From c348e318ce6e9a1d67febe40003aeb6badedea8f Mon Sep 17 00:00:00 2001
From: Elliott Kember <elliott.kember@gmail.com>
Date: Tue, 16 Feb 2021 09:55:18 -0800
Subject: [PATCH] Add "open" guard for AsarUtil to fix concurrent builds
 (#5567)

* Add "open" guard for AsarUtil to fix concurrent builds (#5567)
* Remove file-streaming optimization for M1
* Restore original code, with open event handler guard
---
 packages/app-builder-lib/src/asar/asarUtil.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/app-builder-lib/src/asar/asarUtil.ts b/packages/app-builder-lib/src/asar/asarUtil.ts
index 844d6c0af9f..04fb6af6ecc 100644
--- a/packages/app-builder-lib/src/asar/asarUtil.ts
+++ b/packages/app-builder-lib/src/asar/asarUtil.ts
@@ -209,8 +209,10 @@ export class AsarPackager {
           const readStream = createReadStream(file)
           readStream.on("error", reject)
           readStream.once("end", () => w(index + 1))
-          readStream.pipe(writeStream, {
-            end: false
+          readStream.on("open", () => {
+            readStream.pipe(writeStream, {
+              end: false
+            })
           })
         }
       }