Removed remaining use of Grunt

scripts/runSpecsInNode.js

@@ -0,0 +1,28 @@
+verifyNoGlobals(() => require('../lib/jasmine-core.js').noGlobals());
+
+const Jasmine = require('jasmine');
+const jasmineCore = require('../lib/jasmine-core.js');
+const runner = new Jasmine({jasmineCore: jasmineCore});
+
+runner.loadConfigFile('./spec/support/jasmine.json');
+runner.exitOnCompletion = false;
+runner.execute()
+  .then(
+    result => result.overallStatus === 'passed',
+    err => {
+      console.error(err);
+      return false;
+    }
+  )
+  .then(ok => process.exit(ok ? 0 : 1));
+
+function verifyNoGlobals(fn) {
+  const initialGlobals = Object.keys(global);
+  fn();
+
+  const extras = Object.keys(global).filter(k => !initialGlobals.includes(k));
+
+  if (extras.length !== 0) {
+    throw new Error('Globals were unexpectedly created: ' + extras.join(', '));
+  }
+}