diff --git a/routes/_actions/timeline.js b/routes/_actions/timeline.js
index 0104c8af..7282f4f4 100644
--- a/routes/_actions/timeline.js
+++ b/routes/_actions/timeline.js
@@ -5,7 +5,7 @@ import { toast } from '../_utils/toast'
 import { StatusStream } from '../_utils/mastodon/StatusStream'
 import { getInstanceInfo } from '../_utils/mastodon/instance'
 import { mark, stop } from '../_utils/marks'
-import { mergeStatuses } from '../_utils/timelines'
+import { mergeArrays } from '../_utils/arrays'
 
 const FETCH_LIMIT = 20
 
@@ -34,7 +34,7 @@ async function addStatuses(instanceName, timelineName, newStatuses) {
   mark('addStatuses')
   let newStatusIds = newStatuses.map(status => status.id)
   let oldStatusIds = store.getForTimeline(instanceName, timelineName, 'statusIds') || []
-  let merged = mergeStatuses(oldStatusIds, newStatusIds)
+  let merged = mergeArrays(oldStatusIds, newStatusIds)
   store.setForTimeline(instanceName, timelineName, { statusIds: merged })
   stop('addStatuses')
 }
diff --git a/routes/_components/status/Status.html b/routes/_components/status/Status.html
index f08891b1..54687ddf 100644
--- a/routes/_components/status/Status.html
+++ b/routes/_components/status/Status.html
@@ -296,7 +296,7 @@
   import Toolbar from './Toolbar.html'
   import { mark, stop } from '../../_utils/marks'
   import IntlRelativeFormat from 'intl-relativeformat'
-  import { replaceAll } from '../../_utils/replaceAll'
+  import { replaceAll } from '../../_utils/strings'
   import { store } from '../../_store/store'
 
   const relativeFormat = new IntlRelativeFormat('en-US');
diff --git a/routes/_utils/arrays.js b/routes/_utils/arrays.js
new file mode 100644
index 00000000..f29a0df7
--- /dev/null
+++ b/routes/_utils/arrays.js
@@ -0,0 +1,32 @@
+// Merge two arrays, assuming both input arrays have the same order
+// and items are comparable
+export function mergeArrays(leftArray, rightArray) {
+  let leftIndex = 0
+  let rightIndex = 0
+  let merged = []
+  while (leftIndex < leftArray.length || rightIndex < rightArray.length) {
+    if (leftIndex === leftArray.length) {
+      merged.push(rightArray[rightIndex])
+      rightIndex++
+      continue
+    }
+    if (rightIndex === rightArray.length) {
+      merged.push(leftArray[leftIndex])
+      leftIndex++
+      continue
+    }
+    let left = leftArray[leftIndex]
+    let right = rightArray[rightIndex]
+    if (right === left) {
+      rightIndex++
+      leftIndex++
+    } else if (parseInt(right, 10) > parseInt(left, 10)) {
+      merged.push(right)
+      rightIndex++
+    } else {
+      merged.push(left)
+      leftIndex++
+    }
+  }
+  return merged
+}
\ No newline at end of file
diff --git a/routes/_utils/replaceAll.js b/routes/_utils/strings.js
similarity index 100%
rename from routes/_utils/replaceAll.js
rename to routes/_utils/strings.js
diff --git a/routes/_utils/timelines.js b/routes/_utils/timelines.js
deleted file mode 100644
index 05868471..00000000
--- a/routes/_utils/timelines.js
+++ /dev/null
@@ -1,32 +0,0 @@
-// Merge two lists of statuses for the same timeline, e.g. one from IDB
-// and another from the network. In case of duplicates, prefer the fresh.
-export function mergeStatuses(leftStatusIds, rightStatusIds) {
-  let leftIndex = 0
-  let rightIndex = 0
-  let merged = []
-  while (leftIndex < leftStatusIds.length || rightIndex < rightStatusIds.length) {
-    if (leftIndex === leftStatusIds.length) {
-      merged.push(rightStatusIds[rightIndex])
-      rightIndex++
-      continue
-    }
-    if (rightIndex === rightStatusIds.length) {
-      merged.push(leftStatusIds[leftIndex])
-      leftIndex++
-      continue
-    }
-    let left = leftStatusIds[leftIndex]
-    let right = rightStatusIds[rightIndex]
-    if (right === left) {
-      rightIndex++
-      leftIndex++
-    } else if (parseInt(right, 10) > parseInt(left, 10)) {
-      merged.push(right)
-      rightIndex++
-    } else {
-      merged.push(left)
-      leftIndex++
-    }
-  }
-  return merged
-}
\ No newline at end of file