From eec82408d59601d3f4ce4cd8c8aa9098c80065d8 Mon Sep 17 00:00:00 2001
From: Andy Hanson <anhans@microsoft.com>
Date: Fri, 19 May 2017 07:43:09 -0700
Subject: [PATCH] Debug.assert(false) -> Debug.fail()

---
 src/services/findAllReferences.ts | 2 +-
 src/services/importTracker.ts     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/services/findAllReferences.ts b/src/services/findAllReferences.ts
index 92ca47cbed6..5687bbfc02b 100644
--- a/src/services/findAllReferences.ts
+++ b/src/services/findAllReferences.ts
@@ -334,7 +334,7 @@ namespace ts.FindAllReferences.Core {
                     references.push({ type: "node", node: (decl as ts.ModuleDeclaration).name });
                     break;
                 default:
-                    Debug.assert(false);
+                    Debug.fail("Expected a module symbol to be declared by a SourceFile or ModuleDeclaration.");
             }
         }
 
diff --git a/src/services/importTracker.ts b/src/services/importTracker.ts
index e8528b366b9..2866ade873b 100644
--- a/src/services/importTracker.ts
+++ b/src/services/importTracker.ts
@@ -405,7 +405,7 @@ namespace ts.FindAllReferences {
             case SyntaxKind.ExternalModuleReference:
                 return (decl as ExternalModuleReference).parent;
             default:
-                Debug.assert(false);
+                Debug.fail(`Unexpected module specifier parent: ${decl.kind}`);
         }
     }