fix(build): pin npm version in appveyor to v3, compat with node 4 (#2983)

johnjbarton · web-flow · commit bc1453e3198f · 2018-04-30T08:34:56.000-07:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -13,8 +13,8 @@ install:
   # Install Node.js
   - ps: Install-Product node $env:nodejs_version
 
-  # Upgrade npm
-  - npm install -g npm
+  # Install npm compat with node 4
+  - npm install -g npm@3
 
   # Output our current versions for debugging
   - node --version
