title: Using Gulp-babel and getting "Argument name clash in strict mode"
body: <p><a href="https://i.stack.imgur.com/ZOspx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZOspx.png" alt="enter image description here"></a></p>
  
  <p>I'm trying to use <strong><a href="https://www.npmjs.com/package/gulp-babel" rel="nofollow noreferrer">gulp-babel</a></strong> so I can start writing some ES6 / ES2015 code inside of my ES5 app.</p>
  
  <pre><code>var gulp          = require('gulp'),
      gutil         = require('gulp-util'),
      gulpif        = require('gulp-if'),
      uglify        = require('gulp-uglify'),
      concat        = require('gulp-concat'),
      sass          = require('gulp-ruby-sass'),
      streamqueue   = require('streamqueue'),
      sourcemaps    = require('gulp-sourcemaps'),
      templateCache = require('gulp-angular-templatecache'),
      htmlReplace   = require('gulp-html-replace'),
      runSequence   = require('run-sequence'),
      stripDebug    = require('gulp-strip-debug'),
      del           = require('del'),
      es            = require('event-stream'),
      webpack       = require('webpack-stream'),
      babel         = require('gulp-babel'),
      browserSync   = require('browser-sync').create();
  </code></pre>
  
  <p>And lower down in my code, here is where the problem lies:</p>
  
  <pre><code>gulp.task('build-min-bundle', function() {
      gutil.log(gutil.colors.blue.bold(' Compiled bundle file contains these modules:'));
      for (var i=0; i&lt;paths.scripts.length; i++) {
          gutil.log(gutil.colors.yellow.bold('  '+paths.scripts[i]));
      }
      return gulp.src(paths.bundle)
      .pipe(stripDebug())
      .pipe(concat(dist))
      .pipe(babel()) // &lt;--
      .pipe(uglify())
      .on('error', errorlog)
      .pipe(gulp.dest('app/assets/js'));
  });
  </code></pre>
  
  <p>I originally tried this first:</p>
  
  <pre><code>.pipe(babel({
      presets: ['es2015']
  }))
  </code></pre>
  
  <blockquote>
    <p>Argument name clash in strict mode (2774:5)</p>
  </blockquote>