From 55a10f77e8e2fa5ba816366f6928131a02a6992a Mon Sep 17 00:00:00 2001
From: Matt Bierner <matb@microsoft.com>
Date: Mon, 30 Apr 2018 18:18:05 -0700
Subject: [PATCH] Don't try creating a new synced buffer if we already have one

Possibly https://github.com/Microsoft/TypeScript/issues/23502
---
 .../src/features/bufferSyncSupport.ts                        | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/extensions/typescript-language-features/src/features/bufferSyncSupport.ts b/extensions/typescript-language-features/src/features/bufferSyncSupport.ts
index 105663f14e4..bdd33e3a7c9 100644
--- a/extensions/typescript-language-features/src/features/bufferSyncSupport.ts
+++ b/extensions/typescript-language-features/src/features/bufferSyncSupport.ts
@@ -206,6 +206,11 @@ export default class BufferSyncSupport {
 		if (!filepath) {
 			return;
 		}
+
+		if (this.syncedBuffers.has(resource)) {
+			return;
+		}
+
 		const syncedBuffer = new SyncedBuffer(document, filepath, this, this.client);
 		this.syncedBuffers.set(resource, syncedBuffer);
 		syncedBuffer.open();