src/mixins/base.js
function watchAppearForScrollables (tagName, context) {
  // when this is a scroller/list/waterfall
  if (scrollableTypes.indexOf(tagName) > -1) {
    const sd = context.scrollDirection
    if (!sd || sd !== 'horizontal') {
      appearWatched = context
      watchAppear(context, true)
    }
  }
}
function watchAppearForScrollables (tagName, context) {
  // when this is a scroller/list/waterfall
  if (scrollableTypes.indexOf(tagName) > -1) {
    const sd = context.scrollDirection
    if (!sd || sd !== 'horizontal') {
      appearWatched = context
      watchAppear(context, true)
    }
  }
}
function watchAppearForScrollables ( tagName , context ) { // when this is a scroller/list/waterfall if ( scrollableTypes . indexOf ( tagName ) > - 1 ) { const sd = context . scrollDirection if ( ! sd || sd !== 'horizontal' ) { appearWatched = context watchAppear ( context , true ) } } }
if it's a scrollable tag, then watch appear events for it.
if it s a scrollable tag then watch appear events for it .