Use esnext target with TypeScript and scope hoist (#1781)

Should bring a noticeable size improvement on big TypeScript apps
parcel-bundler · Jul 23, 2018 · 6d4f4e8 · 6d4f4e8
1 parent cfab887
commit 6d4f4e8
Showing 1 changed file with 3 additions and 1 deletion.
diff --git 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