From 95bfe3d5e20c962d64be07a66586f3e94c33452c Mon Sep 17 00:00:00 2001
From: Andy Hanson <anhans@microsoft.com>
Date: Thu, 15 Mar 2018 10:01:50 -0700
Subject: [PATCH] Disable assertion for deferredUnusedIdentifierNodes

---
 src/compiler/checker.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 9fa5ab5cb6d9d..4044e6ae1252f 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -21573,7 +21573,8 @@ namespace ts {
 
         function registerForUnusedIdentifiersCheck(node: Node) {
             if (deferredUnusedIdentifierNodes) {
-                Debug.assert(addToSeen(seenDeferredUnusedIdentifiers, getNodeId(node)), "Deferring unused identifier check twice");
+                // TODO: GH#22580
+                // Debug.assert(addToSeen(seenDeferredUnusedIdentifiers, getNodeId(node)), "Deferring unused identifier check twice");
                 deferredUnusedIdentifierNodes.push(node);
             }
         }