Change emptlyTl to take userId

src/modules/statuses.js

@@ -2,7 +2,7 @@ import { includes, remove, slice, sortBy, toInteger, each, find, flatten, maxBy,
 import apiService from '../services/api/api.service.js'
 // import parse from '../services/status_parser/status_parser.js'
 
-const emptyTl = () => ({
+const emptyTl = (userId = 0) => ({
   statuses: [],
   statusesObject: {},
   faves: [],
@@ -14,8 +14,8 @@ const emptyTl = () => ({
   loading: false,
   followers: [],
   friends: [],
-  userId: 0,
-  flushMarker: 0
+  flushMarker: 0,
+  userId
 })
 
 export const defaultState = {
@@ -346,9 +346,7 @@ export const mutations = {
     each(oldTimeline.visibleStatuses, (status) => { oldTimeline.visibleStatusesObject[status.id] = status })
   },
   clearTimeline (state, { timeline }) {
-    const userId = state.timelines[timeline].userId
-    state.timelines[timeline] = emptyTl()
-    state.timelines[timeline].userId = userId
+    state.timelines[timeline] = emptyTl(state.timelines[timeline].userId)
   },
   setFavorited (state, { status, value }) {
     const newStatus = state.allStatusesObject[status.id]