build: support Node.js 8.x

.travis.yml

@@ -10,18 +10,14 @@ node_js:
   - "5.12"
   - "6.10"
   - "7.10"
-matrix:
-  include:
-    - node_js: "8.0"
-      env: "NVM_NODEJS_ORG_MIRROR=https://nodejs.org/download/nightly"
-  allow_failures:
-    # Allow the nightly installs to fail
-    - env: "NVM_NODEJS_ORG_MIRROR=https://nodejs.org/download/nightly"
+  - "8.1"
 sudo: false
 cache:
   directories:
     - node_modules
 before_install:
+  # Skip updating shrinkwrap / lock
+  - "npm config set shrinkwrap false"
   # Setup Node.js version-specific dependencies
   - "test $TRAVIS_NODE_VERSION != '0.8' || npm rm --save-dev istanbul"
   - "test $(echo $TRAVIS_NODE_VERSION | cut -d. -f1) -ge 4 || npm rm --save-dev $(grep -E '\"eslint\\S*\"' package.json | cut -d'\"' -f2)"

appveyor.yml

@@ -10,10 +10,12 @@ environment:
     - nodejs_version: "5.12"
     - nodejs_version: "6.10"
     - nodejs_version: "7.10"
+    - nodejs_version: "8.1"
 cache:
   - node_modules
 install:
   - ps: Install-Product node $env:nodejs_version
+  - npm config set shrinkwrap false
   - if "%nodejs_version%" equ "0.8" npm rm --save-dev istanbul
   - for /f tokens^=2^ delims^=^" %%m in ('findstr /r /c:"eslint[^ ]" package.json') do call npm rm --save-dev %%m
   - if exist node_modules npm prune