:recycle: fixing repack on get more alpha

vue-theme/src/store/modules/artist.js

@@ -38,9 +38,16 @@ const _arrangeByAlpha = artistsList => {
     let seen = 0
     const alphabet = [...'abcdefghijklmnopqrstuvwxyz']
     const flatPacked = []
-    artistsList.forEach(artist => {
+    artistsList.forEach((artist, i) => {
         const lastWord = artist.slug.split('-').filter(c => c).pop()
         const firstCharaOfLastWord = lastWord[0]
+        
+        // The first artist you've seen in this batch
+        if(i == 0) {
+            seen = alphabet.indexOf[firstCharaOfLastWord]
+            flatPacked.push({ slug: alphabet[seen], title: alphabet[seen] })
+        }
+
         if (alphabet.indexOf(firstCharaOfLastWord) == seen + 1) {
             seen++
             flatPacked.push({ slug: alphabet[seen], title: alphabet[seen] })
@@ -59,9 +66,6 @@ const actions = {
             if(sortType == sortTypes.material) {
                 repacked = _arrangeByMaterial(artists)
             }
-            if(sortType == sortTypes.alpha) {
-                repacked = _arrangeByAlpha(artists)
-            }
             commit('STORE_FETCHED_ARTISTS', { artists: repacked })
             commit('ARTISTS_LOADED', true)
         })
@@ -69,7 +73,11 @@ const actions = {
     },
     getMoreArtists({ commit }, { sortType, params }) {
         const storeFetch = (artists => {
-            commit('ADD_TO_FETCHED_ARTISTS', { artists })
+            let repacked = artists
+            if(sortType == sortTypes.alpha) {
+                repacked = _arrangeByAlpha(artists)
+            }
+            commit('ADD_TO_FETCHED_ARTISTS', { artists: repacked })
             commit('ARTISTS_LOADED', true)
         })
         return api.getByType({ type: 'artist', sort: sortType, params, cb: storeFetch })