Use Headless Chrome (Puppeteer) instead of PhantomJS in Karma runner (#141)

* chore(karma): Use Chrome Puppeteer instead of PhantomJS

* chore(ci): Bump node version to 8 for Puppeteer

Author: anishkny

circle.yml

@@ -1,6 +1,6 @@
 machine:
   node:
-    version: 5
+    version: 8
 
 test:
   override:

karma.conf.js

@@ -1,9 +1,10 @@
 var path = require('path')
+process.env.CHROME_BIN = require('puppeteer').executablePath()
 
 module.exports = function (config) {
   config.set({
     frameworks: ['mocha', 'sinon-chai'],
-    browsers: ['PhantomJS'],
+    browsers: ['ChromeHeadless'],
     reporters: ['spec', 'coverage'],
     files: [
       'tests/vuefire.spec.js'

package.json

@@ -47,16 +47,16 @@
     "firebase": "^4.0.0",
     "istanbul-instrumenter-loader": "^1.2.0",
     "karma": "^1.4.0",
+    "karma-chrome-launcher": "^2.2.0",
     "karma-coverage": "^1.1.1",
     "karma-mocha": "^1.3.0",
-    "karma-phantomjs-launcher": "^1.0.2",
     "karma-sinon-chai": "^1.2.4",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-spec-reporter": "0.0.26",
     "karma-webpack": "^2.0.2",
     "lolex": "^1.5.2",
     "mocha": "^3.2.0",
-    "phantomjs-prebuilt": "^2.1.14",
+    "puppeteer": "^0.13.0",
     "sinon": "^1.17.7",
     "sinon-chai": "^2.8.0",
     "vue": "^1.0.28",