diff --git a/src/vs/base/common/uint.ts b/src/vs/base/common/uint.ts
index d01cd6bb382d62947e775f89f7cd3582c1d17015..439837d0d425caa436883d895c6c3dca7cb67ffc 100644
--- a/src/vs/base/common/uint.ts
+++ b/src/vs/base/common/uint.ts
@@ -5,6 +5,10 @@
 
 export function toUint8ArrayBuffer(str: string): ArrayBuffer {
 
+	if (typeof TextEncoder !== undefined) {
+		return new TextEncoder().encode(str).buffer;
+	}
+
 	let i: number, len: number, length = 0, charCode = 0, trailCharCode = 0, codepoint = 0;
 
 	// First pass, for the size