old_contents: var gulp = require('gulp');
  
  var concat = require('gulp-concat');
  var uglify = require('gulp-uglify');
  
  var paths = {
    scripts: 'js/src/*js',
  };
  
  gulp.task('scripts', function() {
    'use strict';
    // Minify and copy all JavaScript (except vendor scripts)
    return gulp.src(paths.scripts)
      .pipe(uglify())
      .pipe(concat('all.min.js'))
      .pipe(gulp.dest('js/build'));
  });
  
  // Rerun the task when a file changes
  gulp.task('watch', function() {
    'use strict';
    gulp.watch(paths.scripts, ['scripts']);
  });
  
  // The default task (called when you run `gulp` from cli)
  gulp.task('default', ['scripts']);
  
new_contents: var gulp = require('gulp');
  
  var concat = require('gulp-concat');
  var uglify = require('gulp-uglify');
  
  var paths = {
    scripts: 'public/js/src/*js',
  };
  
  gulp.task('scripts', function() {
    'use strict';
    // Minify and copy all JavaScript (except vendor scripts)
    return gulp.src(paths.scripts)
      .pipe(uglify())
      .pipe(concat('all.min.js'))
      .pipe(gulp.dest('public/js/build'));
  });
  
  // Rerun the task when a file changes
  gulp.task('watch', function() {
    'use strict';
    gulp.watch(paths.scripts, ['scripts']);
  });
  
  // The default task (called when you run `gulp` from cli)
  gulp.task('default', ['scripts']);
  
subject: Fix gulpfile build locations.