diff --git a/package.json b/package.json
index a5b0d418ac..f4283135fe 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "stop-only": "npx stop-only --skip .cy,.publish,.projects,node_modules,dist,dist-test,fixtures,lib,bower_components,src,__snapshots__ --exclude e2e.ts,cypress-tests.ts,unwritten.spec.ts",
     "stop-only-all": "yarn stop-only --folder packages",
     "pretest": "yarn ensure-deps",
-    "test": "yarn lerna exec yarn test --scope cypress --scope \"'@packages/{electron,extension,https-proxy,launcher,net-stubbing,network,proxy,rewriter,runner,socket}'\"",
+    "test": "yarn lerna exec yarn test --scope cypress --scope \"'@packages/{electron,extension,https-proxy,launcher,net-stubbing,network,proxy,rewriter,runner,runner-shared,socket}'\"",
     "test-debug": "lerna exec yarn test-debug --ignore \"'@packages/{desktop-gui,driver,root,static,web-config}'\"",
     "pretest-e2e": "yarn ensure-deps",
     "test-e2e": "lerna exec yarn test-e2e --ignore \"'@packages/{desktop-gui,driver,root,static,web-config}'\"",
diff --git a/packages/driver/index.d.ts b/packages/driver/index.d.ts
index b814a4d928..8bb8dc0232 100644
--- a/packages/driver/index.d.ts
+++ b/packages/driver/index.d.ts
@@ -2,4 +2,5 @@
 /// <reference path="../ts/index.d.ts" />
 export const $Cypress: Cypress.Cypress
 
-export default $Cypress
+export const $: typeof JQuery
+export default $Cypress
\ No newline at end of file
diff --git a/packages/runner-ct/cypress/component/ResizeReporter.spec.tsx b/packages/runner-ct/cypress/component/ResizeReporter.spec.tsx
index c7c993ea15..cd8227c2b4 100644
--- a/packages/runner-ct/cypress/component/ResizeReporter.spec.tsx
+++ b/packages/runner-ct/cypress/component/ResizeReporter.spec.tsx
@@ -3,7 +3,7 @@ import React from 'react'
 import { mount } from '@cypress/react'
 import RunnerCt from '../../src/app/RunnerCt'
 import '@packages/runner/src/main.scss'
-import eventManager from '../../src/lib/event-manager'
+import { eventManager } from '@packages/runner-shared'
 import { testSpecFile } from '../fixtures/testSpecFile'
 import { makeState, fakeConfig, getPort } from './utils'
 
diff --git a/packages/runner-ct/cypress/component/ResizeSpecList.spec.tsx b/packages/runner-ct/cypress/component/ResizeSpecList.spec.tsx
index a1881ab530..8a37873500 100644
--- a/packages/runner-ct/cypress/component/ResizeSpecList.spec.tsx
+++ b/packages/runner-ct/cypress/component/ResizeSpecList.spec.tsx
@@ -3,7 +3,7 @@ import React from 'react'
 import { mount } from '@cypress/react'
 import RunnerCt from '../../src/app/RunnerCt'
 import '@packages/runner/src/main.scss'
-import eventManager from '../../src/lib/event-manager'
+import { eventManager } from '@packages/runner-shared'
 import { testSpecFile } from '../fixtures/testSpecFile'
 import { makeState, fakeConfig, getPort } from './utils'
 
diff --git a/packages/runner-ct/cypress/component/ScriptError.spec.tsx b/packages/runner-ct/cypress/component/ScriptError.spec.tsx
index 4b9e1826de..d7b5623608 100644
--- a/packages/runner-ct/cypress/component/ScriptError.spec.tsx
+++ b/packages/runner-ct/cypress/component/ScriptError.spec.tsx
@@ -2,7 +2,7 @@
 
 import React from 'react'
 import { mount } from '@cypress/react'
-import ScriptError from '../../src/errors/script-error'
+import { ScriptError } from '@packages/runner-shared'
 
 describe('ScriptError', () => {
   it('renders an error', () => {
diff --git a/packages/runner-ct/src/app/Plugins.tsx b/packages/runner-ct/src/app/Plugins.tsx
index 7644b97db4..983be61883 100644
--- a/packages/runner-ct/src/app/Plugins.tsx
+++ b/packages/runner-ct/src/app/Plugins.tsx
@@ -4,7 +4,7 @@ import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
 
 import State from '../lib/state'
 import { Hidden } from '../lib/Hidden'
-import { namedObserver } from '../lib/mobx'
+import { namedObserver } from '@packages/runner-shared'
 import { PLUGIN_BAR_HEIGHT } from './RunnerCt'
 
 import styles from './RunnerCt.module.scss'
diff --git a/packages/runner-ct/src/app/ReporterContainer.tsx b/packages/runner-ct/src/app/ReporterContainer.tsx
index 5a657101f0..4fbe03a8aa 100644
--- a/packages/runner-ct/src/app/ReporterContainer.tsx
+++ b/packages/runner-ct/src/app/ReporterContainer.tsx
@@ -3,10 +3,8 @@ import cs from 'classnames'
 import { ReporterHeaderProps } from '@packages/reporter/src/header/header'
 import { Reporter } from '@packages/reporter/src/main'
 
-import errorMessages from '../errors/error-messages'
-import EventManager from '../lib/event-manager'
+import { errorMessages, namedObserver, eventManager as EventManager } from '@packages/runner-shared'
 import State from '../lib/state'
-import { namedObserver } from '../lib/mobx'
 import { ReporterHeader } from './ReporterHeader'
 import { NoSpec } from './NoSpec'
 
@@ -15,7 +13,10 @@ import styles from './RunnerCt.module.scss'
 interface ReporterContainerProps {
   state: State
   eventManager: typeof EventManager
-  config: Cypress.RuntimeConfigOptions
+  config: {
+    configFile: string
+    [key: string]: unknown
+  }
 }
 
 export const ReporterContainer = namedObserver('ReporterContainer',
diff --git a/packages/runner-ct/src/app/ReporterHeader.tsx b/packages/runner-ct/src/app/ReporterHeader.tsx
index 7ec83090a4..ba4cd687ee 100644
--- a/packages/runner-ct/src/app/ReporterHeader.tsx
+++ b/packages/runner-ct/src/app/ReporterHeader.tsx
@@ -3,7 +3,7 @@ import { ReporterHeaderProps } from '@packages/reporter/src/header/header'
 import Stats from '@packages/reporter/src/header/stats'
 import Controls from '@packages/reporter/src/header/controls'
 import { StatsStore } from '@packages/reporter/src/header/stats-store'
-import { namedObserver } from '../lib/mobx'
+import { namedObserver } from '@packages/runner-shared'
 import styles from './ReporterHeader.module.scss'
 
 export const EmptyReporterHeader: React.FC = () => {
diff --git a/packages/runner-ct/src/app/RunnerCt.tsx b/packages/runner-ct/src/app/RunnerCt.tsx
index b41039b224..ee501e1a0c 100644
--- a/packages/runner-ct/src/app/RunnerCt.tsx
+++ b/packages/runner-ct/src/app/RunnerCt.tsx
@@ -14,13 +14,12 @@ library.add(fas)
 library.add(fab)
 
 import State from '../lib/state'
-import EventManager from '../lib/event-manager'
+import { eventManager as EventManager, namedObserver } from '@packages/runner-shared'
 import { useGlobalHotKey } from '../lib/useHotKey'
 import { animationFrameDebounce } from '../lib/debounce'
 import { LeftNavMenu } from './LeftNavMenu'
 import { SpecContent } from './SpecContent'
 import { hideIfScreenshotting, hideSpecsListIfNecessary } from '../lib/hideGuard'
-import { namedObserver } from '../lib/mobx'
 import { SpecList } from './SpecList/SpecList'
 import { NoSpec } from './NoSpec'
 
diff --git a/packages/runner-ct/src/app/SpecContent.tsx b/packages/runner-ct/src/app/SpecContent.tsx
index 21f69cc8a6..da9628220f 100644
--- a/packages/runner-ct/src/app/SpecContent.tsx
+++ b/packages/runner-ct/src/app/SpecContent.tsx
@@ -1,27 +1,27 @@
 import cs from 'classnames'
 import * as React from 'react'
 import SplitPane from 'react-split-pane'
+import { Message, namedObserver, eventManager as EventManager, Header } from '@packages/runner-shared'
 
-import Header from '../header/header'
 import { Iframes } from '../iframe/iframes'
 import { animationFrameDebounce } from '../lib/debounce'
-import { Message } from '../message/message'
 import { KeyboardHelper } from './KeyboardHelper'
 import { NoSpec } from './NoSpec'
 import { Plugins } from './Plugins'
 import { ReporterContainer } from './ReporterContainer'
 import { PLUGIN_BAR_HEIGHT } from './RunnerCt'
 import State from '../lib/state'
-import EventManager from '../lib/event-manager'
 import { hideIfScreenshotting, hideReporterIfNecessary } from '../lib/hideGuard'
 
 import styles from './RunnerCt.module.scss'
-import { namedObserver } from '../lib/mobx'
 
 interface SpecContentProps {
   state: State
   eventManager: typeof EventManager
-  config: Cypress.RuntimeConfigOptions
+  config: {
+    configFile: string
+    [key: string]: unknown
+  }
 }
 
 interface SpecContentWrapperProps {
@@ -62,7 +62,7 @@ export const SpecContent = namedObserver('SpecContent', (props: SpecContentProps
           },
         )}
         >
-          <Header {...props} />
+          <Header {...props} runner='ct' />
           {props.state.spec
             ? <Iframes {...props} />
             : (
@@ -70,7 +70,19 @@ export const SpecContent = namedObserver('SpecContent', (props: SpecContentProps
                 <KeyboardHelper />
               </NoSpec>
             )}
-          <Message state={props.state} />
+          <Message
+            state={{
+              messageTitle: props.state.messageTitle,
+              messageControls: props.state.messageControls,
+              messageDescription: props.state.messageDescription,
+              messageType: props.state.messageType,
+              messageStyles: {
+                state: props.state.messageStyles.state,
+                styles: props.state.messageStyles.styles,
+                messageType: props.state.messageType,
+              },
+            }}
+          />
         </div>
         <Plugins
           key="plugins"
diff --git a/packages/runner-ct/src/app/useScreenshotHandler.tsx b/packages/runner-ct/src/app/useScreenshotHandler.tsx
index 96a988ec2a..a4a3357ef2 100644
--- a/packages/runner-ct/src/app/useScreenshotHandler.tsx
+++ b/packages/runner-ct/src/app/useScreenshotHandler.tsx
@@ -1,6 +1,6 @@
 import * as React from 'react'
 import { runInAction } from 'mobx'
-import EventManager from '../lib/event-manager'
+import { eventManager as EventManager } from '@packages/runner-shared'
 import State from '../lib/state'
 
 /**
diff --git a/packages/runner-ct/src/errors/error-messages.js b/packages/runner-ct/src/errors/error-messages.js
deleted file mode 100644
index b255c6c1fd..0000000000
--- a/packages/runner-ct/src/errors/error-messages.js
+++ /dev/null
@@ -1,24 +0,0 @@
-export default {
-  reporterError (err, specPath) {
-    if (!err) return null
-
-    switch (err.type) {
-      case 'BUNDLE_ERROR':
-        return {
-          title: 'Oops...we found an error preparing this test file:',
-          link: 'https://on.cypress.io/we-found-an-error-preparing-your-test-file',
-          callout: specPath,
-          message: `
-This occurred while Cypress was compiling and bundling your test code. This is usually caused by:
-
-* A missing file or dependency
-* A syntax error in the file or one of its dependencies
-
-Fix the error in your code and re-run your tests.
-          `,
-        }
-      default:
-        return null
-    }
-  },
-}
diff --git a/packages/runner-ct/src/header/header.tsx b/packages/runner-ct/src/header/header.tsx
deleted file mode 100644
index efa6b70356..0000000000
--- a/packages/runner-ct/src/header/header.tsx
+++ /dev/null
@@ -1,111 +0,0 @@
-import cs from 'classnames'
-
-import { action, observable } from 'mobx'
-import { observer } from 'mobx-react'
-import React, { Component } from 'react'
-import Tooltip from '@cypress/react-tooltip'
-import State from '../lib/state'
-
-import { configFileFormatted } from '../lib/config-file-formatted'
-import SelectorPlayground from '../selector-playground/selector-playground'
-import selectorPlaygroundModel from '../selector-playground/selector-playground-model'
-
-interface HeaderProps {
-  state: State
-  config: Cypress.RuntimeConfigOptions
-}
-
-@observer
-export default class Header extends Component<HeaderProps> {
-  headerRef = React.createRef()
-
-  @observable showingViewportMenu = false
-
-  render () {
-    const { state, config } = this.props
-
-    return (
-      <header
-        ref={this.headerRef}
-        className={cs({
-          'showing-selector-playground': selectorPlaygroundModel.isOpen,
-          'display-none': state.screenshotting,
-        })}
-      >
-        <div className='sel-url-wrap'>
-          <Tooltip
-            title='Open Selector Playground'
-            visible={selectorPlaygroundModel.isOpen ? false : null}
-            wrapperClassName='selector-playground-toggle-tooltip-wrapper'
-            className='cy-tooltip'
-          >
-            <button
-              aria-label='Open Selector Playground'
-              className='header-button selector-playground-toggle'
-              disabled={state.isLoading || state.isRunning}
-              onClick={this._togglePlaygroundOpen}
-            >
-              <i aria-hidden="true" className='fas fa-crosshairs' />
-            </button>
-          </Tooltip>
-        </div>
-        <ul className='menu'>
-          <li className={cs('viewport-info', { 'menu-open': this.showingViewportMenu })}>
-            <button onClick={this._toggleViewportMenu}>
-              {`${state.viewportWidth} `}
-              <span className='the-x'>x</span>
-              {` ${state.viewportHeight}`}
-              <i className='fas fa-fw fa-info-circle'></i>
-            </button>
-            <div className='popup-menu viewport-menu'>
-              {/* eslint-disable react/jsx-one-expression-per-line */}
-              <p>The <strong>viewport</strong> determines the width and height of your application. By default the viewport will be
-                <strong>{state.defaults.viewportWidth}px</strong> by
-                <strong>{state.defaults.viewportHeight}px</strong> unless specified by a
-                <code>cy.viewport</code> command.
-              </p>
-              <p>Additionally you can override the default viewport dimensions by specifying these values in your {configFileFormatted(config.configFile)}.</p>
-              <pre>{/* eslint-disable indent */}
-                {`{
-  "viewportWidth": ${state.defaults.viewportWidth},
-  "viewportHeight": ${state.defaults.viewportHeight}
-}`}
-              </pre>
-              {/* eslint-enable indent */}
-              <p>
-                <a href='https://on.cypress.io/viewport' target='_blank' rel='noreferrer'>
-                  <i className='fas fa-info-circle'></i>
-                  Read more about viewport here.
-                </a>
-              </p>
-              {/* eslint-enable react/jsx-one-expression-per-line */}
-            </div>
-          </li>
-        </ul>
-        <SelectorPlayground model={selectorPlaygroundModel} />
-      </header>
-    )
-  }
-
-  componentDidMount () {
-    this.previousSelectorPlaygroundOpen = selectorPlaygroundModel.isOpen
-  }
-
-  componentDidUpdate () {
-    if (selectorPlaygroundModel.isOpen !== this.previousSelectorPlaygroundOpen) {
-      this.props.state.updateWindowDimensions({
-        headerHeight: this.headerRef.current.offsetHeight,
-      })
-
-      this.previousSelectorPlaygroundOpen = selectorPlaygroundModel.isOpen
-    }
-  }
-
-  _togglePlaygroundOpen = () => {
-    selectorPlaygroundModel.toggleOpen()
-  }
-
-  @action _toggleViewportMenu = () => {
-    this.showingViewportMenu = !this.showingViewportMenu
-  }
-}
diff --git a/packages/runner-ct/src/iframe/aut-iframe.js b/packages/runner-ct/src/iframe/aut-iframe.js
deleted file mode 100644
index 1b93b86861..0000000000
--- a/packages/runner-ct/src/iframe/aut-iframe.js
+++ /dev/null
@@ -1,399 +0,0 @@
-import _ from 'lodash'
-import { $ } from '@packages/driver'
-
-import dom from '../lib/dom'
-import logger from '../lib/logger'
-import eventManager from '../lib/event-manager'
-import visitFailure from './visit-failure'
-import blankContents from './blank-contents'
-import selectorPlaygroundModel from '../selector-playground/selector-playground-model'
-
-export default class AutIframe {
-  constructor (config) {
-    this.config = config
-    this.debouncedToggleSelectorPlayground = _.debounce(this.toggleSelectorPlayground, 300)
-  }
-
-  create () {
-    this.$iframe = $('<iframe>', {
-      id: `Your App: '${this.config.projectName}'`,
-      class: 'aut-iframe',
-    })
-
-    return this.$iframe
-  }
-
-  showBlankContents () {
-    this._showContents(blankContents())
-  }
-
-  showVisitFailure = (props) => {
-    this._showContents(visitFailure(props))
-  }
-
-  _showContents (contents) {
-    this._body().html(contents)
-  }
-
-  _contents () {
-    return this.$iframe && this.$iframe.contents()
-  }
-
-  _window () {
-    return this.$iframe.prop('contentWindow')
-  }
-
-  _document () {
-    return this.$iframe.prop('contentDocument')
-  }
-
-  _body () {
-    return this._contents() && this._contents().find('body')
-  }
-
-  detachDom = () => {
-    const Cypress = eventManager.getCypress()
-
-    if (!Cypress) return
-
-    return Cypress.cy.detachDom(this._contents())
-  }
-
-  restoreDom = (snapshot) => {
-    const Cypress = eventManager.getCypress()
-    const { headStyles, bodyStyles } = Cypress ? Cypress.cy.getStyles(snapshot) : {}
-    const { body, htmlAttrs } = snapshot
-    const contents = this._contents()
-    const $html = contents.find('html')
-
-    this._replaceHtmlAttrs($html, htmlAttrs)
-    this._replaceHeadStyles(headStyles)
-
-    // remove the old body and replace with restored one
-    this._body().remove()
-    this._insertBodyStyles(body.get(), bodyStyles)
-    $html.append(body.get())
-
-    this.debouncedToggleSelectorPlayground(selectorPlaygroundModel.isEnabled)
-  }
-
-  _replaceHtmlAttrs ($html, htmlAttrs) {
-    let oldAttrs = {}
-
-    // remove all attributes
-    if ($html[0]) {
-      oldAttrs = _.map($html[0].attributes, (attr) => {
-        return attr.name
-      })
-    }
-
-    _.each(oldAttrs, (attr) => {
-      $html.removeAttr(attr)
-    })
-
-    // set the ones specified
-    _.each(htmlAttrs, (value, key) => {
-      $html.attr(key, value)
-    })
-  }
-
-  _replaceHeadStyles (styles = []) {
-    const $head = this._contents().find('head')
-    const existingStyles = $head.find('link[rel="stylesheet"],style')
-
-    _.each(styles, (style, index) => {
-      if (style.href) {
-        // make a best effort at not disturbing <link> stylesheets
-        // if possible by checking to see if the existing head has a
-        // stylesheet with the same href in the same position
-        this._replaceLink($head, existingStyles[index], style)
-      } else {
-        // for <style> tags, just replace them completely since the contents
-        // could be different and it shouldn't cause a FOUC since
-        // there's no http request involved
-        this._replaceStyle($head, existingStyles[index], style)
-      }
-    })
-
-    // remove any extra stylesheets
-    if (existingStyles.length > styles.length) {
-      existingStyles.slice(styles.length).remove()
-    }
-  }
-
-  _replaceLink ($head, existingStyle, style) {
-    const linkTag = this._linkTag(style)
-
-    if (!existingStyle) {
-      // no existing style at this index, so no more styles at all in
-      // the head, so just append it
-      $head.append(linkTag)
-
-      return
-    }
-
-    if (existingStyle.href !== style.href) {
-      $(existingStyle).replaceWith(linkTag)
-    }
-  }
-
-  _replaceStyle ($head, existingStyle, style) {
-    const styleTag = this._styleTag(style)
-
-    if (existingStyle) {
-      $(existingStyle).replaceWith(styleTag)
-    } else {
-      // no existing style at this index, so no more styles at all in
-      // the head, so just append it
-      $head.append(styleTag)
-    }
-  }
-
-  _insertBodyStyles ($body, styles = []) {
-    _.each(styles, (style) => {
-      $body.append(style.href ? this._linkTag(style) : this._styleTag(style))
-    })
-  }
-
-  _linkTag (style) {
-    return `<link rel="stylesheet" href="${style.href}" />`
-  }
-
-  _styleTag (style) {
-    return `<style>${style}</style>`
-  }
-
-  highlightEl = ({ body }, { $el, coords, highlightAttr, scrollBy }) => {
-    this.removeHighlights()
-
-    if (body) {
-      $el = body.get().find(`[${highlightAttr}]`)
-    } else {
-      body = { get: () => this._body() }
-    }
-
-    // normalize
-    const el = $el.get(0)
-    const $body = body.get()
-
-    body = $body.get(0)
-
-    // scroll the top of the element into view
-    if (el) {
-      el.scrollIntoView()
-      // if we have a scrollBy on our command
-      // then we need to additional scroll the window
-      // by these offsets
-      if (scrollBy) {
-        this.$iframe.prop('contentWindow').scrollBy(scrollBy.x, scrollBy.y)
-      }
-    }
-
-    $el.each((__, element) => {
-      const $_el = $(element)
-
-      // bail if our el no longer exists in the parent body
-      if (!$.contains(body, element)) return
-
-      // switch to using outerWidth + outerHeight
-      // because we want to highlight our element even
-      // if it only has margin and zero content height / width
-      const dimensions = dom.getOuterSize($_el)
-
-      // dont show anything if our element displaces nothing
-      if (dimensions.width === 0 || dimensions.height === 0 || $_el.css('display') === 'none') {
-        return
-      }
-
-      dom.addElementBoxModelLayers($_el, $body).attr('data-highlight-el', true)
-    })
-
-    if (coords) {
-      requestAnimationFrame(() => {
-        dom.addHitBoxLayer(coords, $body).attr('data-highlight-hitbox', true)
-      })
-    }
-  }
-
-  removeHighlights = () => {
-    this._contents() && this._contents().find('.__cypress-highlight').remove()
-  }
-
-  toggleSelectorPlayground = (isEnabled) => {
-    const $body = this._body()
-
-    if (!$body) return
-
-    if (isEnabled) {
-      $body.on('mouseenter', this._resetShowHighlight)
-      $body.on('mousemove', this._onSelectorMouseMove)
-      $body.on('mouseleave', this._clearHighlight)
-    } else {
-      $body.off('mouseenter', this._resetShowHighlight)
-      $body.off('mousemove', this._onSelectorMouseMove)
-      $body.off('mouseleave', this._clearHighlight)
-      if (this._highlightedEl) {
-        this._clearHighlight()
-      }
-    }
-  }
-
-  _resetShowHighlight = () => {
-    selectorPlaygroundModel.setShowingHighlight(false)
-  }
-
-  _onSelectorMouseMove = (e) => {
-    const $body = this._body()
-
-    if (!$body) return
-
-    let el = e.target
-    let $el = $(el)
-
-    const $ancestorHighlight = $el.closest('.__cypress-selector-playground')
-
-    if ($ancestorHighlight.length) {
-      $el = $ancestorHighlight
-    }
-
-    if ($ancestorHighlight.length || $el.hasClass('__cypress-selector-playground')) {
-      const $highlight = $el
-
-      $highlight.css('display', 'none')
-      el = this._document().elementFromPoint(e.clientX, e.clientY)
-      $el = $(el)
-      $highlight.css('display', 'block')
-    }
-
-    if (this._highlightedEl === el) return
-
-    this._highlightedEl = el
-
-    const Cypress = eventManager.getCypress()
-
-    const selector = Cypress.SelectorPlayground.getSelector($el)
-
-    dom.addOrUpdateSelectorPlaygroundHighlight({
-      $el,
-      selector,
-      $body,
-      showTooltip: true,
-      onClick: () => {
-        selectorPlaygroundModel.setNumElements(1)
-        selectorPlaygroundModel.resetMethod()
-        selectorPlaygroundModel.setSelector(selector)
-      },
-    })
-  }
-
-  _clearHighlight = () => {
-    const $body = this._body()
-
-    if (!$body) return
-
-    dom.addOrUpdateSelectorPlaygroundHighlight({ $el: null, $body })
-    if (this._highlightedEl) {
-      this._highlightedEl = null
-    }
-  }
-
-  toggleSelectorHighlight (isShowingHighlight) {
-    if (!isShowingHighlight) {
-      this._clearHighlight()
-
-      return
-    }
-
-    const Cypress = eventManager.getCypress()
-
-    const $el = this.getElements(Cypress.dom)
-
-    selectorPlaygroundModel.setValidity(!!$el)
-
-    if ($el) {
-      selectorPlaygroundModel.setNumElements($el.length)
-
-      if ($el.length) {
-        dom.scrollIntoView(this._window(), $el[0])
-      }
-    }
-
-    dom.addOrUpdateSelectorPlaygroundHighlight({
-      $el: $el && $el.length ? $el : null,
-      selector: selectorPlaygroundModel.selector,
-      $body: this._body(),
-      showTooltip: false,
-    })
-  }
-
-  getElements (cypressDom) {
-    const { selector, method } = selectorPlaygroundModel
-    const $contents = this._contents()
-
-    if (!$contents || !selector) return
-
-    return dom.getElementsForSelector({
-      method,
-      selector,
-      cypressDom,
-      $root: $contents,
-    })
-  }
-
-  printSelectorElementsToConsole () {
-    logger.clearLog()
-
-    const Cypress = eventManager.getCypress()
-
-    const $el = this.getElements(Cypress.dom)
-
-    const command = `cy.${selectorPlaygroundModel.method}('${selectorPlaygroundModel.selector}')`
-
-    if (!$el) {
-      return logger.logFormatted({
-        Command: command,
-        Yielded: 'Nothing',
-      })
-    }
-
-    logger.logFormatted({
-      Command: command,
-      Elements: $el.length,
-      Yielded: Cypress.dom.getElements($el),
-    })
-  }
-
-  beforeScreenshot = (config) => {
-    // could fail if iframe is cross-origin, so fail gracefully
-    try {
-      if (config.disableTimersAndAnimations) {
-        dom.addCssAnimationDisabler(this._body())
-      }
-
-      _.each(config.blackout, (selector) => {
-        dom.addBlackout(this._body(), selector)
-      })
-    } catch (err) {
-      /* eslint-disable no-console */
-      console.error('Failed to modify app dom:')
-      console.error(err)
-      /* eslint-disable no-console */
-    }
-  }
-
-  afterScreenshot = (config) => {
-    // could fail if iframe is cross-origin, so fail gracefully
-    try {
-      if (config.disableTimersAndAnimations) {
-        dom.removeCssAnimationDisabler(this._body())
-      }
-
-      dom.removeBlackouts(this._body())
-    } catch (err) {
-      /* eslint-disable no-console */
-      console.error('Failed to modify app dom:')
-      console.error(err)
-      /* eslint-disable no-console */
-    }
-  }
-}
diff --git a/packages/runner-ct/src/iframe/iframe-model.js b/packages/runner-ct/src/iframe/iframe-model.js
deleted file mode 100644
index c97f05a880..0000000000
--- a/packages/runner-ct/src/iframe/iframe-model.js
+++ /dev/null
@@ -1,232 +0,0 @@
-import _ from 'lodash'
-import { action } from 'mobx'
-
-import eventManager from '../lib/event-manager'
-import selectorPlaygroundModel from '../selector-playground/selector-playground-model'
-
-export default class IframeModel {
-  constructor ({ state, detachDom, restoreDom, highlightEl, snapshotControls }) {
-    this.state = state
-    this.detachDom = detachDom
-    this.restoreDom = restoreDom
-    this.highlightEl = highlightEl
-    this.snapshotControls = snapshotControls
-
-    this._reset()
-  }
-
-  listen () {
-    eventManager.on('run:start', action('run:start', this._beforeRun))
-    eventManager.on('run:end', action('run:end', this._afterRun))
-
-    eventManager.on('viewport:changed', action('viewport:changed', this._updateViewport))
-    eventManager.on('config', action('config', (config) => {
-      this._updateViewport(_.map(config, 'viewportHeight', 'viewportWidth'))
-    }))
-
-    eventManager.on('url:changed', action('url:changed', this._updateUrl))
-    eventManager.on('page:loading', action('page:loading', this._updateLoadingUrl))
-
-    eventManager.on('show:snapshot', action('show:snapshot', this._setSnapshots))
-    eventManager.on('hide:snapshot', action('hide:snapshot', this._clearSnapshots))
-
-    eventManager.on('pin:snapshot', action('pin:snapshot', this._pinSnapshot))
-    eventManager.on('unpin:snapshot', action('unpin:snapshot', this._unpinSnapshot))
-  }
-
-  _beforeRun = () => {
-    this.state.isLoading = false
-    this.state.isRunning = true
-    this.state.resetUrl()
-    selectorPlaygroundModel.setEnabled(false)
-    this._reset()
-    this._clearMessage()
-  }
-
-  _afterRun = () => {
-    this.state.isRunning = false
-  }
-
-  _updateViewport = ({ viewportWidth, viewportHeight }, cb) => {
-    this.state.updateAutViewportDimensions({ viewportWidth, viewportHeight })
-
-    if (cb) {
-      this.state.setCallbackAfterUpdate(cb)
-    }
-  }
-
-  _updateUrl = (url) => {
-    this.state.url = url
-  }
-
-  _updateLoadingUrl = (isLoadingUrl) => {
-    this.state.isLoadingUrl = isLoadingUrl
-  }
-
-  _clearMessage = () => {
-    this.state.clearMessage()
-  }
-
-  _setSnapshots = (snapshotProps) => {
-    if (this.isSnapshotPinned) return
-
-    if (this.state.isRunning) {
-      return this._testsRunningError()
-    }
-
-    const { snapshots } = snapshotProps
-
-    if (!snapshots || !snapshots.length) {
-      this._clearSnapshots()
-      this._setMissingSnapshotMessage()
-
-      return
-    }
-
-    this.state.highlightUrl = true
-
-    if (!this.originalState) {
-      this._storeOriginalState()
-    }
-
-    this.detachedId = snapshotProps.id
-
-    this._updateViewport(snapshotProps)
-    this._updateUrl(snapshotProps.url)
-
-    clearInterval(this.intervalId)
-
-    const revert = action('revert:snapshot', this._showSnapshot)
-
-    if (snapshots.length > 1) {
-      let i = 0
-
-      this.intervalId = setInterval(() => {
-        if (this.isSnapshotPinned) return
-
-        i += 1
-        if (!snapshots[i]) {
-          i = 0
-        }
-
-        revert(snapshots[i], snapshotProps)
-      }, 800)
-    }
-
-    revert(snapshots[0], snapshotProps)
-  }
-
-  _showSnapshot = (snapshot, snapshotProps) => {
-    this.state.messageTitle = 'DOM Snapshot'
-    this.state.messageDescription = snapshot.name
-    this.state.messageType = ''
-
-    this._restoreDom(snapshot, snapshotProps)
-  }
-
-  _restoreDom (snapshot, snapshotProps) {
-    this.restoreDom(snapshot)
-
-    if (snapshotProps.$el) {
-      this.highlightEl(snapshot, snapshotProps)
-    }
-  }
-
-  _clearSnapshots = () => {
-    if (this.isSnapshotPinned) return
-
-    clearInterval(this.intervalId)
-
-    this.state.highlightUrl = false
-
-    if (!this.originalState || !this.originalState.body) {
-      return this._clearMessage()
-    }
-
-    const previousDetachedId = this.detachedId
-
-    // process on next tick so we don't restore the dom if we're
-    // about to receive another 'show:snapshot' event, else that would
-    // be a huge waste
-    setTimeout(action('clear:snapshots:next:tick', () => {
-      // we want to only restore the dom if we haven't received
-      // another snapshot by the time this function runs
-      if (previousDetachedId !== this.detachedId) return
-
-      this._updateViewport(this.originalState)
-      this._updateUrl(this.originalState.url)
-      this.restoreDom(this.originalState.snapshot)
-      this._clearMessage()
-
-      this.originalState = null
-      this.detachedId = null
-    }))
-  }
-
-  _pinSnapshot = (snapshotProps) => {
-    const { snapshots } = snapshotProps
-
-    if (!snapshots || !snapshots.length) {
-      eventManager.snapshotUnpinned()
-      this._setMissingSnapshotMessage()
-
-      return
-    }
-
-    clearInterval(this.intervalId)
-
-    this.isSnapshotPinned = true
-
-    this.state.snapshot.showingHighlights = true
-    this.state.snapshot.stateIndex = 0
-
-    this.state.messageTitle = 'DOM Snapshot'
-    this.state.messageDescription = 'pinned'
-    this.state.messageType = 'info'
-    this.state.messageControls = this.snapshotControls(snapshotProps)
-
-    this._restoreDom(snapshots[0], snapshotProps)
-  }
-
-  _setMissingSnapshotMessage () {
-    this.state.messageTitle = 'The snapshot is missing. Displaying current state of the DOM.'
-    this.state.messageDescription = ''
-    this.state.messageType = 'warning'
-  }
-
-  _unpinSnapshot = () => {
-    this.isSnapshotPinned = false
-    this.state.messageTitle = 'DOM Snapshot'
-    this.state.messageDescription = ''
-    this.state.messageControls = null
-  }
-
-  _testsRunningError () {
-    this.state.messageTitle = 'Cannot show Snapshot while tests are running'
-    this.state.messageType = 'warning'
-  }
-
-  _storeOriginalState () {
-    const finalSnapshot = this.detachDom()
-
-    if (!finalSnapshot) return
-
-    const { body, htmlAttrs } = finalSnapshot
-
-    this.originalState = {
-      body,
-      htmlAttrs,
-      snapshot: finalSnapshot,
-      url: this.state.url,
-      viewportWidth: this.state.viewportWidth,
-      viewportHeight: this.state.viewportHeight,
-    }
-  }
-
-  _reset () {
-    this.detachedId = null
-    this.intervalId = null
-    this.originalState = null
-    this.isSnapshotPinned = false
-  }
-}
diff --git a/packages/runner-ct/src/iframe/iframes.tsx b/packages/runner-ct/src/iframe/iframes.tsx
index e45e9fdfa1..da57bc9966 100644
--- a/packages/runner-ct/src/iframe/iframes.tsx
+++ b/packages/runner-ct/src/iframe/iframes.tsx
@@ -2,16 +2,18 @@ import cs from 'classnames'
 import { action, when, autorun } from 'mobx'
 import React, { useRef, useEffect } from 'react'
 import { default as $Cypress } from '@packages/driver'
+import {
+  SnapshotControls,
+  ScriptError,
+  namedObserver,
+  IframeModel,
+  selectorPlaygroundModel,
+  AutIframe,
+  eventManager as EventManager,
+} from '@packages/runner-shared'
 
 import State from '../../src/lib/state'
-import AutIframe from './aut-iframe'
-import { ScriptError } from '../errors/script-error'
-import SnapshotControls from './snapshot-controls'
-import IframeModel from './iframe-model'
-import selectorPlaygroundModel from '../selector-playground/selector-playground-model'
 import styles from '../app/RunnerCt.module.scss'
-import eventManager from '../lib/event-manager'
-import { namedObserver } from '../lib/mobx'
 import './iframes.scss'
 
 export function getSpecUrl ({ namespace, spec }, prefix = '') {
@@ -20,7 +22,7 @@ export function getSpecUrl ({ namespace, spec }, prefix = '') {
 
 interface IFramesProps {
   state: State
-  eventManager: typeof eventManager
+  eventManager: typeof EventManager
   config: Cypress.RuntimeConfigOptions
 }
 
@@ -168,7 +170,7 @@ export const Iframes = namedObserver('Iframes', ({
     state.callbackAfterUpdate?.()
   })
 
-  const { viewportHeight, viewportWidth, scriptError, scale, screenshotting } = state
+  const { height, width, scriptError, scale, screenshotting } = state
 
   return (
     <div
@@ -188,8 +190,8 @@ export const Iframes = namedObserver('Iframes', ({
           })
         }
         style={{
-          height: viewportHeight,
-          width: viewportWidth,
+          height,
+          width,
           transform: `scale(${screenshotting ? 1 : scale})`,
         }}
       />
diff --git a/packages/runner-ct/src/iframe/snapshot-controls.jsx b/packages/runner-ct/src/iframe/snapshot-controls.jsx
deleted file mode 100644
index 0f7b5f16d3..0000000000
--- a/packages/runner-ct/src/iframe/snapshot-controls.jsx
+++ /dev/null
@@ -1,78 +0,0 @@
-import cs from 'classnames'
-import _ from 'lodash'
-import { action } from 'mobx'
-import { observer } from 'mobx-react'
-import React, { Component } from 'react'
-import Tooltip from '@cypress/react-tooltip'
-
-@observer
-class SnapshotControls extends Component {
-  render () {
-    return (
-      <span
-        className={cs('snapshot-controls', {
-          'showing-selection': this.props.state.snapshot.showingHighlights,
-        })}
-      >
-        {this._selectionToggle()}
-        {this._states()}
-        <Tooltip title='Unpin' className='cy-tooltip'>
-          <button className='unpin' onClick={this._unpin}>
-            <i className='fas fa-times' />
-          </button>
-        </Tooltip>
-      </span>
-    )
-  }
-
-  _selectionToggle () {
-    if (!this.props.snapshotProps.$el) return null
-
-    const showingHighlights = this.props.state.snapshot.showingHighlights
-
-    return (
-      <Tooltip title={`${showingHighlights ? 'Hide' : 'Show'} Highlights`} className='cy-tooltip'>
-        <button className='toggle-selection' onClick={this._toggleHighlights}>
-          <i className='far fa-object-group' />
-        </button>
-      </Tooltip>
-    )
-  }
-
-  _states () {
-    const { snapshots } = this.props.snapshotProps
-
-    if (snapshots.length < 2) return null
-
-    return (
-      <span className='snapshot-state-picker'>
-        {_.map(snapshots, (snapshot, index) => (
-          <button
-            key={snapshot.name ?? index}
-            className={cs({
-              'state-is-selected': this.props.state.snapshot.stateIndex === index,
-            })}
-            href="#"
-            onClick={this._changeState(index)}
-          >
-            {snapshot.name ?? index + 1}
-          </button>
-        ))}
-      </span>
-    )
-  }
-
-  _unpin = () => {
-    this.props.eventManager.snapshotUnpinned()
-  }
-
-  @action _toggleHighlights = () => {
-    this.props.onToggleHighlights(this.props.snapshotProps)
-  }
-
-  _changeState = (index) => action('change:snapshot:state', () => {
-    this.props.onStateChange(this.props.snapshotProps, index)
-  })
-}
-
-export default SnapshotControls
diff --git a/packages/runner-ct/src/lib/config-file-formatted.jsx b/packages/runner-ct/src/lib/config-file-formatted.jsx
deleted file mode 100644
index e16bc25ab8..0000000000
--- a/packages/runner-ct/src/lib/config-file-formatted.jsx
+++ /dev/null
@@ -1,33 +0,0 @@
-import React from 'react'
-import { isUndefined } from 'lodash'
-
-const configFileFormatted = (configFile) => {
-  if (configFile === false) {
-    return (
-      <>
-        {/* eslint-disable-next-line react/jsx-one-expression-per-line */ }
-        <code>cypress.json</code> file (currently disabled by <code>--config-file false</code>)
-      </>
-    )
-  }
-
-  if (isUndefined(configFile) || configFile === 'cypress.json') {
-    return (
-      <>
-        {/* eslint-disable-next-line react/jsx-one-expression-per-line */ }
-        <code>cypress.json</code> file
-      </>
-    )
-  }
-
-  return (
-    <>
-      {/* eslint-disable-next-line react/jsx-one-expression-per-line */ }
-      custom config file <code>{configFile}</code>
-    </>
-  )
-}
-
-export {
-  configFileFormatted,
-}
diff --git a/packages/runner-ct/src/lib/dom.js b/packages/runner-ct/src/lib/dom.js
deleted file mode 100644
index 0fc9547ffa..0000000000
--- a/packages/runner-ct/src/lib/dom.js
+++ /dev/null
@@ -1,457 +0,0 @@
-import _ from 'lodash'
-
-import { $ } from '@packages/driver'
-import selectorPlaygroundHighlight from '@packages/runner/src/selector-playground/highlight'
-// The '!' tells webpack to disable normal loaders, and keep loaders with `enforce: 'pre'` and `enforce: 'post'`
-// This disables the CSSExtractWebpackPlugin and allows us to get the CSS as a raw string instead of saving it to a separate file.
-import selectorPlaygroundCSS from '!@packages/runner/src/selector-playground/selector-playground.scss'
-
-const styles = (styleString) => {
-  return styleString.replace(/\s*\n\s*/g, '')
-}
-
-const resetStyles = `
-  border: none !important;
-  margin: 0 !important;
-  padding: 0 !important;
-`
-
-function addHitBoxLayer (coords, $body) {
-  $body = $body || $('body')
-
-  const height = 10
-  const width = 10
-
-  const dotHeight = 4
-  const dotWidth = 4
-
-  const top = coords.y - height / 2
-  const left = coords.x - width / 2
-
-  const dotTop = height / 2 - dotHeight / 2
-  const dotLeft = width / 2 - dotWidth / 2
-
-  const boxStyles = styles(`
-    ${resetStyles}
-    position: absolute;
-    top: ${top}px;
-    left: ${left}px;
-    width: ${width}px;
-    height: ${height}px;
-    background-color: red;
-    border-radius: 5px;
-    box-shadow: 0 0 5px #333;
-    z-index: 2147483647;
-  `)
-
-  const $box = $(`<div class="__cypress-highlight" style="${boxStyles}" />`)
-
-  const wrapper = $(`<div style="${styles(resetStyles)} position: relative" />`).appendTo($box)
-
-  const dotStyles = styles(`
-    ${resetStyles}
-    position: absolute;
-    top: ${dotTop}px;
-    left: ${dotLeft}px;
-    height: ${dotHeight}px;
-    width: ${dotWidth}px;
-    height: ${dotHeight}px;
-    background-color: pink;
-    border-radius: 5px;
-  `)
-
-  $(`<div style="${dotStyles}">`).appendTo(wrapper)
-
-  return $box.appendTo($body)
-}
-
-function addElementBoxModelLayers ($el, $body) {
-  $body = $body || $('body')
-
-  const dimensions = getElementDimensions($el)
-
-  const $container = $('<div class="__cypress-highlight">')
-  .css({
-    opacity: 0.7,
-    position: 'absolute',
-    zIndex: 2147483647,
-  })
-
-  const layers = {
-    Content: '#9FC4E7',
-    Padding: '#C1CD89',
-    Border: '#FCDB9A',
-    Margin: '#F9CC9D',
-  }
-
-  // create the margin / bottom / padding layers
-  _.each(layers, (color, attr) => {
-    let obj
-
-    switch (attr) {
-      case 'Content':
-        // rearrange the contents offset so
-        // its inside of our border + padding
-        obj = {
-          width: dimensions.width,
-          height: dimensions.height,
-          top: dimensions.offset.top + dimensions.borderTop + dimensions.paddingTop,
-          left: dimensions.offset.left + dimensions.borderLeft + dimensions.paddingLeft,
-        }
-
-        break
-      default:
-        obj = {
-          width: getDimensionsFor(dimensions, attr, 'width'),
-          height: getDimensionsFor(dimensions, attr, 'height'),
-          top: dimensions.offset.top,
-          left: dimensions.offset.left,
-        }
-    }
-
-    // if attr is margin then we need to additional
-    // subtract what the actual marginTop + marginLeft
-    // values are, since offset disregards margin completely
-    if (attr === 'Margin') {
-      obj.top -= dimensions.marginTop
-      obj.left -= dimensions.marginLeft
-    }
-
-    if (attr === 'Padding') {
-      obj.top += dimensions.borderTop
-      obj.left += dimensions.borderLeft
-    }
-
-    // bail if the dimensions of this layer match the previous one
-    // so we dont create unnecessary layers
-    if (dimensionsMatchPreviousLayer(obj, $container)) return
-
-    return createLayer($el, attr, color, $container, obj)
-  })
-
-  $container.appendTo($body)
-
-  $container.children().each((index, el) => {
-    const $el = $(el)
-    const top = $el.data('top')
-    const left = $el.data('left')
-
-    // dont ask... for some reason we
-    // have to run offset twice!
-    _.times(2, () => {
-      return $el.offset({ top, left })
-    })
-  })
-
-  return $container
-}
-
-function getOrCreateSelectorHelperDom ($body) {
-  let $container = $body.find('.__cypress-selector-playground')
-
-  if ($container.length) {
-    const shadowRoot = $container[0].shadowRoot
-
-    return {
-      $container,
-      shadowRoot,
-      $reactContainer: $(shadowRoot).find('.react-container'),
-    }
-  }
-
-  $container = $('<div />')
-  .addClass('__cypress-selector-playground')
-  .css({ position: 'static' })
-  .appendTo($body)
-
-  const shadowRoot = $container[0].attachShadow({ mode: 'open' })
-
-  const $reactContainer = $('<div />')
-  .addClass('react-container')
-  .appendTo(shadowRoot)
-
-  $('<style />', { html: selectorPlaygroundCSS.toString() }).prependTo(shadowRoot)
-
-  return { $container, shadowRoot, $reactContainer }
-}
-
-function addOrUpdateSelectorPlaygroundHighlight ({ $el, $body, selector, showTooltip, onClick }) {
-  const { $container, shadowRoot, $reactContainer } = getOrCreateSelectorHelperDom($body)
-
-  if (!$el) {
-    selectorPlaygroundHighlight.unmount($reactContainer[0])
-    $reactContainer.off('click')
-    $container.remove()
-
-    return
-  }
-
-  const borderSize = 2
-
-  const styles = $el.map((__, el) => {
-    const $el = $(el)
-    const offset = $el.offset()
-
-    return {
-      position: 'absolute',
-      margin: 0,
-      padding: 0,
-      width: $el.outerWidth(),
-      height: $el.outerHeight(),
-      top: offset.top - borderSize,
-      left: offset.left - borderSize,
-      transform: $el.css('transform'),
-      zIndex: getZIndex($el),
-    }
-  }).get()
-
-  if ($el.length === 1) {
-    $reactContainer
-    .off('click')
-    .on('click', onClick)
-  }
-
-  selectorPlaygroundHighlight.render($reactContainer[0], {
-    selector,
-    appendTo: shadowRoot,
-    showTooltip,
-    styles,
-  })
-}
-
-function createLayer ($el, attr, color, container, dimensions) {
-  const transform = $el.css('transform')
-
-  const css = {
-    transform,
-    width: dimensions.width,
-    height: dimensions.height,
-    position: 'absolute',
-    zIndex: getZIndex($el),
-    backgroundColor: color,
-  }
-
-  return $('<div>')
-  .css(css)
-  .attr('data-top', dimensions.top)
-  .attr('data-left', dimensions.left)
-  .attr('data-layer', attr)
-  .prependTo(container)
-}
-
-function dimensionsMatchPreviousLayer (obj, container) {
-  // since we're prepending to the container that
-  // means the previous layer is actually the first child element
-  const previousLayer = container.children().first().get(0)
-
-  // bail if there is no previous layer
-  if (!previousLayer) {
-    return
-  }
-
-  return obj.width === previousLayer.offsetWidth &&
-  obj.height === previousLayer.offsetHeight
-}
-
-function getDimensionsFor (dimensions, attr, dimension) {
-  return dimensions[`${dimension}With${attr}`]
-}
-
-function getZIndex (el) {
-  if (/^(auto|0)$/.test(el.css('zIndex'))) {
-    return 2147483647
-  }
-
-  return _.toNumber(el.css('zIndex'))
-}
-
-function getElementDimensions ($el) {
-  const el = $el.get(0)
-
-  const { offsetHeight, offsetWidth } = el
-
-  const box = {
-    offset: $el.offset(), // offset disregards margin but takes into account border + padding
-    // dont use jquery here for width/height because it uses getBoundingClientRect() which returns scaled values.
-    // TODO: switch back to using jquery when upgrading to jquery 3.4+
-    paddingTop: getPadding($el, 'top'),
-    paddingRight: getPadding($el, 'right'),
-    paddingBottom: getPadding($el, 'bottom'),
-    paddingLeft: getPadding($el, 'left'),
-    borderTop: getBorder($el, 'top'),
-    borderRight: getBorder($el, 'right'),
-    borderBottom: getBorder($el, 'bottom'),
-    borderLeft: getBorder($el, 'left'),
-    marginTop: getMargin($el, 'top'),
-    marginRight: getMargin($el, 'right'),
-    marginBottom: getMargin($el, 'bottom'),
-    marginLeft: getMargin($el, 'left'),
-  }
-
-  // NOTE: offsetWidth/height always give us content + padding + border, so subtract them
-  // to get the true "clientHeight" and "clientWidth".
-  // we CANNOT just use "clientHeight" and "clientWidth" because those always return 0
-  // for inline elements >_<
-  //
-  box.width = offsetWidth - (box.paddingLeft + box.paddingRight + box.borderLeft + box.borderRight)
-  box.height = offsetHeight - (box.paddingTop + box.paddingBottom + box.borderTop + box.borderBottom)
-
-  // innerHeight: Get the current computed height for the first
-  // element in the set of matched elements, including padding but not border.
-
-  // outerHeight: Get the current computed height for the first
-  // element in the set of matched elements, including padding, border,
-  // and optionally margin. Returns a number (without 'px') representation
-  // of the value or null if called on an empty set of elements.
-  box.heightWithPadding = box.height + box.paddingTop + box.paddingBottom
-
-  box.heightWithBorder = box.heightWithPadding + box.borderTop + box.borderBottom
-
-  box.heightWithMargin = box.heightWithBorder + box.marginTop + box.marginBottom
-
-  box.widthWithPadding = box.width + box.paddingLeft + box.paddingRight
-
-  box.widthWithBorder = box.widthWithPadding + box.borderLeft + box.borderRight
-
-  box.widthWithMargin = box.widthWithBorder + box.marginLeft + box.marginRight
-
-  return box
-}
-
-function getNumAttrValue ($el, attr) {
-  // nuke anything thats not a number or a negative symbol
-  const num = _.toNumber($el.css(attr).replace(/[^0-9\.-]+/, ''))
-
-  if (!_.isFinite(num)) {
-    throw new Error('Element attr did not return a valid number')
-  }
-
-  return num
-}
-
-function getPadding ($el, dir) {
-  return getNumAttrValue($el, `padding-${dir}`)
-}
-
-function getBorder ($el, dir) {
-  return getNumAttrValue($el, `border-${dir}-width`)
-}
-
-function getMargin ($el, dir) {
-  return getNumAttrValue($el, `margin-${dir}`)
-}
-
-function getOuterSize ($el) {
-  return {
-    width: $el.outerWidth(true),
-    height: $el.outerHeight(true),
-  }
-}
-
-function isInViewport (win, el) {
-  let rect = el.getBoundingClientRect()
-
-  return (
-    rect.top >= 0 &&
-    rect.left >= 0 &&
-    rect.bottom <= win.innerHeight &&
-    rect.right <= win.innerWidth
-  )
-}
-
-function scrollIntoView (win, el) {
-  if (!el || isInViewport(win, el)) return
-
-  el.scrollIntoView()
-}
-
-const sizzleRe = /sizzle/i
-
-function getElementsForSelector ({ $root, selector, method, cypressDom }) {
-  let $el = null
-
-  try {
-    if (method === 'contains') {
-      $el = $root.find(cypressDom.getContainsSelector(selector))
-      if ($el.length) {
-        $el = cypressDom.getFirstDeepestElement($el)
-      }
-    } else {
-      $el = $root.find(selector)
-    }
-  } catch (err) {
-    // if not a sizzle error, ignore it and let $el be null
-    if (!sizzleRe.test(err.stack)) throw err
-  }
-
-  return $el
-}
-
-function addCssAnimationDisabler ($body) {
-  $(`
-    <style id="__cypress-animation-disabler">
-      *, *:before, *:after {
-        transition-property: none !important;
-        animation: none !important;
-      }
-    </style>
-  `).appendTo($body)
-}
-
-function removeCssAnimationDisabler ($body) {
-  $body.find('#__cypress-animation-disabler').remove()
-}
-
-function addBlackoutForElement ($body, $el) {
-  const dimensions = getElementDimensions($el)
-  const width = dimensions.widthWithBorder
-  const height = dimensions.heightWithBorder
-  const top = dimensions.offset.top
-  const left = dimensions.offset.left
-
-  const style = styles(`
-    ${resetStyles}
-    position: absolute;
-    top: ${top}px;
-    left: ${left}px;
-    width: ${width}px;
-    height: ${height}px;
-    background-color: black;
-    z-index: 2147483647;
-  `)
-
-  $(`<div class="__cypress-blackout" style="${style}">`).appendTo($body)
-}
-
-function addBlackout ($body, selector) {
-  let $el
-
-  try {
-    $el = $body.find(selector)
-    if (!$el.length) return
-  } catch (err) {
-    // if it's an invalid selector, just ignore it
-    return
-  }
-
-  $el.each(function () {
-    addBlackoutForElement($body, $(this))
-  })
-}
-
-function removeBlackouts ($body) {
-  $body.find('.__cypress-blackout').remove()
-}
-
-export default {
-  addBlackout,
-  removeBlackouts,
-  addElementBoxModelLayers,
-  addHitBoxLayer,
-  addOrUpdateSelectorPlaygroundHighlight,
-  addCssAnimationDisabler,
-  removeCssAnimationDisabler,
-  getElementsForSelector,
-  getOuterSize,
-  scrollIntoView,
-}
diff --git a/packages/runner-ct/src/lib/event-manager.js b/packages/runner-ct/src/lib/event-manager.js
deleted file mode 100644
index 5ce3cc772b..0000000000
--- a/packages/runner-ct/src/lib/event-manager.js
+++ /dev/null
@@ -1,491 +0,0 @@
-import _ from 'lodash'
-import { EventEmitter } from 'events'
-import Promise from 'bluebird'
-import { action } from 'mobx'
-
-import { client } from '@packages/socket'
-
-import automation from './automation'
-import logger from './logger'
-
-import $Cypress, { $ } from '@packages/driver'
-
-const ws = client.connect({
-  path: '/__socket.io',
-  transports: ['websocket'],
-})
-
-ws.on('connect', () => {
-  ws.emit('runner:connected')
-})
-
-const driverToReporterEvents = 'paused before:firefox:force:gc after:firefox:force:gc'.split(' ')
-const driverToLocalAndReporterEvents = 'run:start run:end'.split(' ')
-const driverToSocketEvents = 'backend:request automation:request mocha recorder:frame'.split(' ')
-const driverTestEvents = 'test:before:run:async test:after:run'.split(' ')
-const driverToLocalEvents = 'viewport:changed config stop url:changed page:loading visit:failed'.split(' ')
-const socketRerunEvents = 'runner:restart watched:file:changed'.split(' ')
-const socketToDriverEvents = 'net:event script:error'.split(' ')
-
-const localBus = new EventEmitter()
-const reporterBus = new EventEmitter()
-
-// NOTE: this is exposed for testing, ideally we should only expose this if a test flag is set
-window.runnerWs = ws
-
-// NOTE: this is for testing Cypress-in-Cypress, window.Cypress is undefined here
-// unless Cypress has been loaded into the AUT frame
-if (window.Cypress) {
-  window.eventManager = { reporterBus, localBus }
-}
-
-/**
- * @type {Cypress.Cypress}
- */
-let Cypress
-
-const eventManager = {
-  reporterBus,
-
-  getCypress () {
-    return Cypress
-  },
-
-  addGlobalListeners (state, connectionInfo) {
-    const rerun = () => {
-      if (!this) {
-        // if the tests have been reloaded
-        // then nothing to rerun
-        return
-      }
-
-      return this._reRun(state)
-    }
-
-    ws.emit('is:automation:client:connected', connectionInfo, action('automationEnsured', (isConnected) => {
-      state.automation = isConnected ? automation.CONNECTED : automation.MISSING
-      ws.on('automation:disconnected', action('automationDisconnected', () => {
-        state.automation = automation.DISCONNECTED
-      }))
-    }))
-
-    ws.on('change:to:url', (url) => {
-      window.location.href = url
-    })
-
-    ws.on('automation:push:message', (msg, data = {}) => {
-      if (!Cypress) return
-
-      switch (msg) {
-        case 'change:cookie':
-          Cypress.Cookies.log(data.message, data.cookie, data.removed)
-          break
-        default:
-          break
-      }
-    })
-
-    ws.on('component:specs:changed', (specs) => {
-      state.setSpecs(specs)
-    })
-
-    ws.on('dev-server:hmr:error', (error) => {
-      Cypress.stop()
-      localBus.emit('script:error', error)
-    })
-
-    _.each(socketRerunEvents, (event) => {
-      ws.on(event, rerun)
-    })
-
-    _.each(socketToDriverEvents, (event) => {
-      ws.on(event, (...args) => {
-        Cypress.emit(event, ...args)
-      })
-    })
-
-    const logCommand = (logId) => {
-      const consoleProps = Cypress.runner.getConsolePropsForLogById(logId)
-
-      logger.logFormatted(consoleProps)
-    }
-
-    reporterBus.on('runner:console:error', ({ err, commandId }) => {
-      if (!Cypress) return
-
-      if (commandId || err) logger.clearLog()
-
-      if (commandId) logCommand(commandId)
-
-      if (err) logger.logError(err.stack)
-    })
-
-    reporterBus.on('runner:console:log', (logId) => {
-      if (!Cypress) return
-
-      logger.clearLog()
-      logCommand(logId)
-    })
-
-    reporterBus.on('focus:tests', this.focusTests)
-
-    reporterBus.on('get:user:editor', (cb) => {
-      ws.emit('get:user:editor', cb)
-    })
-
-    reporterBus.on('set:user:editor', (editor) => {
-      ws.emit('set:user:editor', editor)
-    })
-
-    reporterBus.on('runner:restart', rerun)
-
-    function sendEventIfSnapshotProps (logId, event) {
-      if (!Cypress) return
-
-      const snapshotProps = Cypress.runner.getSnapshotPropsForLogById(logId)
-
-      if (snapshotProps) {
-        localBus.emit(event, snapshotProps)
-      }
-    }
-
-    reporterBus.on('runner:show:snapshot', (logId) => {
-      sendEventIfSnapshotProps(logId, 'show:snapshot')
-    })
-
-    reporterBus.on('runner:hide:snapshot', this._hideSnapshot.bind(this))
-
-    reporterBus.on('runner:pin:snapshot', (logId) => {
-      sendEventIfSnapshotProps(logId, 'pin:snapshot')
-    })
-
-    reporterBus.on('runner:unpin:snapshot', this._unpinSnapshot.bind(this))
-
-    reporterBus.on('runner:resume', () => {
-      if (!Cypress) return
-
-      Cypress.emit('resume:all')
-    })
-
-    reporterBus.on('runner:next', () => {
-      if (!Cypress) return
-
-      Cypress.emit('resume:next')
-    })
-
-    reporterBus.on('runner:stop', () => {
-      if (!Cypress) return
-
-      Cypress.stop()
-    })
-
-    reporterBus.on('save:state', (state) => {
-      this.saveState(state)
-    })
-
-    reporterBus.on('external:open', (url) => {
-      ws.emit('external:open', url)
-    })
-
-    reporterBus.on('open:file', (url) => {
-      ws.emit('open:file', url)
-    })
-
-    const $window = $(window)
-
-    // when we actually unload then
-    // nuke all of the cookies again
-    // so we clear out unload
-    $window.on('unload', () => {
-      this._clearAllCookies()
-    })
-
-    // when our window triggers beforeunload
-    // we know we've change the URL and we need
-    // to clear our cookies
-    // additionally we set unload to true so
-    // that Cypress knows not to set any more
-    // cookies
-    $window.on('beforeunload', () => {
-      reporterBus.emit('reporter:restart:test:run')
-
-      this._clearAllCookies()
-      this._setUnload()
-    })
-  },
-
-  start (config) {
-    if (config.socketId) {
-      ws.emit('app:connect', config.socketId)
-    }
-  },
-
-  setup (config) {
-    Cypress = this.Cypress = $Cypress.create(config)
-
-    // expose Cypress globally
-    // since CT AUT shares the window with the spec, we don't want to overwrite
-    // our spec Cypress instance with the component's Cypress instance
-    if (window.top === window) {
-      window.Cypress = Cypress
-    }
-
-    this._addCypressListeners(Cypress)
-
-    ws.emit('watch:test:file', config.spec)
-  },
-
-  isBrowser (browserName) {
-    if (!this.Cypress) return false
-
-    return this.Cypress.isBrowser(browserName)
-  },
-
-  initialize ($autIframe, config) {
-    performance.mark('initialize-start')
-
-    return Cypress.initialize({
-      $autIframe,
-      onSpecReady: () => {
-        // get the current runnable in case we reran mid-test due to a visit
-        // to a new domain
-        ws.emit('get:existing:run:state', (state = {}) => {
-          if (!Cypress.runner) {
-            // the tests have been reloaded
-            return
-          }
-
-          const runnables = Cypress.runner.normalizeAll(state.tests)
-          const run = () => {
-            performance.mark('initialize-end')
-            performance.measure('initialize', 'initialize-start', 'initialize-end')
-
-            this._runDriver(state)
-          }
-
-          reporterBus.emit('runnables:ready', runnables)
-
-          if (state.numLogs) {
-            Cypress.runner.setNumLogs(state.numLogs)
-          }
-
-          if (state.startTime) {
-            Cypress.runner.setStartTime(state.startTime)
-          }
-
-          if (config.isTextTerminal && !state.currentId) {
-            // we are in run mode and it's the first load
-            // store runnables in backend and maybe send to dashboard
-            return ws.emit('set:runnables:and:maybe:record:tests', runnables, run)
-          }
-
-          if (state.currentId) {
-            // if we have a currentId it means
-            // we need to tell the Cypress to skip
-            // ahead to that test
-            Cypress.runner.resumeAtTest(state.currentId, state.emissions)
-          }
-
-          run()
-        })
-      },
-    })
-  },
-
-  _addCypressListeners (Cypress) {
-    Cypress.on('message', (msg, data, cb) => {
-      ws.emit('client:request', msg, data, cb)
-    })
-
-    _.each(driverToSocketEvents, (event) => {
-      Cypress.on(event, (...args) => {
-        return ws.emit(event, ...args)
-      })
-    })
-
-    Cypress.on('collect:run:state', () => {
-      if (Cypress.env('NO_COMMAND_LOG')) {
-        return Promise.resolve()
-      }
-
-      return new Promise((resolve) => {
-        reporterBus.emit('reporter:collect:run:state', resolve)
-      })
-    })
-
-    Cypress.on('log:added', (log) => {
-      const displayProps = Cypress.runner.getDisplayPropsForLog(log)
-
-      reporterBus.emit('reporter:log:add', displayProps)
-    })
-
-    Cypress.on('log:changed', (log) => {
-      const displayProps = Cypress.runner.getDisplayPropsForLog(log)
-
-      reporterBus.emit('reporter:log:state:changed', displayProps)
-    })
-
-    Cypress.on('before:screenshot', (config, cb) => {
-      const beforeThenCb = () => {
-        localBus.emit('before:screenshot', config)
-        cb()
-      }
-
-      if (Cypress.env('NO_COMMAND_LOG')) {
-        return beforeThenCb()
-      }
-
-      const wait = !config.appOnly && config.waitForCommandSynchronization
-
-      if (!config.appOnly) {
-        reporterBus.emit('test:set:state', _.pick(config, 'id', 'isOpen'), wait ? beforeThenCb : undefined)
-      }
-
-      if (!wait) beforeThenCb()
-    })
-
-    Cypress.on('after:screenshot', (config) => {
-      localBus.emit('after:screenshot', config)
-    })
-
-    _.each(driverToReporterEvents, (event) => {
-      Cypress.on(event, (...args) => {
-        reporterBus.emit(event, ...args)
-      })
-    })
-
-    _.each(driverTestEvents, (event) => {
-      Cypress.on(event, (test, cb) => {
-        reporterBus.emit(event, test, cb)
-      })
-    })
-
-    _.each(driverToLocalAndReporterEvents, (event) => {
-      Cypress.on(event, (...args) => {
-        localBus.emit(event, ...args)
-        reporterBus.emit(event, ...args)
-      })
-    })
-
-    _.each(driverToLocalEvents, (event) => {
-      Cypress.on(event, (...args) => {
-        return localBus.emit(event, ...args)
-      })
-    })
-
-    Cypress.on('script:error', (err) => {
-      Cypress.stop()
-      localBus.emit('script:error', err)
-    })
-  },
-
-  _runDriver (state) {
-    performance.mark('run-s')
-    Cypress.run(() => {
-      performance.mark('run-e')
-      performance.measure('run', 'run-s', 'run-e')
-    })
-
-    reporterBus.emit('reporter:start', {
-      firefoxGcInterval: Cypress.getFirefoxGcInterval(),
-      startTime: Cypress.runner.getStartTime(),
-      numPassed: state.passed,
-      numFailed: state.failed,
-      numPending: state.pending,
-      autoScrollingEnabled: state.autoScrollingEnabled,
-      scrollTop: state.scrollTop,
-    })
-  },
-
-  stop () {
-    localBus.removeAllListeners()
-    ws.off()
-  },
-
-  _reRun (state) {
-    if (!Cypress) return
-
-    state.setIsLoading(true)
-
-    // when we are re-running we first
-    // need to stop cypress always
-    Cypress.stop()
-
-    return this._restart()
-    .then(() => {
-      // this probably isn't 100% necessary
-      // since Cypress will fall out of scope
-      // but we want to be aggressive here
-      // and force GC early and often
-      Cypress.removeAllListeners()
-
-      localBus.emit('restart')
-    })
-  },
-
-  _restart () {
-    return new Promise((resolve) => {
-      reporterBus.once('reporter:restarted', resolve)
-      reporterBus.emit('reporter:restart:test:run')
-    })
-  },
-
-  emit (event, ...args) {
-    localBus.emit(event, ...args)
-  },
-
-  on (event, ...args) {
-    localBus.on(event, ...args)
-  },
-
-  off (event, ...args) {
-    localBus.off(event, ...args)
-  },
-
-  notifyRunningSpec (specFile) {
-    ws.emit('spec:changed', specFile)
-  },
-
-  focusTests () {
-    ws.emit('focus:tests')
-  },
-
-  snapshotUnpinned () {
-    this._unpinSnapshot()
-    this._hideSnapshot()
-    reporterBus.emit('reporter:snapshot:unpinned')
-  },
-
-  _unpinSnapshot () {
-    localBus.emit('unpin:snapshot')
-  },
-
-  _hideSnapshot () {
-    localBus.emit('hide:snapshot')
-  },
-
-  launchBrowser (browser) {
-    ws.emit('reload:browser', window.location.toString(), browser && browser.name)
-  },
-
-  // clear all the cypress specific cookies
-  // whenever our app starts
-  // and additional when we stop running our tests
-  _clearAllCookies () {
-    if (!Cypress) return
-
-    Cypress.Cookies.clearCypressCookies()
-  },
-
-  _setUnload () {
-    if (!Cypress) return
-
-    Cypress.Cookies.setCy('unload', true)
-  },
-
-  saveState (state) {
-    ws.emit('save:app:state', state)
-  },
-}
-
-export default eventManager
diff --git a/packages/runner-ct/src/lib/state.ts b/packages/runner-ct/src/lib/state.ts
index 110e0ff5ff..157ddd9ca7 100644
--- a/packages/runner-ct/src/lib/state.ts
+++ b/packages/runner-ct/src/lib/state.ts
@@ -1,8 +1,8 @@
 import { action, computed, observable } from 'mobx'
 import _ from 'lodash'
-import automation from './automation'
 import { UIPlugin } from '../plugins/UIPlugin'
 import { nanoid } from 'nanoid'
+import { automation } from '@packages/runner-shared'
 import {
   DEFAULT_REPORTER_WIDTH,
   LEFT_NAV_WIDTH,
@@ -21,16 +21,13 @@ interface Defaults {
   messageType: string
   messageControls: unknown
 
-  width: number
-  height: number
-
   reporterWidth: number | null
   pluginsHeight: number | null
   specListWidth: number | null
   isSpecsListOpen: boolean
 
-  viewportHeight: number
-  viewportWidth: number
+  height: number
+  width: number
 
   url: string
   highlightUrl: boolean
@@ -48,11 +45,8 @@ const _defaults: Defaults = {
   messageType: '',
   messageControls: null,
 
-  width: 500,
   height: 500,
-
-  viewportHeight: 500,
-  viewportWidth: 500,
+  width: 500,
 
   pluginsHeight: PLUGIN_BAR_HEIGHT,
 
@@ -111,9 +105,6 @@ export default class State {
   @observable windowWidth = 0
   @observable windowHeight = 0
 
-  @observable viewportWidth = _defaults.viewportWidth
-  @observable viewportHeight = _defaults.viewportHeight
-
   @observable automation = automation.CONNECTING
 
   @observable.ref scriptError: string | undefined
@@ -175,10 +166,10 @@ export default class State {
       return 1
     }
 
-    if (autAreaWidth < this.viewportWidth || autAreaHeight < this.viewportHeight) {
+    if (autAreaWidth < this.width || autAreaHeight < this.height) {
       return Math.min(
-        autAreaWidth / this.viewportWidth,
-        autAreaHeight / this.viewportHeight,
+        autAreaWidth / this.width,
+        autAreaHeight / this.height,
       )
     }
 
@@ -218,9 +209,9 @@ export default class State {
     this.screenshotting = screenshotting
   }
 
-  @action updateAutViewportDimensions (dimensions: { viewportWidth: number, viewportHeight: number }) {
-    this.viewportHeight = dimensions.viewportHeight
-    this.viewportWidth = dimensions.viewportWidth
+  @action updateDimensions (width: number, height: number) {
+    this.height = height
+    this.width = width
   }
 
   @action toggleIsSpecsListOpen () {
@@ -249,7 +240,11 @@ export default class State {
     this.specListWidth = width
   }
 
-  @action updateWindowDimensions ({ windowWidth, windowHeight }: { windowWidth?: number, windowHeight?: number }) {
+  @action updateWindowDimensions ({
+    windowWidth,
+    windowHeight,
+    headerHeight,
+  }: { windowWidth?: number, windowHeight?: number, headerHeight?: number }) {
     if (windowWidth) {
       this.windowWidth = windowWidth
     }
@@ -257,6 +252,10 @@ export default class State {
     if (windowHeight) {
       this.windowHeight = windowHeight
     }
+
+    if (headerHeight) {
+      this.headerHeight = headerHeight
+    }
   }
 
   @action clearMessage () {
@@ -330,7 +329,7 @@ export default class State {
   }
 
   runMultiMode = async () => {
-    const eventManager = require('./event-manager').default
+    const eventManager = require('@packages/runner-shared').eventManager
     const waitForRunEnd = () => new Promise((res) => eventManager.on('run:end', res))
 
     this.setSpec(null)
diff --git a/packages/runner-ct/src/main.jsx b/packages/runner-ct/src/main.jsx
index 8821350108..c0ac5634f8 100644
--- a/packages/runner-ct/src/main.jsx
+++ b/packages/runner-ct/src/main.jsx
@@ -4,8 +4,9 @@ import { render } from 'react-dom'
 import { utils as driverUtils } from '@packages/driver'
 import defaultEvents from '@packages/reporter/src/lib/events'
 
+import App from './app/RunnerCt'
 import State from './lib/state'
-import Container from './app/container'
+import { Container, eventManager } from '@packages/runner-shared'
 import util from './lib/util'
 
 // to support async/await
@@ -62,9 +63,20 @@ const Runner = {
       Runner.state = state
       Runner.configureMobx = configure
 
-      state.updateAutViewportDimensions({ viewportWidth: config.viewportWidth, viewportHeight: config.viewportHeight })
+      state.updateDimensions(config.viewportWidth, config.viewportHeight)
 
-      render(<Container config={config} state={state} />, el)
+      const container = (
+        <Container
+          config={config}
+          runner='ct'
+          state={state}
+          App={App}
+          hasSpecFile={util.hasSpecFile}
+          eventManager={eventManager}
+        />
+      )
+
+      render(container, el)
     })()
   },
 }
diff --git a/packages/runner-ct/tsconfig.json b/packages/runner-ct/tsconfig.json
index ab62866152..b45f3e0289 100644
--- a/packages/runner-ct/tsconfig.json
+++ b/packages/runner-ct/tsconfig.json
@@ -27,7 +27,7 @@
     // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
     /* Strict Type-Checking Options */
     // "traceResolution": true,
-    "strict": false,
+    "strict": true,
     "forceConsistentCasingInFileNames": true,
     /**
      * Skip type checking of all declaration files (*.d.ts).
@@ -56,6 +56,8 @@
   },
   "include": [
     "./lib/*.ts",
+    "./src*.ts",
+    "./src*.tsx",
     "./index.ts",
     "./index.d.ts",
     "./../ts/index.d.ts"
diff --git a/packages/runner-ct/webpack.config.ts b/packages/runner-ct/webpack.config.ts
index cf7bea0f2c..e5ef5a8f35 100644
--- a/packages/runner-ct/webpack.config.ts
+++ b/packages/runner-ct/webpack.config.ts
@@ -21,20 +21,31 @@ babelLoader.use.options.plugins.push([require.resolve('babel-plugin-prismjs'), {
   css: false,
 }])
 
-let pngRule
-// @ts-ignore
-const nonPngRules = _.filter(commonConfig.module.rules, (rule) => {
-  // @ts-ignore
-  if (rule.test.toString().includes('png')) {
-    pngRule = rule
-
-    return false
+const { pngRule, nonPngRules } = commonConfig!.module!.rules!.reduce<{
+  nonPngRules: webpack.RuleSetRule[]
+  pngRule: webpack.RuleSetRule | undefined
+}>((acc, rule) => {
+  if (rule?.test?.toString().includes('png')) {
+    return {
+      ...acc,
+      pngRule: rule,
+    }
   }
 
-  return true
+  return {
+    ...acc,
+    nonPngRules: [...acc.nonPngRules, rule],
+  }
+}, {
+  nonPngRules: [],
+  pngRule: undefined,
 })
 
-pngRule.use[0].options = {
+if (!pngRule || !pngRule.use) {
+  throw Error('Could not find png loader')
+}
+
+(pngRule.use as webpack.RuleSetLoader[])[0].options = {
   name: '[name].[ext]',
   outputPath: 'img',
   publicPath: '/__cypress/runner/img/',
diff --git a/packages/runner-shared/.eslintrc.json b/packages/runner-shared/.eslintrc.json
new file mode 100644
index 0000000000..e9a3358d11
--- /dev/null
+++ b/packages/runner-shared/.eslintrc.json
@@ -0,0 +1,137 @@
+{
+  "plugins": [
+    "cypress",
+    "@cypress/dev"
+  ],
+  "extends": [
+    "plugin:@cypress/dev/general",
+    "plugin:@cypress/dev/tests",
+    "plugin:@cypress/dev/react",
+    "plugin:react/recommended",
+    "plugin:react-hooks/recommended",
+    "../reporter/src/.eslintrc.json"
+  ],
+  "parser": "@typescript-eslint/parser",
+  "env": {
+    "cypress/globals": true
+  },
+  "rules": {
+    "react/display-name": "off",
+    "react/function-component-definition": [
+      "error",
+      {
+        "namedComponents": "arrow-function",
+        "unnamedComponents": "arrow-function"
+      }
+    ],
+    "react/jsx-boolean-value": [
+      "error",
+      "always"
+    ],
+    "react/jsx-closing-bracket-location": [
+      "error",
+      "line-aligned"
+    ],
+    "react/jsx-closing-tag-location": "error",
+    "react/jsx-curly-brace-presence": [
+      "error",
+      {
+        "props": "never",
+        "children": "never"
+      }
+    ],
+    "react/jsx-curly-newline": "error",
+    "react/jsx-filename-extension": [
+      "warn",
+      {
+        "extensions": [
+          ".js",
+          ".jsx",
+          ".tsx"
+        ]
+      }
+    ],
+    "react/jsx-first-prop-new-line": "error",
+    "react/jsx-max-props-per-line": [
+      "error",
+      {
+        "maximum": 1,
+        "when": "multiline"
+      }
+    ],
+    "react/jsx-no-bind": [
+      "error",
+      {
+        "ignoreDOMComponents": true
+      }
+    ],
+    "react/jsx-no-useless-fragment": "error",
+    "react/jsx-one-expression-per-line": [
+      "error",
+      {
+        "allow": "literal"
+      }
+    ],
+    "react/jsx-sort-props": [
+      "error",
+      {
+        "callbacksLast": true,
+        "ignoreCase": true,
+        "noSortAlphabetically": true,
+        "reservedFirst": true
+      }
+    ],
+    "react/jsx-tag-spacing": [
+      "error",
+      {
+        "closingSlash": "never",
+        "beforeSelfClosing": "always"
+      }
+    ],
+    "react/jsx-wrap-multilines": [
+      "error",
+      {
+        "declaration": "parens-new-line",
+        "assignment": "parens-new-line",
+        "return": "parens-new-line",
+        "arrow": "parens-new-line",
+        "condition": "parens-new-line",
+        "logical": "parens-new-line",
+        "prop": "parens-new-line"
+      }
+    ],
+    "react/no-array-index-key": "error",
+    "react/no-unescaped-entities": "off",
+    "react/prop-types": "off",
+    "quote-props": [
+      "error",
+      "as-needed"
+    ]
+  },
+  "overrides": [
+    {
+      "files": [
+        "lib/*"
+      ],
+      "rules": {
+        "no-console": 1
+      }
+    },
+    {
+      "files": [
+        "**/*.json"
+      ],
+      "rules": {
+        "quotes": "off",
+        "comma-dangle": "off"
+      }
+    },
+    {
+      "files": "*.tsx",
+      "rules": {
+        "no-unused-vars": "off",
+        "react/jsx-no-bind": "off"
+      }
+    }
+  ]
+}
diff --git a/packages/runner-shared/package.json b/packages/runner-shared/package.json
new file mode 100644
index 0000000000..0df75b5d7d
--- /dev/null
+++ b/packages/runner-shared/package.json
@@ -0,0 +1,32 @@
+{
+  "name": "@packages/runner-shared",
+  "version": "0.0.0-development",
+  "private": true,
+  "main": "src/index.ts",
+  "scripts": {
+    "test": "yarn test-unit",
+    "test-unit": "mocha --config test/.mocharc.json src/**/*.spec.* --exit"
+  },
+  "dependencies": {
+    "@cypress/react-tooltip": "0.5.3",
+    "ansi-to-html": "0.6.14",
+    "classnames": "2.3.1",
+    "lodash": "4.17.21",
+    "mobx": "5.15.4",
+    "mobx-react": "6.1.8",
+    "react": "16.8.6",
+    "react-dom": "16.8.6"
+  },
+  "devDependencies": {
+    "@packages/driver": "0.0.0-development",
+    "@packages/socket": "0.0.0-development",
+    "@packages/web-config": "0.0.0-development",
+    "chai": "4.2.0",
+    "chai-enzyme": "1.0.0-beta.1",
+    "enzyme": "3.11.0",
+    "enzyme-adapter-react-16": "1.15.2",
+    "mocha": "7.0.1",
+    "sinon": "7.5.0",
+    "sinon-chai": "3.3.0"
+  }
+}
diff --git a/packages/runner/src/errors/automation-disconnected.spec.jsx b/packages/runner-shared/src/automation-disconnected/automation-disconnected.spec.jsx
similarity index 90%
rename from packages/runner/src/errors/automation-disconnected.spec.jsx
rename to packages/runner-shared/src/automation-disconnected/automation-disconnected.spec.jsx
index 68378bfd9f..567ef3338d 100644
--- a/packages/runner/src/errors/automation-disconnected.spec.jsx
+++ b/packages/runner-shared/src/automation-disconnected/automation-disconnected.spec.jsx
@@ -2,7 +2,7 @@ import React from 'react'
 import { shallow } from 'enzyme'
 import sinon from 'sinon'
 
-import AutomationDisconnected from './automation-disconnected'
+import { AutomationDisconnected } from '.'
 
 describe('<AutomationDisconnected />', () => {
   it('renders the message', () => {
diff --git a/packages/runner-ct/src/errors/automation-disconnected.jsx b/packages/runner-shared/src/automation-disconnected/index.jsx
similarity index 92%
rename from packages/runner-ct/src/errors/automation-disconnected.jsx
rename to packages/runner-shared/src/automation-disconnected/index.jsx
index 221ce25d84..0bb0131aae 100644
--- a/packages/runner-ct/src/errors/automation-disconnected.jsx
+++ b/packages/runner-shared/src/automation-disconnected/index.jsx
@@ -1,6 +1,6 @@
 import React from 'react'
 
-export default ({ onReload }) => (
+export const AutomationDisconnected = ({ onReload }) => (
   <div className='runner automation-failure'>
     <div className='automation-message automation-disconnected'>
       <p>Whoops, the Cypress extension has disconnected.</p>
diff --git a/packages/runner-shared/src/automation-element/index.tsx b/packages/runner-shared/src/automation-element/index.tsx
new file mode 100644
index 0000000000..dbbc84e292
--- /dev/null
+++ b/packages/runner-shared/src/automation-element/index.tsx
@@ -0,0 +1,17 @@
+import React from 'react'
+
+export const automationElementId = '__cypress-string'
+
+interface AutomationElementProps {
+  randomString: string
+}
+
+export const AutomationElement: React.FC<AutomationElementProps> = ({
+  randomString,
+}) => {
+  return (
+    <div id={automationElementId} style={{ display: 'none' }}>
+      {randomString}
+    </div>
+  )
+}
diff --git a/packages/runner-ct/src/lib/automation.ts b/packages/runner-shared/src/automation.ts
similarity index 79%
rename from packages/runner-ct/src/lib/automation.ts
rename to packages/runner-shared/src/automation.ts
index 52302df3d4..239246f9e9 100644
--- a/packages/runner-ct/src/lib/automation.ts
+++ b/packages/runner-shared/src/automation.ts
@@ -1,4 +1,4 @@
-export default {
+export const automation = {
   CONNECTING: 'CONNECTING',
   MISSING: 'MISSING',
   CONNECTED: 'CONNECTED',
diff --git a/packages/runner-ct/src/iframe/blank-contents.js b/packages/runner-shared/src/blank-contents/index.js
similarity index 98%
rename from packages/runner-ct/src/iframe/blank-contents.js
rename to packages/runner-shared/src/blank-contents/index.js
index 970e717fef..812ac6b79b 100644
--- a/packages/runner-ct/src/iframe/blank-contents.js
+++ b/packages/runner-shared/src/blank-contents/index.js
@@ -1,4 +1,4 @@
-export default () => {
+export const blankContents = () => {
   return `
     <style>
       body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,button,textarea,p,blockquote,th,td{margin:0;padding:0;}table{border-collapse:collapse;border-spacing:0;}fieldset,img,a img{border:none;}address,caption,cite,code,dfn,em,strong,th,var,optgroup{font-style:inherit;font-weight:inherit;}del,ins{text-decoration:none;}li{list-style:none;}caption,th{text-align:left;}h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}q:before,q:after{content:'';}abbr,acronym{border:0;font-variant:normal;}sup{vertical-align:baseline;}sub{vertical-align:baseline;}legend{color:#000;}
diff --git a/packages/runner-shared/src/config-file-formatted.tsx b/packages/runner-shared/src/config-file-formatted.tsx
new file mode 100644
index 0000000000..92f95e07be
--- /dev/null
+++ b/packages/runner-shared/src/config-file-formatted.tsx
@@ -0,0 +1,40 @@
+import React from 'react'
+import { isUndefined } from 'lodash'
+
+const configFileFormatted = (configFile) => {
+  if (configFile === false) {
+    return (
+      <>
+        <code>cypress.json</code>
+        {' '}
+file (currently disabled by
+        {' '}
+        <code>--config-file false</code>
+)
+      </>
+    )
+  }
+
+  if (isUndefined(configFile) || configFile === 'cypress.json') {
+    return (
+      <>
+        <code>cypress.json</code>
+        {' '}
+file
+      </>
+    )
+  }
+
+  return (
+    <>
+custom config file
+      <code>
+        {configFile}
+      </code>
+    </>
+  )
+}
+
+export {
+  configFileFormatted,
+}
diff --git a/packages/runner/src/app/container.spec.jsx b/packages/runner-shared/src/container/container.spec.jsx
similarity index 73%
rename from packages/runner/src/app/container.spec.jsx
rename to packages/runner-shared/src/container/container.spec.jsx
index 09961faf93..2f3a9efffe 100644
--- a/packages/runner/src/app/container.spec.jsx
+++ b/packages/runner-shared/src/container/container.spec.jsx
@@ -2,16 +2,18 @@ import React from 'react'
 import { mount, shallow } from 'enzyme'
 import sinon from 'sinon'
 
-import App from './app'
-import automation from '../lib/automation'
-import AutomationDisconnected from '../errors/automation-disconnected'
-import NoAutomation from '../errors/no-automation'
-import NoSpec from '../errors/no-spec'
-import State from '../lib/state'
+import App from '@packages/runner/src/app/app'
+import { AutomationDisconnected } from '../automation-disconnected'
+import { automation } from '../automation'
+import { NoAutomation } from '../no-automation'
+import { automationElementId } from '../automation-element'
+import NoSpec from '@packages/runner/src/errors/no-spec'
 
-import Container, { automationElementId } from './container'
+import { Container } from '.'
 
 const createProps = () => ({
+  runner: 'e2e',
+  hasSpecFile: sinon.stub(),
   config: {
     browsers: [],
     integrationFolder: '',
@@ -19,6 +21,15 @@ const createProps = () => ({
     projectName: '',
     viewportHeight: 0,
     viewportWidth: 0,
+    spec: {
+      name: 'test/spec.js',
+      relative: './this/is/a/test/spec.js',
+      absolute: '/Users/me/code/this/is/a/test/spec.js',
+    },
+    state: {
+      autoScrollingEnabled: true,
+      reporterWidth: 300,
+    },
   },
   eventManager: {
     addGlobalListeners: sinon.spy(),
@@ -28,11 +39,19 @@ const createProps = () => ({
       emit: () => {},
       on: () => {},
     },
+    on: () => {},
+    start: () => {},
+    setup: () => {},
   },
-  state: new State(),
-  util: {
-    hasSpecFile: sinon.stub(),
+  state: {
+    automation: undefined,
+    defaults: {
+      width: 500,
+      height: 500,
+    },
   },
+  App,
+  NoSpec,
 })
 
 describe('<Container />', () => {
@@ -53,12 +72,11 @@ describe('<Container />', () => {
       const props = createProps()
 
       props.state.automation = automation.CONNECTING
-      component = shallow(<Container {...props} />)
+      component = mount(<Container {...props} />)
     })
 
     it('renders the automation element alone', () => {
       expect(component.find(`#${automationElementId}`)).to.exist
-      expect(component.find(`#${automationElementId}`).parent()).not.to.exist
     })
   })
 
@@ -117,7 +135,7 @@ describe('<Container />', () => {
     beforeEach(() => {
       props = createProps()
       props.state.automation = automation.CONNECTED
-      props.util.hasSpecFile.returns(false)
+      props.hasSpecFile.returns(false)
       component = shallow(<Container {...props} />)
     })
 
@@ -125,35 +143,11 @@ describe('<Container />', () => {
       expect(component.find(NoSpec)).to.have.prop('config', props.config)
     })
 
-    it('renders the automation element', () => {
-      expect(component.find(`#${automationElementId}`)).to.exist
-    })
-
     it('renders the app when hash changes with and has a spec file', () => {
-      props.util.hasSpecFile.returns(true)
+      props.hasSpecFile.returns(true)
       component.find(NoSpec).prop('onHashChange')()
       component.update()
       expect(component.find(App)).to.exist
     })
   })
-
-  describe('when automation is connected and there is a spec file', () => {
-    let props
-    let component
-
-    beforeEach(() => {
-      props = createProps()
-      props.state.automation = automation.CONNECTED
-      props.util.hasSpecFile.returns(true)
-      component = shallow(<Container {...props} />)
-    })
-
-    it('renders <App />', () => {
-      expect(component.find(App)).to.exist
-    })
-
-    it('renders the automation element', () => {
-      expect(component.find(`#${automationElementId}`)).to.exist
-    })
-  })
 })
diff --git a/packages/runner-ct/src/app/container.jsx b/packages/runner-shared/src/container/index.jsx
similarity index 52%
rename from packages/runner-ct/src/app/container.jsx
rename to packages/runner-shared/src/container/index.jsx
index 79f48ddf43..6eb1879063 100644
--- a/packages/runner-ct/src/app/container.jsx
+++ b/packages/runner-shared/src/container/index.jsx
@@ -1,20 +1,13 @@
 import { observer } from 'mobx-react'
-import PropTypes from 'prop-types'
 import React, { Component } from 'react'
 
-import automation from '../lib/automation'
-import eventManager from '../lib/event-manager'
-import State from '../lib/state'
-import util from '../lib/util'
-
-import RunnerCt from './RunnerCt'
-import AutomationDisconnected from '../errors/automation-disconnected'
-import NoAutomation from '../errors/no-automation'
-
-const automationElementId = '__cypress-string'
+import { AutomationDisconnected } from '../automation-disconnected'
+import { automation } from '../automation'
+import { NoAutomation } from '../no-automation'
+import { automationElementId, AutomationElement } from '../automation-element'
 
 @observer
-class Container extends Component {
+export class Container extends Component {
   constructor (...args) {
     super(...args)
 
@@ -40,30 +33,34 @@ class Container extends Component {
         return this._automationDisconnected()
       case automation.CONNECTED:
       default:
-        return this._app()
+        if (this.props.runner === 'e2e') {
+          return this.props.hasSpecFile()
+            ? this._app()
+            : this._noSpec()
+        }
+
+        if (this.props.runner === 'ct') {
+          return this._app()
+        }
+
+        throw Error(`runner prop is required and must be 'e2e' or 'ct'. You passed: ${this.props.runner}.`)
     }
   }
 
   _automationElement () {
     return (
-      <div id={automationElementId} style={{ display: 'none' }}>
-        {this.randomString}
-      </div>
+      <AutomationElement randomString={this.randomString} />
     )
   }
 
   _app () {
-    return (
-      <RunnerCt {...this.props}>
-        {this._automationElement()}
-      </RunnerCt>
-    )
-  }
+    const { App, ...rest } = this.props
 
-  _checkSpecFile = () => {
-    if (this.props.util.hasSpecFile()) {
-      this.forceUpdate()
-    }
+    return (
+      <App {...rest}>
+        {this._automationElement()}
+      </App>
+    )
   }
 
   _noAutomation () {
@@ -82,18 +79,23 @@ class Container extends Component {
   _automationDisconnected () {
     return <AutomationDisconnected onReload={this.props.eventManager.launchBrowser} />
   }
+
+  // This two functions, _noSpec anad _checkSpecFile, are only used by the E2E runner.
+  // TODO: remove any runner specific code from this file.
+  _noSpec () {
+    const { NoSpec } = this.props
+
+    return (
+      <NoSpec config={this.props.config} onHashChange={this._checkSpecFile}>
+        {this._automationElement()}
+      </NoSpec>
+    )
+  }
+
+  // This is only used by the E2E runner.
+  _checkSpecFile = () => {
+    if (this.props.hasSpecFile()) {
+      this.forceUpdate()
+    }
+  }
 }
-
-Container.defaultProps = {
-  eventManager,
-  util,
-}
-
-Container.propTypes = {
-  config: PropTypes.object.isRequired,
-  state: PropTypes.instanceOf(State),
-}
-
-export { automationElementId }
-
-export default Container
diff --git a/packages/runner/src/lib/dom.js b/packages/runner-shared/src/dom.js
similarity index 98%
rename from packages/runner/src/lib/dom.js
rename to packages/runner-shared/src/dom.js
index 9530228040..8830936158 100644
--- a/packages/runner/src/lib/dom.js
+++ b/packages/runner-shared/src/dom.js
@@ -1,10 +1,10 @@
 import _ from 'lodash'
 
 import { $ } from '@packages/driver'
-import selectorPlaygroundHighlight from '../selector-playground/highlight'
+import { selectorPlaygroundHighlight } from './selector-playground/highlight'
 // The '!' tells webpack to disable normal loaders, and keep loaders with `enforce: 'pre'` and `enforce: 'post'`
 // This disables the CSSExtractWebpackPlugin and allows us to get the CSS as a raw string instead of saving it to a separate file.
-import selectorPlaygroundCSS from '!../selector-playground/selector-playground.scss'
+import selectorPlaygroundCSS from '!./selector-playground/selector-playground.scss'
 
 const styles = (styleString) => {
   return styleString.replace(/\s*\n\s*/g, '')
@@ -443,7 +443,7 @@ function removeBlackouts ($body) {
   $body.find('.__cypress-blackout').remove()
 }
 
-export default {
+export const dom = {
   addBlackout,
   removeBlackouts,
   addElementBoxModelLayers,
diff --git a/packages/runner/src/errors/error-messages.js b/packages/runner-shared/src/error-messages.js
similarity index 95%
rename from packages/runner/src/errors/error-messages.js
rename to packages/runner-shared/src/error-messages.js
index b255c6c1fd..af8a5c981c 100644
--- a/packages/runner/src/errors/error-messages.js
+++ b/packages/runner-shared/src/error-messages.js
@@ -1,4 +1,4 @@
-export default {
+export const errorMessages = {
   reporterError (err, specPath) {
     if (!err) return null
 
diff --git a/packages/runner/src/lib/event-manager.js b/packages/runner-shared/src/event-manager.js
similarity index 95%
rename from packages/runner/src/lib/event-manager.js
rename to packages/runner-shared/src/event-manager.js
index 6cc8104046..b9b4c674e0 100644
--- a/packages/runner/src/lib/event-manager.js
+++ b/packages/runner-shared/src/event-manager.js
@@ -5,10 +5,10 @@ import { action } from 'mobx'
 
 import { client } from '@packages/socket'
 
-import automation from './automation'
-import logger from './logger'
-import studioRecorder from '../studio/studio-recorder'
-import selectorPlaygroundModel from '../selector-playground/selector-playground-model'
+import { studioRecorder } from './studio'
+import { automation } from './automation'
+import { logger } from './logger'
+import { selectorPlaygroundModel } from './selector-playground'
 
 import $Cypress, { $ } from '@packages/driver'
 
@@ -26,7 +26,7 @@ const driverToLocalAndReporterEvents = 'run:start run:end'.split(' ')
 const driverToSocketEvents = 'backend:request automation:request mocha recorder:frame'.split(' ')
 const driverTestEvents = 'test:before:run:async test:after:run'.split(' ')
 const driverToLocalEvents = 'viewport:changed config stop url:changed page:loading visit:failed'.split(' ')
-const socketRerunEvents = 'runner:restart'.split(' ')
+const socketRerunEvents = 'runner:restart watched:file:changed'.split(' ')
 const socketToDriverEvents = 'net:event script:error'.split(' ')
 const localToReporterEvents = 'reporter:log:add reporter:log:state:changed reporter:log:remove'.split(' ')
 
@@ -47,7 +47,7 @@ if (window.Cypress) {
  */
 let Cypress
 
-const eventManager = {
+export const eventManager = {
   reporterBus,
 
   getCypress () {
@@ -99,6 +99,15 @@ const eventManager = {
       rerun()
     })
 
+    ws.on('component:specs:changed', (specs) => {
+      state.setSpecs(specs)
+    })
+
+    ws.on('dev-server:hmr:error', (error) => {
+      Cypress.stop()
+      localBus.emit('script:error', error)
+    })
+
     _.each(socketRerunEvents, (event) => {
       ws.on(event, rerun)
     })
@@ -290,9 +299,13 @@ const eventManager = {
     Cypress = this.Cypress = $Cypress.create(config)
 
     // expose Cypress globally
-    window.Cypress = Cypress
+    // since CT AUT shares the window with the spec, we don't want to overwrite
+    // our spec Cypress instance with the component's Cypress instance
+    if (window.top === window) {
+      window.Cypress = Cypress
+    }
 
-    this._addListeners()
+    this._addListeners(Cypress)
 
     ws.emit('watch:test:file', config.spec)
   },
@@ -585,6 +598,10 @@ const eventManager = {
     localBus.on(event, ...args)
   },
 
+  off (event, ...args) {
+    localBus.off(event, ...args)
+  },
+
   notifyRunningSpec (specFile) {
     ws.emit('spec:changed', specFile)
   },
@@ -630,5 +647,3 @@ const eventManager = {
     ws.emit('save:app:state', state)
   },
 }
-
-export default eventManager
diff --git a/packages/runner/src/header/header.spec.jsx b/packages/runner-shared/src/header/header.spec.jsx
similarity index 95%
rename from packages/runner/src/header/header.spec.jsx
rename to packages/runner-shared/src/header/header.spec.jsx
index babb87a531..0185aba143 100644
--- a/packages/runner/src/header/header.spec.jsx
+++ b/packages/runner-shared/src/header/header.spec.jsx
@@ -5,12 +5,10 @@ import sinon from 'sinon'
 import driver from '@packages/driver'
 import Tooltip from '@cypress/react-tooltip'
 
-import eventManager from '../lib/event-manager'
-import selectorPlaygroundModel from '../selector-playground/selector-playground-model'
-import studioRecorder from '../studio/studio-recorder'
-
-import Header from './header'
-import Studio from '../studio/studio'
+import { eventManager } from '../event-manager'
+import { Studio, studioRecorder } from '../studio'
+import { selectorPlaygroundModel } from '../selector-playground'
+import { Header } from '.'
 
 const getState = (props) => _.extend({
   defaults: {},
@@ -21,6 +19,7 @@ const propsWithState = (stateProps, configProps = {}) =>
   ({
     state: getState(stateProps),
     config: configProps,
+    runner: 'e2e',
   })
 
 describe('<Header />', () => {
@@ -297,7 +296,7 @@ describe('<Header />', () => {
 
   describe('viewport info', () => {
     it('has menu-open class on button click', () => {
-      const component = shallow(<Header {...propsWithState()} />)
+      const component = mount(<Header {...propsWithState()} />)
 
       component.find('.viewport-info button').simulate('click')
       expect(component.find('.viewport-info')).to.have.className('menu-open')
@@ -305,14 +304,14 @@ describe('<Header />', () => {
 
     it('displays width, height, and display scale', () => {
       const state = { width: 1, height: 2, displayScale: 3 }
-      const component = shallow(<Header {...propsWithState(state)} />)
+      const component = mount(<Header {...propsWithState(state)} />)
 
       expect(component.find('.viewport-info button').text()).to.contain('1 x 2 (3%)')
     })
 
     it('displays default width and height in menu', () => {
       const state = { defaults: { width: 4, height: 5 } }
-      const component = shallow(<Header {...propsWithState(state)} />)
+      const component = mount(<Header {...propsWithState(state)} />)
 
       expect(component.find('.viewport-menu pre').text()).to.contain('"viewportWidth": 4')
       expect(component.find('.viewport-menu pre').text()).to.contain('"viewportHeight": 5')
diff --git a/packages/runner-shared/src/header/index.tsx b/packages/runner-shared/src/header/index.tsx
new file mode 100644
index 0000000000..28a65e9104
--- /dev/null
+++ b/packages/runner-shared/src/header/index.tsx
@@ -0,0 +1,242 @@
+import cs from 'classnames'
+
+import { action, computed, observable } from 'mobx'
+import { observer } from 'mobx-react'
+import React, { Component, createRef } from 'react'
+import Tooltip from '@cypress/react-tooltip'
+import { $ } from '@packages/driver'
+
+import { ViewportInfo } from '../viewport-info'
+import { SelectorPlayground } from '../selector-playground/SelectorPlayground'
+import { selectorPlaygroundModel } from '../selector-playground'
+import { Studio, studioRecorder } from '../studio'
+import { eventManager } from '../event-manager'
+
+interface BaseState {
+  isLoading: boolean
+  isRunning: boolean
+  width: number
+  height: number
+  displayScale: number | undefined
+  defaults: {
+    width: number
+    height: number
+  }
+  updateWindowDimensions: (payload: { headerHeight: number }) => void
+}
+
+interface StateCT {
+  runner: 'ct'
+  state: {
+    screenshotting: boolean
+  } & BaseState
+}
+
+interface StateE2E {
+  runner: 'e2e'
+  state: {
+    url: string
+    isLoadingUrl: boolean
+    highlightUrl: boolean
+  } & BaseState
+}
+
+interface HeaderBaseProps {
+  config: {
+    configFile: string
+    [k: string]: unknown
+  }
+}
+
+type CtHeaderProps = StateCT & HeaderBaseProps
+
+type E2EHeaderProps = StateE2E & HeaderBaseProps
+
+type HeaderProps = CtHeaderProps | E2EHeaderProps
+
+@observer
+export class Header extends Component<HeaderProps> {
+  @observable showingViewportMenu = false
+  @observable urlInput = ''
+  @observable previousSelectorPlaygroundOpen: boolean = false
+  @observable previousRecorderIsOpen: boolean = false
+
+  urlInputRef = createRef<HTMLInputElement>()
+  headerRef = createRef<HTMLHeadElement>()
+
+  get studioForm () {
+    if (this.props.runner !== 'e2e') {
+      return
+    }
+
+    return (
+      <form
+        className={cs('url-container', {
+          loading: this.props.runner === 'e2e' && this.props.state.isLoadingUrl,
+          highlighted: this.props.runner === 'e2e' && this.props.state.highlightUrl,
+          'menu-open': this._studioNeedsUrl,
+        })}
+        onSubmit={this._visitUrlInput}
+      >
+        <input
+          ref={this.urlInputRef}
+          type='text'
+          className={cs('url', { 'input-active': this._studioNeedsUrl })}
+          value={this._studioNeedsUrl ? this.urlInput : this.props.state.url}
+          readOnly={!this._studioNeedsUrl}
+          onChange={this._onUrlInput}
+          onClick={this._openUrl}
+        />
+        <div className='popup-menu url-menu'>
+          <p>
+            <strong>Please enter a valid URL to visit.</strong>
+          </p>
+          <div className='menu-buttons'>
+            <button type='button' className='btn-cancel' onClick={this._cancelStudio}>Cancel</button>
+            <button type='submit' className='btn-submit' disabled={!this.urlInput}>
+              {`Go `}
+              <i className='fas fa-arrow-right' />
+            </button>
+          </div>
+        </div>
+        <span className='loading-container'>
+          ...loading
+          {' '}
+          <i className='fas fa-spinner fa-pulse' />
+        </span>
+      </form>
+    )
+  }
+
+  render () {
+    const { config, state } = this.props
+
+    return (
+      <header
+        ref={this.headerRef}
+        className={cs({
+          'showing-selector-playground': selectorPlaygroundModel.isOpen,
+          'showing-studio': studioRecorder.isOpen,
+          'display-none': this.props.runner === 'ct' && this.props.state.screenshotting,
+        })}
+      >
+        <div className='sel-url-wrap'>
+          <Tooltip
+            title='Open Selector Playground'
+            visible={selectorPlaygroundModel.isOpen || studioRecorder.isOpen ? false : null}
+            wrapperClassName='selector-playground-toggle-tooltip-wrapper'
+            className='cy-tooltip'
+          >
+            <button
+              aria-label='Open Selector Playground'
+              className='header-button selector-playground-toggle'
+              disabled={this.props.state.isLoading || state.isRunning || studioRecorder.isOpen}
+              onClick={this._togglePlaygroundOpen}
+            >
+              <i aria-hidden="true" className='fas fa-crosshairs' />
+            </button>
+          </Tooltip>
+          <div className={cs('menu-cover', { 'menu-cover-display': this._studioNeedsUrl })} />
+          {this.studioForm}
+        </div>
+
+        <ViewportInfo
+          showingViewportMenu={this.showingViewportMenu}
+          width={state.width}
+          height={state.height}
+          config={config}
+          displayScale={this.props.runner === 'e2e' ? state.displayScale : undefined}
+          defaults={{
+            width: state.defaults.width,
+            height: state.defaults.height,
+          }}
+          toggleViewportMenu={this._toggleViewportMenu}
+        />
+
+        <SelectorPlayground
+          model={selectorPlaygroundModel}
+          eventManager={eventManager}
+        />
+        {this.props.runner === 'e2e' &&
+          <Studio model={studioRecorder} hasUrl={!!this.props.state.url} />}
+      </header>
+    )
+  }
+
+  @action componentDidMount () {
+    this.previousSelectorPlaygroundOpen = selectorPlaygroundModel.isOpen
+    this.previousRecorderIsOpen = studioRecorder.isOpen
+
+    this.urlInput = this.props.config.baseUrl ? `${this.props.config.baseUrl}/` : ''
+  }
+
+  @action componentDidUpdate () {
+    if (selectorPlaygroundModel.isOpen !== this.previousSelectorPlaygroundOpen) {
+      this._updateWindowDimensions()
+      this.previousSelectorPlaygroundOpen = selectorPlaygroundModel.isOpen
+    }
+
+    if (studioRecorder.isOpen !== this.previousRecorderIsOpen) {
+      this._updateWindowDimensions()
+      this.previousRecorderIsOpen = studioRecorder.isOpen
+    }
+
+    if (this._studioNeedsUrl && this.urlInputRef.current) {
+      this.urlInputRef.current.focus()
+    }
+  }
+
+  _togglePlaygroundOpen = () => {
+    selectorPlaygroundModel.toggleOpen()
+  }
+
+  @action _toggleViewportMenu = () => {
+    this.showingViewportMenu = !this.showingViewportMenu
+  }
+
+  _updateWindowDimensions = () => {
+    if (!this.headerRef.current) {
+      return
+    }
+
+    this.props.state.updateWindowDimensions({
+      headerHeight: $(this.headerRef.current).outerHeight(),
+    })
+  }
+
+  _openUrl = () => {
+    if (this._studioNeedsUrl || this.props.runner !== 'e2e') {
+      return
+    }
+
+    window.open(this.props.state.url)
+  }
+
+  @computed get _studioNeedsUrl () {
+    if (this.props.runner !== 'e2e') {
+      return
+    }
+
+    return studioRecorder.needsUrl && !this.props.state.url
+  }
+
+  @action _onUrlInput = (e) => { // : React.FormEvent<HTMLInputElement>) => {
+    if (!this._studioNeedsUrl) return
+
+    this.urlInput = e.target.value
+  }
+
+  @action _visitUrlInput = (e: React.FormEvent<HTMLFormElement>) => {
+    e.preventDefault()
+
+    if (!this._studioNeedsUrl) return
+
+    studioRecorder.visitUrl(this.urlInput)
+
+    this.urlInput = ''
+  }
+
+  _cancelStudio = () => {
+    eventManager.emit('studio:cancel')
+  }
+}
diff --git a/packages/runner/src/iframe/aut-iframe.js b/packages/runner-shared/src/iframe/aut-iframe.js
similarity index 96%
rename from packages/runner/src/iframe/aut-iframe.js
rename to packages/runner-shared/src/iframe/aut-iframe.js
index ab1fd70aa5..8d78c7afbc 100644
--- a/packages/runner/src/iframe/aut-iframe.js
+++ b/packages/runner-shared/src/iframe/aut-iframe.js
@@ -1,15 +1,14 @@
 import _ from 'lodash'
 import { $ } from '@packages/driver'
+import { blankContents } from '../blank-contents'
+import { visitFailure } from '../visit-failure'
+import { selectorPlaygroundModel } from '../selector-playground'
+import { eventManager } from '../event-manager'
+import { dom } from '../dom'
+import { logger } from '../logger'
+import { studioRecorder } from '../studio'
 
-import dom from '../lib/dom'
-import logger from '../lib/logger'
-import eventManager from '../lib/event-manager'
-import visitFailure from './visit-failure'
-import blankContents from './blank-contents'
-import selectorPlaygroundModel from '../selector-playground/selector-playground-model'
-import studioRecorder from '../studio/studio-recorder'
-
-export default class AutIframe {
+export class AutIframe {
   constructor (config) {
     this.config = config
     this.debouncedToggleSelectorPlayground = _.debounce(this.toggleSelectorPlayground, 300)
diff --git a/packages/runner/src/iframe/iframe-model.js b/packages/runner-shared/src/iframe/iframe-model.js
similarity index 93%
rename from packages/runner/src/iframe/iframe-model.js
rename to packages/runner-shared/src/iframe/iframe-model.js
index a3563191ef..e2639ce697 100644
--- a/packages/runner/src/iframe/iframe-model.js
+++ b/packages/runner-shared/src/iframe/iframe-model.js
@@ -1,15 +1,14 @@
 import _ from 'lodash'
 import { action } from 'mobx'
 
-import eventManager from '../lib/event-manager'
-import selectorPlaygroundModel from '../selector-playground/selector-playground-model'
-import studioRecorder from '../studio/studio-recorder'
+import { selectorPlaygroundModel } from '../selector-playground'
+import { studioRecorder } from '../studio'
+import { eventManager } from '../event-manager'
 
-export default class IframeModel {
-  constructor ({ state, detachDom, removeHeadStyles, restoreDom, highlightEl, snapshotControls }) {
+export class IframeModel {
+  constructor ({ state, detachDom, restoreDom, highlightEl, snapshotControls }) {
     this.state = state
     this.detachDom = detachDom
-    this.removeHeadStyles = removeHeadStyles
     this.restoreDom = restoreDom
     this.highlightEl = highlightEl
     this.snapshotControls = snapshotControls
@@ -229,6 +228,8 @@ export default class IframeModel {
       htmlAttrs,
       snapshot: finalSnapshot,
       url: this.state.url,
+      // TODO: use same attr for both runner and runner-ct states.
+      // these refer to the same thing - the viewport dimensions.
       viewportWidth: this.state.width,
       viewportHeight: this.state.height,
     }
diff --git a/packages/runner-shared/src/iframe/index.ts b/packages/runner-shared/src/iframe/index.ts
new file mode 100644
index 0000000000..f6bb7a3795
--- /dev/null
+++ b/packages/runner-shared/src/iframe/index.ts
@@ -0,0 +1,3 @@
+export * from './iframe-model'
+
+export * from './aut-iframe'
diff --git a/packages/runner-shared/src/index.ts b/packages/runner-shared/src/index.ts
new file mode 100644
index 0000000000..27fbd8ab55
--- /dev/null
+++ b/packages/runner-shared/src/index.ts
@@ -0,0 +1,35 @@
+export * from './snapshot-controls'
+
+export * from './visit-failure'
+
+export * from './blank-contents'
+
+export * from './message'
+
+export * from './selector-playground'
+
+export * from './script-error'
+
+export * from './mobx'
+
+export * from './error-messages'
+
+export * from './iframe'
+
+export * from './dom'
+
+export * from './logger'
+
+export * from './event-manager'
+
+export * from './automation'
+
+export * from './studio'
+
+export * from './viewport-info'
+
+export * from './config-file-formatted'
+
+export * from './header'
+
+export * from './container'
diff --git a/packages/runner-ct/src/lib/logger.js b/packages/runner-shared/src/logger.js
similarity index 99%
rename from packages/runner-ct/src/lib/logger.js
rename to packages/runner-shared/src/logger.js
index a52ee1cacc..989baace2b 100644
--- a/packages/runner-ct/src/lib/logger.js
+++ b/packages/runner-shared/src/logger.js
@@ -2,7 +2,7 @@
 
 import _ from 'lodash'
 
-export default {
+export const logger = {
   log (...args) {
     console.log(...args)
   },
diff --git a/packages/runner-ct/src/message/message.tsx b/packages/runner-shared/src/message/index.tsx
similarity index 79%
rename from packages/runner-ct/src/message/message.tsx
rename to packages/runner-shared/src/message/index.tsx
index ce0978c363..eee9866da5 100644
--- a/packages/runner-ct/src/message/message.tsx
+++ b/packages/runner-shared/src/message/index.tsx
@@ -1,10 +1,20 @@
 import cs from 'classnames'
 import { observer } from 'mobx-react'
 import React, { forwardRef } from 'react'
-import State from '../lib/state'
+import './message.scss'
 
 interface MessageProps {
-  state: State
+  state: {
+    messageTitle?: string
+    messageControls?: unknown
+    messageDescription: string
+    messageType?: string
+    messageStyles: {
+      state: string
+      styles: React.CSSProperties
+      messageType: string
+    }
+  }
 }
 
 export const Message = observer(forwardRef<HTMLDivElement, MessageProps>(({ state }, ref) => {
diff --git a/packages/runner/src/message/message.scss b/packages/runner-shared/src/message/message.scss
similarity index 97%
rename from packages/runner/src/message/message.scss
rename to packages/runner-shared/src/message/message.scss
index f19b677065..12a0702782 100644
--- a/packages/runner/src/message/message.scss
+++ b/packages/runner-shared/src/message/message.scss
@@ -1,3 +1,5 @@
+@import '../variables.scss';
+
 .runner {
   .message-container {
     display: flex;
diff --git a/packages/runner-shared/src/mixins.scss b/packages/runner-shared/src/mixins.scss
new file mode 100644
index 0000000000..8bb024b672
--- /dev/null
+++ b/packages/runner-shared/src/mixins.scss
@@ -0,0 +1,4 @@
+@mixin button-active {
+  background-color: #e9e9e9;
+  box-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
+}
diff --git a/packages/runner-ct/src/lib/mobx.ts b/packages/runner-shared/src/mobx.ts
similarity index 100%
rename from packages/runner-ct/src/lib/mobx.ts
rename to packages/runner-shared/src/mobx.ts
diff --git a/packages/runner-ct/src/errors/no-automation.jsx b/packages/runner-shared/src/no-automation/index.jsx
similarity index 96%
rename from packages/runner-ct/src/errors/no-automation.jsx
rename to packages/runner-shared/src/no-automation/index.jsx
index fbf1b7721c..100411b60c 100644
--- a/packages/runner-ct/src/errors/no-automation.jsx
+++ b/packages/runner-shared/src/no-automation/index.jsx
@@ -48,7 +48,7 @@ const browserPicker = (browsers, onLaunchBrowser) => {
   )
 }
 
-export default ({ browsers, onLaunchBrowser }) => (
+export const NoAutomation = ({ browsers, onLaunchBrowser }) => (
   <div className='runner automation-failure'>
     <div className='automation-message'>
       <p>Whoops, we can't run your tests.</p>
diff --git a/packages/runner/src/errors/no-automation.spec.jsx b/packages/runner-shared/src/no-automation/no-automation.spec.jsx
similarity index 98%
rename from packages/runner/src/errors/no-automation.spec.jsx
rename to packages/runner-shared/src/no-automation/no-automation.spec.jsx
index 572653c20f..7bf7858210 100644
--- a/packages/runner/src/errors/no-automation.spec.jsx
+++ b/packages/runner-shared/src/no-automation/no-automation.spec.jsx
@@ -3,7 +3,7 @@ import React from 'react'
 import { shallow } from 'enzyme'
 import sinon from 'sinon'
 
-import NoAutomation from './no-automation'
+import { NoAutomation } from '.'
 
 const noBrowsers = []
 const browsersWithChosen = [
diff --git a/packages/runner-ct/src/errors/script-error.tsx b/packages/runner-shared/src/script-error/index.tsx
similarity index 87%
rename from packages/runner-ct/src/errors/script-error.tsx
rename to packages/runner-shared/src/script-error/index.tsx
index bc2482a17a..818d2e7888 100644
--- a/packages/runner-ct/src/errors/script-error.tsx
+++ b/packages/runner-shared/src/script-error/index.tsx
@@ -1,5 +1,5 @@
 import React from 'react'
-import { namedObserver } from '../lib/mobx'
+import { namedObserver } from '../mobx'
 const ansiToHtml = require('ansi-to-html')
 
 const convert = new ansiToHtml({
@@ -24,5 +24,3 @@ export const ScriptError: React.FC<{ error: string }> = namedObserver('ScriptErr
     />
   )
 })
-
-export default ScriptError
diff --git a/packages/runner/src/errors/script-error.spec.jsx b/packages/runner-shared/src/script-error/script-error.spec.jsx
similarity index 90%
rename from packages/runner/src/errors/script-error.spec.jsx
rename to packages/runner-shared/src/script-error/script-error.spec.jsx
index fc72732a31..7156f02780 100644
--- a/packages/runner/src/errors/script-error.spec.jsx
+++ b/packages/runner-shared/src/script-error/script-error.spec.jsx
@@ -1,7 +1,7 @@
 import React from 'react'
 import { shallow } from 'enzyme'
 
-import ScriptError from './script-error'
+import { ScriptError } from '@packages/runner-shared'
 
 describe('<ScriptError />', () => {
   it('renders nothing when there is no script error', () => {
@@ -12,9 +12,9 @@ describe('<ScriptError />', () => {
   })
 
   it('renders ansi as colors', () => {
-    const state = { error: { error: `Webpack Compilation Error
+    const state = { error: `Webpack Compilation Error
       11 |     it('is true for actual jquery instances', () => 
-     @ multi ./cypress/integration/dom/jquery_spec.js main[0]` } }
+     @ multi ./cypress/integration/dom/jquery_spec.js main[0]` }
     const component = shallow(<ScriptError {...state} />)
     const { dangerouslySetInnerHTML } = component.props()
 
diff --git a/packages/runner-ct/src/selector-playground/selector-playground.jsx b/packages/runner-shared/src/selector-playground/SelectorPlayground.jsx
similarity index 97%
rename from packages/runner-ct/src/selector-playground/selector-playground.jsx
rename to packages/runner-shared/src/selector-playground/SelectorPlayground.jsx
index 23e3c5b5ab..68804da92e 100644
--- a/packages/runner-ct/src/selector-playground/selector-playground.jsx
+++ b/packages/runner-shared/src/selector-playground/SelectorPlayground.jsx
@@ -4,8 +4,7 @@ import { action, observable } from 'mobx'
 import { observer } from 'mobx-react'
 import React, { Component } from 'react'
 import Tooltip from '@cypress/react-tooltip'
-
-import eventManager from '../lib/event-manager'
+import './selector-playground.scss'
 
 const defaultCopyText = 'Copy to clipboard'
 const defaultPrintText = 'Print to console'
@@ -113,7 +112,7 @@ class SelectorPlayground extends Component {
           {' Learn more'}
         </a>
         <button className='close' onClick={this._togglePlaygroundOpen}>
-x
+          x
         </button>
       </div>
     )
@@ -155,7 +154,7 @@ x
       >
         <button onClick={this._toggleMethodPicker}>
           <i className='fas fa-caret-down'></i>
-          {` cy. ${model.method}`}
+          {` cy.${model.method}`}
         </button>
         <div className='method-picker'>
           {_.map(methods, (method) => (
@@ -216,7 +215,7 @@ x
   }
 
   _printToConsole = () => {
-    eventManager.emit('print:selector:elements:to:console')
+    this.props.eventManager.emit('print:selector:elements:to:console')
     this._setPrintText('Printed!')
   }
 
@@ -244,4 +243,4 @@ x
   }
 }
 
-export default SelectorPlayground
+export { SelectorPlayground }
diff --git a/packages/runner-ct/src/selector-playground/highlight.jsx b/packages/runner-shared/src/selector-playground/highlight.jsx
similarity index 95%
rename from packages/runner-ct/src/selector-playground/highlight.jsx
rename to packages/runner-shared/src/selector-playground/highlight.jsx
index be4b10b44a..5ea47f7e5a 100644
--- a/packages/runner-ct/src/selector-playground/highlight.jsx
+++ b/packages/runner-shared/src/selector-playground/highlight.jsx
@@ -31,7 +31,7 @@ function renderHighlight (container, props) {
   render(<Highlight {...props} />, container)
 }
 
-export default {
+export const selectorPlaygroundHighlight = {
   render: renderHighlight,
   unmount: unmountComponentAtNode,
 }
diff --git a/packages/runner-shared/src/selector-playground/index.js b/packages/runner-shared/src/selector-playground/index.js
new file mode 100644
index 0000000000..d7a8532ea3
--- /dev/null
+++ b/packages/runner-shared/src/selector-playground/index.js
@@ -0,0 +1 @@
+export * from './selector-playground-model'
diff --git a/packages/runner-ct/src/selector-playground/selector-playground-model.js b/packages/runner-shared/src/selector-playground/selector-playground-model.js
similarity index 95%
rename from packages/runner-ct/src/selector-playground/selector-playground-model.js
rename to packages/runner-shared/src/selector-playground/selector-playground-model.js
index 107d9e6ef6..3d19a31f38 100644
--- a/packages/runner-ct/src/selector-playground/selector-playground-model.js
+++ b/packages/runner-shared/src/selector-playground/selector-playground-model.js
@@ -77,4 +77,4 @@ class SelectorPlaygroundModel {
   }
 }
 
-export default new SelectorPlaygroundModel()
+export const selectorPlaygroundModel = new SelectorPlaygroundModel()
diff --git a/packages/runner/src/selector-playground/selector-playground.scss b/packages/runner-shared/src/selector-playground/selector-playground.scss
similarity index 100%
rename from packages/runner/src/selector-playground/selector-playground.scss
rename to packages/runner-shared/src/selector-playground/selector-playground.scss
diff --git a/packages/runner/src/selector-playground/selector-playground.spec.jsx b/packages/runner-shared/src/selector-playground/selector-playground.spec.jsx
similarity index 91%
rename from packages/runner/src/selector-playground/selector-playground.spec.jsx
rename to packages/runner-shared/src/selector-playground/selector-playground.spec.jsx
index b80b28e0c1..2a7e0d63dd 100644
--- a/packages/runner/src/selector-playground/selector-playground.spec.jsx
+++ b/packages/runner-shared/src/selector-playground/selector-playground.spec.jsx
@@ -4,9 +4,7 @@ import { mount, shallow } from 'enzyme'
 import sinon from 'sinon'
 
 import Tooltip from '@cypress/react-tooltip'
-
-import eventManager from '../lib/event-manager'
-import SelectorPlayground from './selector-playground'
+import { SelectorPlayground } from './SelectorPlayground'
 
 const createModel = (props) => _.extend({
   method: 'get',
@@ -184,8 +182,15 @@ describe('<SelectorPlayground />', () => {
     })
 
     it('prints to console when clicked', () => {
-      sinon.stub(eventManager, 'emit')
-      const component = mount(<SelectorPlayground model={model} />)
+      const eventManager = {
+        emit: sinon.stub(),
+      }
+      const component = mount(
+        <SelectorPlayground
+          model={model}
+          eventManager={eventManager}
+        />,
+      )
 
       component.find('.print-to-console').simulate('click')
       expect(eventManager.emit).to.be.calledWith('print:selector:elements:to:console')
@@ -194,14 +199,31 @@ describe('<SelectorPlayground />', () => {
     })
 
     it('sets tooltip text to "Printed!" when successful', () => {
-      const component = mount(<SelectorPlayground model={model} />)
+      const eventManager = {
+        emit: sinon.stub(),
+      }
+      const component = mount(
+        <SelectorPlayground
+          model={model}
+          eventManager={eventManager}
+        />,
+      )
 
       component.find('.print-to-console').simulate('click')
       expect(component.find(Tooltip).at(3)).to.have.prop('title', 'Printed!')
     })
 
     it('resets tooltip text when mousing out of button', () => {
-      const component = mount(<SelectorPlayground model={model} />)
+      const eventManager = {
+        emit: sinon.stub(),
+      }
+      const component = mount(
+        <SelectorPlayground
+          model={model}
+          eventManager={eventManager}
+        />,
+      )
+
       const randomEl = document.createElement('div')
 
       component.find('.print-to-console').simulate('click')
diff --git a/packages/runner-shared/src/snapshot-controls/index.ts b/packages/runner-shared/src/snapshot-controls/index.ts
new file mode 100644
index 0000000000..cc3b640e65
--- /dev/null
+++ b/packages/runner-shared/src/snapshot-controls/index.ts
@@ -0,0 +1 @@
+export * from './snapshot-controls'
diff --git a/packages/runner/src/iframe/snapshot-controls.jsx b/packages/runner-shared/src/snapshot-controls/snapshot-controls.jsx
similarity index 97%
rename from packages/runner/src/iframe/snapshot-controls.jsx
rename to packages/runner-shared/src/snapshot-controls/snapshot-controls.jsx
index fd2fd5c641..10e6407d13 100644
--- a/packages/runner/src/iframe/snapshot-controls.jsx
+++ b/packages/runner-shared/src/snapshot-controls/snapshot-controls.jsx
@@ -4,6 +4,7 @@ import { action } from 'mobx'
 import { observer } from 'mobx-react'
 import React, { Component } from 'react'
 import Tooltip from '@cypress/react-tooltip'
+import './snapshot-controls.scss'
 
 @observer
 class SnapshotControls extends Component {
@@ -48,10 +49,10 @@ class SnapshotControls extends Component {
       <span className='snapshot-state-picker'>
         {_.map(snapshots, (snapshot, index) => (
           <button
+            key={snapshot.name || index}
             className={cs({
               'state-is-selected': this.props.state.snapshot.stateIndex === index,
             })}
-            key={snapshot.name || index}
             href="#"
             onClick={this._changeState(index)}
           >
@@ -75,4 +76,4 @@ class SnapshotControls extends Component {
   })
 }
 
-export default SnapshotControls
+export { SnapshotControls }
diff --git a/packages/runner/src/iframe/snapshot-controls.scss b/packages/runner-shared/src/snapshot-controls/snapshot-controls.scss
similarity index 96%
rename from packages/runner/src/iframe/snapshot-controls.scss
rename to packages/runner-shared/src/snapshot-controls/snapshot-controls.scss
index 0ee2b5c529..46a950f19a 100644
--- a/packages/runner/src/iframe/snapshot-controls.scss
+++ b/packages/runner-shared/src/snapshot-controls/snapshot-controls.scss
@@ -1,3 +1,6 @@
+@import "../variables.scss";
+@import "../mixins.scss";
+
 .runner {
   .snapshot-controls {
     display: flex;
diff --git a/packages/runner/static/studio.gif b/packages/runner-shared/src/static/studio.gif
similarity index 100%
rename from packages/runner/static/studio.gif
rename to packages/runner-shared/src/static/studio.gif
diff --git a/packages/runner-shared/src/studio/index.js b/packages/runner-shared/src/studio/index.js
new file mode 100644
index 0000000000..64b5c1b001
--- /dev/null
+++ b/packages/runner-shared/src/studio/index.js
@@ -0,0 +1,5 @@
+export * from './studio'
+
+export * from './studio-modals'
+
+export * from './studio-recorder'
diff --git a/packages/runner/src/studio/studio-modals.jsx b/packages/runner-shared/src/studio/studio-modals.jsx
similarity index 75%
rename from packages/runner/src/studio/studio-modals.jsx
rename to packages/runner-shared/src/studio/studio-modals.jsx
index 3a0b3c5236..3050746d20 100644
--- a/packages/runner/src/studio/studio-modals.jsx
+++ b/packages/runner-shared/src/studio/studio-modals.jsx
@@ -3,9 +3,9 @@ import { observer } from 'mobx-react'
 import React, { Component } from 'react'
 import { Dialog } from '@reach/dialog'
 import VisuallyHidden from '@reach/visually-hidden'
+import { eventManager } from '@packages/runner-shared'
 
-import eventManager from '../lib/event-manager'
-import studioRecorder from './studio-recorder'
+import { studioRecorder } from './studio-recorder'
 
 @observer
 export class StudioInstructionsModal extends Component {
@@ -19,7 +19,10 @@ export class StudioInstructionsModal extends Component {
       >
         <div className='body'>
           <h1 className='title'>
-            <i className='fas fa-magic icon' /> Studio <span className='beta'>BETA</span>
+            <i className='fas fa-magic icon' />
+            {' '}
+Studio
+            <span className='beta'>BETA</span>
           </h1>
           <div className='content center'>
             <div className='text'>
@@ -27,15 +30,29 @@ export class StudioInstructionsModal extends Component {
             </div>
             <div className='text center-box'>
               <ul>
-                <li><pre>.check()</pre></li>
-                <li><pre>.click()</pre></li>
-                <li><pre>.select()</pre></li>
-                <li><pre>.type()</pre></li>
-                <li><pre>.uncheck()</pre></li>
+                <li>
+                  <pre>.check()</pre>
+                </li>
+                <li>
+                  <pre>.click()</pre>
+                </li>
+                <li>
+                  <pre>.select()</pre>
+                </li>
+                <li>
+                  <pre>.type()</pre>
+                </li>
+                <li>
+                  <pre>.uncheck()</pre>
+                </li>
               </ul>
             </div>
             <div className='text'>
-              This feature is currently in Beta and we will be adding more commands and abilities in the future. Your <a href='https://on.cypress.io/studio-beta' target='_blank'>feedback</a> will be highly influential to our team.
+              This feature is currently in Beta and we will be adding more commands and abilities in the future. Your
+              {' '}
+              <a href='https://on.cypress.io/studio-beta' target='_blank' rel="noreferrer">feedback</a>
+              {' '}
+will be highly influential to our team.
             </div>
           </div>
           <div className='controls'>
@@ -44,7 +61,7 @@ export class StudioInstructionsModal extends Component {
         </div>
         <button className='close-button' onClick={this.props.close}>
           <VisuallyHidden>Close</VisuallyHidden>
-          <span aria-hidden>
+          <span aria-hidden={true}>
             <i className='fas fa-times' />
           </span>
         </button>
@@ -65,10 +82,13 @@ export class StudioInitModal extends Component {
       >
         <div className='body'>
           <h1 className='title'>
-            <i className='fas fa-magic icon' /> Studio <span className='beta'>BETA</span>
+            <i className='fas fa-magic icon' />
+            {' '}
+Studio
+            <span className='beta'>BETA</span>
           </h1>
           <div className='gif'>
-            <img src={require('../../static/studio.gif')} alt='Studio' />
+            <img src={require('../static/studio.gif')} alt='Studio' />
           </div>
           <div className='content center'>
             <div className='text'>
@@ -81,7 +101,7 @@ export class StudioInitModal extends Component {
         </div>
         <button className='close-button' onClick={this._close}>
           <VisuallyHidden>Close</VisuallyHidden>
-          <span aria-hidden>
+          <span aria-hidden={true}>
             <i className='fas fa-times' />
           </span>
         </button>
@@ -111,13 +131,15 @@ export class StudioSaveModal extends Component {
       >
         <div className='body'>
           <h1 className='title'>
-            <i className='fas fa-magic icon' /> Save New Test
+            <i className='fas fa-magic icon' />
+            {' '}
+Save New Test
           </h1>
           <div className='content'>
             <form onSubmit={this._save}>
               <div className='text'>
                 <label className='text-strong' htmlFor='testName'>Test Name</label>
-                <input id='testName' type='text' value={this.name} onChange={this._onInputChange} required />
+                <input id='testName' type='text' value={this.name} required={true} onChange={this._onInputChange} />
               </div>
               <div className='center'>
                 <button className='btn-main' type='submit' disabled={!this.name}>
@@ -129,7 +151,7 @@ export class StudioSaveModal extends Component {
         </div>
         <button className='close-button' onClick={studioRecorder.closeSaveModal}>
           <VisuallyHidden>Close</VisuallyHidden>
-          <span aria-hidden>
+          <span aria-hidden={true}>
             <i className='fas fa-times' />
           </span>
         </button>
@@ -158,4 +180,4 @@ const StudioModals = () => (
   </>
 )
 
-export default StudioModals
+export { StudioModals }
diff --git a/packages/runner/src/studio/studio-modals.scss b/packages/runner-shared/src/studio/studio-modals.scss
similarity index 100%
rename from packages/runner/src/studio/studio-modals.scss
rename to packages/runner-shared/src/studio/studio-modals.scss
diff --git a/packages/runner/src/studio/studio-modals.spec.jsx b/packages/runner-shared/src/studio/studio-modals.spec.jsx
similarity index 95%
rename from packages/runner/src/studio/studio-modals.spec.jsx
rename to packages/runner-shared/src/studio/studio-modals.spec.jsx
index 26f8ce6dc3..1ed2bdd1b0 100644
--- a/packages/runner/src/studio/studio-modals.spec.jsx
+++ b/packages/runner-shared/src/studio/studio-modals.spec.jsx
@@ -2,10 +2,10 @@ import React from 'react'
 import { shallow } from 'enzyme'
 import sinon from 'sinon'
 import { Dialog } from '@reach/dialog'
+import { eventManager } from '../event-manager'
 
-import StudioModals, { StudioInstructionsModal, StudioInitModal, StudioSaveModal } from './studio-modals'
-import studioRecorder from './studio-recorder'
-import eventManager from '../lib/event-manager'
+import { StudioModals, StudioInstructionsModal, StudioInitModal, StudioSaveModal } from './studio-modals'
+import { studioRecorder } from './studio-recorder'
 
 describe('<StudioModals />', () => {
   beforeEach(() => {
@@ -27,7 +27,7 @@ describe('<StudioModals />', () => {
 
   describe('<StudioInstructionsModal />', () => {
     it('passes open prop to dialog', () => {
-      const component = shallow(<StudioInstructionsModal open={false} close={() => {}} />)
+      const component = shallow(<StudioInstructionsModal open={false} close={sinon.stub()} />)
 
       expect(component.find(Dialog)).to.have.prop('isOpen', false)
 
diff --git a/packages/runner/src/studio/studio-recorder.js b/packages/runner-shared/src/studio/studio-recorder.js
similarity index 99%
rename from packages/runner/src/studio/studio-recorder.js
rename to packages/runner-shared/src/studio/studio-recorder.js
index bd62f2ace0..9e31b30ae2 100644
--- a/packages/runner/src/studio/studio-recorder.js
+++ b/packages/runner-shared/src/studio/studio-recorder.js
@@ -1,8 +1,7 @@
 import { action, computed, observable } from 'mobx'
 import { $ } from '@packages/driver'
 import $driverUtils from '@packages/driver/src/cypress/utils'
-
-import eventManager from '../lib/event-manager'
+import { eventManager } from '@packages/runner-shared'
 
 const saveErrorMessage = (message) => {
   return `\
@@ -542,4 +541,4 @@ export class StudioRecorder {
   }
 }
 
-export default new StudioRecorder()
+export const studioRecorder = new StudioRecorder()
diff --git a/packages/runner/src/studio/studio-recorder.spec.js b/packages/runner-shared/src/studio/studio-recorder.spec.js
similarity index 99%
rename from packages/runner/src/studio/studio-recorder.spec.js
rename to packages/runner-shared/src/studio/studio-recorder.spec.js
index 7b267cdf61..d586dc0968 100644
--- a/packages/runner/src/studio/studio-recorder.spec.js
+++ b/packages/runner-shared/src/studio/studio-recorder.spec.js
@@ -1,9 +1,9 @@
 import sinon from 'sinon'
 import $ from 'jquery'
 import driver from '@packages/driver'
+import { eventManager } from '@packages/runner-shared'
 
-import studioRecorder, { StudioRecorder } from './studio-recorder'
-import eventManager from '../lib/event-manager'
+import { StudioRecorder, studioRecorder } from './studio-recorder'
 
 const createEvent = (props) => {
   return {
@@ -42,7 +42,7 @@ describe('StudioRecorder', () => {
     sinon.restore()
   })
 
-  it('exports a singleton by default', () => {
+  it('exports a singleton by named export', () => {
     expect(studioRecorder).to.be.instanceOf(StudioRecorder)
   })
 
diff --git a/packages/runner/src/studio/studio.jsx b/packages/runner-shared/src/studio/studio.jsx
similarity index 86%
rename from packages/runner/src/studio/studio.jsx
rename to packages/runner-shared/src/studio/studio.jsx
index ded5f92368..5d5d635880 100644
--- a/packages/runner/src/studio/studio.jsx
+++ b/packages/runner-shared/src/studio/studio.jsx
@@ -1,8 +1,8 @@
 import React, { Component } from 'react'
 import Tooltip from '@cypress/react-tooltip'
 import cs from 'classnames'
+import { eventManager } from '@packages/runner-shared'
 
-import eventManager from '../lib/event-manager'
 import { StudioInstructionsModal } from './studio-modals'
 
 class Studio extends Component {
@@ -17,19 +17,22 @@ class Studio extends Component {
 
     return (
       <div className='header-popup studio'>
+        {/* eslint-disable react/jsx-no-bind */}
         <StudioInstructionsModal open={this.state.modalOpen} close={() => this.setState({ modalOpen: false })} />
         <div className='text-block'>
           <span className={cs('icon', { 'is-active': model.isActive && !model.isFailed && hasUrl })}>
             <i className='fas' />
-          </span>{' '}
-          <span className='title'>Studio</span>{' '}
+          </span>
+          {' '}
+          <span className='title'>Studio</span>
+          {' '}
           <span className='beta'>Beta</span>
         </div>
         <div className='text-block'>
-          <a href='#' onClick={this._showModal} className={cs('available-commands', { 'link-disabled': model.isLoading })}>Available Commands</a>
+          <a href='#' className={cs('available-commands', { 'link-disabled': model.isLoading })} onClick={this._showModal}>Available Commands</a>
         </div>
         <div className='text-block'>
-          <a href={!model.isLoading ? 'https://on.cypress.io/studio-beta' : undefined} target='_blank' className={cs('give-feedback', { 'link-disabled': model.isLoading })}>Give Feedback</a>
+          <a href={!model.isLoading ? 'https://on.cypress.io/studio-beta' : undefined} target='_blank' className={cs('give-feedback', { 'link-disabled': model.isLoading })} rel="noreferrer">Give Feedback</a>
         </div>
         <div className='studio-controls'>
           <Tooltip
@@ -98,4 +101,4 @@ class Studio extends Component {
   }
 }
 
-export default Studio
+export { Studio }
diff --git a/packages/runner/src/studio/studio.spec.jsx b/packages/runner-shared/src/studio/studio.spec.jsx
similarity index 98%
rename from packages/runner/src/studio/studio.spec.jsx
rename to packages/runner-shared/src/studio/studio.spec.jsx
index 915b1ccc9a..3083dbf8df 100644
--- a/packages/runner/src/studio/studio.spec.jsx
+++ b/packages/runner-shared/src/studio/studio.spec.jsx
@@ -1,12 +1,11 @@
 import React from 'react'
 import { shallow } from 'enzyme'
 import sinon from 'sinon'
-
 import Tooltip from '@cypress/react-tooltip'
 
-import Studio from './studio'
+import { Studio } from './studio'
 import { StudioInstructionsModal } from './studio-modals'
-import eventManager from '../lib/event-manager'
+import { eventManager } from '../event-manager'
 
 const createModel = (props) => {
   return {
diff --git a/packages/runner-shared/src/variables.scss b/packages/runner-shared/src/variables.scss
new file mode 100644
index 0000000000..d5e0a8e0f0
--- /dev/null
+++ b/packages/runner-shared/src/variables.scss
@@ -0,0 +1,21 @@
+$message-height: 33px;
+
+%clearfix {
+  &:before,
+  &:after {
+    content: "";
+    display: table;
+  }
+  &:after {
+    clear: both;
+  }
+}
+
+$success: #08c18d;
+$error: #e94f5f;
+$link-text: #3380FF;
+$reporter-min-width: 450px;
+$message-height: 33px;
+$font-mono: Consolas, Monaco, 'Andale Mono', monospace;
+$font-sans: 'Mulish', 'Helvetica Neue', 'Arial', sans-serif;
+$open-sans: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
\ No newline at end of file
diff --git a/packages/runner-shared/src/viewport-info/index.tsx b/packages/runner-shared/src/viewport-info/index.tsx
new file mode 100644
index 0000000000..f9c64642f7
--- /dev/null
+++ b/packages/runner-shared/src/viewport-info/index.tsx
@@ -0,0 +1,73 @@
+import React from 'react'
+import cs from 'classnames'
+
+import { namedObserver } from '../mobx'
+import { configFileFormatted } from '../config-file-formatted'
+
+interface ViewportInfoProps {
+  showingViewportMenu: boolean
+  width: number
+  height: number
+  displayScale: number | undefined
+  config: {
+    configFile: unknown // Similar to Cypress.RuntimeConfigOptions, but has some extra properties
+    [key: string]: unknown
+  }
+  defaults: {
+    width: number
+    height: number
+  }
+  toggleViewportMenu: () => void
+}
+
+export const ViewportInfo: React.FC<ViewportInfoProps> = namedObserver('ViewportInfo', ({
+  showingViewportMenu,
+  width,
+  height,
+  displayScale,
+  defaults,
+  config,
+  toggleViewportMenu,
+}: ViewportInfoProps) => {
+  return (
+    <ul className='menu'>
+      <li className={cs('viewport-info', { 'menu-open': showingViewportMenu })}>
+        <button onClick={toggleViewportMenu}>
+          {width}
+          {' '}
+          <span className='the-x'>x</span>
+          {' '}
+          {height}
+          {' '}
+          <span className='viewport-scale'>
+            {displayScale && `(${displayScale}%)`}
+          </span>
+          <i className='fas fa-fw fa-info-circle'></i>
+        </button>
+        <div className='popup-menu viewport-menu'>
+          {/* eslint-disable react/jsx-one-expression-per-line */}
+          <p>The <strong>viewport</strong> determines the width and height of your application. By default the viewport will be
+            <strong>{` ${defaults.width}`}px</strong> by
+            <strong>{` ${defaults.height}`}px</strong> unless specified by a
+            {' '}<code>cy.viewport</code> command.
+          </p>
+          <p>Additionally you can override the default viewport dimensions by specifying these values in your {configFileFormatted(config.configFile)}.</p>
+          <pre>{/* eslint-disable indent */}
+            {`{
+  "viewportWidth": ${defaults.width},
+  "viewportHeight": ${defaults.height}
+}`}
+          </pre>
+          {/* eslint-enable indent */}
+          <p>
+            <a href='https://on.cypress.io/viewport' target='_blank' rel='noreferrer'>
+              <i className='fas fa-info-circle'></i>
+              Read more about viewport here.
+            </a>
+          </p>
+          {/* eslint-enable react/jsx-one-expression-per-line */}
+        </div>
+      </li>
+    </ul>
+  )
+})
diff --git a/packages/runner-ct/src/iframe/visit-failure.js b/packages/runner-shared/src/visit-failure/index.js
similarity index 98%
rename from packages/runner-ct/src/iframe/visit-failure.js
rename to packages/runner-shared/src/visit-failure/index.js
index 896c105e61..0e6140f72a 100644
--- a/packages/runner-ct/src/iframe/visit-failure.js
+++ b/packages/runner-shared/src/visit-failure/index.js
@@ -1,4 +1,4 @@
-export default (props) => {
+export const visitFailure = (props) => {
   const { status, statusText, contentType } = props
 
   const getContentType = () => {
diff --git a/packages/runner-shared/test/.mocharc.json b/packages/runner-shared/test/.mocharc.json
new file mode 100644
index 0000000000..741f9e0f78
--- /dev/null
+++ b/packages/runner-shared/test/.mocharc.json
@@ -0,0 +1,5 @@
+{
+  "file": "test/helper.js",
+  "require": "../web-config/node-register",
+  "extension": "ts,jsx,tsx,js"
+}
diff --git a/packages/runner-shared/test/helper.js b/packages/runner-shared/test/helper.js
new file mode 100644
index 0000000000..60faa3a3e1
--- /dev/null
+++ b/packages/runner-shared/test/helper.js
@@ -0,0 +1,45 @@
+import { returnMockRequire, register } from '@packages/web-config/node-jsdom-setup'
+import sinon from 'sinon'
+
+const driverMock = {}
+
+register({
+  enzyme: require('enzyme'),
+  EnzymeAdapter: require('enzyme-adapter-react-16'),
+  chaiEnzyme: require('chai-enzyme'),
+  requireOverride (depPath) {
+    if (depPath === '@packages/driver') {
+      return driverMock
+    }
+
+    // TODO: refactor w/ regex
+    if (depPath.includes('.gif')) {
+      return ''
+    }
+  },
+})
+
+const io = returnMockRequire('@packages/socket/lib/browser', { client: {} })
+
+io.client.connect = sinon.stub().returns({ emit: () => {}, on: () => {} })
+
+const _useFakeTimers = sinon.useFakeTimers
+let timers = []
+
+sinon.useFakeTimers = function (...args) {
+  const ret = _useFakeTimers.apply(this, args)
+
+  timers.push(ret)
+}
+
+beforeEach(() => {
+  driverMock.$ = sinon.stub().throws('$ called without being stubbed')
+})
+
+afterEach(() => {
+  timers.forEach((clock) => {
+    return clock.restore()
+  })
+
+  timers = []
+})
diff --git a/packages/runner-shared/tsconfig.json b/packages/runner-shared/tsconfig.json
new file mode 100644
index 0000000000..0c3d8b6a65
--- /dev/null
+++ b/packages/runner-shared/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "extends": "../ts/tsconfig.json",
+  "compilerOptions": {
+    "jsx": "react",
+    "experimentalDecorators": true
+  }
+}
\ No newline at end of file
diff --git a/packages/runner/src/app/app.jsx b/packages/runner/src/app/app.jsx
index 3ba8c9cfd3..eac483a45c 100644
--- a/packages/runner/src/app/app.jsx
+++ b/packages/runner/src/app/app.jsx
@@ -6,16 +6,17 @@ import React, { Component } from 'react'
 import { findDOMNode } from 'react-dom'
 import { Reporter } from '@packages/reporter'
 import { $ } from '@packages/driver'
+import {
+  Message,
+  errorMessages,
+  StudioModals,
+  Header,
+} from '@packages/runner-shared'
 
-import errorMessages from '../errors/error-messages'
 import util from '../lib/util'
-import State from '../lib/state'
 
-import Header from '../header/header'
 import Iframes from '../iframe/iframes'
-import Message from '../message/message'
 import Resizer from './resizer'
-import StudioModals from '../studio/studio-modals'
 
 @observer
 class App extends Component {
@@ -53,7 +54,7 @@ class App extends Component {
           className='runner container'
           style={{ left: this.props.state.absoluteReporterWidth }}
         >
-          <Header ref='header' {...this.props} />
+          <Header ref='header' runner='e2e' {...this.props} />
           <Iframes ref='iframes' {...this.props} />
           <Message ref='message' state={this.props.state} />
           {this.props.children}
@@ -250,7 +251,6 @@ App.propTypes = {
       on: PropTypes.func.isRequired,
     }).isRequired,
   }).isRequired,
-  state: PropTypes.instanceOf(State).isRequired,
 }
 
 export default App
diff --git a/packages/runner/src/app/app.spec.jsx b/packages/runner/src/app/app.spec.jsx
index 9b15d15edf..4c6981d452 100644
--- a/packages/runner/src/app/app.spec.jsx
+++ b/packages/runner/src/app/app.spec.jsx
@@ -3,8 +3,8 @@ import { shallow } from 'enzyme'
 import sinon from 'sinon'
 import driver from '@packages/driver'
 
+import { Message } from '@packages/runner-shared'
 import * as reporter from '@packages/reporter'
-import Message from '../message/message'
 import State from '../lib/state'
 
 const Reporter = reporter.Reporter = () => <div />
diff --git a/packages/runner/src/app/container.jsx b/packages/runner/src/app/container.jsx
deleted file mode 100644
index c5426e852c..0000000000
--- a/packages/runner/src/app/container.jsx
+++ /dev/null
@@ -1,102 +0,0 @@
-import { observer } from 'mobx-react'
-import PropTypes from 'prop-types'
-import React, { Component } from 'react'
-
-import automation from '../lib/automation'
-import eventManager from '../lib/event-manager'
-import State from '../lib/state'
-import util from '../lib/util'
-
-import App from './app'
-import AutomationDisconnected from '../errors/automation-disconnected'
-import NoAutomation from '../errors/no-automation'
-import NoSpec from '../errors/no-spec'
-
-const automationElementId = '__cypress-string'
-
-@observer
-class Container extends Component {
-  constructor (...args) {
-    super(...args)
-
-    this.randomString = `${Math.random()}`
-  }
-
-  componentDidMount () {
-    this.props.eventManager.addGlobalListeners(this.props.state, {
-      element: automationElementId,
-      string: this.randomString,
-    })
-  }
-
-  render () {
-    switch (this.props.state.automation) {
-      case automation.CONNECTING:
-        return this._automationElement()
-      case automation.MISSING:
-        return this._noAutomation()
-      case automation.DISCONNECTED:
-        return this._automationDisconnected()
-      case automation.CONNECTED:
-      default:
-        return this.props.util.hasSpecFile() ? this._app() : this._noSpec()
-    }
-  }
-
-  _automationElement () {
-    return (
-      <div id={automationElementId} style={{ display: 'none' }}>
-        {this.randomString}
-      </div>
-    )
-  }
-
-  _app () {
-    return (
-      <App {...this.props}>
-        {this._automationElement()}
-      </App>
-    )
-  }
-
-  _noSpec () {
-    return (
-      <NoSpec config={this.props.config} onHashChange={this._checkSpecFile}>
-        {this._automationElement()}
-      </NoSpec>
-    )
-  }
-
-  _checkSpecFile = () => {
-    if (this.props.util.hasSpecFile()) {
-      this.forceUpdate()
-    }
-  }
-
-  _noAutomation () {
-    return (
-      <NoAutomation
-        browsers={this.props.config.browsers}
-        onLaunchBrowser={(browser) => this.props.eventManager.launchBrowser(browser)}
-      />
-    )
-  }
-
-  _automationDisconnected () {
-    return <AutomationDisconnected onReload={this.props.eventManager.launchBrowser} />
-  }
-}
-
-Container.defaultProps = {
-  eventManager,
-  util,
-}
-
-Container.propTypes = {
-  config: PropTypes.object.isRequired,
-  state: PropTypes.instanceOf(State),
-}
-
-export { automationElementId }
-
-export default Container
diff --git a/packages/runner/src/errors/automation-disconnected.jsx b/packages/runner/src/errors/automation-disconnected.jsx
deleted file mode 100644
index 016e453588..0000000000
--- a/packages/runner/src/errors/automation-disconnected.jsx
+++ /dev/null
@@ -1,19 +0,0 @@
-import React from 'react'
-
-export default ({ onReload }) => (
-  <div className='runner automation-failure'>
-    <div className='automation-message automation-disconnected'>
-      <p>Whoops, the Cypress extension has disconnected.</p>
-      <p className='muted'>Cypress cannot run tests without this extension.</p>
-      <button onClick={onReload}>
-        <i className='fas fa-sync-alt'></i> Reload the Browser
-      </button>
-      <div className='helper-line'>
-        <a href='https://on.cypress.io/launching-browsers' target='_blank'>
-          <i className='fas fa-question-circle'></i>
-          Why am I seeing this message?
-        </a>
-      </div>
-    </div>
-  </div>
-)
diff --git a/packages/runner/src/errors/no-automation.jsx b/packages/runner/src/errors/no-automation.jsx
deleted file mode 100644
index fc2e555880..0000000000
--- a/packages/runner/src/errors/no-automation.jsx
+++ /dev/null
@@ -1,61 +0,0 @@
-import _ from 'lodash'
-import React from 'react'
-import { BrowserIcon, Dropdown } from '@packages/ui-components'
-
-const displayName = (name) => _.capitalize(name)
-
-const noBrowsers = () => (
-  <div>
-    <p className='muted'>
-      <small>
-        We couldn't find any supported browsers capable of running Cypress on your machine.
-      </small>
-    </p>
-    <a href='https://www.google.com/chrome/browser/desktop' className='btn btn-primary btn-lg' target='_blank' rel='noopener noreferrer'>
-      <i className='fas fa-chrome'></i>
-      Download Chrome
-    </a>
-  </div>
-)
-
-const browser = (browser) => (
-  <span>
-    <BrowserIcon browserName={browser.displayName} />
-    <span>Run {displayName(browser.displayName)} {browser.majorVersion}</span>
-  </span>
-)
-
-const browserPicker = (browsers, onLaunchBrowser) => {
-  const chosenBrowser = _.find(browsers, { default: true }) || browsers[0]
-  const otherBrowsers = _(browsers)
-  .without(chosenBrowser)
-  .map((browser) => _.extend({}, browser, { key: browser.name + browser.version }))
-  .value()
-
-  return (
-    <div>
-      <p className='muted'>This browser was not launched through Cypress. Tests cannot run.</p>
-      <Dropdown
-        chosen={chosenBrowser}
-        others={otherBrowsers}
-        onSelect={onLaunchBrowser}
-        renderItem={browser}
-        keyProperty='key'
-      />
-    </div>
-  )
-}
-
-export default ({ browsers, onLaunchBrowser }) => (
-  <div className='runner automation-failure'>
-    <div className='automation-message'>
-      <p>Whoops, we can't run your tests.</p>
-      {browsers.length ? browserPicker(browsers, onLaunchBrowser) : noBrowsers()}
-      <div className='helper-line'>
-        <a className='helper-docs-link' href='https://on.cypress.io/launching-browsers' target='_blank'>
-          <i className='fas fa-question-circle'></i> Why am I seeing this message?
-        </a>
-      </div>
-    </div>
-  </div>
-)
diff --git a/packages/runner/src/errors/no-spec.jsx b/packages/runner/src/errors/no-spec.jsx
index ad96861b50..f4d3d7d624 100644
--- a/packages/runner/src/errors/no-spec.jsx
+++ b/packages/runner/src/errors/no-spec.jsx
@@ -1,5 +1,5 @@
 import React, { Component } from 'react'
-import eventManager from '../lib/event-manager'
+import { eventManager } from '@packages/runner-shared'
 
 class NoSpec extends Component {
   componentDidMount () {
diff --git a/packages/runner/src/errors/script-error.jsx b/packages/runner/src/errors/script-error.jsx
deleted file mode 100644
index 0928814525..0000000000
--- a/packages/runner/src/errors/script-error.jsx
+++ /dev/null
@@ -1,23 +0,0 @@
-import { observer } from 'mobx-react'
-import React from 'react'
-const ansiToHtml = require('ansi-to-html')
-
-const convert = new ansiToHtml({
-  fg: '#000',
-  bg: '#fff',
-  newline: false,
-  escapeXML: true,
-  stream: false,
-})
-const ScriptError = observer(({ error }) => {
-  if (!error) return null
-
-  const errorHTML = convert.toHtml(error.error)
-
-  return (
-    <pre className='script-error' dangerouslySetInnerHTML={{ __html: errorHTML }}>
-    </pre>
-  )
-})
-
-export default ScriptError
diff --git a/packages/runner/src/header/header.jsx b/packages/runner/src/header/header.jsx
deleted file mode 100644
index f65d212f4d..0000000000
--- a/packages/runner/src/header/header.jsx
+++ /dev/null
@@ -1,175 +0,0 @@
-import cs from 'classnames'
-
-import { action, computed, observable } from 'mobx'
-import { observer } from 'mobx-react'
-import React, { Component, createRef } from 'react'
-import Tooltip from '@cypress/react-tooltip'
-import { $ } from '@packages/driver'
-
-import { configFileFormatted } from '../lib/config-file-formatted'
-import SelectorPlayground from '../selector-playground/selector-playground'
-import selectorPlaygroundModel from '../selector-playground/selector-playground-model'
-import Studio from '../studio/studio'
-import studioRecorder from '../studio/studio-recorder'
-import eventManager from '../lib/event-manager'
-
-@observer
-export default class Header extends Component {
-  @observable showingViewportMenu = false
-  @observable urlInput = ''
-  urlInputRef = createRef()
-
-  render () {
-    const { state, config } = this.props
-
-    return (
-      <header
-        ref='header'
-        className={cs({
-          'showing-selector-playground': selectorPlaygroundModel.isOpen,
-          'showing-studio': studioRecorder.isOpen,
-        })}
-      >
-        <div className='sel-url-wrap'>
-          <Tooltip
-            title='Open Selector Playground'
-            visible={selectorPlaygroundModel.isOpen || studioRecorder.isOpen ? false : null}
-            wrapperClassName='selector-playground-toggle-tooltip-wrapper'
-            className='cy-tooltip'
-          >
-            <button
-              aria-label='Open Selector Playground'
-              className='header-button selector-playground-toggle'
-              onClick={this._togglePlaygroundOpen}
-              disabled={state.isLoading || state.isRunning || studioRecorder.isOpen}
-            >
-              <i aria-hidden="true" className='fas fa-crosshairs' />
-            </button>
-          </Tooltip>
-          <div className={cs('menu-cover', { 'menu-cover-display': this._studioNeedsUrl })} />
-          <form
-            className={cs('url-container', {
-              'loading': state.isLoadingUrl,
-              'highlighted': state.highlightUrl,
-              'menu-open': this._studioNeedsUrl,
-            })}
-            onSubmit={this._visitUrlInput}
-          >
-            <input
-              ref={this.urlInputRef}
-              type='text'
-              className={cs('url', { 'input-active': this._studioNeedsUrl })}
-              value={this._studioNeedsUrl ? this.urlInput : state.url}
-              readOnly={!this._studioNeedsUrl}
-              onChange={this._onUrlInput}
-              onClick={this._openUrl}
-            />
-            <div className='popup-menu url-menu'>
-              <p><strong>Please enter a valid URL to visit.</strong></p>
-              <div className='menu-buttons'>
-                <button type='button' className='btn-cancel' onClick={this._cancelStudio}>Cancel</button>
-                <button type='submit' className='btn-submit' disabled={!this.urlInput}>Go <i className='fas fa-arrow-right' /></button>
-              </div>
-            </div>
-            <span className='loading-container'>
-              ...loading <i className='fas fa-spinner fa-pulse' />
-            </span>
-          </form>
-        </div>
-        <ul className='menu'>
-          <li className={cs('viewport-info', { 'menu-open': this.showingViewportMenu })}>
-            <button onClick={this._toggleViewportMenu}>
-              {state.width} <span className='the-x'>x</span> {state.height} <span className='viewport-scale'>({state.displayScale}%)</span>
-              <i className='fas fa-fw fa-info-circle' />
-            </button>
-            <div className='popup-menu viewport-menu'>
-              <p>The <strong>viewport</strong> determines the width and height of your application. By default the viewport will be <strong>{state.defaults.width}px</strong> by <strong>{state.defaults.height}px</strong> unless specified by a <code>cy.viewport</code> command.</p>
-              <p>Additionally you can override the default viewport dimensions by specifying these values in your {configFileFormatted(config.configFile)}.</p>
-              <pre>{/* eslint-disable indent */}
-                {`{
-  "viewportWidth": ${state.defaults.width},
-  "viewportHeight": ${state.defaults.height}
-}`}
-              </pre>{/* eslint-enable indent */}
-              <p>
-                <a href='https://on.cypress.io/viewport' target='_blank'>
-                  <i className='fas fa-info-circle' />
-                  Read more about viewport here.
-                </a>
-              </p>
-            </div>
-          </li>
-        </ul>
-        <SelectorPlayground model={selectorPlaygroundModel} />
-        <Studio model={studioRecorder} hasUrl={!!state.url} />
-      </header>
-    )
-  }
-
-  @action componentDidMount () {
-    this.previousSelectorPlaygroundOpen = selectorPlaygroundModel.isOpen
-    this.previousRecorderIsOpen = studioRecorder.isOpen
-
-    this.urlInput = this.props.config.baseUrl ? `${this.props.config.baseUrl}/` : ''
-  }
-
-  componentDidUpdate () {
-    if (selectorPlaygroundModel.isOpen !== this.previousSelectorPlaygroundOpen) {
-      this._updateWindowDimensions()
-      this.previousSelectorPlaygroundOpen = selectorPlaygroundModel.isOpen
-    }
-
-    if (studioRecorder.isOpen !== this.previousRecorderIsOpen) {
-      this._updateWindowDimensions()
-      this.previousRecorderIsOpen = studioRecorder.isOpen
-    }
-
-    if (this._studioNeedsUrl) {
-      this.urlInputRef.current.focus()
-    }
-  }
-
-  _updateWindowDimensions = () => {
-    this.props.state.updateWindowDimensions({
-      headerHeight: $(this.refs.header).outerHeight(),
-    })
-  }
-
-  _togglePlaygroundOpen = () => {
-    selectorPlaygroundModel.toggleOpen()
-  }
-
-  _openUrl = () => {
-    if (this._studioNeedsUrl) return
-
-    window.open(this.props.state.url)
-  }
-
-  @computed get _studioNeedsUrl () {
-    return studioRecorder.needsUrl && !this.props.state.url
-  }
-
-  @action _onUrlInput = (e) => {
-    if (!this._studioNeedsUrl) return
-
-    this.urlInput = e.target.value
-  }
-
-  @action _visitUrlInput = (e) => {
-    e.preventDefault()
-
-    if (!this._studioNeedsUrl) return
-
-    studioRecorder.visitUrl(this.urlInput)
-
-    this.urlInput = ''
-  }
-
-  _cancelStudio = () => {
-    eventManager.emit('studio:cancel')
-  }
-
-  @action _toggleViewportMenu = () => {
-    this.showingViewportMenu = !this.showingViewportMenu
-  }
-}
diff --git a/packages/runner/src/iframe/blank-contents.js b/packages/runner/src/iframe/blank-contents.js
deleted file mode 100644
index 970e717fef..0000000000
--- a/packages/runner/src/iframe/blank-contents.js
+++ /dev/null
@@ -1,99 +0,0 @@
-export default () => {
-  return `
-    <style>
-      body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,button,textarea,p,blockquote,th,td{margin:0;padding:0;}table{border-collapse:collapse;border-spacing:0;}fieldset,img,a img{border:none;}address,caption,cite,code,dfn,em,strong,th,var,optgroup{font-style:inherit;font-weight:inherit;}del,ins{text-decoration:none;}li{list-style:none;}caption,th{text-align:left;}h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}q:before,q:after{content:'';}abbr,acronym{border:0;font-variant:normal;}sup{vertical-align:baseline;}sub{vertical-align:baseline;}legend{color:#000;}
-
-      * {
-        box-sizing: border-box;
-      }
-
-      body {
-        color: #333;
-        font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
-        font-size: 14px;
-        line-height: 1.4;
-        padding: 20px;
-        width: 100%;
-        height: 100%;
-      }
-
-      .container {
-        background-color: #EEE;
-        border-radius: 6px;
-        padding: 30px 15px;
-        text-align: center;
-      }
-
-      svg {
-        display: inline-block;
-        stroke-width: 0;
-        stroke: currentColor;
-        fill: currentColor;
-        margin: 20px 0 10px;
-        width: 62px;
-      }
-
-      p {
-        font-size: 21px;
-        font-weight: 200;
-        line-height: 1.4;
-        margin-bottom: 15px;
-      }
-
-      kbd {
-        background-color: #777;
-        border-radius: 3px;
-        box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.25);
-        color: #fff;
-        display: inline-block;
-        font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
-        font-size: 90%;
-        padding: 2px 4px;
-      }
-
-      a {
-        color: #FFF;
-        text-decoration: none;
-      }
-
-      a:hover,
-      a:focus,
-      a:active {
-        text-decoration: underline;
-      }
-
-      ul {
-        background-color: #DDD;
-        border-radius: 10px;
-        text-align: left;
-        margin: 0 auto 10px;
-        max-width: 220px;
-        padding: 20px 20px 20px 40px;
-      }
-
-      li {
-        list-style: decimal;
-        list-style-position: outside;
-        margin: 4px 0;
-      }
-    </style>
-
-    <div class='container'>
-      <svg viewBox="0 0 30 32">
-        <path d="M25.143 17.714v8.571q0 0.464-0.339 0.804t-0.804 0.339h-6.857v-6.857h-4.571v6.857h-6.857q-0.464 0-0.804-0.339t-0.339-0.804v-8.571q0-0.018 0.009-0.054t0.009-0.054l10.268-8.464 10.268 8.464q0.018 0.036 0.018 0.107zM29.125 16.482l-1.107 1.321q-0.143 0.161-0.375 0.196h-0.054q-0.232 0-0.375-0.125l-12.357-10.304-12.357 10.304q-0.214 0.143-0.429 0.125-0.232-0.036-0.375-0.196l-1.107-1.321q-0.143-0.179-0.125-0.42t0.196-0.384l12.839-10.696q0.571-0.464 1.357-0.464t1.357 0.464l4.357 3.643v-3.482q0-0.25 0.161-0.411t0.411-0.161h3.429q0.25 0 0.411 0.161t0.161 0.411v7.286l3.911 3.25q0.179 0.143 0.196 0.384t-0.125 0.42z"></path>
-      </svg>
-      <p>This is the default blank page.</p>
-      <p>To test your web application:</p>
-      <ul>
-        <li>Start your app's server</li>
-        <li>
-          <kbd>
-            <a href='https://on.cypress.io/visit' target='_blank'>cy.visit()</a>
-          </kbd>
-          your app
-        </li>
-        <li>Begin writing tests</li>
-      </ul>
-    </div>
-  `
-}
diff --git a/packages/runner/src/iframe/iframes.jsx b/packages/runner/src/iframe/iframes.jsx
index e6a97bf74c..ab0a334c34 100644
--- a/packages/runner/src/iframe/iframes.jsx
+++ b/packages/runner/src/iframe/iframes.jsx
@@ -3,15 +3,16 @@ import { action, autorun } from 'mobx'
 import { observer } from 'mobx-react'
 import React, { Component } from 'react'
 import { $ } from '@packages/driver'
+import {
+  SnapshotControls,
+  ScriptError,
+  IframeModel,
+  selectorPlaygroundModel,
+  AutIframe,
+  logger,
+  studioRecorder,
+} from '@packages/runner-shared'
 
-import AutIframe from './aut-iframe'
-import ScriptError from '../errors/script-error'
-import SnapshotControls from './snapshot-controls'
-
-import IframeModel from './iframe-model'
-import logger from '../lib/logger'
-import selectorPlaygroundModel from '../selector-playground/selector-playground-model'
-import studioRecorder from '../studio/studio-recorder'
 import util from '../lib/util'
 
 @observer
@@ -102,7 +103,6 @@ export default class Iframes extends Component {
 
     this.iframeModel = new IframeModel({
       state: this.props.state,
-      removeHeadStyles: this.autIframe.removeHeadStyles,
       restoreDom: this.autIframe.restoreDom,
       highlightEl: this.autIframe.highlightEl,
       detachDom: this.autIframe.detachDom,
@@ -122,7 +122,13 @@ export default class Iframes extends Component {
   }
 
   @action _setScriptError = (err) => {
-    this.props.state.scriptError = err
+    if (err && 'error' in err) {
+      this.props.state.scriptError = err.error
+    }
+
+    if (!err) {
+      this.props.state.scriptError = null
+    }
   }
 
   _run = (config) => {
diff --git a/packages/runner/src/iframe/visit-failure.js b/packages/runner/src/iframe/visit-failure.js
deleted file mode 100644
index 896c105e61..0000000000
--- a/packages/runner/src/iframe/visit-failure.js
+++ /dev/null
@@ -1,86 +0,0 @@
-export default (props) => {
-  const { status, statusText, contentType } = props
-
-  const getContentType = () => {
-    if (!contentType) {
-      return ''
-    }
-
-    return `(${contentType})`
-  }
-
-  const getStatus = () => {
-    if (!status) {
-      return ''
-    }
-
-    return `<p>${status} - ${statusText} ${getContentType()}</p>`
-  }
-
-  return `
-    <style>
-      body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,button,textarea,p,blockquote,th,td{margin:0;padding:0;}table{border-collapse:collapse;border-spacing:0;}fieldset,img,a img{border:none;}address,caption,cite,code,dfn,em,strong,th,var,optgroup{font-style:inherit;font-weight:inherit;}del,ins{text-decoration:none;}li{list-style:none;}caption,th{text-align:left;}h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}q:before,q:after{content:'';}abbr,acronym{border:0;font-variant:normal;}sup{vertical-align:baseline;}sub{vertical-align:baseline;}legend{color:#000;}
-
-      * {
-        box-sizing: border-box;
-      }
-
-      body {
-        color: #333;
-        font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
-        font-size: 14px;
-        line-height: 1.4;
-        padding: 20px;
-        width: 100%;
-        height: 100%;
-      }
-
-      .container {
-        background: #fcf8e3;
-        border-radius: 6px;
-        padding: 48px 60px;
-        text-align: center;
-      }
-
-      svg {
-        display: inline-block;
-        fill: currentColor;
-        margin: 20px 0 10px;
-        stroke-width: 0;
-        stroke: currentColor;
-        width: 62px;
-      }
-
-      p {
-        font-size: 21px;
-        font-weight: 200;
-        line-height: 1.4;
-        margin-bottom: 15px;
-      }
-
-      a {
-        color: #476fc9;
-        font-weight: bold;
-        text-decoration: none;
-      }
-
-      a:hover,
-      a:focus,
-      a:active {
-        color: #2c4d97;
-        text-decoration: underline;
-      }
-    </style>
-
-    <div class="container">
-      <svg viewBox="0 0 32 30">
-        <path d="M18.286 24.554v-3.393q0-0.25-0.17-0.42t-0.402-0.17h-3.429q-0.232 0-0.402 0.17t-0.17 0.42v3.393q0 0.25 0.17 0.42t0.402 0.17h3.429q0.232 0 0.402-0.17t0.17-0.42zM18.25 17.875l0.321-8.196q0-0.214-0.179-0.339-0.232-0.196-0.429-0.196h-3.929q-0.196 0-0.429 0.196-0.179 0.125-0.179 0.375l0.304 8.161q0 0.179 0.179 0.295t0.429 0.116h3.304q0.25 0 0.42-0.116t0.188-0.295zM18 1.196l13.714 25.143q0.625 1.125-0.036 2.25-0.304 0.518-0.83 0.821t-1.134 0.304h-27.429q-0.607 0-1.134-0.304t-0.83-0.821q-0.661-1.125-0.036-2.25l13.714-25.143q0.304-0.554 0.839-0.875t1.161-0.321 1.161 0.321 0.839 0.875z"></path>
-      </svg>
-      <p>Sorry, we could not load:</p>
-      <p>
-        <a href="${props.url}" target="_blank" rel="noopener noreferrer">${props.url}</a>
-      </p>
-      ${getStatus()}
-    </div>
-  `
-}
diff --git a/packages/runner/src/lib/automation.js b/packages/runner/src/lib/automation.js
deleted file mode 100644
index 52302df3d4..0000000000
--- a/packages/runner/src/lib/automation.js
+++ /dev/null
@@ -1,6 +0,0 @@
-export default {
-  CONNECTING: 'CONNECTING',
-  MISSING: 'MISSING',
-  CONNECTED: 'CONNECTED',
-  DISCONNECTED: 'DISCONNECTED',
-}
diff --git a/packages/runner/src/lib/config-file-formatted.jsx b/packages/runner/src/lib/config-file-formatted.jsx
deleted file mode 100644
index 4f6bccb6d9..0000000000
--- a/packages/runner/src/lib/config-file-formatted.jsx
+++ /dev/null
@@ -1,18 +0,0 @@
-import React from 'react'
-import { isUndefined } from 'lodash'
-
-const configFileFormatted = (configFile) => {
-  if (configFile === false) {
-    return <><code>cypress.json</code> file (currently disabled by <code>--config-file false</code>)</>
-  }
-
-  if (isUndefined(configFile) || configFile === 'cypress.json') {
-    return <><code>cypress.json</code> file</>
-  }
-
-  return <>custom config file <code>{configFile}</code></>
-}
-
-export {
-  configFileFormatted,
-}
diff --git a/packages/runner/src/lib/logger.js b/packages/runner/src/lib/logger.js
deleted file mode 100644
index a52ee1cacc..0000000000
--- a/packages/runner/src/lib/logger.js
+++ /dev/null
@@ -1,120 +0,0 @@
-/* eslint-disable no-console */
-
-import _ from 'lodash'
-
-export default {
-  log (...args) {
-    console.log(...args)
-  },
-
-  logError (...args) {
-    console.error(...args)
-  },
-
-  clearLog () {
-    if (console.clear) console.clear()
-  },
-
-  logFormatted (consoleProps) {
-    if (_.isEmpty(consoleProps)) return
-
-    this._logValues(consoleProps)
-    this._logGroups(consoleProps)
-    this._logTable(consoleProps)
-  },
-
-  _logValues (consoleProps) {
-    const formattedLog = this._formatted(_.omit(consoleProps, 'groups', 'table'))
-
-    _.each(formattedLog, (value, key) => {
-      // don't log empty strings
-      // _.trim([]) returns '' but we want to log empty arrays, so account for that
-      if (_.trim(value) === '' && !_.isArray(value)) return
-
-      this.log(`%c${key}`, 'font-weight: bold', value)
-    })
-  },
-
-  _formatted (consoleProps) {
-    const maxKeyLength = this._getMaxKeyLength(consoleProps)
-
-    return _.reduce(consoleProps, (memo, value, key) => {
-      const append = ': '
-
-      key = _.chain(key + append).capitalize().padEnd(maxKeyLength + append.length, ' ').value()
-      memo[key] = value
-
-      return memo
-    }, {})
-  },
-
-  _getMaxKeyLength (obj) {
-    const lengths = _(obj).keys().map('length').value()
-
-    return Math.max(...lengths)
-  },
-
-  _logGroups (consoleProps) {
-    const groups = this._getGroups(consoleProps)
-
-    _.each(groups, (group) => {
-      console.groupCollapsed(group.name)
-      _.each(group.items, (value, key) => {
-        if (group.label === false) {
-          this.log(value)
-        } else {
-          this.log(`%c${key}`, 'color: blue', value)
-        }
-      })
-
-      console.groupEnd()
-    })
-  },
-
-  _getGroups (consoleProps) {
-    const groups = _.result(consoleProps, 'groups')
-
-    if (!groups) return
-
-    return _.map(groups, (group) => {
-      group.items = this._formatted(group.items)
-
-      return group
-    })
-  },
-
-  _logTable (consoleProps) {
-    if (isMultiEntryTable(consoleProps.table)) {
-      _.each(
-        _.sortBy(consoleProps.table, (val, key) => key),
-        (table) => {
-          return this._logTable({ table })
-        },
-      )
-
-      return
-    }
-
-    const table = this._getTable(consoleProps)
-
-    if (!table) return
-
-    if (_.isArray(table)) {
-      console.table(table)
-    } else {
-      console.groupCollapsed(table.name)
-      console.table(table.data, table.columns)
-      console.groupEnd()
-    }
-  },
-
-  _getTable (consoleProps) {
-    const table = _.result(consoleProps, 'table')
-
-    if (!table) return
-
-    return table
-  },
-}
-
-const isMultiEntryTable = (table) => !_.isFunction(table) && !_.some(_.keys(table).map(isNaN).filter(Boolean), true)
diff --git a/packages/runner/src/lib/state.js b/packages/runner/src/lib/state.js
index 0d23a91081..46424b0321 100644
--- a/packages/runner/src/lib/state.js
+++ b/packages/runner/src/lib/state.js
@@ -1,5 +1,5 @@
 import { action, computed, observable } from 'mobx'
-import automation from './automation'
+import { automation } from '@packages/runner-shared'
 
 const _defaults = {
   messageTitle: null,
diff --git a/packages/runner/src/main.jsx b/packages/runner/src/main.jsx
index 8cd6fbc627..24ceb65c82 100644
--- a/packages/runner/src/main.jsx
+++ b/packages/runner/src/main.jsx
@@ -3,8 +3,11 @@ import React from 'react'
 import { render } from 'react-dom'
 import { utils as driverUtils } from '@packages/driver'
 
+import App from './app/app'
+import NoSpec from './errors/no-spec'
 import State from './lib/state'
-import Container from './app/container'
+import { Container, eventManager } from '@packages/runner-shared'
+import util from './lib/util'
 
 configure({ enforceActions: 'always' })
 
@@ -22,7 +25,19 @@ const Runner = {
 
       state.updateDimensions(config.viewportWidth, config.viewportHeight)
 
-      render(<Container config={config} state={state} />, el)
+      const container = (
+        <Container
+          config={config}
+          runner='e2e'
+          state={state}
+          App={App}
+          NoSpec={NoSpec}
+          hasSpecFile={util.hasSpecFile}
+          eventManager={eventManager}
+        />
+      )
+
+      render(container, el)
     })()
   },
 }
diff --git a/packages/runner/src/message/message.jsx b/packages/runner/src/message/message.jsx
deleted file mode 100644
index f317059956..0000000000
--- a/packages/runner/src/message/message.jsx
+++ /dev/null
@@ -1,36 +0,0 @@
-import cs from 'classnames'
-import { observer } from 'mobx-react'
-import React, { forwardRef } from 'react'
-
-export default observer(forwardRef(({ state }, ref) => {
-  if (!state.messageTitle) return null
-
-  function controls () {
-    if (!state.messageControls) return null
-
-    return (
-      <div className='message-controls'>
-        {state.messageControls}
-      </div>
-    )
-  }
-
-  return (
-    <div
-      ref={ref}
-      className={cs(
-        'message-container',
-        `message-${state.messageStyles.state}`,
-        `message-type-${state.messageType}`,
-        { 'message-has-description': !!state.messageDescription },
-      )}
-      style={state.messageStyles.styles}
-    >
-      <div className='message'>
-        <span className='title'>{state.messageTitle}</span>
-        <span className='description'>{state.messageDescription}</span>
-      </div>
-      {controls()}
-    </div>
-  )
-}))
diff --git a/packages/runner/src/selector-playground/highlight.jsx b/packages/runner/src/selector-playground/highlight.jsx
deleted file mode 100644
index be4b10b44a..0000000000
--- a/packages/runner/src/selector-playground/highlight.jsx
+++ /dev/null
@@ -1,37 +0,0 @@
-import _ from 'lodash'
-import React from 'react'
-import { render, unmountComponentAtNode } from 'react-dom'
-import Tooltip from '@cypress/react-tooltip'
-
-const Highlight = ({ selector, appendTo, styles, showTooltip = true }) => {
-  return (
-    <div>
-      {_.map(styles, (style, i) => {
-        // indicates that tooltip should change if one of these props change
-        const updateCue = _.values(_.pick(style, 'width', 'height', 'top', 'left', 'transform')).join()
-
-        return (
-          <Tooltip
-            key={i}
-            title={selector}
-            visible={showTooltip}
-            placement='top-start'
-            appendTo={appendTo}
-            updateCue={updateCue}
-          >
-            <div className='highlight' style={style} />
-          </Tooltip>
-        )
-      })}
-    </div>
-  )
-}
-
-function renderHighlight (container, props) {
-  render(<Highlight {...props} />, container)
-}
-
-export default {
-  render: renderHighlight,
-  unmount: unmountComponentAtNode,
-}
diff --git a/packages/runner/src/selector-playground/selector-playground-model.js b/packages/runner/src/selector-playground/selector-playground-model.js
deleted file mode 100644
index 107d9e6ef6..0000000000
--- a/packages/runner/src/selector-playground/selector-playground-model.js
+++ /dev/null
@@ -1,80 +0,0 @@
-import { action, computed, observable } from 'mobx'
-
-const methods = ['get', 'contains']
-
-class SelectorPlaygroundModel {
-  methods = methods
-
-  @observable getSelector = 'body'
-  @observable containsSelector = 'Hello, World'
-  @observable isOpen = false
-  @observable isEnabled = false
-  @observable isShowingHighlight = false
-  @observable isValid = true
-  @observable numElements = 0
-  @observable method = methods[0]
-
-  @computed get selector () {
-    return this.method === 'get' ? this.getSelector : this.containsSelector
-  }
-
-  @computed get infoHelp () {
-    if (!this.isValid) {
-      return 'Invalid selector'
-    }
-
-    return this.numElements === 1 ? '1 matched element' : `${this.numElements} matched elements`
-  }
-
-  @action toggleEnabled () {
-    this.setEnabled(!this.isEnabled)
-  }
-
-  @action setEnabled (isEnabled) {
-    this.isEnabled = isEnabled
-
-    if (!this.isEnabled) {
-      this.isShowingHighlight = false
-    }
-  }
-
-  @action toggleOpen () {
-    this.setOpen(!this.isOpen)
-  }
-
-  @action setOpen (isOpen) {
-    this.isOpen = isOpen
-
-    this.setEnabled(this.isOpen)
-  }
-
-  @action setShowingHighlight (isShowingHighlight) {
-    this.isShowingHighlight = isShowingHighlight
-  }
-
-  @action setSelector (selector) {
-    if (this.method === 'get') {
-      this.getSelector = selector
-    } else {
-      this.containsSelector = selector
-    }
-  }
-
-  @action setNumElements (numElements) {
-    this.numElements = numElements
-  }
-
-  @action setValidity (isValid) {
-    this.isValid = isValid
-  }
-
-  @action setMethod (method) {
-    this.method = method
-  }
-
-  @action resetMethod () {
-    this.method = methods[0]
-  }
-}
-
-export default new SelectorPlaygroundModel()
diff --git a/packages/runner/src/selector-playground/selector-playground.jsx b/packages/runner/src/selector-playground/selector-playground.jsx
deleted file mode 100644
index dae9fb1de8..0000000000
--- a/packages/runner/src/selector-playground/selector-playground.jsx
+++ /dev/null
@@ -1,237 +0,0 @@
-import _ from 'lodash'
-import cs from 'classnames'
-import { action, observable } from 'mobx'
-import { observer } from 'mobx-react'
-import React, { Component } from 'react'
-import Tooltip from '@cypress/react-tooltip'
-
-import eventManager from '../lib/event-manager'
-
-const defaultCopyText = 'Copy to clipboard'
-const defaultPrintText = 'Print to console'
-
-// mouseleave fires when entering a child element, so make sure we're
-// actually leaving the button and not just hovering over a child
-const fixMouseOut = (fn, getTarget) => (e) => {
-  if (
-    !e.relatedTarget
-    || e.relatedTarget.parentNode === getTarget()
-    || e.relatedTarget === getTarget()
-  ) return
-
-  fn(e)
-}
-
-@observer
-class SelectorPlayground extends Component {
-  @observable copyText = defaultCopyText
-  @observable printText = defaultPrintText
-  @observable showingMethodPicker = false
-
-  render () {
-    const { model } = this.props
-    const selectorText = `cy.${model.method}('${model.selector}')`
-
-    return (
-      <div className={cs('header-popup selector-playground', `method-${model.method}`, {
-        'no-elements': !model.numElements,
-        'invalid-selector': !model.isValid,
-      })}>
-        <div className='selector'>
-          <Tooltip
-            title='Click an element to see a suggested selector'
-            className='cy-tooltip'
-          >
-            <button
-              className={`highlight-toggle ${model.isEnabled ? 'active' : ''}`}
-              onClick={this._toggleEnablingSelectorPlayground}>
-              <span className='fa-stack'>
-                <i className='far fa-square fa-stack-1x'></i>
-                <i className='fas fa-mouse-pointer fa-stack-1x'></i>
-              </span>
-            </button>
-          </Tooltip>
-          <div
-            className='wrap'
-            onMouseOver={this._setHighlight(true)}
-          >
-            {this._methodSelector()}
-            <span>(</span>
-            <span>{'\''}</span>
-            <div className='selector-input'>
-              <input
-                ref={(node) => this._input = node}
-                name={`${model.isEnabled}` /* fixes issue with not resizing when opening/closing selector playground */}
-                value={model.selector}
-                onChange={this._updateSelector}
-                onFocus={this._setHighlight(true)}
-              />
-            </div>
-            <span>{'\''}</span>
-            <span>)</span>
-            <input ref='copyText' className='copy-backer' value={selectorText} readOnly />
-            <Tooltip title={model.infoHelp || ''} className='cy-tooltip'>
-              <span className='info num-elements'>
-                {model.isValid ?
-                  model.numElements :
-                  <i className='fas fa-exclamation-triangle'></i>
-                }
-              </span>
-            </Tooltip>
-          </div>
-          <Tooltip title={this.copyText || ''} updateCue={`${selectorText}${this.copyText}`} className='cy-tooltip'>
-            <button
-              ref={(node) => this._copyButton = node}
-              className='copy-to-clipboard'
-              onClick={this._copyToClipboard}
-              disabled={!model.numElements || !model.isValid}
-              onMouseOut={fixMouseOut(this._resetCopyText, () => this._copyButton)}
-            >
-              <i className='far fa-copy' />
-            </button>
-          </Tooltip>
-          <Tooltip title={this.printText || ''} updateCue={`${selectorText}${this.printText}`} className='cy-tooltip'>
-            <button
-              ref={(node) => this._printButton = node}
-              className='print-to-console'
-              onClick={this._printToConsole}
-              disabled={!model.numElements || !model.isValid}
-              onMouseOut={fixMouseOut(this._resetPrintText, () => this._printButton)}
-            >
-              <i className='fas fa-terminal' />
-            </button>
-          </Tooltip>
-        </div>
-        <a className='selector-info' href='https://on.cypress.io/selector-playground' target="_blank">
-          <i className='fas fa-question-circle'></i>{' '}
-          Learn more
-        </a>
-        <button className='close' onClick={this._togglePlaygroundOpen}>x</button>
-      </div>
-    )
-  }
-
-  componentDidMount () {
-    this._previousIsEnabled = this.props.model.isEnabled
-    this._previousMethod = this.props.model.method
-
-    document.body.addEventListener('click', this._onOutsideClick, false)
-  }
-
-  componentDidUpdate () {
-    if (
-      (this.props.model.isEnabled !== this._previousIsEnabled)
-      || (this.props.model.method !== this._previousMethod)
-    ) {
-      if (this.props.model.isEnabled) {
-        this._focusAndSelectInputText()
-      }
-
-      this._previousIsEnabled = this.props.model.isEnabled
-      this._previousMethod = this.props.model.method
-    }
-  }
-
-  componentWillUnmount () {
-    document.body.removeEventListener('click', this._onOutsideClick)
-  }
-
-  _methodSelector () {
-    const { model } = this.props
-    const methods = _.filter(model.methods, (method) => method !== model.method)
-
-    return (
-      <span className={cs('method', {
-        'is-showing': this.showingMethodPicker,
-      })}>
-        <button onClick={this._toggleMethodPicker}>
-          <i className='fas fa-caret-down'></i>{' '}
-          cy.{model.method}
-        </button>
-        <div className='method-picker'>
-          {_.map(methods, (method) => (
-            <div key={method} onClick={() => this._setMethod(method)}>
-              cy.{method}
-            </div>
-          ))}
-        </div>
-      </span>
-    )
-  }
-
-  _focusAndSelectInputText () {
-    this._input.focus()
-    this._input.select()
-  }
-
-  _onOutsideClick = () => {
-    this._setShowingMethodPicker(false)
-  }
-
-  _toggleMethodPicker = () => {
-    this._setShowingMethodPicker(!this.showingMethodPicker)
-  }
-
-  @action _setShowingMethodPicker (isShowing) {
-    this.showingMethodPicker = isShowing
-  }
-
-  @action _setMethod (method) {
-    if (method !== this.props.model.method) {
-      this.props.model.setMethod(method)
-    }
-  }
-
-  _setHighlight = (isShowing) => () => {
-    this.props.model.setShowingHighlight(isShowing)
-  }
-
-  _copyToClipboard = () => {
-    try {
-      this.refs.copyText.select()
-      const successful = document.execCommand('copy')
-
-      this._setCopyText(successful ? 'Copied!' : 'Oops, unable to copy')
-    } catch (err) {
-      this._setCopyText('Oops, unable to copy')
-    }
-  }
-
-  @action _setCopyText (text) {
-    this.copyText = text
-  }
-
-  _resetCopyText = () => {
-    this._setCopyText(defaultCopyText)
-  }
-
-  _printToConsole = () => {
-    eventManager.emit('print:selector:elements:to:console')
-    this._setPrintText('Printed!')
-  }
-
-  @action _setPrintText (text) {
-    this.printText = text
-  }
-
-  _resetPrintText = () => {
-    this._setPrintText(defaultPrintText)
-  }
-
-  _toggleEnablingSelectorPlayground = () => {
-    this.props.model.toggleEnabled()
-  }
-
-  _togglePlaygroundOpen = () => {
-    this.props.model.toggleOpen()
-  }
-
-  _updateSelector = (e) => {
-    const { model } = this.props
-
-    model.setSelector(e.target.value)
-    model.setShowingHighlight(true)
-  }
-}
-
-export default SelectorPlayground
diff --git a/packages/web-config/node-jsdom-setup.ts b/packages/web-config/node-jsdom-setup.ts
index 7f20ef0721..59e1065d90 100644
--- a/packages/web-config/node-jsdom-setup.ts
+++ b/packages/web-config/node-jsdom-setup.ts
@@ -111,6 +111,10 @@ export const register = ({
         return args[0]
       }
 
+      if (args[0].endsWith('.scss')) {
+        return args[0]
+      }
+
       const ret = _load.apply(this, browserPkg)
 
       return ret
diff --git a/packages/web-config/webpack.config.base.ts b/packages/web-config/webpack.config.base.ts
index 51486df217..d202c3908a 100644
--- a/packages/web-config/webpack.config.base.ts
+++ b/packages/web-config/webpack.config.base.ts
@@ -55,7 +55,7 @@ const stats = {
   timings: true,
 }
 
-function makeSassLoaders ({ modules }): RuleSetRule {
+function makeSassLoaders ({ modules }: { modules: boolean }): RuleSetRule {
   const exclude = [/node_modules/]
 
   if (!modules) exclude.push(/\.modules?\.s[ac]ss$/i)