From a05e5d1e86d6f0e7a307883bb20979500696d056 Mon Sep 17 00:00:00 2001
From: "J. Ryan Stinnett" <jryans@gmail.com>
Date: Wed, 13 Mar 2019 12:32:46 +0000
Subject: [PATCH] Use modern Yarn version on Travis CI

Travis CI uses a quite old version of Yarn by default. This adds Yarn's
recommended incantation for using the latest stable version.
---
 .travis.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index c27ebc0c77..5149c81d81 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,6 +19,9 @@ node_js:
     - 10
 addons:
     chrome: stable
+before_install:
+    - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.13.0
+    - export PATH=$HOME/.yarn/bin:$PATH
 install:
     # clone the deps with depth 1: we know we will only ever need that one
     # commit.