Merge pull request #152 from ipfs/fix/load-more-observer

fix: remove load more observer on destroy

src/.vuepress/theme/layouts/Blog.vue

@@ -80,6 +80,7 @@ export default {
       numberOfPagesToShow: 24,
       infiniteScroll: false,
       delayValues: [0, 0.15, 0.3],
+      observer: null,
     }
   },
   computed: {
@@ -211,14 +212,14 @@ export default {
     this.$store.commit('appState/setAuthorsList', authorsArray)
   },
   mounted() {
-    const observer = new IntersectionObserver(
+    this.observer = new IntersectionObserver(
       this.handleBottomVisibilityChange,
       {
         threshold: 1.0,
       }
     )
 
-    observer.observe(document.querySelector('footer.footer ul'))
+    this.observer.observe(document.querySelector('footer.footer ul'))
 
     const { query } = this.$route
     const newQuery = pick(Object.assign({}, query), [
@@ -319,6 +320,9 @@ export default {
 
     this.$store.commit('appState/setLatestWeeklyPost', latestWeeklyPost)
   },
+  beforeDestroy() {
+    this.observer.disconnect()
+  },
   methods: {
     updateQuery() {
       const newQuery = {