From 496f97a1baec1278b1201e90d82fcd4799d7673f Mon Sep 17 00:00:00 2001
From: Anton Nikolaev <nikoant@fb.com>
Date: Mon, 22 Jun 2020 05:36:11 -0700
Subject: [PATCH] Disable source maps for Flipper release builds

Summary:
Disabled source maps for Flipper release builds.
1) I found that source maps was not only written to the "bundle.map" file, but also inlined into "bundle.js" in base64 format which hugely affected the total bundle size.
2) In addition to the size, these inlined source maps were also one of 2 causes that Flipper package size was not deterministic and changed so significantly in every diff even when Flipper was not touched at all.

Changelog: Disabled source maps in Flipper release builds thus reducing size by ~20%.

Reviewed By: mweststrate

Differential Revision: D22158898

fbshipit-source-id: b35cfba80553d01aec256983c3ba772ed0534d8f
---
 desktop/scripts/build-utils.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/desktop/scripts/build-utils.ts b/desktop/scripts/build-utils.ts
index 499ee0e38..4546f0bdd 100644
--- a/desktop/scripts/build-utils.ts
+++ b/desktop/scripts/build-utils.ts
@@ -97,7 +97,7 @@ async function compile(
       dev,
       minify: !dev,
       resetCache: !dev,
-      sourceMap: true,
+      sourceMap: dev,
       entry,
       out: path.join(buildFolder, 'bundle.js'),
     },
@@ -174,7 +174,7 @@ export async function compileMain() {
       out,
       dev,
       minify: !dev,
-      sourceMap: true,
+      sourceMap: dev,
       resetCache: !dev,
     });
     console.log('✅  Compiled main bundle.');