chore(): Caching yarn on Travis (angular#1438)

jamesdaniels · myspivey · commit a65c9859ed49 · 2018-04-09T18:42:53.000-06:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,7 +6,12 @@ node_js:
 addons:
   chrome: stable
 
-cache: npm
+cache:
+  yarn: true
+  directories:
+    - node_modules
+    - "$HOME/.npm"
+    - "$HOME/.cache"
 
 branches:
   only:
