From 07aec245a31ac2fdd75138a083fd083baba53c1f Mon Sep 17 00:00:00 2001
From: Stephen Edgar <stephen@netweb.com.au>
Date: Thu, 9 Jun 2016 09:46:51 +1000
Subject: [PATCH] Add `npm prune` to Travis CI

> Via https://docs.npmjs.com/cli/prune
> > This command removes "extraneous" packages. If a package name is provided, then only packages matching one of the supplied names are removed.
> >
> > Extraneous packages are packages that are not listed on the parent package's dependencies list.

The reason for adding this is to go hand in hand with the Travis CI caching implemented a while ago, if you don't run `npm prune` periodically then older packages will not be removed from the cache and the cache will continue to grow in size.

I suspect if you compare the Travis CI cache size between master and this PR, this PR will be significantly smaller. (You could also inspect the cache with Travis CI CLI I think)

https://travis-ci.org/roots/sage/caches
---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index 37552c4bd5..d992245796 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -39,6 +39,7 @@ install:
   - node -v && npm -v
   - npm rebuild
   - travis_retry npm install
+  - npm prune
   - composer install -o --prefer-dist --no-interaction
 
 script: