From 6d4f4e8adaf1b523d3d1cc9165b0f2da8a80f2c1 Mon Sep 17 00:00:00 2001
From: Fathy Boundjadj <fathy.boundjadj@gmail.com>
Date: Tue, 24 Jul 2018 01:05:53 +0200
Subject: [PATCH] Use esnext target with TypeScript and scope hoist (#1781)

Should bring a noticeable size improvement on big TypeScript apps
---
 packages/core/parcel/src/assets/TypeScriptAsset.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/core/parcel/src/assets/TypeScriptAsset.js b/packages/core/parcel/src/assets/TypeScriptAsset.js
index e12325a438c..715a8ea94c2 100644
--- a/packages/core/parcel/src/assets/TypeScriptAsset.js
+++ b/packages/core/parcel/src/assets/TypeScriptAsset.js
@@ -12,7 +12,9 @@ class TypeScriptAsset extends Asset {
     let typescript = await localRequire('typescript', this.name);
     let transpilerOptions = {
       compilerOptions: {
-        module: typescript.ModuleKind.CommonJS,
+        module: this.options.scopeHoist
+          ? typescript.ModuleKind.ESNext
+          : typescript.ModuleKind.CommonJS,
         jsx: typescript.JsxEmit.Preserve,
 
         // it brings the generated output from TypeScript closer to that generated by Babel