From 1a36b720f1c620ab73afcb1dec16f24868c5269e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ey=C3=BE=C3=B3r=20Magn=C3=BAsson?= <eysi09@gmail.com>
Date: Wed, 31 Oct 2018 18:31:37 +0100
Subject: [PATCH] fix(ext-tools): handle end of stream event

When validating the hash of a downloaded binary, hash.read() returns
null at the end of stream event. This wasn't handled properly before.
---
 garden-service/src/util/ext-tools.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/garden-service/src/util/ext-tools.ts b/garden-service/src/util/ext-tools.ts
index 3505be4f7a..1927dd7afc 100644
--- a/garden-service/src/util/ext-tools.ts
+++ b/garden-service/src/util/ext-tools.ts
@@ -171,6 +171,11 @@ export class BinaryCmd extends Cmd {
         // validate sha256 if provided
         const sha256 = hash.read()
 
+        // end of stream event
+        if (sha256 === null) {
+          return
+        }
+
         if (this.spec.sha256 && sha256 !== this.spec.sha256) {
           reject(new DownloadError(
             `Invalid checksum from ${this.spec.url} (got ${sha256})`,