diff --git a/.gitignore b/.gitignore
index 664e6d7042..cfb5a7fb23 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,4 @@ pkg/*
 .internal_test_app
 .vagrant
 /spec/examples.txt
+node_modules/*
diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000000..1bba312420
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,23 @@
+.*
+Gemfile
+Rakefile
+Vagrantfile
+app/assets/images
+app/controllers
+app/helpers
+app/models
+app/presenters
+app/services
+app/views
+blacklight.gemspec
+config/locales
+config/routes.rb
+coverage
+db
+lib
+pkg
+provision.sh
+solr
+spec
+tasks
+template.demo.rb
diff --git a/README.md b/README.md
index 999af6819f..8d3e745758 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ You can use Blacklight to enable searching and browsing of your collections.
 Blacklight uses the [Apache Solr](http://lucene.apache.org/solr) search engine
 to search full text and/or metadata.  Blacklight has a highly
 configurable Ruby on Rails front-end. Blacklight was originally developed at
-the University of Virginia Library and is made public under an Apache 2.0 license. 
+the University of Virginia Library and is made public under an Apache 2.0 license.
 
 ## Installation
 
@@ -38,5 +38,81 @@ rails generate blacklight:install
 * Bundler
 * Rails 5.0+
 
-## Configuring Apache Solr 
+## Configuring Apache Solr
 You'll also want some information about how Blacklight expects [Apache Solr](http://lucene.apache.org/solr ) to run, which you can find in [README_SOLR](https://github.com/projectblacklight/blacklight/wiki/README_SOLR)
+
+## Building the javascript
+The javascript is built by npm from sources in `app/javascript` into a bundle
+in `app/assets/javascripts/blacklight/blacklight.js`. This file should not be edited
+by hand as any changes would be overwritten.
+
+This is accomplished with the following steps:
+1. Install npm
+1. run `npm install` to download dependencies
+1. run `npm run-script js-compile-bundle` to build the bundle
+1. run `npm publish` to push the javascript package to https://npmjs.org/package/blacklight-frontend
+
+## Using the javascript
+Install Webpacker
+Add blacklight-frontend as a dependency by doing:
+```
+yarn add blacklight-frontend
+```
+
+Then add these lines to `config/webpack/environment.js` as per https://getbootstrap.com/docs/4.0/getting-started/webpack/
+and https://github.com/rails/webpacker/blob/master/docs/webpack.md#plugins
+
+```js
+const webpack = require('webpack')
+
+environment.plugins.set(
+  'Provide',
+  new webpack.ProvidePlugin({
+    $: 'jquery',
+    jQuery: 'jquery',
+    jquery: 'jquery',
+    'window.jQuery': 'jquery',
+    Popper: ['popper.js', 'default'],
+  })
+)
+
+module.exports = environment
+```
+
+In you pack file (`app/javascript/packs/application.js`), require blacklight:
+```
+require('blacklight-frontend/app/assets/javascripts/blacklight/blacklight')
+```
+Then remove these requires from `app/assets/javascripts/application.js`:
+
+```
+//= require jquery
+//= require popper
+//= require twitter/typeahead
+//= require bootstrap
+```
+
+Add the following to the app/views/layouts/blacklight/base.html.erb (maybe this can be simpler)
+```
+<%= javascript_pack_tag 'application' %>
+```
+You can probably remove the `<%= javascript_include_tag %>`
+
+### Using sprockets (not webpacker)
+
+If you want to use sprockets rather than webpacker, you must ensure these dependencies are in your Gemfile (done automatically by the install generator):
+
+```
+gem 'bootstrap', '~> 4.0'
+gem 'popper_js'
+gem 'twitter-typeahead-rails', '0.11.1.pre.corejavascript'
+```
+
+Then insure these requires are in `app/assets/javascripts/application.js`  (done automatically by the install generator):
+
+```
+//= require jquery
+//= require popper
+//= require twitter/typeahead
+//= require bootstrap
+```
diff --git a/app/assets/javascripts/blacklight/blacklight.js b/app/assets/javascripts/blacklight/blacklight.js
index 7a25620038..c138612539 100644
--- a/app/assets/javascripts/blacklight/blacklight.js
+++ b/app/assets/javascripts/blacklight/blacklight.js
@@ -1,61 +1,489 @@
-// This file is generated by Blacklight. You probably don't want to edit
-//   this file directly, or you'll have to manually merge your changes if later
-//   versions of Blacklight change this file. Instead, use your own JS file
-//   which over-rides things in this JS file, as described below.
-//
-// These javascript files are compiled in via the Rails asset pipeline:
+Blacklight = function () {
+  var buffer = new Array();
+  return {
+    onLoad: function (func) {
+      buffer.push(func);
+    },
+
+    activate: function () {
+      for (var i = 0; i < buffer.length; i++) {
+        buffer[i].call();
+      }
+    },
+
+    listeners: function () {
+      var listeners = [];
+      if (typeof Turbolinks !== 'undefined' && Turbolinks.supported) {
+        // Turbolinks 5
+        if (Turbolinks.BrowserAdapter) {
+          listeners.push('turbolinks:load');
+        } else {
+          // Turbolinks < 5
+          listeners.push('page:load', 'ready');
+        }
+      } else {
+        listeners.push('ready');
+      }
+
+      return listeners.join(' ');
+    }
+  };
+}();
+
+// turbolinks triggers page:load events on page transition
+// If app isn't using turbolinks, this event will never be triggered, no prob.
+$(document).on(Blacklight.listeners(), function () {
+  Blacklight.activate();
+});
+
+$('.no-js').removeClass('no-js').addClass('js');
+/*global Bloodhound */
+
+Blacklight.onLoad(function () {
+  'use strict';
+
+  $('[data-autocomplete-enabled="true"]').each(function () {
+    var $el = $(this);
+    if ($el.hasClass('tt-hint')) {
+      return;
+    }
+    var suggestUrl = $el.data().autocompletePath;
+
+    var terms = new Bloodhound({
+      datumTokenizer: Bloodhound.tokenizers.obj.whitespace('value'),
+      queryTokenizer: Bloodhound.tokenizers.whitespace,
+      remote: {
+        url: suggestUrl + '?q=%QUERY',
+        wildcard: '%QUERY'
+      }
+    });
+
+    terms.initialize();
+
+    $el.typeahead({
+      hint: true,
+      highlight: true,
+      minLength: 2
+    }, {
+      name: 'terms',
+      displayKey: 'term',
+      source: terms.ttAdapter()
+    });
+  });
+});
+(function ($) {
+  //change form submit toggle to checkbox
+  Blacklight.do_bookmark_toggle_behavior = function () {
+    $(Blacklight.do_bookmark_toggle_behavior.selector).bl_checkbox_submit({
+      // css_class is added to elements added, plus used for id base
+      css_class: "toggle-bookmark",
+      success: function (checked, response) {
+        if (response.bookmarks) {
+          $('[data-role=bookmark-counter]').text(response.bookmarks.count);
+        }
+      }
+    });
+  };
+  Blacklight.do_bookmark_toggle_behavior.selector = "form.bookmark-toggle";
+
+  Blacklight.onLoad(function () {
+    Blacklight.do_bookmark_toggle_behavior();
+  });
+})(jQuery);
+/* A JQuery plugin (should this be implemented as a widget instead? not sure)
+   that will convert a "toggle" form, with single submit button to add/remove
+   something, like used for Bookmarks, into an AJAXy checkbox instead. 
+   
+   Apply to a form. Does require certain assumption about the form:
+    1) The same form 'action' href must be used for both ADD and REMOVE
+       actions, with the different being the hidden input name="_method"
+       being set to "put" or "delete" -- that's the Rails method to pretend
+       to be doing a certain HTTP verb. So same URL, PUT to add, DELETE
+       to remove. This plugin assumes that. 
+       
+       Plus, the form this is applied to should provide a data-doc-id 
+       attribute (HTML5-style doc-*) that contains the id/primary key
+       of the object in question -- used by plugin for a unique value for
+       DOM id's. 
+
+  Uses HTML for a checkbox compatible with Bootstrap 3. 
+       
+   Pass in options for your class name and labels:
+   $("form.something").bl_checkbox_submit({    
+        checked_label: "Selected",
+        unchecked_label: "Select",
+        progress_label: "Saving...",
+        //css_class is added to elements added, plus used for id base
+        css_class: "toggle_my_kinda_form",
+        success: function(after_success_check_state) {
+          #optional callback
+        }
+   });
+*/
+(function ($) {
+  $.fn.bl_checkbox_submit = function (arg_opts) {
+
+    this.each(function () {
+      var options = $.extend({}, $.fn.bl_checkbox_submit.defaults, arg_opts);
+
+      var form = $(this);
+      form.children().hide();
+      //We're going to use the existing form to actually send our add/removes
+      //This works conveneintly because the exact same action href is used
+      //for both bookmarks/$doc_id.  But let's take out the irrelevant parts
+      //of the form to avoid any future confusion. 
+      form.find("input[type=submit]").remove();
+
+      //View needs to set data-doc-id so we know a unique value
+      //for making DOM id
+      var unique_id = form.attr("data-doc-id") || Math.random();
+      // if form is currently using method delete to change state, 
+      // then checkbox is currently checked
+      var checked = form.find("input[name=_method][value=delete]").size() != 0;
+
+      var checkbox = $('<input type="checkbox">').addClass(options.css_class).attr("id", options.css_class + "_" + unique_id);
+      var label = $('<label>').addClass(options.css_class).attr("for", options.css_class + '_' + unique_id).attr("title", form.attr("title") || "");
+      var span = $('<span>');
+
+      label.append(checkbox);
+      label.append(" ");
+      label.append(span);
+
+      var checkbox_div = $("<div class='checkbox' />").addClass(options.css_class).append(label);
+
+      function update_state_for(state) {
+        checkbox.prop("checked", state);
+        label.toggleClass("checked", state);
+        if (state) {
+          //Set the Rails hidden field that fakes an HTTP verb
+          //properly for current state action. 
+          form.find("input[name=_method]").val("delete");
+          span.text(form.attr('data-present'));
+        } else {
+          form.find("input[name=_method]").val("put");
+          span.text(form.attr('data-absent'));
+        }
+      }
+
+      form.append(checkbox_div);
+      update_state_for(checked);
+
+      checkbox.click(function () {
+        span.text(form.attr('data-inprogress'));
+        label.attr("disabled", "disabled");
+        checkbox.attr("disabled", "disabled");
+
+        $.ajax({
+          url: form.attr("action"),
+          dataType: 'json',
+          type: form.attr("method").toUpperCase(),
+          data: form.serialize(),
+          error: function () {
+            alert("Error");
+            update_state_for(checked);
+            label.removeAttr("disabled");
+            checkbox.removeAttr("disabled");
+          },
+          success: function (data, status, xhr) {
+            //if app isn't running at all, xhr annoyingly
+            //reports success with status 0. 
+            if (xhr.status != 0) {
+              checked = !checked;
+              update_state_for(checked);
+              label.removeAttr("disabled");
+              checkbox.removeAttr("disabled");
+              options.success.call(form, checked, xhr.responseJSON);
+            } else {
+              alert("Error");
+              update_state_for(checked);
+              label.removeAttr("disabled");
+              checkbox.removeAttr("disabled");
+            }
+          }
+        });
+
+        return false;
+      }); //checkbox.click
+
+    }); //this.each      
+    return this;
+  };
+
+  $.fn.bl_checkbox_submit.defaults = {
+    //css_class is added to elements added, plus used for id base
+    css_class: "bl_checkbox_submit",
+    success: function () {} //callback
+  };
+})(jQuery);
+(function ($) {
+  Blacklight.onLoad(function () {
+    // when clicking on a link that toggles the collapsing behavior, don't do anything
+    // with the hash or the page could jump around.
+    $(document).on("click", "a[data-toggle=collapse][href='#'], [data-toggle=collapse] a[href='#']", function (event) {
+      event.preventDefault();
+    });
+  });
+})(jQuery);
+/*global Blacklight */
+
+(function ($) {
+  'use strict';
+
+  Blacklight.doResizeFacetLabelsAndCounts = function () {
+    // adjust width of facet columns to fit their contents
+    function longer(a, b) {
+      return b.textContent.length - a.textContent.length;
+    }
+
+    $('ul.facet-values, ul.pivot-facet').each(function () {
+      var longest = $(this).find('span.facet-count').sort(longer)[0];
+
+      if (longest && longest.textContent) {
+        var width = longest.textContent.length + 1 + 'ch';
+        $(this).find('.facet-count').first().width(width);
+      }
+    });
+  };
+
+  Blacklight.onLoad(function () {
+    Blacklight.doResizeFacetLabelsAndCounts();
+  });
+})(jQuery);
 //= require blacklight/core
-//= require blacklight/autofocus
-//= require blacklight/bookmark_toggle
-//= require blacklight/modal
-//= require blacklight/search_context
-//= require blacklight/collapsable
-//= require blacklight/facet_load
-//= require blacklight/autocomplete
-//
-//Bootstrap JS for providing collapsable tablet/mobile menu/alert boxes
-//= require bootstrap/util
-//= require bootstrap/collapse
-// Required for dropdown
-//= require popper
-//= require bootstrap/dropdown
-//= require bootstrap/alert
-//= require bootstrap/modal
-
-// Twitter Typeahead for autocomplete
-//= require twitter/typeahead
-
-/* Blacklight has a Javascript setup meant to support local disabling, 
-  modification, and use of Blacklight behaviors. 
-  
-  There is a global Blacklight object, available to your local JS. 
-  
-  Individual logic to apply JS behaviors to particular elements is 
-  stored in functions on that Blacklight object. 
-  
-  The actual behaviors themselves are implemented as JQuery plugins, 
-  JQuery-UI widgets (a special kind of JQuery plugin), or in some cases
-  just as logic in the Blacklight global object. 
-  
-  All of these things can be modified by your local JS code -- these functions
-  are all set up on js load, and only called on document ready, so do your
-  modifications just on js load, and they'll be made by the time document ready
-  comes along. 
-  
-  Examples, in your application's own JS:
-        
-    Turn off adding of behavior to facet 'more' links, using a no-op function:
-    
-        Blacklight.do_more_facets_behavior = function() {};
-        
-    Change the implementation of facet 'more' link behavior to use entirely
-    different JS. 
-    
-        Blacklight.do_more_facets_behavior = function() {
-          $(Blacklight.do_more_facets_behavior.selector).each(function() {
-            //my own thing!
-          });
-        };
+
+/*
+  The blacklight modal plugin can display some interactions inside a Bootstrap
+  modal window, including some multi-page interactions.
+
+  It supports unobtrusive Javascript, where a link or form that would have caused
+  a new page load is changed to display it's results inside a modal dialog,
+  by this plugin.  The plugin assumes there is a Bootstrap modal div
+  on the page with id #blacklight-modal to use as the modal -- the standard Blacklight
+  layout provides this.
+
+  To make a link or form have their results display inside a modal, add
+  `data-blacklight-modal="trigger"` to the link or form. (Note, form itself not submit input)
+  With Rails link_to helper, you'd do that like:
+
+      link_to something, link, data: { blacklight_modal: "trigger" }
+
+  The results of the link href or form submit will be displayed inside
+  a modal -- they should include the proper HTML markup for a bootstrap modal's
+  contents. Also, you ordinarily won't want the Rails template with wrapping
+  navigational elements to be used.  The Rails controller could suppress
+  the layout when a JS AJAX request is detected, OR the response
+  can include a `<div data-blacklight-modal="container">` -- only the contents
+  of the container will be placed inside the modal, the rest of the
+  page will be ignored.
+
+  If you'd like to have a link or button that closes the modal,
+  you can just add a `data-dismiss="modal"` to the link,
+  standard Bootstrap convention. But you can also have
+  an href on this link for non-JS contexts, we'll make sure
+  inside the modal it closes the modal and the link is NOT followed.
+
+  Link or forms inside the modal will ordinarily cause page loads
+  when they are triggered. However, if you'd like their results
+  to stay within the modal, just add `data-blacklight-modal="preserve"`
+  to the link or form.
+
+  Here's an example of what might be returned, demonstrating most of the devices available:
+
+    <div data-blacklight-modal="container">
+      <div class="modal-header">
+        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
+        <h3 class="modal-title">Request Placed</h3>
+      </div>
+
+      <div class="modal-body">
+        <p>Some message</p>
+        <%= link_to "This result will still be within modal", some_link, data: { blacklight: "preserve" } %>
+      </div>
+
+
+      <div class="modal-footer">
+        <%= link_to "Close the modal", request_done_path, class: "submit button dialog-close", data: { dismiss: "modal" } %>
+      </div>
+    </div>
+
+
+  One additional feature. If the content returned from the AJAX modal load
+  has an element with `data-blacklight-modal=close`, that will trigger the modal
+  to be closed. And if this element includes a node with class "flash_messages",
+  the flash-messages node will be added to the main page inside #main-flahses.
+
+  == Events
+
+  We'll send out an event 'loaded.blacklight.blacklight-modal' with the #blacklight-modal
+  dialog as the target, right after content is loaded into the modal but before
+  it is shown (if not already a shown modal).  In an event handler, you can
+  inspect loaded content by looking inside $(this).  If you call event.preventDefault(),
+  we won't 'show' the dialog (although it may already have been shown, you may want to
+  $(this).modal("hide") if you want to ensure hidden/closed.
+
+  The data-blacklight-modal=close behavior is implemented with this event, see for example.
 */
 
-$('.no-js').removeClass('no-js').addClass('js');
+// We keep all our data in Blacklight.modal object.
+// Create lazily if someone else created first.
+if (Blacklight.modal === undefined) {
+  Blacklight.modal = {};
+}
+
+// a Bootstrap modal div that should be already on the page hidden
+Blacklight.modal.modalSelector = "#blacklight-modal";
+
+// Trigger selectors identify forms or hyperlinks that should open
+// inside a modal dialog.
+Blacklight.modal.triggerLinkSelector = "a[data-blacklight-modal~=trigger]";
+Blacklight.modal.triggerFormSelector = "form[data-blacklight-modal~=trigger]";
+
+// preserve selectors identify forms or hyperlinks that, if activated already
+// inside a modal dialog, should have destinations remain inside the modal -- but
+// won't trigger a modal if not already in one.
+//
+// No need to repeat selectors from trigger selectors, those will already
+// be preserved. MUST be manually prefixed with the modal selector,
+// so they only apply to things inside a modal.
+Blacklight.modal.preserveLinkSelector = Blacklight.modal.modalSelector + ' a[data-blacklight-modal~=preserve]';
+Blacklight.modal.preserveFormSelector = Blacklight.modal.modalSelector + ' form[data-blacklight-modal~=preserve]';
+
+Blacklight.modal.containerSelector = "[data-blacklight-modal~=container]";
+
+Blacklight.modal.modalCloseSelector = "[data-blacklight-modal~=close]";
+
+// Called on fatal failure of ajax load, function returns content
+// to show to user in modal.  Right now called only for extreme
+// network errors.
+Blacklight.modal.onFailure = function (data) {
+  var contents = "<div class='modal-header'>" + "<div class='modal-title'>Network Error</div>" + '<button type="button" class="blacklight-modal-close close" data-dismiss="modal" aria-label="Close">' + '  <span aria-hidden="true">&times;</span>' + '</button>';
+  $(Blacklight.modal.modalSelector).find('.modal-content').html(contents);
+  $(Blacklight.modal.modalSelector).modal('show');
+};
+
+Blacklight.modal.receiveAjax = function (contents) {
+  // does it have a data- selector for container?
+  // important we don't execute script tags, we shouldn't.
+  // code modelled off of JQuery ajax.load. https://github.com/jquery/jquery/blob/master/src/ajax/load.js?source=c#L62
+  var container = $("<div>").append(jQuery.parseHTML(contents)).find(Blacklight.modal.containerSelector).first();
+  if (container.length !== 0) {
+    contents = container.html();
+  }
+
+  $(Blacklight.modal.modalSelector).find('.modal-content').html(contents);
+
+  // send custom event with the modal dialog div as the target
+  var e = $.Event('loaded.blacklight.blacklight-modal');
+  $(Blacklight.modal.modalSelector).trigger(e);
+  // if they did preventDefault, don't show the dialog
+  if (e.isDefaultPrevented()) return;
+
+  $(Blacklight.modal.modalSelector).modal('show');
+};
+
+Blacklight.modal.modalAjaxLinkClick = function (e) {
+  e.preventDefault();
+
+  $.ajax({
+    url: $(this).attr('href')
+  }).fail(Blacklight.modal.onFailure).done(Blacklight.modal.receiveAjax);
+};
+
+Blacklight.modal.modalAjaxFormSubmit = function (e) {
+  e.preventDefault();
+
+  $.ajax({
+    url: $(this).attr('action'),
+    data: $(this).serialize(),
+    type: $(this).attr('method') // POST
+  }).fail(Blacklight.modal.onFailure).done(Blacklight.modal.receiveAjax);
+};
+
+Blacklight.modal.setup_modal = function () {
+  // Event indicating blacklight is setting up a modal link,
+  // you can catch it and call e.preventDefault() to abort
+  // setup.
+  var e = $.Event('setup.blacklight.blacklight-modal');
+  $("body").trigger(e);
+  if (e.isDefaultPrevented()) return;
+
+  // Register both trigger and preserve selectors in ONE event handler, combining
+  // into one selector with a comma, so if something matches BOTH selectors, it
+  // still only gets the event handler called once.
+  $("body").on("click", Blacklight.modal.triggerLinkSelector + ", " + Blacklight.modal.preserveLinkSelector, Blacklight.modal.modalAjaxLinkClick);
+  $("body").on("submit", Blacklight.modal.triggerFormSelector + ", " + Blacklight.modal.preserveFormSelector, Blacklight.modal.modalAjaxFormSubmit);
+
+  // Catch our own custom loaded event to implement data-blacklight-modal=closed
+  $("body").on("loaded.blacklight.blacklight-modal", Blacklight.modal.check_close_modal);
+
+  // we support doing data-dismiss=modal on a <a> with a href for non-ajax
+  // use, we need to suppress following the a's href that's there for
+  // non-JS contexts.
+  $("body ").on("click", Blacklight.modal.modalSelector + " a[data-dismiss~=modal]", function (e) {
+    e.preventDefault();
+  });
+};
+
+// A function used as an event handler on loaded.blacklight.blacklight-modal
+// to catch contained data-blacklight-modal=closed directions
+Blacklight.modal.check_close_modal = function (event) {
+  if ($(event.target).find(Blacklight.modal.modalCloseSelector).length) {
+    modal_flashes = $(this).find('.flash_messages');
+
+    $(event.target).modal("hide");
+    event.preventDefault();
+
+    main_flashes = $('#main-flashes');
+    main_flashes.append(modal_flashes);
+    modal_flashes.fadeIn(500);
+  }
+};
+
+Blacklight.onLoad(function () {
+  Blacklight.modal.setup_modal();
+});
+//= require blacklight/core
+(function ($) {
+  Blacklight.do_search_context_behavior = function () {
+    $('a[data-context-href]').on('click.search-context', Blacklight.handleSearchContextMethod);
+  };
+
+  // this is the $.rails.handleMethod with a couple adjustments, described inline:
+  // first, we're attaching this directly to the event handler, so we can check for meta-keys
+  Blacklight.handleSearchContextMethod = function (event) {
+    var link = $(this);
+
+    // instead of using the normal href, we need to use the context href instead
+    var href = link.data('context-href'),
+        method = 'post',
+        target = link.attr('target'),
+        csrfToken = $('meta[name=csrf-token]').attr('content'),
+        csrfParam = $('meta[name=csrf-param]').attr('content'),
+        form = $('<form method="post" action="' + href + '"></form>'),
+        metadataInput = '<input name="_method" value="' + method + '" type="hidden" />',
+        redirectHref = '<input name="redirect" value="' + link.attr('href') + '" type="hidden" />';
+
+    // check for meta keys.. if set, we should open in a new tab
+    if (event.metaKey || event.ctrlKey) {
+      target = '_blank';
+    }
+
+    if (csrfParam !== undefined && csrfToken !== undefined) {
+      metadataInput += '<input name="' + csrfParam + '" value="' + csrfToken + '" type="hidden" />';
+    }
+
+    if (target) {
+      form.attr('target', target);
+    }
+
+    form.hide().append(metadataInput).append(redirectHref).appendTo('body');
+    form.submit();
+
+    return false;
+  };
+
+  Blacklight.onLoad(function () {
+    Blacklight.do_search_context_behavior();
+  });
+})(jQuery);
+
diff --git a/app/assets/javascripts/blacklight/autocomplete.js b/app/javascript/blacklight/autocomplete.js
similarity index 92%
rename from app/assets/javascripts/blacklight/autocomplete.js
rename to app/javascript/blacklight/autocomplete.js
index 8e7a5a4627..755b8c2bd3 100644
--- a/app/assets/javascripts/blacklight/autocomplete.js
+++ b/app/javascript/blacklight/autocomplete.js
@@ -1,4 +1,5 @@
 /*global Bloodhound */
+import Bloodhound from 'typeahead.js/dist/bloodhound.js'
 
 Blacklight.onLoad(function() {
   'use strict';
@@ -9,7 +10,7 @@ Blacklight.onLoad(function() {
       return;
     }
     var suggestUrl = $el.data().autocompletePath;
-    
+
     var terms = new Bloodhound({
       datumTokenizer: Bloodhound.tokenizers.obj.whitespace('value'),
       queryTokenizer: Bloodhound.tokenizers.whitespace,
@@ -18,7 +19,7 @@ Blacklight.onLoad(function() {
         wildcard: '%QUERY'
       }
     });
-    
+
     terms.initialize();
 
     $el.typeahead({
diff --git a/app/assets/javascripts/blacklight/autofocus.js b/app/javascript/blacklight/autofocus.js
similarity index 100%
rename from app/assets/javascripts/blacklight/autofocus.js
rename to app/javascript/blacklight/autofocus.js
diff --git a/app/assets/javascripts/blacklight/bookmark_toggle.js b/app/javascript/blacklight/bookmark_toggle.js
similarity index 82%
rename from app/assets/javascripts/blacklight/bookmark_toggle.js
rename to app/javascript/blacklight/bookmark_toggle.js
index 3d10724ae7..efadd4a30e 100644
--- a/app/assets/javascripts/blacklight/bookmark_toggle.js
+++ b/app/javascript/blacklight/bookmark_toggle.js
@@ -1,5 +1,3 @@
-//= require blacklight/core
-//= require blacklight/checkbox_submit
 (function($) {
 //change form submit toggle to checkbox
     Blacklight.do_bookmark_toggle_behavior = function() {
@@ -13,11 +11,11 @@
          }
       });
     };
-    Blacklight.do_bookmark_toggle_behavior.selector = "form.bookmark-toggle"; 
+    Blacklight.do_bookmark_toggle_behavior.selector = "form.bookmark-toggle";
 
 Blacklight.onLoad(function() {
-  Blacklight.do_bookmark_toggle_behavior();  
+  Blacklight.do_bookmark_toggle_behavior();
 });
-  
+
 
 })(jQuery);
diff --git a/app/assets/javascripts/blacklight/checkbox_submit.js b/app/javascript/blacklight/checkbox_submit.js
similarity index 100%
rename from app/assets/javascripts/blacklight/checkbox_submit.js
rename to app/javascript/blacklight/checkbox_submit.js
diff --git a/app/assets/javascripts/blacklight/collapsable.js b/app/javascript/blacklight/collapsable.js
similarity index 100%
rename from app/assets/javascripts/blacklight/collapsable.js
rename to app/javascript/blacklight/collapsable.js
diff --git a/app/assets/javascripts/blacklight/core.js b/app/javascript/blacklight/core.js
similarity index 90%
rename from app/assets/javascripts/blacklight/core.js
rename to app/javascript/blacklight/core.js
index 166237b3ed..82a970501f 100644
--- a/app/assets/javascripts/blacklight/core.js
+++ b/app/javascript/blacklight/core.js
@@ -31,9 +31,9 @@ Blacklight = function() {
 }();
 
 // turbolinks triggers page:load events on page transition
-// If app isn't using turbolinks, this event will never be triggered, no prob. 
+// If app isn't using turbolinks, this event will never be triggered, no prob.
 $(document).on(Blacklight.listeners(), function() {
-  Blacklight.activate();  
+  Blacklight.activate();
 });
 
-
+$('.no-js').removeClass('no-js').addClass('js');
diff --git a/app/assets/javascripts/blacklight/facet_load.js b/app/javascript/blacklight/facet_load.js
similarity index 100%
rename from app/assets/javascripts/blacklight/facet_load.js
rename to app/javascript/blacklight/facet_load.js
diff --git a/app/assets/javascripts/blacklight/modal.js b/app/javascript/blacklight/modal.js
similarity index 100%
rename from app/assets/javascripts/blacklight/modal.js
rename to app/javascript/blacklight/modal.js
diff --git a/app/assets/javascripts/blacklight/search_context.js b/app/javascript/blacklight/search_context.js
similarity index 100%
rename from app/assets/javascripts/blacklight/search_context.js
rename to app/javascript/blacklight/search_context.js
diff --git a/blacklight.gemspec b/blacklight.gemspec
index 748d742b0d..a142bc8ffd 100644
--- a/blacklight.gemspec
+++ b/blacklight.gemspec
@@ -30,10 +30,7 @@ Gem::Specification.new do |s|
   s.add_dependency "jbuilder"
   s.add_dependency "nokogiri",  "~>1.6"     # XML Parser
   s.add_dependency "kaminari", ">= 0.15" # the pagination (page 1,2,3, etc..) of our search results
-  s.add_dependency "bootstrap", "~> 4.0"
-  s.add_dependency "popper_js"
   s.add_dependency "deprecation"
-  s.add_dependency "twitter-typeahead-rails", '0.11.1.pre.corejavascript'
 
   s.add_development_dependency "rsolr", ">= 1.0.6", "< 3"  # Library for interacting with rSolr.
   s.add_development_dependency "solr_wrapper"
diff --git a/lib/blacklight/engine.rb b/lib/blacklight/engine.rb
index 25a29ad04e..09740413f2 100644
--- a/lib/blacklight/engine.rb
+++ b/lib/blacklight/engine.rb
@@ -3,9 +3,6 @@ module Blacklight
   class Engine < Rails::Engine
     engine_name "blacklight"
 
-    require 'bootstrap'
-    require 'twitter-typeahead-rails'
-
     # BlacklightHelper is needed by all helpers, so we inject it
     # into action view base here.
     initializer 'blacklight.helpers' do
diff --git a/lib/generators/blacklight/assets_generator.rb b/lib/generators/blacklight/assets_generator.rb
index ecb0048a54..1786b9b260 100644
--- a/lib/generators/blacklight/assets_generator.rb
+++ b/lib/generators/blacklight/assets_generator.rb
@@ -10,8 +10,21 @@ def assets
 
       contents = "\n//\n// Required by Blacklight\n"
       contents += "//= require jquery\n" if rails_5_1?
+      contents += "//= require popper\n"
+      contents += "// Twitter Typeahead for autocomplete\n"
+      contents += "//= require twitter/typeahead\n"
+      contents += "//= require bootstrap\n"
+
+      # TODO: can we have the application use YARN/Webpacker and `yarn add blacklight-frontend`?
       contents += "//= require blacklight/blacklight\n"
 
+      # That should pull blacklight + bootstrap stuff into the bundle
+      # contents += "//= require bootstrap/util\n"
+      # contents += "//= require bootstrap/collapse\n"
+      # contents += "//= require bootstrap/dropdown\n"
+      # contents += "//= require bootstrap/alert\n"
+      # contents += "//= require bootstrap/modal\n"
+
       marker = if turbolinks?
                  '//= require turbolinks'
                elsif rails_5_1?
diff --git a/lib/generators/blacklight/install_generator.rb b/lib/generators/blacklight/install_generator.rb
index 828178ff28..7e8efb0e19 100644
--- a/lib/generators/blacklight/install_generator.rb
+++ b/lib/generators/blacklight/install_generator.rb
@@ -30,6 +30,13 @@ def add_solr_wrapper
       generate 'blacklight:solr' unless options[:'skip-solr']
     end
 
+    # This could be skipped if you want to use webpacker
+    def add_javascript_dependencies
+      gem 'bootstrap', '~> 4.0'
+      gem 'popper_js'
+      gem 'twitter-typeahead-rails', '0.11.1.pre.corejavascript'
+    end
+
     def bundle_install
       Bundler.with_clean_env do
         run "bundle install"
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000000..5e389bb019
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,2057 @@
+{
+  "name": "blacklight-frontend",
+  "version": "7.0.0-alpha.1",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "ansi-regex": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "dev": true
+    },
+    "ansi-styles": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
+      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+      "dev": true
+    },
+    "anymatch": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-1.3.2.tgz",
+      "integrity": "sha512-0XNayC8lTHQ2OI8aljNCN3sSx6hsr/1+rlcDAotXJR7C1oZZHCNsfpbKwMjRA3Uqb5tF1Rae2oloTr4xpq+WjA==",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "micromatch": "2.3.11",
+        "normalize-path": "2.1.1"
+      }
+    },
+    "arr-diff": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
+      "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "arr-flatten": "1.1.0"
+      }
+    },
+    "arr-flatten": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
+      "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
+      "dev": true,
+      "optional": true
+    },
+    "array-unique": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.2.1.tgz",
+      "integrity": "sha1-odl8yvy8JiXMcPrc6zalDFiwGlM=",
+      "dev": true,
+      "optional": true
+    },
+    "async-each": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.1.tgz",
+      "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0=",
+      "dev": true,
+      "optional": true
+    },
+    "babel-cli": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-cli/-/babel-cli-6.26.0.tgz",
+      "integrity": "sha1-UCq1SHTX24itALiHoGODzgPQAvE=",
+      "dev": true,
+      "requires": {
+        "babel-core": "6.26.0",
+        "babel-polyfill": "6.26.0",
+        "babel-register": "6.26.0",
+        "babel-runtime": "6.26.0",
+        "chokidar": "1.7.0",
+        "commander": "2.11.0",
+        "convert-source-map": "1.5.0",
+        "fs-readdir-recursive": "1.0.0",
+        "glob": "7.1.2",
+        "lodash": "4.17.4",
+        "output-file-sync": "1.1.2",
+        "path-is-absolute": "1.0.1",
+        "slash": "1.0.0",
+        "source-map": "0.5.7",
+        "v8flags": "2.1.1"
+      }
+    },
+    "babel-code-frame": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
+      "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
+      "dev": true,
+      "requires": {
+        "chalk": "1.1.3",
+        "esutils": "2.0.2",
+        "js-tokens": "3.0.2"
+      }
+    },
+    "babel-core": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-core/-/babel-core-6.26.0.tgz",
+      "integrity": "sha1-rzL3izGm/O8RnIew/Y2XU/A6C7g=",
+      "dev": true,
+      "requires": {
+        "babel-code-frame": "6.26.0",
+        "babel-generator": "6.26.0",
+        "babel-helpers": "6.24.1",
+        "babel-messages": "6.23.0",
+        "babel-register": "6.26.0",
+        "babel-runtime": "6.26.0",
+        "babel-template": "6.26.0",
+        "babel-traverse": "6.26.0",
+        "babel-types": "6.26.0",
+        "babylon": "6.18.0",
+        "convert-source-map": "1.5.0",
+        "debug": "2.6.8",
+        "json5": "0.5.1",
+        "lodash": "4.17.4",
+        "minimatch": "3.0.4",
+        "path-is-absolute": "1.0.1",
+        "private": "0.1.7",
+        "slash": "1.0.0",
+        "source-map": "0.5.7"
+      }
+    },
+    "babel-generator": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-generator/-/babel-generator-6.26.0.tgz",
+      "integrity": "sha1-rBriAHC3n248odMmlhMFN3TyDcU=",
+      "dev": true,
+      "requires": {
+        "babel-messages": "6.23.0",
+        "babel-runtime": "6.26.0",
+        "babel-types": "6.26.0",
+        "detect-indent": "4.0.0",
+        "jsesc": "1.3.0",
+        "lodash": "4.17.4",
+        "source-map": "0.5.7",
+        "trim-right": "1.0.1"
+      }
+    },
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+      "version": "6.24.1",
+      "resolved": "https://registry.npmjs.org/babel-helpers/-/babel-helpers-6.24.1.tgz",
+      "integrity": "sha1-NHHenK7DiOXIUOWX5Yom3fN2ArI=",
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+      }
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+      }
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+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-polyfill/-/babel-polyfill-6.26.0.tgz",
+      "integrity": "sha1-N5k3q8Z9eJWXCtxiHyhM2WbPIVM=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "6.26.0",
+        "core-js": "2.5.0",
+        "regenerator-runtime": "0.10.5"
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+        "regenerator-runtime": {
+          "version": "0.10.5",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.10.5.tgz",
+          "integrity": "sha1-M2w+/BIgrc7dosn6tntaeVWjNlg=",
+          "dev": true
+        }
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+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-register/-/babel-register-6.26.0.tgz",
+      "integrity": "sha1-btAhFz4vy0htestFxgCahW9kcHE=",
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+        "babel-core": "6.26.0",
+        "babel-runtime": "6.26.0",
+        "core-js": "2.5.0",
+        "home-or-tmp": "2.0.0",
+        "lodash": "4.17.4",
+        "mkdirp": "0.5.1",
+        "source-map-support": "0.4.16"
+      }
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+      }
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+      "integrity": "sha1-RqnL1+3MYsjlwGTi0tjQ9ANXZu4=",
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+        "debug": "2.6.8",
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+        "invariant": "2.2.2",
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+        "lodash": "4.17.4",
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+      "integrity": "sha512-gulJE5dGFo6Q61V/whS6VM4WIyrlydXfCgkE+Gxe5hjrJ8rXLLZlALq7zq2RPhOc45PSwQpJkrTnc2KgD6cvmA=="
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+      "version": "1.1.8",
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+      "integrity": "sha1-wHshHHyVLsH479Uad+8NHTmQopI=",
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+      "requires": {
+        "balanced-match": "1.0.0",
+        "concat-map": "0.0.1"
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+      "resolved": "https://registry.npmjs.org/braces/-/braces-1.8.5.tgz",
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+        "preserve": "0.2.0",
+        "repeat-element": "1.1.2"
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+      "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
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+        "escape-string-regexp": "1.0.5",
+        "has-ansi": "2.0.0",
+        "strip-ansi": "3.0.1",
+        "supports-color": "2.0.0"
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+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-1.7.0.tgz",
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+        "inherits": "2.0.3",
+        "is-binary-path": "1.0.1",
+        "is-glob": "2.0.1",
+        "path-is-absolute": "1.0.1",
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+      "dev": true
+    },
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diff --git a/package.json b/package.json
new file mode 100644
index 0000000000..0b028690e6
--- /dev/null
+++ b/package.json
@@ -0,0 +1,28 @@
+{
+  "name": "blacklight-frontend",
+  "version": "7.0.0-alpha.1",
+  "description": "[![Build Status](https://travis-ci.org/projectblacklight/blacklight.png?branch=master)](https://travis-ci.org/projectblacklight/blacklight) [![Gem Version](https://badge.fury.io/rb/blacklight.png)](http://badge.fury.io/rb/blacklight) [![Coverage Status](https://coveralls.io/repos/github/projectblacklight/blacklight/badge.svg?branch=master)](https://coveralls.io/github/projectblacklight/blacklight?branch=master)",
+  "main": "app/assets/javascripts/blacklight",
+  "scripts": {
+    "js-compile-bundle": "shx cat app/javascript/blacklight/core.js app/javascript/blacklight/autocomplete.js app/javascript/blacklight/bookmark_toggle.js app/javascript/blacklight/checkbox_submit.js app/javascript/blacklight/collapsable.js app/javascript/blacklight/facet_load.js app/javascript/blacklight/modal.js app/javascript/blacklight/search_context.js | shx sed \"s/^(import|export).*//\" | babel --filename app/javascript/blacklight/blacklight.js > app/assets/javascripts/blacklight/blacklight.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/projectblacklight/blacklight.git"
+  },
+  "author": "",
+  "license": "Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/projectblacklight/blacklight/issues"
+  },
+  "homepage": "https://github.com/projectblacklight/blacklight#readme",
+  "devDependencies": {
+    "babel-cli": "^6.26.0",
+    "shx": "^0.2.2"
+  },
+  "dependencies": {
+    "bootstrap": "4.0.0",
+    "jquery": "^3.2.1",
+    "typeahead.js": "^0.11.1"
+  }
+}