worked previously:
#4226

But when attempting to do this in the latest 12.0.3 version, it gives me the undefined error above.