From 1aad431d7d85d5cd3bbbd3ca043f0997e666e3e7 Mon Sep 17 00:00:00 2001
From: Andy <anhans@microsoft.com>
Date: Thu, 9 Mar 2017 21:25:49 -0800
Subject: [PATCH] node: Set "lib" to "es5" (#15093)

---
 node/index.d.ts    | 11 +++++++++++
 node/node-tests.ts |  4 ++--
 node/tsconfig.json |  2 +-
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/node/index.d.ts b/node/index.d.ts
index 18b12ce5d2..ca6e83a267 100644
--- a/node/index.d.ts
+++ b/node/index.d.ts
@@ -40,6 +40,17 @@ interface WeakMapConstructor { }
 interface SetConstructor { }
 interface WeakSetConstructor { }
 
+// Forward-declare needed types from lib.es2015.d.ts (in case users are using `--lib es5`)
+interface Iterable<T> {}
+interface Iterator<T> {
+    next(value?: any): IteratorResult<T>;
+}
+interface IteratorResult<T> {}
+interface SymbolConstructor {
+    readonly iterator: symbol;
+}
+declare var Symbol: SymbolConstructor;
+
 /************************************************
 *                                               *
 *                   GLOBAL                      *
diff --git a/node/node-tests.ts b/node/node-tests.ts
index 7a50504d5b..04166bc006 100644
--- a/node/node-tests.ts
+++ b/node/node-tests.ts
@@ -520,7 +520,7 @@ function stream_readable_pipe_test() {
 
     assert(typeof r.bytesRead === 'number');
     assert(typeof r.path === 'string');
-    assert(typeof rs.path === 'Buffer');
+    assert(rs.path instanceof Buffer);
 
     r.pipe(z).pipe(w);
 
@@ -2159,7 +2159,7 @@ namespace v8_tests {
 
     const heapStats = v8.getHeapStatistics();
     const heapSpaceStats = v8.getHeapSpaceStatistics();
-    
+
     const zapsGarbage: number = heapStats.does_zap_garbage;
 
     v8.setFlagsFromString('--collect_maps');
diff --git a/node/tsconfig.json b/node/tsconfig.json
index 640b4f775e..5914d22a4c 100644
--- a/node/tsconfig.json
+++ b/node/tsconfig.json
@@ -6,7 +6,7 @@
     "compilerOptions": {
         "module": "commonjs",
         "lib": [
-            "es6"
+            "es5"
         ],
         "noImplicitAny": true,
         "noImplicitThis": true,