diff --git a/platform/index.d.ts b/platform/index.d.ts
index eed60394f4..fd995a085e 100644
--- a/platform/index.d.ts
+++ b/platform/index.d.ts
@@ -22,9 +22,9 @@ declare interface Platform {
     toString?(): string;
 }
 
-declare module "platform" {
-	declare var platform: Platform;
+declare var platform: Platform;
 
+declare module "platform" {
     export = platform;
 }
 
diff --git a/platform/tsconfig.json b/platform/tsconfig.json
index c7a29f12be..2efb10866a 100644
--- a/platform/tsconfig.json
+++ b/platform/tsconfig.json
@@ -2,7 +2,7 @@
     "compilerOptions": {
         "module": "commonjs",
         "lib": [
-            "es6",
+            "es2017",
             "dom"
         ],
         "noImplicitAny": true,