diff --git a/src/vs/base/browser/ui/splitview/splitview.ts b/src/vs/base/browser/ui/splitview/splitview.ts
index 2022b7df424336d620e2bba93eb29788c338b1a4..17501bcfafbf8a1d1a37ec21e2d9c317df32f716 100644
--- a/src/vs/base/browser/ui/splitview/splitview.ts
+++ b/src/vs/base/browser/ui/splitview/splitview.ts
@@ -11,7 +11,7 @@ import { Event, mapEvent, Emitter } from 'vs/base/common/event';
 import * as types from 'vs/base/common/types';
 import * as dom from 'vs/base/browser/dom';
 import { clamp } from 'vs/base/common/numbers';
-import { range, firstIndex } from 'vs/base/common/arrays';
+import { range, firstIndex, pushToStart, pushToEnd } from 'vs/base/common/arrays';
 import { Sash, Orientation, ISashEvent as IBaseSashEvent, SashState } from 'vs/base/browser/ui/sash/sash';
 import { Color } from 'vs/base/common/color';
 import { domEvent } from 'vs/base/browser/event';
@@ -77,44 +77,6 @@ enum State {
 	Busy
 }
 
-function pushToStart<T>(arr: T[], value: T): T[] {
-	let didFindValue = false;
-
-	const result = arr.filter(v => {
-		if (v === value) {
-			didFindValue = true;
-			return false;
-		}
-
-		return true;
-	});
-
-	if (didFindValue) {
-		result.unshift(value);
-	}
-
-	return result;
-}
-
-function pushToEnd<T>(arr: T[], value: T): T[] {
-	let didFindValue = false;
-
-	const result = arr.filter(v => {
-		if (v === value) {
-			didFindValue = true;
-			return false;
-		}
-
-		return true;
-	});
-
-	if (didFindValue) {
-		result.push(value);
-	}
-
-	return result;
-}
-
 export type DistributeSizing = { type: 'distribute' };
 export type SplitSizing = { type: 'split', index: number };
 export type Sizing = DistributeSizing | SplitSizing;
diff --git a/src/vs/base/common/arrays.ts b/src/vs/base/common/arrays.ts
index f9ddfdc71aaec6754df0216dce7066d4cb7e41f8..2de4ad21a44d7db2b930b37fe82885a35a32bd86 100644
--- a/src/vs/base/common/arrays.ts
+++ b/src/vs/base/common/arrays.ts
@@ -463,3 +463,47 @@ export function shuffle<T>(array: T[]): void {
 		array[j] = temp;
 	}
 }
+
+/**
+ * Pushes an element to the start of the array, if found.
+ */
+export function pushToStart<T>(arr: T[], value: T): T[] {
+	let didFindValue = false;
+
+	const result = arr.filter(v => {
+		if (v === value) {
+			didFindValue = true;
+			return false;
+		}
+
+		return true;
+	});
+
+	if (didFindValue) {
+		result.unshift(value);
+	}
+
+	return result;
+}
+
+/**
+ * Pushes an element to the end of the array, if found.
+ */
+export function pushToEnd<T>(arr: T[], value: T): T[] {
+	let didFindValue = false;
+
+	const result = arr.filter(v => {
+		if (v === value) {
+			didFindValue = true;
+			return false;
+		}
+
+		return true;
+	});
+
+	if (didFindValue) {
+		result.push(value);
+	}
+
+	return result;
+}
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