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.
2019-03-13 12:32:46 +00:00 · 2019-03-13 12:32:46 +00:00 · a05e5d1e86
parent fcaf0a5503
commit a05e5d1e86
1 changed files with 3 additions and 0 deletions
--- 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.