Use takeWhile() extension.

app/src/main/java/com/github/libretube/extensions/FilterUntil.kt

@@ -1,15 +0,0 @@
-package com.github.libretube.extensions
-
-/**
- * Returns a list of all items until the given condition is fulfilled
- * @param predicate The condition which needs to be searched for
- * @return a list of all items before the first true condition
- */
-fun <T> List<T>.filterUntil(predicate: (T) -> Boolean): List<T>? {
-    val items = mutableListOf<T>()
-    this.forEach {
-        if (predicate(it)) return items
-        items.add(it)
-    }
-    return null
-}

app/src/main/java/com/github/libretube/workers/NotificationWorker.kt

@@ -18,7 +18,6 @@ import com.github.libretube.constants.IntentData
 import com.github.libretube.constants.PUSH_CHANNEL_ID
 import com.github.libretube.constants.PreferenceKeys
 import com.github.libretube.extensions.TAG
-import com.github.libretube.extensions.filterUntil
 import com.github.libretube.extensions.toID
 import com.github.libretube.ui.activities.MainActivity
 import com.github.libretube.ui.views.TimePickerPreference
@@ -107,9 +106,7 @@ class NotificationWorker(appContext: Context, parameters: WorkerParameters) :
             }
 
             // filter the new videos until the last seen video in the feed
-            val newStreams = videoFeed.filterUntil {
+            val newStreams = videoFeed.takeWhile { it.url!!.toID() != lastSeenStreamId }
-                it.url!!.toID() == lastSeenStreamId
-            } ?: return@runBlocking
 
             // return if the previous video didn't get found
             if (newStreams.isEmpty()) return@runBlocking