Merge pull request #186 from FormidableLabs/windows-build

Fix postinstall on windows

appveyor.yml

@@ -6,6 +6,9 @@ environment:
 install:
   # Get the latest stable version of Node.js or io.js
   - ps: Install-Product node $env:nodejs_version
+  # Install and use local, modern NPM
+  - npm install npm@next
+  - set PATH=%APPDATA%\npm;%PATH%
   # install modules
   - npm install
 

package.json

@@ -18,7 +18,7 @@
     "examples": "webpack-dev-server --config examples/webpack.config.js --no-info --content-base examples/",
     "lib": "npm run babel && rimraf lib/__tests__ lib/__mocks__",
     "lint": "eslint modules",
-    "postinstall": "node -e \"require('fs').readdir('lib',function(e){e&&require('child_process').spawn('npm', ['run', 'prepublish'], {stdio: 'inherit'})})\"",
+    "postinstall": "node -e \"require('fs').stat('lib', function(e,s){process.exit(e || !s.isDirectory() ? 0 : 1)})\" && npm run prepublish || true",
     "prepublish": "npm run lib",
     "test": "jest",
     "test-coverage": "npm run babel && jest --config jest/coverage-config.json"