From a9be53093c9de71ebb857a0469a97bac59855d87 Mon Sep 17 00:00:00 2001
From: Wesley Wigham <t-weswig@microsoft.com>
Date: Mon, 23 Nov 2015 12:55:29 -0800
Subject: [PATCH] change enum emit

---
 src/compiler/emitter.ts | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
index 83d3e24351e..f31885dcd03 100644
--- a/src/compiler/emitter.ts
+++ b/src/compiler/emitter.ts
@@ -6206,9 +6206,11 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
 
                 if (!shouldHoistDeclarationInSystemJsModule(node)) {
                     // do not emit var if variable was already hoisted
-                    if (!(node.flags & NodeFlags.Export) || isES6ExportedDeclaration(node)) {
+
+                    const isES6ExportedEnum = isES6ExportedDeclaration(node);
+                    if (!(node.flags & NodeFlags.Export) || (isES6ExportedEnum && isFirstDeclarationOfKind(node, node.symbol && node.symbol.declarations, SyntaxKind.ModuleDeclaration))) {
                         emitStart(node);
-                        if (isES6ExportedDeclaration(node)) {
+                        if (isES6ExportedEnum) {
                             write("export ");
                         }
                         write("var ");
@@ -6307,6 +6309,10 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                 return languageVersion === ScriptTarget.ES6 && !!(resolver.getNodeCheckFlags(node) & NodeCheckFlags.LexicalModuleMergesWithClass);
             }
 
+            function isFirstDeclarationOfKind(node: Declaration, declarations: Declaration[], kind: SyntaxKind) {
+                return !forEach(declarations, declaration => declaration.kind === kind && declaration.pos < node.pos);
+            }
+
             function emitModuleDeclaration(node: ModuleDeclaration) {
                 // Emit only if this module is non-ambient.
                 const shouldEmit = shouldEmitModuleDeclaration(node);
@@ -6319,7 +6325,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
 
                 if (emitVarForModule) {
                     const isES6ExportedNamespace = isES6ExportedDeclaration(node);
-                    if ((!isES6ExportedNamespace) || !forEach(node.symbol && node.symbol.declarations, declaration => declaration.kind === SyntaxKind.ModuleDeclaration && declaration.pos < node.pos)) {
+                    if ((!isES6ExportedNamespace) || isFirstDeclarationOfKind(node, node.symbol && node.symbol.declarations, SyntaxKind.ModuleDeclaration)) {
                         emitStart(node);
                         if (isES6ExportedNamespace) {
                             write("export ");