Before vue@2.5.3, the following code:
<template slot="..."></template>...results in clearing the slot content. But in later versions this will reveal the fallback content instead.
To clear the fallback content of a predefined slot, the quickest way seem to be using a zero-width space (​) in the template. But it does look hacky. Let's hide the hack under the hood and use a more semantic approach, which doesn't even need an extra character here.
This component renders absolutely nothing except a comment node (which won't appear in DOM tree so that CSS selectors like :first-child will not be affected) so you can now clear a slot like this:
<template slot="..."><v-void/></template>It'll be more ideal if Vue can support this with a native custom component like <transition>/<keep-alive>:
<template slot="..."><void/></template>