From 8928aa5219b09090c623dcf0801d761b3a1b7260 Mon Sep 17 00:00:00 2001
From: Ro Savage <rowan.savage@gmail.com>
Date: Mon, 29 May 2017 14:06:17 +1200
Subject: [PATCH] Install latest yarn on AppVeyor to avoid windows crashing bug
 in yarn

---
 tasks/e2e-installs.sh    | 5 ++++-
 tasks/e2e-kitchensink.sh | 5 ++++-
 tasks/e2e-simple.sh      | 5 ++++-
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/tasks/e2e-installs.sh b/tasks/e2e-installs.sh
index 064a4e30f0a..0bdbbad6b56 100755
--- a/tasks/e2e-installs.sh
+++ b/tasks/e2e-installs.sh
@@ -86,7 +86,10 @@ root_path=$PWD
 # Clear cache to avoid issues with incorrect packages being used
 if hash yarnpkg 2>/dev/null
 then
-  yarn cache clean
+  # AppVeyor uses old version on yarn.
+  # Once updated to 0.24.3 or above install can be removed.
+  npm install -g yarn@latest
+  yarnpkg cache clean
 fi
 
 if hash npm 2>/dev/null
diff --git a/tasks/e2e-kitchensink.sh b/tasks/e2e-kitchensink.sh
index 157064a50fb..96b249c45c0 100755
--- a/tasks/e2e-kitchensink.sh
+++ b/tasks/e2e-kitchensink.sh
@@ -69,7 +69,10 @@ root_path=$PWD
 # Clear cache to avoid issues with incorrect packages being used
 if hash yarnpkg 2>/dev/null
 then
-  yarn cache clean
+  # AppVeyor uses old version on yarn.
+  # Once updated to 0.24.3 or above install can be removed.
+  npm install -g yarn@latest
+  yarnpkg cache clean
 fi
 
 if hash npm 2>/dev/null
diff --git a/tasks/e2e-simple.sh b/tasks/e2e-simple.sh
index 08e359517ed..abe3ce55878 100755
--- a/tasks/e2e-simple.sh
+++ b/tasks/e2e-simple.sh
@@ -68,7 +68,10 @@ root_path=$PWD
 # Clear cache to avoid issues with incorrect packages being used
 if hash yarnpkg 2>/dev/null
 then
-  yarn cache clean
+  # AppVeyor uses old version on yarn.
+  # Once updated to 0.24.3 or above install can be removed.
+  npm install -g yarn@latest
+  yarnpkg cache clean
 fi
 
 if hash npm 2>/dev/null