Next attempt: Fix NPM tests on Travis.

Author: Felix Arntz

.travis.yml

@@ -35,7 +35,7 @@ matrix:
     - php: 5.6
       env: WP_VERSION=4.5 WP_MULTISITE=1
     - php: 7.0
-      env: NPM_TESTS=1
+      env: WP_VERSION=4.9 NPM_TESTS=1
   allow_failures:
     - php: 5.2
 
@@ -47,6 +47,16 @@ before_script:
         phpenv config-rm xdebug.ini
       fi
     fi
+  - |
+    if [[ "$NPM_TESTS" == "1" ]]; then
+      rm -rf ~/.nvm
+      git clone https://github.com/creationix/nvm.git ~/.nvm
+      cd ~/.nvm && git checkout `git describe --abbrev=0 --tags`
+      source ~/.nvm/nvm.sh
+      nvm install 8
+      npm install
+      export PATH="$HOME/.composer/vendor/bin:$PATH"
+    fi
   - |
     case "$TRAVIS_PHP_VERSION" in
       5.6|5.5|5.4|5.3)
@@ -71,15 +81,6 @@ before_script:
       composer install
       cd ..
     fi
-  - |
-    if [[ "$NPM_TESTS" == "1" ]]; then
-      rm -rf ~/.nvm
-      git clone https://github.com/creationix/nvm.git ~/.nvm
-      cd ~/.nvm && git checkout `git describe --abbrev=0 --tags`
-      source ~/.nvm/nvm.sh
-      nvm install 8
-      npm install
-    fi
   - PLUGIN_SLUG=$(basename $(pwd))
   - export WP_DEVELOP_DIR=/tmp/wordpress/
   - git clone --depth=50 --branch="$WP_VERSION" git://develop.git.wordpress.org/ /tmp/wordpress