From e556e53389ab97e4aad5f21b6b002779c418926e Mon Sep 17 00:00:00 2001
From: Denys Vuika <denys.vuika@gmail.com>
Date: Tue, 2 Oct 2018 08:53:32 +0100
Subject: [PATCH] raise onDidChange only when needed

---
 src/monaco.contribution.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/monaco.contribution.ts b/src/monaco.contribution.ts
index 9700c5a7..b58c296f 100644
--- a/src/monaco.contribution.ts
+++ b/src/monaco.contribution.ts
@@ -79,11 +79,17 @@ export class LanguageServiceDefaultsImpl implements monaco.languages.typescript.
 		return {
 			dispose: () => {
 				if (paths.length > 0) {
+					let changed = false;
+
 					paths.forEach(filePath => {
-						delete this._extraLibs[filePath];
+						if (delete this._extraLibs[filePath]) {
+							changed = true;
+						}
 					});
 
-					this._onDidChange.fire(this);
+					if (changed) {
+						this._onDidChange.fire(this);
+					}
 				}
 			}
 		}