:bug: calling oberserve on setup

vue-theme/src/pages/list.vue

@@ -149,9 +149,9 @@ export default {
             // console.warn('attach to: ',footerEl)
             if(!footerEl) return
             const onIntersect = entries => {
-                if(this.isFetching) return
+                // if(this.isFetching) return
 
-                this.isFetching = true
+                // this.isFetching = true
                 entries.forEach(({ target, isIntersecting }) => {
                     if (!isIntersecting) return
                     this.observer.unobserve(target)
@@ -160,7 +160,7 @@ export default {
                         console.log("intersected:", target)
                     }, 1000)
                 })
-                this.isFetching = false
+                // this.isFetching = false
                 // this.loadMorePosts()
                 // console.log('loaded...', this.loadMorePosts)
                 // console.log('cb this:', this)
@@ -172,6 +172,7 @@ export default {
                     threshold: 1.0,
                 }
             )
+            this.observer.observe(footerEl)
         },
         unsetIntersectionLoader(type) {
             if(!type) return console.error('cannot unset intersection handler for undefined type...')