diff --git a/golden/package-lock.json b/golden/package-lock.json
index 265ff6b..3777b63 100644
--- a/golden/package-lock.json
+++ b/golden/package-lock.json
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@@ -87,6 +93,12 @@
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+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-3.0.0.tgz",
+          "integrity": "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==",
+          "dev": true,
+          "requires": {
+            "p-limit": "^2.0.0"
+          }
+        },
+        "p-try": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
+          "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==",
+          "dev": true
+        },
         "readdirp": {
           "version": "2.2.1",
           "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-2.2.1.tgz",
@@ -15378,14 +12086,11 @@
           "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
           "dev": true
         },
-        "strip-ansi": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
-          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
-          "dev": true,
-          "requires": {
-            "ansi-regex": "^2.0.0"
-          }
+        "semver": {
+          "version": "6.3.0",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
+          "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==",
+          "dev": true
         },
         "supports-color": {
           "version": "6.1.0",
@@ -15548,6 +12253,12 @@
         "string-width": "^1.0.2 || 2"
       }
     },
+    "word-wrap": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
+      "integrity": "sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ==",
+      "dev": true
+    },
     "wordwrap": {
       "version": "0.0.3",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
@@ -15617,14 +12328,6 @@
         "async-limiter": "~1.0.0",
         "safe-buffer": "~5.1.0",
         "ultron": "~1.1.0"
-      },
-      "dependencies": {
-        "safe-buffer": {
-          "version": "5.1.2",
-          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
-          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
-          "dev": true
-        }
       }
     },
     "xmlhttprequest-ssl": {
@@ -15646,15 +12349,15 @@
       "dev": true
     },
     "yallist": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
+      "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==",
       "dev": true
     },
     "yargs": {
-      "version": "13.3.0",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.0.tgz",
-      "integrity": "sha512-2eehun/8ALW8TLoIl7MVaRUrg+yCnenu8B4kBlRxj3GJGDKU1Og7sMXPNm1BYyM1DOJmTZ4YeN/Nwxv+8XJsUA==",
+      "version": "13.3.2",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.2.tgz",
+      "integrity": "sha512-AX3Zw5iPruN5ie6xGRIDgqkT+ZhnRlZMLMHAs8tg7nRruy2Nb+i5o9bwghAogtM08q1dpr2LVoS8KSTMYpWXUw==",
       "dev": true,
       "requires": {
         "cliui": "^5.0.0",
@@ -15666,7 +12369,7 @@
         "string-width": "^3.0.0",
         "which-module": "^2.0.0",
         "y18n": "^4.0.0",
-        "yargs-parser": "^13.1.1"
+        "yargs-parser": "^13.1.2"
       },
       "dependencies": {
         "ansi-regex": {
@@ -15675,6 +12378,49 @@
           "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
           "dev": true
         },
+        "find-up": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-3.0.0.tgz",
+          "integrity": "sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==",
+          "dev": true,
+          "requires": {
+            "locate-path": "^3.0.0"
+          }
+        },
+        "locate-path": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-3.0.0.tgz",
+          "integrity": "sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==",
+          "dev": true,
+          "requires": {
+            "p-locate": "^3.0.0",
+            "path-exists": "^3.0.0"
+          }
+        },
+        "p-limit": {
+          "version": "2.3.0",
+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz",
+          "integrity": "sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==",
+          "dev": true,
+          "requires": {
+            "p-try": "^2.0.0"
+          }
+        },
+        "p-locate": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-3.0.0.tgz",
+          "integrity": "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==",
+          "dev": true,
+          "requires": {
+            "p-limit": "^2.0.0"
+          }
+        },
+        "p-try": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
+          "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==",
+          "dev": true
+        },
         "string-width": {
           "version": "3.1.0",
           "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
@@ -15698,9 +12444,9 @@
       }
     },
     "yargs-parser": {
-      "version": "13.1.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
-      "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
+      "version": "13.1.2",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
+      "integrity": "sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==",
       "dev": true,
       "requires": {
         "camelcase": "^5.0.0",
@@ -15719,12 +12465,13 @@
       }
     },
     "yauzl": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.4.1.tgz",
-      "integrity": "sha1-lSj0QtqxsihOWLQ3m7GU4i4MQAU=",
+      "version": "2.10.0",
+      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
+      "integrity": "sha1-x+sXyT4RLLEIb6bY5R+wZnt5pfk=",
       "dev": true,
       "requires": {
-        "fd-slicer": "~1.0.1"
+        "buffer-crc32": "~0.2.3",
+        "fd-slicer": "~1.1.0"
       }
     },
     "yeast": {
diff --git a/golden/package.json b/golden/package.json
index 6abe755..f0525ca 100644
--- a/golden/package.json
+++ b/golden/package.json
@@ -13,11 +13,16 @@
     "autoprefixer": "~9.6.1",
     "bower": "~1.8.8",
     "chai": "~4.2.0",
+    "clean-webpack-plugin": "^0.1.19",
     "copy-webpack-plugin": "~5.0.4",
+    "css-loader": "^3.5.3",
     "cssmin": "~0.4.3",
+    "cssnano": "^3.10.0",
     "fetch-mock": "~7.3.9",
     "glob": "^7.1.4",
+    "html-loader": "^0.5.5",
     "html-minifier": "~4.0.0",
+    "html-webpack-plugin": "^4.3.0",
     "karma": "~4.3.0",
     "karma-chai": "~0.1.0",
     "karma-chai-dom": "^1.1.0",
@@ -26,11 +31,14 @@
     "karma-mocha": "~1.3.0",
     "karma-sinon": "^1.0.5",
     "karma-webpack": "~4.0.2",
+    "mini-css-extract-plugin": "^0.9.0",
     "mocha": "~6.2.0",
     "native-promise-only": "~0.8.1",
+    "node-sass": "^4.14.1",
     "postcss-cli": "~6.1.3",
-    "pulito": "~4.4.0",
+    "postcss-loader": "^2.1.6",
     "puppeteer": "2.0.0",
+    "sass-loader": "^7.3.1",
     "sinon": "^7.4.2",
     "uglify-js": "~3.6.0",
     "vulcanize": "~1.16.0",
diff --git a/golden/pulito/README.md b/golden/pulito/README.md
new file mode 100644
index 0000000..71822d0
--- /dev/null
+++ b/golden/pulito/README.md
@@ -0,0 +1,5 @@
+The files in this directory were copied from the
+[Pulito](https://github.com/google/pulito) repository to facilitate iterating
+on Gold's Webpack configuration locally while we experiment with TypeScript.
+
+Any changes to these files will eventually be backported to Pulito.
diff --git a/golden/pulito/dev/postcss.config.js b/golden/pulito/dev/postcss.config.js
new file mode 100644
index 0000000..e3ad090
--- /dev/null
+++ b/golden/pulito/dev/postcss.config.js
@@ -0,0 +1,6 @@
+// postcss config used in all development webpack.common.js configs.
+module.exports = {
+  plugins: {
+    'autoprefixer': {},
+  }
+}
diff --git a/golden/pulito/prod/postcss.config.js b/golden/pulito/prod/postcss.config.js
new file mode 100644
index 0000000..535e926
--- /dev/null
+++ b/golden/pulito/prod/postcss.config.js
@@ -0,0 +1,16 @@
+// postcss config used in all production webpack.common.js configs.
+module.exports = {
+  plugins: [
+    require('autoprefixer')(),
+    require('cssnano')({
+      // Since cssnano ToT is at >4, the docs on the website are incorrect
+      // as to what is and is not on by default. Further, the names
+      // appear to have changed slightly. Until pulito is upgraded to
+      // use cssnano 4.0, the best place to look for the real names is
+      // https://github.com/cssnano/cssnano/blob/v3.10.0/metadata.toml
+      'postcss-reduce-idents': false,
+      'postcss-discard-overridden': false,
+      'postcss-discard-unused': false,
+    }),
+  ]
+}
\ No newline at end of file
diff --git a/golden/pulito/webpack.common.js b/golden/pulito/webpack.common.js
new file mode 100644
index 0000000..d15ab13
--- /dev/null
+++ b/golden/pulito/webpack.common.js
@@ -0,0 +1,304 @@
+// Copyright 2018 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+// The commonBuilder function generates a common configuration for webpack.
+// You can require() it at the start of your webpack.config.js and then make
+// modifications to it from there. Users should at a minimum fill in the entry
+// points.  See webpack.config.js in this directory as an example.
+//
+// Usage:
+//    A webpack.config.js can be as simple as:
+//
+//       const commonBuilder = require('pulito');
+//       module.exports = (env, argv) => commonBuilder(env, argv, __dirname);
+//
+//    For an application you need to add the entry points and associate them
+//    with HTML files:
+//
+//        const commonBuilder = require('pulito');
+//        const HtmlWebpackPlugin = require('html-webpack-plugin');
+//
+//        module.exports = (env, argv) => {
+//          let common = commonBuilder(env, argv, __dirname);
+//          common.entry.index = './pages/index.js'
+//          common.plugins.push(
+//              new HtmlWebpackPlugin({
+//                filename: 'index.html',
+//                template: './pages/index.html',
+//                chunks: ['index'],
+//              })
+//          );
+//        }
+//
+//    Note that argv.mode will be set to either 'production', 'development',
+//    or '' depending on the --mode flag passed to the webpack cli.
+//
+// You do not need to add any of the plugins or loaders used here to your
+// local package.json, on the other hand, if you add new loaders or plugins
+// in your local project then you should 'npm add' them to your local
+// package.json.
+//
+//     build:
+//        npx webpack --mode=development
+//
+//     release:
+//        npx webpack --mode=production
+//
+const { glob } = require('glob');
+const path = require('path');
+const fs = require('fs')
+const { basename, join, resolve } = require('path')
+const CleanWebpackPlugin = require('clean-webpack-plugin');
+const MiniCssExtractPlugin = require('mini-css-extract-plugin');
+const HtmlWebpackPlugin = require('html-webpack-plugin');
+
+const minifyOptions = {
+  caseSensitive: true,
+  collapseBooleanAttributes: true,
+  collapseWhitespace: true,
+  // this handles CSS minification in the .js files. For options
+  // involving minifying .[s]css files, see ./**/postcss.config.js
+  minifyCSS: true,
+  minifyJS: true,
+  minifyURLS: true,
+  removeOptionalTags: true,
+  removeRedundantAttributes: true,
+  removeScriptTypeAttributes: true,
+  removeStyleLinkTypeAttributes: true,
+};
+
+
+/* A function that will look at all subdirectories of 'dir'/modules
+ * and adds all demo pages it finds for custom elements it finds there.
+ *
+ * Presumes that each element will have a file structure of:
+ *
+ *    push-selection-sk/
+ *      index.js
+ *      push-selection-sk-demo.html
+ *      push-selection-sk-demo.js
+ *      push-selection-sk.css
+ *      push-selection-sk.js
+ *
+ * Where the -demo.html and -demo.js files are only used to demo
+ * the element.
+ *
+ * The function will find those demo files and do the equivalent
+ * of the following to the webpack_config:
+ *
+ *      webpack_config.entry.["pusk-selection-sk"] = './push-selection-sk/push-selection-sk-demo.js';
+ *      webpack_config.plugins.push(
+ *        new HtmlWebpackPlugin({
+ *          filename: 'push-selection-sk.html',
+ *          template: './push-selection-sk/push-selection-sk-demo.html',
+ *        }),
+ *      );
+ *
+ */
+function demoFinder(dir, webpack_config) {
+  // Look at all sub-directories of dir and if a directory contains
+  // both a -demo.html and -demo.js file then add the corresponding
+  // entry points and Html plugins to the config.
+
+  // Find all the dirs below 'dir'.
+  const isDir = filename => fs.lstatSync(filename).isDirectory()
+  const moduleDir = path.resolve(dir, 'modules');
+  const dirs = fs.readdirSync(moduleDir).map(name => join(moduleDir, name)).filter(isDir);
+
+  dirs.forEach(d => {
+    // Look for both a *-demo.js and *-demo.html file in the directory.
+    const files = fs.readdirSync(d);
+    let demoHTML = '';
+    let demoJS = '';
+    files.forEach(file => {
+      if (file.endsWith('-demo.html')) {
+        if (!!demoHTML) {
+          throw 'Only one -demo.html file is allowed per directory: ' + file;
+        }
+        demoHTML = file;
+      }
+      if (file.endsWith('-demo.js')) {
+        if (demoJS != '') {
+          throw 'Only one -demo.js file is allowed per directory: ' + file;
+        }
+        demoJS = file;
+      }
+    });
+    if (!!demoJS && !!demoHTML) {
+      let name = basename(d);
+      webpack_config.entry[name] = join(d, demoJS);
+      webpack_config.plugins.push(
+        new HtmlWebpackPlugin({
+          filename: name + '.html',
+          template: join(d, demoHTML),
+          chunks: [name],
+        }),
+      );
+    } else if (!!demoJS || !!demoHTML) {
+      console.log("WARNING: An element needs both a *-demo.js and a *-demo.html file.");
+    }
+  });
+
+  return webpack_config
+}
+
+
+/* A function that will look at all subdirectories of 'dir'/pages
+ * and adds entries for each page it finds there.
+ *
+ * Presumes that each page will have both a JS and an HTML file.
+ *
+ *    pages/
+ *      index.js
+ *      index.html
+ *      search.js
+ *      search.html
+ *      ....
+ *
+ * The function will find those files and do the equivalent
+ * of the following to the webpack_config:
+ *
+ *      webpack_config.entry.['index'] = './pages/index/js';
+ *      webpack_config.plugins.push(
+ *        new HtmlWebpackPlugin({
+ *          filename: 'index.html',
+ *          template: './pages/index.html',
+ *          chunks: ['index'],
+ *        }),
+ *      );
+ *
+ */
+function pageFinder(dir, webpack_config, minifyOutput) {
+  // Look at all sub-directories of dir and if a directory contains
+  // both a -demo.html and -demo.js file then add the corresponding
+  // entry points and Html plugins to the config.
+
+  // Find all the dirs below 'dir'.
+  const pagesDir = path.resolve(dir, 'pages');
+  // Look for all *.js files, for each one look for a matching .html file.
+  // Emit into config.
+  //
+  const pagesJS = glob.sync(pagesDir + '/*.js');
+
+  pagesJS.forEach(pageJS => {
+    // Look for both a <filename>.js and <filename>.html file in the directory.
+    // Strip off ".js" from end and replace with ".html".
+    let pageHTML = pageJS.replace(/\.js$/, '.html');
+    if (!fs.existsSync(pageHTML)) {
+      console.log("WARNING: A page needs both a *.js and a *.html file.");
+      return
+    }
+
+    let baseHTML = basename(pageHTML);
+    let name = basename(pageJS, '.js');
+    webpack_config.entry[name] = pageJS;
+    let opts = {
+      filename: baseHTML,
+      template: pageHTML,
+      chunks: [name],
+    };
+    if (minifyOutput) {
+      opts.minify = minifyOptions;
+    }
+    webpack_config.plugins.push(
+      new HtmlWebpackPlugin(opts),
+    );
+  });
+
+  return webpack_config
+}
+
+module.exports = (env, argv, dirname) => {
+  // The postcss config file must be named postcss.config.js, so we store the
+  // different configs in different dirs.
+  let prefix = argv.mode === 'production' ? 'prod' : 'dev';
+  // This file handles minification, auto-prefixing, etc. See there for configuring
+  // those plugins.
+  let postCssConfig = path.resolve(__dirname, prefix, 'postcss.config.js');
+  let common = {
+    entry: {
+      // Users of webpack.common must fill in the entry point(s).
+    },
+    output: {
+      path: path.resolve(dirname, 'dist'),
+      filename: '[name]-bundle.js?[chunkhash]',
+    },
+    devServer: {
+      contentBase: path.join(__dirname, 'dist')
+    },
+    module: {
+      rules: [
+        {
+          test: /\.[s]?css$/,
+          use: [
+            {
+              loader: MiniCssExtractPlugin.loader,
+              options: {},
+            },
+            {
+              loader: 'css-loader',
+              options: {
+                importLoaders: 2, // postcss-loader and sass-loader.
+              },
+            },
+            {
+              loader: 'postcss-loader',
+              options: {
+                config: {
+                  path: postCssConfig,
+                },
+              },
+            },
+            {
+              loader: 'sass-loader', // Since SCSS is a superset of CSS we can always apply this loader.
+              options: {
+                includePaths: [__dirname],
+              }
+            }
+          ],
+        },
+        {
+          test: /\.html$/,
+          use: [
+            {
+              loader:'html-loader',
+              options: {
+                name: '[name].[ext]',
+              },
+            }
+          ],
+        },
+      ]
+    },
+    plugins: [
+      new MiniCssExtractPlugin({
+        filename: '[name]-bundle.css?[hash]',
+      }),
+      new CleanWebpackPlugin(
+        ['dist'],
+        {
+          root: path.resolve(dirname),
+        }
+      ),
+      // Users of pulito can append any plugins they want, but they
+      // need to make sure they installed them in their project via npm.
+    ],
+  };
+  common = pageFinder(dirname, common, argv.mode === 'production');
+  if (argv.mode !== 'production') {
+    common = demoFinder(dirname, common);
+  }
+  return common;
+};
diff --git a/golden/webpack.config.js b/golden/webpack.config.js
index 87b5bd2..212a213 100644
--- a/golden/webpack.config.js
+++ b/golden/webpack.config.js
@@ -1,4 +1,4 @@
-const commonBuilder = require('pulito');
+const commonBuilder = require('./pulito/webpack.common.js');
 const CopyWebpackPlugin = require('copy-webpack-plugin');
 const { resolve } = require('path');