Remove ES6 accidental.

Gulpfile.js

@@ -8,6 +8,7 @@ var source = require('vinyl-source-stream');
 var cssConcat = require('gulp-concat-css');
 var cssMin = require('gulp-minify-css');
 var gulp = require('gulp');
+var gulpUtil = require('gulp-util')
 var rename = require('gulp-rename');
 var uglify = require('gulp-uglify');
 
@@ -77,7 +78,7 @@ gulp.task('cssify', ['browserify'], function() {
 
 gulp.task('minify-js', ['browserify', 'cssify'], function() {
     var stream =  gulp.src('./lacuna/load.js')
-        .pipe(uglify())
+        .pipe(uglify().on('error', gulpUtil.log))
         .pipe(rename({
             extname: '.min.js'
         }))

app/js/components/window/sitters.jsx

@@ -28,15 +28,15 @@ var AuthorizeEmpires = React.createClass({
     },
 
     authorizeAlliance: function() {
-        let value = this.refs.alliance.getDOMNode().value;
+        var value = this.refs.alliance.getDOMNode().value;
 
         if (confirm('Are you sure you want to authorize all members of ' + value + '?')) {
             SittersActions.authorizeAlliance(value);
         }
     },
 
     authorizeEmpire: function() {
-        let value = this.refs.empire.getDOMNode().value;
+        var value = this.refs.empire.getDOMNode().value;
 
         if (confirm('Are you sure you want to authorize ' + value + '?')) {
             SittersActions.authorizeEmpire(value);

package.json

@@ -42,6 +42,7 @@
   },
   "devDependencies": {
     "bower": "^1.6.5",
-    "debowerify": "^1.3.1"
+    "debowerify": "^1.3.1",
+    "gulp-util": "3.0.7"
   }
 }