From e17a331b98235e85ba91933c94a879be616199d2 Mon Sep 17 00:00:00 2001
From: Tommy Nguyen <4123478+tido64@users.noreply.github.com>
Date: Tue, 22 Jun 2021 17:31:19 +0200
Subject: [PATCH] disable JSON wrapping

---
 packages/metro-transform-worker/src/index.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/metro-transform-worker/src/index.js b/packages/metro-transform-worker/src/index.js
index 246d5f1d0..5b0b1338d 100644
--- a/packages/metro-transform-worker/src/index.js
+++ b/packages/metro-transform-worker/src/index.js
@@ -546,7 +546,10 @@ async function transformJSON(
   file: JSONFile,
   {options, config, projectRoot}: TransformationContext,
 ): Promise<TransformResponse> {
-  let code = JsFileWrapping.wrapJson(file.code, config.globalPrefix);
+  let code =
+    options.unstable_disableModuleWrapping === true
+      ? JsFileWrapping.jsonToCommonJS(file.code)
+      : JsFileWrapping.wrapJson(file.code, config.globalPrefix);
   let map = [];
 
   // TODO: When we can reuse transformJS for JSON, we should not derive `minify` separately.