:fire: bring back computed checks

vue-theme/src/pages/list.vue

 import card from '@/components/card'
 import sidebar from '@/components/sidebars/sidebar'
 import { postTypeGetters, scrollTop, heroUtils } from './mixin-post-types'
-
 import { postTypes, sortTypes, convertTitleCase } from '@/utils/helpers'
 
 const TIMEOUT = 1
 const INTERSECT_SELECTOR = '.page--list > article footer'
 
-const wideTypes = ['event', 'exhibition']
-const gridTypes = ['episode', 'artist']
-const sansSidebarTypes = ['episode']
-
 export default {
     components: { sidebar, featuredImage, card },
     mixins: [postTypeGetters, scrollTop, heroUtils],
         }
     },
     computed: {
-        grid: () => gridTypes.includes(this.type),
-        isWide: () => wideTypes.includes(this.type),
-        sidebar: () => !sansSidebarTypes.includes(this.type),
+        grid: () => ['episode', 'artist'].includes(this.type),
+        isWide: () => ['event', 'exhibition'].includes(this.type),
+        sidebar: () => !['episode'].includes(this.type),
         type: () => this.$route.params.type,
         sortBy: () => this.$route.params.sortBy,
-        pType: () => `${convertTitleCase(this.type)}s`,
-        loaded: () => this[`all${this.pType}Loaded`],
-        posts: () => this[`all${this.pType}`],
-        shouldLoadAllAtOnce: () => this.type == 'episode' || this.type == 'artist' && this.sortBy == sortTypes.material
+        shouldLoadAllAtOnce: () => this.type == 'episode' || this.type == 'artist' && this.sortBy == sortTypes.material,
+        pType: () => {
+            if(!this.type) return
+            return `${convertTitleCase(this.type)}s`
+        },
+        loaded: () => {
+            if (!this.pType) return
+            return this[`all${this.pType}Loaded`]
+        },
+        posts: () => {
+            if (!this.pType) return
+            return this[`all${this.pType}`]
+        }
     },
     methods: {
         async loadMorePosts(shouldClear) {