diff --git a/.eslintrc.yml b/.eslintrc.yml
index 804dd60e63..3ca9a68039 100644
--- a/.eslintrc.yml
+++ b/.eslintrc.yml
@@ -5,3 +5,7 @@ env:
   node: true
   browser: true
   es6: true
+rules:
+  import/no-extraneous-dependencies:
+    - error
+    - devDependencies: true
diff --git a/README.md b/README.md
index b630ff4966..e50c34644d 100644
--- a/README.md
+++ b/README.md
@@ -119,7 +119,7 @@ How you implement the design system depends on the needs of your project and you
     </html>
     ```
 
-We offer both the CSS and the JavaScript in two versions — minified and un-minified. (In the examples above, we are using the minified files.) Use the minified files in a production environment or to reduce the file size of your downloaded assets. Use the un-minified files  if you are in a development environment or would like to debug the CSS or JavaScript assets in the browser.
+We offer both the CSS and the JavaScript in two versions — minified and un-minified. (In the examples above, we are using the minified files.) Use the minified files in a production environment or to reduce the file size of your downloaded assets. Use the un-minified files if you are in a development environment or would like to debug the CSS or JavaScript assets in the browser.
 
 And that’s it — you should now be able to copy our code samples into your `index.html` and start using the design system.
 
diff --git a/config/gulp/build.js b/config/gulp/build.js
index 05f6f14f8a..298cb57a87 100644
--- a/config/gulp/build.js
+++ b/config/gulp/build.js
@@ -1,49 +1,48 @@
-var gulp = require('gulp');
-var dutil = require('./doc-util');
-var del = require('del');
-
-gulp.task('clean-dist', function (done) {
+const gulp = require('gulp');
+const del = require('del');
+const dutil = require('./doc-util');
+const cFlags = require('./cflags');
 
+gulp.task('clean-dist', (done) => {
   if (!cFlags.cleanup) {
     dutil.logMessage(
       'clean-dist',
-      'Skipping cleaning up the distribution directories.'
+      'Skipping cleaning up the distribution directories.',
     );
     return done();
   }
-
   dutil.logMessage('clean-dist', 'Removing distribution directories.');
 
   return del('dist');
-
 });
 
-gulp.task('docs', function (done) {
 
+gulp.task('docs', (done) => {
   dutil.logMessage('docs', 'Copying documentation dist dir');
 
-  var stream = gulp.src([
+  const stream = gulp.src([
     'README.md',
     'LICENSE.md',
-    'CONTRIBUTING.md'
-    ])
+    'CONTRIBUTING.md',
+  ])
     .pipe(gulp.dest('dist'));
 
+  done();
   return stream;
-
 });
 
+
 gulp.task('build',
   gulp.series(
-    function (done) {
+    (done) => {
       dutil.logIntroduction();
       dutil.logMessage(
         'build',
-        'Creating distribution directories.'
+        'Creating distribution directories.',
       );
       done();
-      },
-    'clean-dist', 
+    },
+    'clean-dist',
     'docs',
     gulp.parallel(
       'sass',
@@ -54,5 +53,4 @@ gulp.task('build',
     // We need to copy the Sass to dist *after* the sass task, to ensure
     // that vendor libraries have been copied to the Sass directory first.
     'copy-dist-sass',
-  ),
-);
\ No newline at end of file
+  ));
diff --git a/config/gulp/cflags.js b/config/gulp/cflags.js
new file mode 100644
index 0000000000..097ea0dff7
--- /dev/null
+++ b/config/gulp/cflags.js
@@ -0,0 +1,4 @@
+module.exports = {
+  test: true,
+  cleanup: true,
+};
diff --git a/config/gulp/doc-util.js b/config/gulp/doc-util.js
index f135b3d554..47697caf70 100644
--- a/config/gulp/doc-util.js
+++ b/config/gulp/doc-util.js
@@ -1,122 +1,102 @@
-var pkg = require('../../package.json');
-var log = require('fancy-log');
-var colors = require('ansi-colors');
-var notifier = require('node-notifier');
+const log = require('fancy-log');
+const colors = require('ansi-colors');
+const notifier = require('node-notifier');
+const pkg = require('../../package.json');
 
-var shellPrefix = '$';
+const shellPrefix = '$';
 
-function drawFlag () {
-
-  // American Flag in ASCII
-  //
+function drawFlag() {
   log(
-    colors.white('')
+    colors.white(''),
   );
   log(
-    colors.white('* * * * * ========================')
+    colors.white('* * * * * ========================'),
   );
   log(
-    colors.white('* * * * * ========================')
+    colors.white('* * * * * ========================'),
   );
   log(
-    colors.white('* * * * * ========================')
+    colors.white('* * * * * ========================'),
   );
   log(
-    colors.white('* * * * * ========================')
+    colors.white('* * * * * ========================'),
   );
   log(
-    colors.white('==================================')
+    colors.white('=================================='),
   );
   log(
-    colors.white('==================================')
+    colors.white('=================================='),
   );
   log(
-    colors.white('==================================')
+    colors.white('=================================='),
   );
   log(
-    colors.white('')
+    colors.white(''),
   );
 }
 
-function notify (title, message, wait) {
+function notify(title, message, wait) {
   notifier.notify({
-    title: title,
-    message: message,
+    title,
+    message,
     icon: 'src/img/favicons/favicon-192.png',
-    wait: wait,
+    wait,
   });
 }
 
 module.exports = {
-
   pkg: {
-
     name: pkg.name,
     version: pkg.version,
-
   },
 
-  dirName: pkg.name + '-' + pkg.version,
-
-  logIntroduction: function (message) {
-
-    message = message || 'U.S. Web Design System';
+  dirName: `${pkg.name}-${pkg.version}`,
 
+  logIntroduction(message) {
+    const introMessage = message || 'USWDS';
     log(
-      colors.yellow('v' + pkg.version),
-      message
+      colors.yellow(`${introMessage} v${pkg.version}`),
     );
     drawFlag();
-
   },
 
-  logCommand: function (name, message) {
-
+  logCommand(name, message) {
     log(
       shellPrefix,
       colors.cyan(name),
-      colors.magenta(message)
+      colors.magenta(message),
     );
-
   },
 
-  logHelp: function (name, message) {
 
+  logHelp(name, message) {
     log(
       shellPrefix,
       colors.cyan(name),
-      colors.yellow(message)
+      colors.yellow(message),
     );
-
   },
 
-  logData: function (name, message) {
-
+  logData(name, message) {
     log(
       colors.cyan(name),
-      colors.yellow(message)
+      colors.yellow(message),
     );
-
   },
 
-  logError: function (name, message) {
-
+  logError(name, message) {
     log(
       colors.red(name),
-      colors.yellow(message)
+      colors.yellow(message),
     );
-    notify(this.dirName + ' gulp ' + name, message, true);
-
+    notify(`${this.dirName} gulp ${name}`, message, true);
   },
 
-  logMessage: function (name, message) {
-
+  logMessage(name, message) {
     log(
       colors.cyan(name),
-      colors.green(message)
+      colors.green(message),
     );
-    notify(this.dirName + ' gulp ' + name, message, false);
-
+    notify(`${this.dirName} gulp ${name}`, message, false);
   },
-
 };
diff --git a/config/gulp/flags.js b/config/gulp/flags.js
index 8cec38eed0..c7a4aa1842 100644
--- a/config/gulp/flags.js
+++ b/config/gulp/flags.js
@@ -1,31 +1,21 @@
-var gulp = require('gulp');
-var dutil = require('./doc-util');
-
-global.cFlags = {
-
-  test: true,
-  cleanup: true,
-
-};
-
-gulp.task('no-test', function (done) {
+const gulp = require('gulp');
+const dutil = require('./doc-util');
+const cFlags = require('./cflags');
 
+gulp.task('no-test', (done) => {
   dutil.logMessage(
     'no-test',
-    'Disabling linting and tests for all assets.'
+    'Disabling linting and tests for all assets.',
   );
   cFlags.test = false;
   done();
-
 });
 
-gulp.task('no-cleanup', function (done) {
-
+gulp.task('no-cleanup', (done) => {
   dutil.logMessage(
     'no-cleanup',
-    'Disabling cleanup of distribution directories.'
+    'Disabling cleanup of distribution directories.',
   );
   cFlags.cleanup = false;
   done();
-
 });
diff --git a/config/gulp/fonts.js b/config/gulp/fonts.js
index 4ad3747a48..0a9d4fcda7 100644
--- a/config/gulp/fonts.js
+++ b/config/gulp/fonts.js
@@ -1,14 +1,13 @@
-var gulp = require('gulp');
-var dutil = require('./doc-util');
-var task = 'fonts';
+const gulp = require('gulp');
+const dutil = require('./doc-util');
 
-gulp.task(task, function (done) {
+const task = 'fonts';
 
+gulp.task(task, (done) => {
   dutil.logMessage(task, 'Copying Fonts');
-
-  var stream = gulp.src('src/fonts/**/*')
+  const stream = gulp.src('src/fonts/**/*')
     .pipe(gulp.dest('dist/fonts'));
 
+  done();
   return stream;
-
 });
diff --git a/config/gulp/images.js b/config/gulp/images.js
index 9f860c62e4..0452bf68ba 100644
--- a/config/gulp/images.js
+++ b/config/gulp/images.js
@@ -1,14 +1,13 @@
-var gulp = require('gulp');
-var dutil = require('./doc-util');
-var task = 'images';
+const gulp = require('gulp');
+const dutil = require('./doc-util');
 
-gulp.task(task, function (done) {
+const task = 'images';
 
+gulp.task(task, (done) => {
   dutil.logMessage(task, 'Copying Images');
-
-  var stream = gulp.src('src/img/**/*')
+  const stream = gulp.src('src/img/**/*')
     .pipe(gulp.dest('dist/img'));
 
+  done();
   return stream;
-
 });
diff --git a/config/gulp/javascript.js b/config/gulp/javascript.js
index e4c4ea6e9f..45d7feedde 100644
--- a/config/gulp/javascript.js
+++ b/config/gulp/javascript.js
@@ -1,30 +1,31 @@
-var child_process = require('child_process');
-var gulp = require('gulp');
-var log = require('fancy-log');
-var dutil = require('./doc-util');
-var browserify = require('browserify');
-var buffer = require('vinyl-buffer');
-var source = require('vinyl-source-stream');
-var uglify = require('gulp-uglify');
-var sourcemaps = require('gulp-sourcemaps');
-var rename = require('gulp-rename');
-var eslint = require('gulp-eslint');
-var task = 'javascript';
+const buffer = require('vinyl-buffer');
+const browserify = require('browserify');
+const childProcess = require('child_process');
+const eslint = require('gulp-eslint');
+const gulp = require('gulp');
+const log = require('fancy-log');
+const rename = require('gulp-rename');
+const source = require('vinyl-source-stream');
+const sourcemaps = require('gulp-sourcemaps');
+const uglify = require('gulp-uglify');
+const dutil = require('./doc-util');
+const cFlags = require('./cflags');
 
-gulp.task(task, function (done) {
+const task = 'javascript';
 
+gulp.task(task, (done) => {
   dutil.logMessage(task, 'Compiling JavaScript');
 
-  var defaultStream = browserify({
+  const defaultStream = browserify({
     entries: 'src/js/start.js',
     debug: true,
   })
-  .transform('babelify', {
-    global: true,
-    presets: ['es2015'],
-  });
+    .transform('babelify', {
+      global: true,
+      presets: ['es2015'],
+    });
 
-  var stream = defaultStream.bundle()
+  const stream = defaultStream.bundle()
     .pipe(source('uswds.js')) // XXX why is this necessary?
     .pipe(buffer())
     .pipe(rename({ basename: dutil.pkg.name }))
@@ -44,37 +45,36 @@ gulp.task(task, function (done) {
     .pipe(sourcemaps.write('.'))
     .pipe(gulp.dest('dist/js'));
 
+  done();
   return stream;
 });
 
-gulp.task('typecheck', function () {
-  return new Promise((resolve, reject) => {
-    child_process.spawn(
-      './node_modules/.bin/tsc',
-      { stdio: 'inherit' }
-    )
+gulp.task('typecheck', () => new Promise((resolve, reject) => {
+  childProcess.spawn(
+    './node_modules/.bin/tsc',
+    { stdio: 'inherit' },
+  )
     .on('error', reject)
-    .on('exit', code => {
+    .on('exit', (code) => {
       if (code === 0) {
         dutil.logMessage('typecheck', 'TypeScript likes our code!');
         resolve();
       } else {
         reject(new Error('TypeScript failed, see output for details!'));
       }
-     });
-  });
-});
+    });
+}));
 
-gulp.task('eslint', function (done) {
+gulp.task('eslint', (done) => {
   if (!cFlags.test) {
     dutil.logMessage('eslint', 'Skipping linting of JavaScript files.');
     return done();
   }
 
   return gulp.src([
-      'src/js/**/*.js',
-      'spec/**/*.js'
-    ])
+    'src/js/**/*.js',
+    'spec/**/*.js',
+  ])
     .pipe(eslint({
       fix: true,
     }))
diff --git a/config/gulp/release.js b/config/gulp/release.js
index 0da0101f29..76c9fa6a7a 100644
--- a/config/gulp/release.js
+++ b/config/gulp/release.js
@@ -1,28 +1,23 @@
+const del = require('del');
+const spawn = require('cross-spawn');
 const gulp = require('gulp');
 const dutil = require('./doc-util');
-const spawn = require('cross-spawn');
-const del = require('del');
 
 const task = 'release';
 
 gulp.task('make-tmp-directory', () => {
-
   dutil.logMessage('make-tmp-directory', 'Creating temporary release directory.');
 
   return gulp.src('dist/**/*')
     .pipe(gulp.dest(dutil.dirName));
-
 });
 
 gulp.task('clean-tmp-directory', () => {
-
   dutil.logMessage('clean-tmp-directory', 'Deleting temporary release directory.');
-
   return del(dutil.dirName);
 });
 
 gulp.task('zip-archives', (done) => {
-
   const zip = spawn('zip', [
     '--log-info',
     '-r',
@@ -34,30 +29,21 @@ gulp.task('zip-archives', (done) => {
   dutil.logMessage('zip-archives', `Creating a zip archive in dist/${dutil.dirName}.zip`);
 
   zip.stdout.on('data', (data) => {
-
     if (/[\w\d]+/.test(data)) {
-
       dutil.logData('zip-archives', data);
-
     }
-
   });
 
   zip.stderr.on('data', (data) => {
-
     dutil.logError('zip-archives', data);
-
   });
 
   zip.on('error', (error) => {
-
     dutil.logError('zip-archives', 'Failed to create a zip archive');
-
     done(error);
   });
 
   zip.on('close', (code) => { if (code === 0) { done(); } });
-
 });
 
 gulp.task(task,
@@ -70,5 +56,4 @@ gulp.task(task,
     'make-tmp-directory',
     'zip-archives',
     'clean-tmp-directory',
-  )
-);
\ No newline at end of file
+  ));
diff --git a/config/gulp/sass.js b/config/gulp/sass.js
index 91135b6820..3d3e22c72a 100644
--- a/config/gulp/sass.js
+++ b/config/gulp/sass.js
@@ -1,67 +1,57 @@
-var gulp = require('gulp');
-var dutil = require('./doc-util');
-var sass = require('gulp-sass');
-var postcss = require('gulp-postcss');
-var cssnano = require('cssnano');
-var packCSS = require('css-mqpacker');
-var autoprefixer = require('autoprefixer');
-var sourcemaps = require('gulp-sourcemaps');
-var rename = require('gulp-rename');
-var gulpStylelint = require('gulp-stylelint');
 const { formatters } = require('stylelint');
-var pkg = require('../../package.json');
-var path = require('path');
-var filter = require('gulp-filter');
-var replace = require('gulp-replace');
-var stripCssComments = require('gulp-strip-css-comments');
-var del = require('del');
-var task = 'sass';
-var autoprefixerOptions = require('./browsers');
-var path = require('path');
+const autoprefixer = require('autoprefixer');
+const cssnano = require('cssnano');
+const discardComments = require('postcss-discard-comments');
+const filter = require('gulp-filter');
+const gulp = require('gulp');
+const gulpStylelint = require('gulp-stylelint');
+const packCSS = require('css-mqpacker');
+const postcss = require('gulp-postcss');
+const replace = require('gulp-replace');
+const rename = require('gulp-rename');
+const sass = require('gulp-sass');
+const sourcemaps = require('gulp-sourcemaps');
+const autoprefixerOptions = require('./browsers');
+const dutil = require('./doc-util');
+const pkg = require('../../package.json');
 
-var entryFileFilter = filter('uswds.scss', { restore: true });
-var normalizeCssFilter = filter('**/normalize.css', { restore: true });
+const task = 'sass';
+const normalizeCssFilter = filter('**/normalize.css', { restore: true });
 
 const IGNORE_STRING = 'This file is ignored';
-const ignoreStylelintIgnoreWarnings = lintResults =>
-  formatters.string(
-    lintResults.reduce((memo, result) => {
-      const { warnings } = result;
-      const fileIsIgnored = warnings.some((warning) => {
-        return RegExp(IGNORE_STRING, 'i').test(warning.text);
-      });
+const ignoreStylelintIgnoreWarnings = lintResults => formatters.string(
+  lintResults.reduce((memo, result) => {
+    const { warnings } = result;
+    const fileIsIgnored = warnings.some(warning => RegExp(IGNORE_STRING, 'i').test(warning.text));
 
-      if (!fileIsIgnored) {
-        memo.push(result);
-      }
+    if (!fileIsIgnored) {
+      memo.push(result);
+    }
 
-      return memo;
-    }, [])
-  );
-
-gulp.task('stylelint', () => {
-  return gulp
-    .src('./src/stylesheets/**/*.scss')
-    .pipe(gulpStylelint({
-      failAfterError: true,
-      reporters: [{
-        formatter: ignoreStylelintIgnoreWarnings, console: true,
-      }],
-      syntax: 'scss',
-    }))
-    .on('error', dutil.logError);
-});
+    return memo;
+  }, []),
+);
 
-gulp.task('copy-vendor-sass', function () {
+gulp.task('stylelint', () => gulp
+  .src('./src/stylesheets/**/*.scss')
+  .pipe(gulpStylelint({
+    failAfterError: true,
+    reporters: [{
+      formatter: ignoreStylelintIgnoreWarnings, console: true,
+    }],
+    syntax: 'scss',
+  }))
+  .on('error', dutil.logError));
 
+gulp.task('copy-vendor-sass', () => {
   dutil.logMessage('copy-vendor-sass', 'Compiling vendor CSS');
 
-  var stream = gulp.src([
+  const stream = gulp.src([
     './node_modules/normalize.css/normalize.css',
   ])
     .pipe(normalizeCssFilter)
     .pipe(rename('_normalize.scss'))
-    .on('error', function (error) {
+    .on('error', (error) => {
       dutil.logError('copy-vendor-sass', error);
     })
     .pipe(gulp.dest('src/stylesheets/lib'));
@@ -69,45 +59,49 @@ gulp.task('copy-vendor-sass', function () {
   return stream;
 });
 
-gulp.task('copy-dist-sass', function () {
+gulp.task('copy-dist-sass', () => {
   dutil.logMessage('copy-dist-sass', 'Copying all Sass to dist dir');
 
-  var stream = gulp.src('src/stylesheets/**/*.scss')
+  const stream = gulp.src('src/stylesheets/**/*.scss')
     .pipe(gulp.dest('dist/scss'));
 
   return stream;
 });
 
-gulp.task('sass', gulp.series('copy-vendor-sass', 
-  function () {
-      dutil.logMessage(task, 'Compiling Sass');
-      var plugins = [
-        autoprefixer(autoprefixerOptions),
-        packCSS({ sort: true }),
-        cssnano(({ autoprefixer: { browsers: autoprefixerOptions }}))
-      ];
+gulp.task('sass', gulp.series('copy-vendor-sass',
+  () => {
+    dutil.logMessage(task, 'Compiling Sass');
+    const pluginsProcess = [
+      discardComments(),
+      autoprefixer(autoprefixerOptions),
+      packCSS({ sort: true }),
+    ];
+    const pluginsMinify = [
+      autoprefixer(autoprefixerOptions),
+      packCSS({ sort: true }),
+      cssnano(({ autoprefixer: { browsers: autoprefixerOptions } })),
+    ];
 
-      var stream = gulp.src('src/stylesheets/*.scss')
-        .pipe(replace(
-          /\buswds @version\b/g,
-          'uswds v' + pkg.version
-        ))
-        .pipe(sourcemaps.init({ largeFile: true }))
-        .pipe(
-          sass({
-            outputStyle: 'expanded',
-          })
-            .on('error', sass.logError)
-        )
-        .pipe(postcss(plugins))
-        .pipe(gulp.dest('dist/css'))
-        .pipe(rename({
-          suffix: '.min',
-        }))
-        .pipe(sourcemaps.write('.'))
-        .pipe(gulp.dest('dist/css'));
+    const stream = gulp.src('src/stylesheets/*.scss')
+      .pipe(replace(
+        /\buswds @version\b/g,
+        `uswds v${pkg.version}`,
+      ))
+      .pipe(sourcemaps.init({ largeFile: true }))
+      .pipe(
+        sass({
+          outputStyle: 'expanded',
+        })
+          .on('error', sass.logError),
+      )
+      .pipe(postcss(pluginsProcess))
+      .pipe(gulp.dest('dist/css'))
+      .pipe(rename({
+        suffix: '.min',
+      }))
+      .pipe(postcss(pluginsMinify))
+      .pipe(sourcemaps.write('.'))
+      .pipe(gulp.dest('dist/css'));
 
-      return stream;
-  }
-)
-);
+    return stream;
+  }));
diff --git a/config/gulp/test.js b/config/gulp/test.js
index ac48b3f568..f30ff5c0c6 100644
--- a/config/gulp/test.js
+++ b/config/gulp/test.js
@@ -1,32 +1,25 @@
-var gulp = require('gulp');
-var mocha = require('gulp-spawn-mocha');
+const gulp = require('gulp');
+const mocha = require('gulp-spawn-mocha');
 
-var mochaOpts = {
+const mochaOpts = {
   opts: 'spec/mocha.opts',
 };
 
-gulp.task('test', function () {
-  return gulp.src('spec/**/*.spec.js')
-    .pipe(mocha(mochaOpts));
-});
+gulp.task('test', () => gulp.src('spec/**/*.spec.js')
+  .pipe(mocha(mochaOpts)));
 
-gulp.task('regression', () => {
-  return gulp.src('spec/headless-chrome.js')
-    .pipe(mocha(mochaOpts));
-});
+gulp.task('regression', () => gulp.src('spec/headless-chrome.js')
+  .pipe(mocha(mochaOpts)));
 
-gulp.task('cover', function () {
-  return gulp.src('spec/unit/**/*.spec.js')
-    .pipe(mocha(Object.assign(mochaOpts, {
-      istanbul: true
-    })));
-});
+gulp.task('cover', () => gulp.src('spec/unit/**/*.spec.js')
+  .pipe(mocha(Object.assign(mochaOpts, {
+    istanbul: true,
+  }))));
 
 gulp.task('test:watch', () => {
   gulp.watch([
     'spec/**/*.spec.js',
     'src/js/**/*.js',
   ],
-  gulp.series('test'),
-  );
+  gulp.series('test'));
 });
diff --git a/package-lock.json b/package-lock.json
index ebe8421891..be3daaed6a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16290,40 +16290,12 @@
       }
     },
     "postcss-discard-comments": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/postcss-discard-comments/-/postcss-discard-comments-4.0.1.tgz",
-      "integrity": "sha512-Ay+rZu1Sz6g8IdzRjUgG2NafSNpp2MSMOQUb+9kkzzzP+kh07fP0yNbhtFejURnyVXSX3FYy2nVNW1QTnNjgBQ==",
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/postcss-discard-comments/-/postcss-discard-comments-4.0.2.tgz",
+      "integrity": "sha512-RJutN259iuRf3IW7GZyLM5Sw4GLTOH8FmsXBnv8Ab/Tc2k4SR4qbV4DNbyyY4+Sjo362SyDmW2DQ7lBSChrpkg==",
       "dev": true,
       "requires": {
         "postcss": "^7.0.0"
-      },
-      "dependencies": {
-        "postcss": {
-          "version": "7.0.14",
-          "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.14.tgz",
-          "integrity": "sha512-NsbD6XUUMZvBxtQAJuWDJeeC4QFsmWsfozWxCJPWf3M55K9iu2iMDaKqyoOdTJ1R4usBXuxlVFAIo8rZPQD4Bg==",
-          "dev": true,
-          "requires": {
-            "chalk": "^2.4.2",
-            "source-map": "^0.6.1",
-            "supports-color": "^6.1.0"
-          }
-        },
-        "source-map": {
-          "version": "0.6.1",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
-          "dev": true
-        },
-        "supports-color": {
-          "version": "6.1.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
-          "integrity": "sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==",
-          "dev": true,
-          "requires": {
-            "has-flag": "^3.0.0"
-          }
-        }
       }
     },
     "postcss-discard-duplicates": {
diff --git a/package.json b/package.json
index 0b44c9d1e6..6dad90b816 100644
--- a/package.json
+++ b/package.json
@@ -109,7 +109,6 @@
     "gulp-sass": "^4.0.2",
     "gulp-sourcemaps": "^2.6.5",
     "gulp-spawn-mocha": "^5.0.1",
-    "gulp-strip-css-comments": "^2.0.0",
     "gulp-stylelint": "^8.0.0",
     "gulp-uglify": "^3.0.0",
     "handlebars": "^4.1.0",
@@ -123,6 +122,7 @@
     "node-sass": "^4.11.0",
     "normalize.css": "^3.0.3",
     "nswatch": "^0.2.0",
+    "postcss-discard-comments": "^4.0.2",
     "resemblejs": "^3.0.0",
     "should": "^11.2.1",
     "sinon": "^2.3.8",
diff --git a/spec/delayed-root-suite.js b/spec/delayed-root-suite.js
index 1690a8798a..bee79cfa70 100755
--- a/spec/delayed-root-suite.js
+++ b/spec/delayed-root-suite.js
@@ -17,8 +17,6 @@ Promise.all([
   exports.fractalLoad,
 ]).then(() => {
   run();
-}).catch(e => {
-  console.log('An error occurred while loading tests.');
-  console.log(e);
+}).catch(() => {
   process.exit(1);
 });
diff --git a/spec/headless-chrome.js b/spec/headless-chrome.js
index c23e62e72a..46f98ffe07 100755
--- a/spec/headless-chrome.js
+++ b/spec/headless-chrome.js
@@ -4,7 +4,7 @@ const ChromeFractalTester = require('./chrome-fractal-tester');
 const axeTester = require('./axe-tester');
 
 class Device {
-  constructor (name, metrics) {
+  constructor(name, metrics) {
     this.name = name;
     this.metrics = Object.assign({
       deviceScaleFactor: 1,
@@ -13,9 +13,9 @@ class Device {
     }, metrics);
   }
 
-  get description () {
+  get description() {
     const m = this.metrics;
-    const parts = [ `${m.width}x${m.height}` ];
+    const parts = [`${m.width}x${m.height}`];
 
     if (m.deviceScaleFactor !== 1) parts.push(`@ ${m.deviceScaleFactor}x`);
     if (m.mobile) parts.push('mobile');
@@ -41,11 +41,11 @@ const DEVICES = [
   }),
 ];
 
-fractalLoad.then(function runFractalTester() {
+fractalLoad.then(() => {
   const chromeFractalTester = new ChromeFractalTester();
   const { handles } = chromeFractalTester;
 
-  describe('fractal component', function () {
+  describe('fractal component', function setupTester() {
     this.timeout(20000);
 
     before('setup ChromeFractalTester', chromeFractalTester.setup);
@@ -58,7 +58,7 @@ fractalLoad.then(function runFractalTester() {
       }
 
       after('create visual regression testing metadata',
-            () => VisualRegressionTester.writeMetadata(handles, DEVICES));
+        () => VisualRegressionTester.writeMetadata(handles, DEVICES));
     }
 
     handles.forEach((handle) => {
@@ -70,12 +70,10 @@ fractalLoad.then(function runFractalTester() {
           return;
         }
 
-        before('init chrome devtools protocol', () => {
-          return chromeFractalTester.createChromeDevtoolsProtocol()
-            .then(client => { cdp = client; });
-        });
+        before('init chrome devtools protocol', () => chromeFractalTester.createChromeDevtoolsProtocol()
+          .then((client) => { cdp = client; }));
 
-        before(`load fractal component in chrome`, function () {
+        before('load fractal component in chrome', function waitBeforeChrome() {
           this.timeout(20000);
           return chromeFractalTester.loadFractalPreview(cdp, handle);
         });
@@ -84,11 +82,9 @@ fractalLoad.then(function runFractalTester() {
 
         after('shutdown chrome devtools protocol', () => cdp.close());
 
-        DEVICES.forEach(device => {
+        DEVICES.forEach((device) => {
           describe(`on ${device.description}`, () => {
-            before('set device metrics', () => {
-              return cdp.Emulation.setDeviceMetricsOverride(device.metrics);
-            });
+            before('set device metrics', () => cdp.Emulation.setDeviceMetricsOverride(device.metrics));
 
             it('has no aXe violations', () => axeTester.run(cdp));
 
@@ -96,16 +92,16 @@ fractalLoad.then(function runFractalTester() {
               const vrt = new VisualRegressionTester({ handle, device });
               if (vrt.doesGoldenFileExist()) {
                 it('matches golden screenshot',
-                   () => vrt.screenshot(cdp)
-                            .then(vrt.ensureMatchesGoldenFile));
+                  () => vrt.screenshot(cdp)
+                    .then(vrt.ensureMatchesGoldenFile));
               } else {
                 it('is the new golden screenshot',
-                   () => vrt.screenshot(cdp).then(vrt.saveToGoldenFile));
+                  () => vrt.screenshot(cdp).then(vrt.saveToGoldenFile));
               }
             }
           });
         });
       });
-    }); 
+    });
   });
 });
diff --git a/spec/sass/include.spec.js b/spec/sass/include.spec.js
index 34ecdd9eed..b43c3c81ba 100755
--- a/spec/sass/include.spec.js
+++ b/spec/sass/include.spec.js
@@ -13,10 +13,6 @@ describe('include paths', () => {
   it('can be loaded with @import "uswds"', () => {
     render('@import "uswds";', [includePath]);
   });
-
-  it('can be loaded with @import "all"', () => {
-    render('@import "all";', [includePath]);
-  });
 });
 
 describe('standalone dist scss', () => {
@@ -29,8 +25,4 @@ describe('standalone dist scss', () => {
   it('can be loaded with @import "uswds"', () => {
     render('@import "uswds";', [distScssPath]);
   });
-
-  it('can be loaded with @import "all"', () => {
-    render('@import "all";', [distScssPath]);
-  });
 });
diff --git a/src/js/components/navigation.js b/src/js/components/navigation.js
index 134d56380b..3095d22c3c 100755
--- a/src/js/components/navigation.js
+++ b/src/js/components/navigation.js
@@ -25,7 +25,7 @@ let navActive;
 
 const isActive = () => document.body.classList.contains(ACTIVE_CLASS);
 
-const toggleNav = function (active) {
+const toggleNav = (active) => {
   const { body } = document;
   const safeActive = typeof active === 'boolean' ? active : !isActive();
 
@@ -85,7 +85,7 @@ navigation = behavior({
         hideActiveNavDropdown();
       } else {
         navActive = this;
-        toggle(navActive, true)
+        toggle(navActive, true);
       }
 
       // Do this so the event handler on the body doesn't fire