egucciar · August 4, 2023 13:22 · michaelw85 · Nov 6, 2019 · rrdlpl · Jan 7, 2020
diff --git a/README.md b/README.md
diff --git a/shadowCommands.js b/shadowCommands.js
 const Promise = require('bluebird');

 import { merge } from 'lodash';
 import { waitsFor, catchRejection } from './waitsfor';
 import { smartlog } from './smartlog';
 import { should, ensureChainerExists } from './shadowShould';
 import { shadowSelect as _shadowSelect } from './shadowSelect';
 import $ from 'jquery';

 /**
 * 
 * ## About
 * 
 * Cypress does not have native support for `shadowDom`.
 * This module gives us the ability to run similar commands in shadow DOM.
 * These commands are not as fully developed as the native ones,
 * but resemble native Cypress commands in usage.
 * 
 * > Only use these commands on elements *within* a `shadowRoot`,
 * not on elements which may have a `shadowRoot`.
 * 
 * What to Expect
 * * Commands should feel familiar as Cypress ones and behave in similar ways
 * * There is automatic retrying for certain commands (e.g. `shadowGet` and `shadowShould`)
 * * Non-Dom results can be yielded into regular Cypress commands.
 * For example:
 * 
 ```js
 cy.shadowGet('some-shadow-element')
  .then($el => $el.text())
  .should('match', /*.?/g); // no need to build non-DOM interactors!
 ```
 * 
 * The main differences are
 * * Limited API use / less supported features
 * * Retrying is on a per command (not per chain) basis (except for `shadowGet`,
 * which does support retrying upcoming assertions)
 * * No extra visibility/attachment/covered/disabled checks on `click` and `trigger`
 * * Potentially others...TBD
 * 
 ## API
 * 
 * 
 * @module shadowDom
 */

 /**
 * Register shadow commands on the `cy` namespace, 
 * such as `shadowGet`, `shadowShould`, etc.
 */
 function registerShadowCommands() {
  const OPTIONAL_SUBECT = { prevSubject: 'optional' };
  const PREV_SUBJECT = { prevSubject: true };


  Cypress.Commands.add('shadowGet', OPTIONAL_SUBECT, shadowGet);

  Cypress.Commands.add('shadowFind', PREV_SUBJECT, shadowFind);

  Cypress.Commands.add('shadowEq', PREV_SUBJECT, shadowEq);

  Cypress.Commands.add('shadowContains', PREV_SUBJECT, shadowContains);

  Cypress.Commands.add('shadowShould', PREV_SUBJECT, shadowShould);

  Cypress.Commands.add('shadowClick', PREV_SUBJECT, shadowClick);

  Cypress.Commands.add('shadowSelect', PREV_SUBJECT, shadowSelect);

  Cypress.Commands.add('shadowTrigger', PREV_SUBJECT, shadowTrigger);
 }

 /**
 * **Retryable / Async**
 * 
 * * deeply searches DOM for all elements which have a `shadowRoot`
 * * queries (with jquery) each `shadowRoot` with provided selector
 * * Returns all matching results
 * * Subject is optional
 * 
 * @param {string} selector jquery selector used to find matching elements
 * @param {object} [options] the options to modify behaviour of the command
 * @param {number} [options.timeout] number of ms to retry the query until 
 * marking the command as failed. Defaults to 4s or the `defaultCommandTimeout`
 * in cypress.config.
 * @example
 ### Syntax

 ```js
 .shadowGet(selector)
 .shadowGet(selector, options)
 ```

 ### Usage

 ```js
 // searches entire DOM
 cy.shadowGet('custom-el-in-shadow')

 // searches only within container-el
 cy.get('container-el')
  .shadowGet('custom-el-in-shadow')

 // waits up to 30s (resolve immediately when found)
 cy.shadowGet('custom-el-in-shadow', { timeout: 30000 })

 ```
 */
 function shadowGet(subject, selector, passedOptions = {}) {
  smartlog.log('[shadowGet] arguments', subject, selector);

  const options = _addElemTimeoutMsg(selector, passedOptions);
  // this._timeout = options.timeout || Cypress.config('defaultCommandTimeout') || 4000;

  // setup log to start spinner off
  const log = Cypress.log({
    message: selector,
    verify: true
  });

  let foundElements;

  const getElements = () => waitsFor(() => {
    const win = cy.state('window');
    foundElements = _queryShadowChildren(subject ? subject[0] : win.document.body, selector);
    return foundElements.length > 0;
  }, options).then(() => {
    smartlog.log('[shadowGet] found', foundElements);
    // setting found $el on log to mimic cypress logging
    log.$el = foundElements;
    return $(foundElements);
  })
    .catch((err) => {
      // catching and rethrowing this way =>
      // error message applied to current log
      Cypress.utils.throwErr(err, {
        onFail: log
      })
    });
  const resolveElements = function () {
    cy.clearTimeout('shadowGet');
    return Promise["try"](getElements).then(function ($el) {
      if (options.verify === false) {
        return $el;
      }
      return cy.verifyUpcomingAssertions($el, options, {
        onRetry: resolveElements
      });
    });
  };

  return resolveElements();
 }

 /**
 * **Retryable / Async**
 * 
 * * must be chained from another command (e.g. `shadowGet` or `get`)
 * * queries (via jquery) the yielded element and the yielded element's `shadowRoot` for matches
 * * **Only** searches within the `shadowRoot` of the yielded element (as well as just the regular DOM children)
 * * **Note** it is a **shallow** search within the yielded elements shadowRoot. It will **not**
 * do a deep search through shadowRoots for the matching element. For deep search, use `shadowGet`
 * 
 * > You may wonder why a shallow search is needed. That's because in shadowDom
 * > Unique selectors like `id`s can be repeated. Sometimes we just want to search
 * > in the immediate root without worrying about coliding with things further down
 * > the DOM tree.
 * 
 * @param {string} selector jquery selector used to find matching elements
 * @param {object} [options] the options to modify behaviour of the command
 * @param {number} [options.timeout] number of ms to retry the query until 
 * marking the command as failed. Defaults to 4s or the `defaultCommandTimeout`
 * in cypress.config.
 * @example
 ### Syntax

 ```js
 .shadowFind(selector)
 .shadowFind(selector, options)
 ```

 ### Usage

 ```js
 // shadowFind queries against the subjects' children and shadowRoot
 cy.get('container-el')
  .shadowFind('button.action') 

 // shadowGet matches from all shadowRoots
 // shadowFind queries against the subjects' children and shadowRoot
 cy.shadowGet('custom-el-in-shadow')
  .shadowFind('button.action') // will query against the subject's children and shadowRoot
 ```
 */
 function shadowFind(subject, selector, passedOptions) {
  smartlog.log('[shadowFind] arguments', subject, selector);

  const options = _addElemTimeoutMsg(selector, passedOptions);

  // setup log to start spinner off
  const log = Cypress.log({
    message: selector
  });

  let foundElements;

  // returning promise => spinner
  return waitsFor(() => {
    foundElements = _queryChildrenAndShadowRoot(subject, selector);
    return foundElements.length > 0;
  }, options).then(() => {
    smartlog.log('[shadowFind] found', foundElements);
    // setting found $el on log to mimic cypress logging
    log.$el = foundElements;
    return foundElements;
  })
    .catch((err) => {
      // catching and rethrowing this way =>
      // error message applied to current log
      Cypress.utils.throwErr(err, {
        onFail: log
      })
    });
 }

 /**
 * **Retryable / Async**
 * (Up to 4s, timeout not customizable)
 * 
 * This Utility is most useful when needing to run 
 * assertions against shadowDom elements and it does so by leveraging `jquery-chai`. `Cypress` also does this, but it does not work in shadowDom.
 * * it accepts the `string` syntax like Cypress' `should`
 * * it does not accept the `function` syntax 
 * (but you can still use `should` with shadow elements as long as you run non `jquery-chai` assertions)
 * * This smooths over the issues with Cypress' `jquery-chai`,
 * which does explicit checks that are incompatible with shadowDom.
 * * It uses a clean version of jquery and chai to run assertions against shadowDom elements.
 * * In general, you can use `should` as long as you do not need to assert against the shadow DOM.
 * 
 * > **When should I use `shadowShould` and when should I use `should`?**
 * > 
 * > Use `shadowShould` whenever you need to run assertions
 *  against elements within the `shadowDom`.
 * > Lite DOM and regular DOM can be used with `should`.
 * > Also, any non-DOM values can be used with `should`. 
 * > You can do something like, 
 * >
 * >`.should(($el) => expect($el.text()).to.match(/.?/))`
 * > 
 * > Or even,
 * >
 * > `.then(($el) => $el.text()).should('match', /.?/))`.
 * >
 * > These are examples of taking non-DOM values from the shadowDom elements and using
 * > regular Cypress commands and assertions on them. 
 * 
 * @param {string} chainer the string
 * @param {any} value the value to be checked
 * @param {string} method the sub-chainer to check (see example)
 * 
 * @example
 ### Syntax

 ```js
 .shadowShould(chainers)
 .shadowShould(chainers, value)
 .shadowShould(chainers, method, value)
 ```

 ### Usage

 ```js
 cy.get('@dateLabel')
  .should('have.text', '2017-11-22');

 cy.get('@datepicker')
  .shadowFind('button[value="2017-11-22"]')
  .shadowShould('have.attr', 'tabindex', '0');
 ```

 */

 function shadowShould(subject, chainer, ...rest) {
  const message = _formatElementMessage(subject[0], chainer, ...rest);

  const log = Cypress.log({
    message: message,
    state: 'pending'
  });

  // allow jquery chai to throw an error if we pass a bad chainer
  ensureChainerExists(subject, chainer);

  return waitsFor(() => {
    try {
      should(subject, chainer, ...rest);
      return true;
    } catch (ex) {
      return false;
    }
  })
    .then(() => {
      assert(true, message);
      return subject;
    })
    .catch(() => {
      try {
        should(subject, chainer, ...rest);
      } catch (err) {
        Cypress.utils.throwErr(err, {
          onFail: log
        })
      }
    });
 }

 /**
 * **No-Retry / Sync**
 * 
 * Yields a subject at the index from a given subject.
 * 
 * For example, if this is chained from a `shadowGet` 
 * which yields multiple elements, `shadowEq` will return
 * the element at the specified index.
 * 
 * It will *not* retry and yields whatever is passed
 * into it synchronously.
 * 
 * @param {number} index specifies the index of 
 * the element to yield from the subject
 * 
 * @example
 ### Syntax

 ```js
 .shadowEq(selector)
 ```

 ### Usage

 ```js
 cy.get('container-el')
  .shadowFind('button.action') 
  .shadowEq(2)

 cy.shadowGet('custom-el-in-shadow')
  .shadowEq(4)
 ```
 */
 function shadowEq(subject, index) {
  Cypress.log({
    name: 'shadoweq',
    message: index,
  });

  // todo check into how cypress handles this situation
  if (subject[index] === undefined) {
    throw new Error('There is no subject at the specified index');
  }

  return subject[index];
 }

 /**
 * **No-Retry / Sync**
 * 
 * * Allows you to click on an element within a shadowRoot.
 * * Can be chained from `shadowGet`, `shadowFind`, or `shadowEq`
 * * Clicks on the first element (index 0) from the 
 * yielded elements of previous command
 * * Cypress' `click` does not work in shadowDom for multiple reasons
 * * Uses native or jquery .click functionality,
 * but does not do additional checks Cypress' click does 
 * such as checking the component is visible, 
 * not covered, and not disabled. 
 * * Would need to put in more work to ensure component clicks cannot pass 
 * through when the component is not in an actual interactive state.
 * @example
 ### Syntax

 ```js
 .shadowClick()
 ```

 ### Usage

 ```js
 cy.get('container-el')
  .shadowGet('custom-element-within-shadow-dom')
  .shadowFind('button.action')
  .shadowClick()
 ```
 */
 function shadowClick(subject, options) {
  Cypress.log({
    name: 'shadowclick'
  });
  // todo: retry until element is "clickable"
  if (subject[0].tagName === 'A') {
    // jQuery click doesn't work on Anchors
    // https://stackoverflow.com/questions/34174134/triggering-click-event-on-anchor-tag-doesnt-works
    subject[0].click()
  } else {
    subject.click();
  }
 }

 /**
 * **No-Retry / Sync**
 * 
 * * Allows you to select an option from a `select` element within a shadowRoot.
 * * Can be chained from `shadowGet`, `shadowFind`, or `shadowEq`
 * * Expects an actual `select` element to be the subject
 * * Selects the provided `option` from the first element (index 0) from the 
 * yielded elements of previous command
 * * Option can be by `value` or by `text`, but must be strictly equal
 * * Cypress' `select` does not work in shadowDom for multiple reasons
 * * Does not do additional checks Cypress' select does 
 * such as checking the component is visible, 
 * not covered, and not disabled. 
 * * Would need to put in more work to ensure component selects cannot pass 
 * through when the component is not in an actual interactive state.
 * 
 * 
 * @param {String|Number} option The option from the `select` to select,
 * by `value` or by `text`
 *  
 * @example
 ### Syntax

 ```js
 .shadowSelect(option)
 ```

 ### Usage

 ```js
  cy
    .shadowGet('upd-select[name="state"]')
    .shadowFind('select')
    .shadowSelect('AL'); // by value

  cy
    .shadowGet('upd-select[name="bedrooms"]')
    .shadowFind('select')
    .shadowSelect('3 Bedroooms'); // by text
 ``` 
 */
 function shadowSelect(subject, select, options) {

  Cypress.log({
    name: 'shadowselect',
    message: `'${select}' on ${subject[0].tagName}`,
  });

  return _shadowSelect(subject, select, options);
 }

 /**
 * **No Retry / Sync**
 * 
 * * allows to trigger an event similarly to how Cypress' `trigger` works. 
 * * This works with elements on the shadow DOM since they pose problems with 
 * almost all of Cypress' commands. 
 * * Currently only supports these events:
 *   * `keydown`
 *   * `keypress`
 *   * `keyup`
 *   * `change`
 *   * `input`
 * * Options can also be provided per event
 *   * `key` events supports keyboard event options i.e. `keyCode` or `bubbles`
 *   * `change` and `input` events support the `value` for the update
 * 
 * @param {string} event The event from the above list which will be triggered
 * @param {object|value} options Options which depend on the kind of event and 
 * modify the event's behaviour
 * 
 * @example
 ```js
 .shadowTrigger(event)
 .shadowTrigger(event, options)
 ```

 ### Usage

 ```js
 // Changing an input
 cy
  .shadowGet('upd-input[name="postalCode"]')
  .shadowFind('input')
  .shadowTrigger('input', '99511');

 // changing value of a custom element
 cy
  .shadowGet('upd-datepicker')
  .shadowTrigger('change', '2019-01-02');

 // triggering a key event
 cy.get('@datepicker')
  .shadowFind('button[aria-selected="true"]')
  .shadowTrigger('keydown', { keyCode: 39, bubbles: true });
 ```
 */
 function shadowTrigger(subject, event, options) {
  Cypress.log({
    name: 'shadowTrigger',
  });
  // todo: retry until element is "interactable"
  const createdEvent = _createEvent(event, options, subject[0]);
  console.log(createdEvent);
  if (!createdEvent) {
    throw new Error(`Event not supported by shadowTrigger: ${event}`);
  }
  subject[0].dispatchEvent(createdEvent);
  return subject;
 }

 /**
 * **No-Retry / Sync**
 * 
 * Convenience function to assert partial match between the `textContent` of
 * an element and the passed in value.
 * 
 * This does not work like `cy.contains`.
 * 
 * Literally just runs this assertion:
 * ```js
 *   expect(subject[0].textContent).to.contain(text)
 * ```
 * 
 * @param {string} text the text to match against
 * 
 * @example
 ```js
 .shadowContains(text)
 ```

 ### Usage

 ```js
  cy
    .shadowGet('some-custom-elem')
    .shadowContains('Should contain this text...')
 ``` 
 */
 function shadowContains(subject, text) {
  expect(subject[0].textContent).to.contain(text)
  return subject;
 }

 /* PRIVATE / INTERNAL */

 function _formatElementMessage(element, chainer, ...rest) {
  const elementText = element.tagName.toLowerCase(),
    id = element.id ? `#${element.id}` : '',
    chainerText = chainer.replace('.', ' '),
    check = rest.join(' ');
  return `expect **<${elementText}${id}>** to ${chainerText} **${check}**`;
 }

 function _isShadowElement(el) {
  return (
    el.shadowRoot &&
    el.shadowRoot.childNodes &&
    el.shadowRoot.childNodes.length > 0
  );
 }

 function _getAllShadowChildren(elems) {
  return elems.reduce((acc, el) => {
    acc.push(el);
    let nodesToReduce = [];
    // smartlog.log('[shadow] get for element', el);
    if (el.childNodes) {
      nodesToReduce = nodesToReduce.concat([...el.childNodes]);
    }
    if (el.shadowRoot) {
      nodesToReduce = nodesToReduce.concat([...el.shadowRoot.childNodes]);
    }
    if (el.tagName === 'SLOT') {
      // NOTE: `assignedNodes` are part of litedom, therefore will be in the childNodes
      // doing this here duplicates what we return
      // nodesToReduce = nodesToReduce.concat([...el.assignedNodes()])
    }
    return acc.concat(_getAllShadowChildren(nodesToReduce));
  }, [])
 }

 function _queryShadowChildren(node, query) {
  const shadowRoots = _getAllShadowChildren([node]).filter(_isShadowElement);

  smartlog.log('[shadowroots]', shadowRoots);
  const matchedEls = shadowRoots.reduce(
    (matched, el) => [...matched, ...$(el.shadowRoot).find(query)],
    []
  );

  smartlog.log('Matched els', matchedEls);

  return matchedEls;
 }

 function _queryChildrenAndShadowRoot(subject, selector) {
  let foundElements = [...subject.find(selector)];
  const shadowRoots = [...subject].map(s => s.shadowRoot).filter(root => root !== undefined);
  shadowRoots.forEach((root) => {
    foundElements = [...$(root).find(selector)].concat(foundElements);
  });
  return foundElements;
 }

 function _addElemTimeoutMsg(selector, opts) {
  return merge({}, opts, {
    message: `Expected to find element: '${selector}' but never found it.`,
  });
 }

 function _createEvent(event, options, element) {
  if (['keydown', 'keypress', 'keyup'].indexOf(event) !== -1) {
    // In Chromium/Electron, dispatchEvent with keyCode will be received as 0
    // this fixes that issue
    // https://stackoverflow.com/questions/10455626/keydown-simulation-in-chrome-fires-normally-but-not-the-correct-key/10520017#10520017
    const customEvent = document.createEvent('KeyboardEvent', options),
      { keyCode } = options;

    ['keyCode', 'which'].forEach(prop => {
      Object.defineProperty(customEvent, prop, {
        get: function () {
          return this.keyCodeVal;
        },
      });
    });

    if (customEvent.initKeyboardEvent) {
      customEvent.initKeyboardEvent(
        event,
        true,
        true,
        document.defaultView,
        false,
        false,
        false,
        false,
        keyCode,
        keyCode
      );
    } else {
      customEvent.initKeyEvent(
        event,
        true,
        true,
        document.defaultView,
        false,
        false,
        false,
        false,
        keyCode,
        0
      );
    }

    customEvent.keyCodeVal = keyCode;

    if (customEvent.keyCode !== keyCode) {
      throw new Error(
        `keyCode mismatch keyCode ${customEvent.keyCode} which ${
        customEvent.which
        }`
      );
    }

    return customEvent;
  }
  if (['change', 'input'].indexOf(event) !== -1) {
    element.value = options;
    const change = document.createEvent("HTMLEvents");
    change.initEvent(event, true, true);
    return change;
  }
 }

 export { registerShadowCommands };
diff --git a/shadowDom_spec.js b/shadowDom_spec.js
 import $ from 'jquery';

 const createShadowDom = (host, dom) => {
  const shadow = host.attachShadow({ mode: 'open' });
  shadow.innerHTML = dom;
 }

 const final = 5;

 const createOrderTest = (host, count) => {
  const elem = host.shadowRoot.querySelector('.order-test');
  count++;
  createShadowDom(elem, `<div class="order-test ${count}">`);
  if (count < final) {
    createOrderTest(elem, count);
  }
 }


 describe('shadowDom', () => {
  before(() => {
    cy.visit('/fixtures/index.html');
    cy.get('cypress-spec')
      .then($el => {
        createShadowDom($el.get(0), `
          <div id="test">Test Div
            <span>1</span>
            <span>2</span>
          </div>
          <select id="select">
           <option value="a">Option A</option>
           <option value="b">Option B</option>
          </select>
          <div class="order-test 0">
          </div>
          <div class="timeout-test">
          </div>   
        `)
        createOrderTest($el.get(0), 0);
      })
  })
  context('shadowCommands', () => {
    it('in general these commands work. this is good enough for now.', () => {
      cy.shadowGet('#test')
        .shadowFind('span')
        .shadowShould('have.length', 2)
        .shadowEq(1)
        .should($el => {
          assert($el, 'shadowGet is able to retrieve the shadow element');
          assert($el, 'shadowFind span is able to get the elements');
          assert($el, 'shadowShould was able to make the assertion');
        })
    });

    it('shadowGet returns elements in correct order', () => {
      [...Array(6)].forEach((_, i) => {
        cy.shadowGet('.order-test')
          .shadowEq(i)
          .shadowShould('have.class', i)
      })
    })
  });

  context('retryability', () => {
    it('retries the starter element until all chained commands pass', () => {
      let count = 0;

      // add another option into the select after 2 seconds
      // to ensure that the shadowGet will not resolve immediately
      // with the correct state
      cy.shadowGet('select option')
        .then($el => {
          setTimeout(() => {
            $el.parent().append('<option>');
          }, 2000);
        })

      // retries getting the elements until `should` passes
      // this allows us to pass only once the element state is correct
      // rather than fail immediately because it wasn't correct quickly enough
      cy.shadowGet('select option')
        .should((el) => {
          expect(el.length).to.be.above(2);
        })
    })
  })

  context('timeout', () => {
    it('actually waits until the timeout passes before failing the test', () => {
      cy.shadowGet('.timeout-test')
        .then($el => {
          setTimeout(() => {
            $el.append('<div class="pass-timeout-test">');
          }, 10000);
        })

      cy.shadowGet('.pass-timeout-test', { timeout: 30000})
    });
  })
 })
diff --git a/shadowSelect.js b/shadowSelect.js

 /** Code below modified from Cypress select source
 * 
 * https://github.com/cypress-io/cypress/blob/2b2b6d99a9f1bf232d9c7396b25390913d5f2b18/packages/driver/src/cy/commands/actions/select.coffee
 * 
 */

 import _ from 'lodash';
 import $ from 'jquery';

 const newLineRe = /\n/g;

 export function shadowSelect(subject, valueOrText, options = {}) {

  valueOrText = [].concat(valueOrText);

  function getOptions() {
    var optionEls, optionsObjects, uniqueValues, values;
    values = [];
    optionEls = [];
    optionsObjects = subject.find("option").map(function (index, el) {
      let optEl, trimmedText, value;
      value = el.value;
      optEl = $(el);
      if (valueOrText.indexOf(value) >= 0) {
        optionEls.push(optEl);
        values.push(value);
      }
      trimmedText = optEl.text().replace(newLineRe, "").trim();
      return {
        value: value,
        originalText: optEl.text(),
        text: trimmedText,
        $el: optEl
      };
    }).get();
    if (!values.length) {
      uniqueValues = _.chain(optionsObjects).map("value").uniq().value();
      _.each(optionsObjects, function (obj, index) {
        var ref;
        if (ref = obj.text, valueOrText.indexOf(ref) >= 0) {
          optionEls.push(obj.$el);
          return values.push(obj.value);
        }
      });
    }
    return {
      values: values,
      optionEls: optionEls,
      optionsObjects: optionsObjects
    };
  };
  var obj = getOptions();
  var optionEls, optionsObjects, values;
  if (obj == null) {
    obj = {};
  }
  values = obj.values, optionEls = obj.optionEls, optionsObjects = obj.optionsObjects;
  subject.val(values);
  var input = new Event("input", {
    bubbles: true,
    composed: true,
    cancelable: false
  });
  subject.get(0).dispatchEvent(input);
  var change = document.createEvent("HTMLEvents");
  change.initEvent("change", true, false);
  subject.get(0).dispatchEvent(change);

 }
diff --git a/shadowShould.js b/shadowShould.js
 import $ from 'jquery';
 import { get } from 'lodash';
 import chai, { expect } from 'chai';
 import chaijq from 'chai-jquery';

 // chai-jquery is overwritten by cypress and blows up with shadowdom
 // our should calls will not blow up on shadow dom because we
 // use chai jquery directly
 try {
  chai.use((...args) => chaijq(...args, $));
 } catch (ex) {
  console.log(ex);
 }

 export function should(subject, chainer, check, value) {
  const caller = expect(subject).to,
    expectation = get(caller, chainer);
  if (expectation) {
    expectation.call(caller, check, value);
  } else {
    Cypress.log(`Chainer not currently supported by .shadowShould: ${chainer}`);
  }
 }

 export function ensureChainerExists(subject, chainer) {
  const expectation = get(expect(subject).to, chainer);
 }
diff --git a/smartlog.js b/smartlog.js
 let debugging = false;

 const smartlog = {};

 Object.defineProperty(smartlog, 'log', {
  get: function() {
    return debugging ? console.log.bind(console) : () => {};
  },
 });

 function enableDebug() {
  debugging = true;
 }

 export { smartlog, enableDebug };
diff --git a/waitsfor.js b/waitsfor.js
 const WAIT_TIME = 3900; // 10ms less than cypress :)
 const RETRY_INTERVAL_TIME = 10;

 function catchRejection(done) {
  return function (err) {
    throw err;
  };
 }

 function waitsFor(f, options = {}) {
  var func = f, // this function returns true when promise is fufilled
    intervalTime = options.interval || RETRY_INTERVAL_TIME; // optional interval

  return new Promise(function (fufill, reject) {
    var interval = setInterval(function () {
      if (func()) {
        clearTimeout(timeout);
        clearInterval(interval);
        fufill();
      }
    }, intervalTime);

    var timeout = setTimeout(function () {
      clearInterval(interval);
      reject(
        new Error(`Timed out retrying: ${options.message || ''}`)
      );
    }, options.timeout || WAIT_TIME);
  });
 }

 export { waitsFor, catchRejection };
Param	Type	Description
selector	`string`	jquery selector used to find matching elements
[options]	`object`	the options to modify behaviour of the command
[options.timeout]	`number`	number of ms to retry the query until marking the command as failed. Defaults to 4s or the `defaultCommandTimeout` in cypress.config.
Param	Type	Description
chainer	`string`	the string
value	`any`	the value to be checked
method	`string`	the sub-chainer to check (see example)
Param	Type	Description
event	`string`	The event from the above list which will be triggered
options	`object` \| `value`	Options which depend on the kind of event and modify the event's behaviour
	const Promise = require('bluebird');

	import { merge } from 'lodash';
	import { waitsFor, catchRejection } from './waitsfor';
	import { smartlog } from './smartlog';
	import { should, ensureChainerExists } from './shadowShould';
	import { shadowSelect as _shadowSelect } from './shadowSelect';
	import $ from 'jquery';

	/**
	*
	* ## About
	*
	* Cypress does not have native support for `shadowDom`.
	* This module gives us the ability to run similar commands in shadow DOM.
	* These commands are not as fully developed as the native ones,
	* but resemble native Cypress commands in usage.
	*
	* > Only use these commands on elements within a `shadowRoot`,
	* not on elements which may have a `shadowRoot`.
	*
	* What to Expect
	* * Commands should feel familiar as Cypress ones and behave in similar ways
	* * There is automatic retrying for certain commands (e.g. `shadowGet` and `shadowShould`)
	* * Non-Dom results can be yielded into regular Cypress commands.
	* For example:
	*
	```js
	cy.shadowGet('some-shadow-element')
	.then($el => $el.text())
	.should('match', /*.?/g); // no need to build non-DOM interactors!
	```
	*
	* The main differences are
	* * Limited API use / less supported features
	* * Retrying is on a per command (not per chain) basis (except for `shadowGet`,
	* which does support retrying upcoming assertions)
	* * No extra visibility/attachment/covered/disabled checks on `click` and `trigger`
	* * Potentially others...TBD
	*
	## API
	*
	*
	* @module shadowDom
	*/

	/**
	* Register shadow commands on the `cy` namespace,
	* such as `shadowGet`, `shadowShould`, etc.
	*/
	function registerShadowCommands() {
	const OPTIONAL_SUBECT = { prevSubject: 'optional' };
	const PREV_SUBJECT = { prevSubject: true };


	Cypress.Commands.add('shadowGet', OPTIONAL_SUBECT, shadowGet);

	Cypress.Commands.add('shadowFind', PREV_SUBJECT, shadowFind);

	Cypress.Commands.add('shadowEq', PREV_SUBJECT, shadowEq);

	Cypress.Commands.add('shadowContains', PREV_SUBJECT, shadowContains);

	Cypress.Commands.add('shadowShould', PREV_SUBJECT, shadowShould);

	Cypress.Commands.add('shadowClick', PREV_SUBJECT, shadowClick);

	Cypress.Commands.add('shadowSelect', PREV_SUBJECT, shadowSelect);

	Cypress.Commands.add('shadowTrigger', PREV_SUBJECT, shadowTrigger);
	}

	/**
	* Retryable / Async
	*
	* * deeply searches DOM for all elements which have a `shadowRoot`
	* * queries (with jquery) each `shadowRoot` with provided selector
	* * Returns all matching results
	* * Subject is optional
	*
	* @param {string} selector jquery selector used to find matching elements
	* @param {object} [options] the options to modify behaviour of the command
	* @param {number} [options.timeout] number of ms to retry the query until
	* marking the command as failed. Defaults to 4s or the `defaultCommandTimeout`
	* in cypress.config.
	* @example
	### Syntax

	```js
	.shadowGet(selector)
	.shadowGet(selector, options)
	```

	### Usage

	```js
	// searches entire DOM
	cy.shadowGet('custom-el-in-shadow')

	// searches only within container-el
	cy.get('container-el')
	.shadowGet('custom-el-in-shadow')

	// waits up to 30s (resolve immediately when found)
	cy.shadowGet('custom-el-in-shadow', { timeout: 30000 })

	```
	*/
	function shadowGet(subject, selector, passedOptions = {}) {
	smartlog.log('[shadowGet] arguments', subject, selector);

	const options = _addElemTimeoutMsg(selector, passedOptions);
	// this._timeout = options.timeout \|\| Cypress.config('defaultCommandTimeout') \|\| 4000;

	// setup log to start spinner off
	const log = Cypress.log({
	message: selector,
	verify: true
	});

	let foundElements;

	const getElements = () => waitsFor(() => {
	const win = cy.state('window');
	foundElements = _queryShadowChildren(subject ? subject[0] : win.document.body, selector);
	return foundElements.length > 0;
	}, options).then(() => {
	smartlog.log('[shadowGet] found', foundElements);
	// setting found $el on log to mimic cypress logging
	log.$el = foundElements;
	return $(foundElements);
	})
	.catch((err) => {
	// catching and rethrowing this way =>
	// error message applied to current log
	Cypress.utils.throwErr(err, {
	onFail: log
	})
	});
	const resolveElements = function () {
	cy.clearTimeout('shadowGet');
	return Promise["try"](getElements).then(function ($el) {
	if (options.verify === false) {
	return $el;
	}
	return cy.verifyUpcomingAssertions($el, options, {
	onRetry: resolveElements
	});
	});
	};

	return resolveElements();
	}

	/**
	* Retryable / Async
	*
	* * must be chained from another command (e.g. `shadowGet` or `get`)
	* * queries (via jquery) the yielded element and the yielded element's `shadowRoot` for matches
	* * Only searches within the `shadowRoot` of the yielded element (as well as just the regular DOM children)
	* * Note it is a shallow search within the yielded elements shadowRoot. It will not
	* do a deep search through shadowRoots for the matching element. For deep search, use `shadowGet`
	*
	* > You may wonder why a shallow search is needed. That's because in shadowDom
	* > Unique selectors like `id`s can be repeated. Sometimes we just want to search
	* > in the immediate root without worrying about coliding with things further down
	* > the DOM tree.
	*
	* @param {string} selector jquery selector used to find matching elements
	* @param {object} [options] the options to modify behaviour of the command
	* @param {number} [options.timeout] number of ms to retry the query until
	* marking the command as failed. Defaults to 4s or the `defaultCommandTimeout`
	* in cypress.config.
	* @example
	### Syntax

	```js
	.shadowFind(selector)
	.shadowFind(selector, options)
	```

	### Usage

	```js
	// shadowFind queries against the subjects' children and shadowRoot
	cy.get('container-el')
	.shadowFind('button.action')

	// shadowGet matches from all shadowRoots
	// shadowFind queries against the subjects' children and shadowRoot
	cy.shadowGet('custom-el-in-shadow')
	.shadowFind('button.action') // will query against the subject's children and shadowRoot
	```
	*/
	function shadowFind(subject, selector, passedOptions) {
	smartlog.log('[shadowFind] arguments', subject, selector);

	const options = _addElemTimeoutMsg(selector, passedOptions);

	// setup log to start spinner off
	const log = Cypress.log({
	message: selector
	});

	let foundElements;

	// returning promise => spinner
	return waitsFor(() => {
	foundElements = _queryChildrenAndShadowRoot(subject, selector);
	return foundElements.length > 0;
	}, options).then(() => {
	smartlog.log('[shadowFind] found', foundElements);
	// setting found $el on log to mimic cypress logging
	log.$el = foundElements;
	return foundElements;
	})
	.catch((err) => {
	// catching and rethrowing this way =>
	// error message applied to current log
	Cypress.utils.throwErr(err, {
	onFail: log
	})
	});
	}

	/**
	* Retryable / Async
	* (Up to 4s, timeout not customizable)
	*
	* This Utility is most useful when needing to run
	* assertions against shadowDom elements and it does so by leveraging `jquery-chai`. `Cypress` also does this, but it does not work in shadowDom.
	* * it accepts the `string` syntax like Cypress' `should`
	* * it does not accept the `function` syntax
	* (but you can still use `should` with shadow elements as long as you run non `jquery-chai` assertions)
	* * This smooths over the issues with Cypress' `jquery-chai`,
	* which does explicit checks that are incompatible with shadowDom.
	* * It uses a clean version of jquery and chai to run assertions against shadowDom elements.
	* * In general, you can use `should` as long as you do not need to assert against the shadow DOM.
	*
	* > When should I use `shadowShould` and when should I use `should`?
	* >
	* > Use `shadowShould` whenever you need to run assertions
	* against elements within the `shadowDom`.
	* > Lite DOM and regular DOM can be used with `should`.
	* > Also, any non-DOM values can be used with `should`.
	* > You can do something like,
	* >
	* >`.should(($el) => expect($el.text()).to.match(/.?/))`
	* >
	* > Or even,
	* >
	* > `.then(($el) => $el.text()).should('match', /.?/))`.
	* >
	* > These are examples of taking non-DOM values from the shadowDom elements and using
	* > regular Cypress commands and assertions on them.
	*
	* @param {string} chainer the string
	* @param {any} value the value to be checked
	* @param {string} method the sub-chainer to check (see example)
	*
	* @example
	### Syntax

	```js
	.shadowShould(chainers)
	.shadowShould(chainers, value)
	.shadowShould(chainers, method, value)
	```

	### Usage

	```js
	cy.get('@dateLabel')
	.should('have.text', '2017-11-22');

	cy.get('@datepicker')
	.shadowFind('button[value="2017-11-22"]')
	.shadowShould('have.attr', 'tabindex', '0');
	```

	*/

	function shadowShould(subject, chainer, ...rest) {
	const message = _formatElementMessage(subject[0], chainer, ...rest);

	const log = Cypress.log({
	message: message,
	state: 'pending'
	});

	// allow jquery chai to throw an error if we pass a bad chainer
	ensureChainerExists(subject, chainer);

	return waitsFor(() => {
	try {
	should(subject, chainer, ...rest);
	return true;
	} catch (ex) {
	return false;
	}
	})
	.then(() => {
	assert(true, message);
	return subject;
	})
	.catch(() => {
	try {
	should(subject, chainer, ...rest);
	} catch (err) {
	Cypress.utils.throwErr(err, {
	onFail: log
	})
	}
	});
	}

	/**
	* No-Retry / Sync
	*
	* Yields a subject at the index from a given subject.
	*
	* For example, if this is chained from a `shadowGet`
	* which yields multiple elements, `shadowEq` will return
	* the element at the specified index.
	*
	* It will not retry and yields whatever is passed
	* into it synchronously.
	*
	* @param {number} index specifies the index of
	* the element to yield from the subject
	*
	* @example
	### Syntax

	```js
	.shadowEq(selector)
	```

	### Usage

	```js
	cy.get('container-el')
	.shadowFind('button.action')
	.shadowEq(2)

	cy.shadowGet('custom-el-in-shadow')
	.shadowEq(4)
	```
	*/
	function shadowEq(subject, index) {
	Cypress.log({
	name: 'shadoweq',
	message: index,
	});

	// todo check into how cypress handles this situation
	if (subject[index] === undefined) {
	throw new Error('There is no subject at the specified index');
	}

	return subject[index];
	}

	/**
	* No-Retry / Sync
	*
	* * Allows you to click on an element within a shadowRoot.
	* * Can be chained from `shadowGet`, `shadowFind`, or `shadowEq`
	* * Clicks on the first element (index 0) from the
	* yielded elements of previous command
	* * Cypress' `click` does not work in shadowDom for multiple reasons
	* * Uses native or jquery .click functionality,
	* but does not do additional checks Cypress' click does
	* such as checking the component is visible,
	* not covered, and not disabled.
	* * Would need to put in more work to ensure component clicks cannot pass
	* through when the component is not in an actual interactive state.
	* @example
	### Syntax

	```js
	.shadowClick()
	```

	### Usage

	```js
	cy.get('container-el')
	.shadowGet('custom-element-within-shadow-dom')
	.shadowFind('button.action')
	.shadowClick()
	```
	*/
	function shadowClick(subject, options) {
	Cypress.log({
	name: 'shadowclick'
	});
	// todo: retry until element is "clickable"
	if (subject[0].tagName === 'A') {
	// jQuery click doesn't work on Anchors
	// https://stackoverflow.com/questions/34174134/triggering-click-event-on-anchor-tag-doesnt-works
	subject[0].click()
	} else {
	subject.click();
	}
	}

	/**
	* No-Retry / Sync
	*
	* * Allows you to select an option from a `select` element within a shadowRoot.
	* * Can be chained from `shadowGet`, `shadowFind`, or `shadowEq`
	* * Expects an actual `select` element to be the subject
	* * Selects the provided `option` from the first element (index 0) from the
	* yielded elements of previous command
	* * Option can be by `value` or by `text`, but must be strictly equal
	* * Cypress' `select` does not work in shadowDom for multiple reasons
	* * Does not do additional checks Cypress' select does
	* such as checking the component is visible,
	* not covered, and not disabled.
	* * Would need to put in more work to ensure component selects cannot pass
	* through when the component is not in an actual interactive state.
	*
	*
	* @param {String\|Number} option The option from the `select` to select,
	* by `value` or by `text`
	*
	* @example
	### Syntax

	```js
	.shadowSelect(option)
	```

	### Usage

	```js
	cy
	.shadowGet('upd-select[name="state"]')
	.shadowFind('select')
	.shadowSelect('AL'); // by value

	cy
	.shadowGet('upd-select[name="bedrooms"]')
	.shadowFind('select')
	.shadowSelect('3 Bedroooms'); // by text
	```
	*/
	function shadowSelect(subject, select, options) {

	Cypress.log({
	name: 'shadowselect',
	message: `'${select}' on ${subject[0].tagName}`,
	});

	return _shadowSelect(subject, select, options);
	}

	/**
	* No Retry / Sync
	*
	* * allows to trigger an event similarly to how Cypress' `trigger` works.
	* * This works with elements on the shadow DOM since they pose problems with
	* almost all of Cypress' commands.
	* * Currently only supports these events:
	* * `keydown`
	* * `keypress`
	* * `keyup`
	* * `change`
	* * `input`
	* * Options can also be provided per event
	* * `key` events supports keyboard event options i.e. `keyCode` or `bubbles`
	* * `change` and `input` events support the `value` for the update
	*
	* @param {string} event The event from the above list which will be triggered
	* @param {object\|value} options Options which depend on the kind of event and
	* modify the event's behaviour
	*
	* @example
	```js
	.shadowTrigger(event)
	.shadowTrigger(event, options)
	```

	### Usage

	```js
	// Changing an input
	cy
	.shadowGet('upd-input[name="postalCode"]')
	.shadowFind('input')
	.shadowTrigger('input', '99511');

	// changing value of a custom element
	cy
	.shadowGet('upd-datepicker')
	.shadowTrigger('change', '2019-01-02');

	// triggering a key event
	cy.get('@datepicker')
	.shadowFind('button[aria-selected="true"]')
	.shadowTrigger('keydown', { keyCode: 39, bubbles: true });
	```
	*/
	function shadowTrigger(subject, event, options) {
	Cypress.log({
	name: 'shadowTrigger',
	});
	// todo: retry until element is "interactable"
	const createdEvent = _createEvent(event, options, subject[0]);
	console.log(createdEvent);
	if (!createdEvent) {
	throw new Error(`Event not supported by shadowTrigger: ${event}`);
	}
	subject[0].dispatchEvent(createdEvent);
	return subject;
	}

	/**
	* No-Retry / Sync
	*
	* Convenience function to assert partial match between the `textContent` of
	* an element and the passed in value.
	*
	* This does not work like `cy.contains`.
	*
	* Literally just runs this assertion:
	* ```js
	* expect(subject[0].textContent).to.contain(text)
	* ```
	*
	* @param {string} text the text to match against
	*
	* @example
	```js
	.shadowContains(text)
	```

	### Usage

	```js
	cy
	.shadowGet('some-custom-elem')
	.shadowContains('Should contain this text...')
	```
	*/
	function shadowContains(subject, text) {
	expect(subject[0].textContent).to.contain(text)
	return subject;
	}

	/* PRIVATE / INTERNAL */

	function _formatElementMessage(element, chainer, ...rest) {
	const elementText = element.tagName.toLowerCase(),
	id = element.id ? `#${element.id}` : '',
	chainerText = chainer.replace('.', ' '),
	check = rest.join(' ');
	return `expect <${elementText}${id}> to ${chainerText} ${check}`;
	}

	function _isShadowElement(el) {
	return (
	el.shadowRoot &&
	el.shadowRoot.childNodes &&
	el.shadowRoot.childNodes.length > 0
	);
	}

	function _getAllShadowChildren(elems) {
	return elems.reduce((acc, el) => {
	acc.push(el);
	let nodesToReduce = [];
	// smartlog.log('[shadow] get for element', el);
	if (el.childNodes) {
	nodesToReduce = nodesToReduce.concat([...el.childNodes]);
	}
	if (el.shadowRoot) {
	nodesToReduce = nodesToReduce.concat([...el.shadowRoot.childNodes]);
	}
	if (el.tagName === 'SLOT') {
	// NOTE: `assignedNodes` are part of litedom, therefore will be in the childNodes
	// doing this here duplicates what we return
	// nodesToReduce = nodesToReduce.concat([...el.assignedNodes()])
	}
	return acc.concat(_getAllShadowChildren(nodesToReduce));
	}, [])
	}

	function _queryShadowChildren(node, query) {
	const shadowRoots = _getAllShadowChildren([node]).filter(_isShadowElement);

	smartlog.log('[shadowroots]', shadowRoots);
	const matchedEls = shadowRoots.reduce(
	(matched, el) => [...matched, ...$(el.shadowRoot).find(query)],
	[]
	);

	smartlog.log('Matched els', matchedEls);

	return matchedEls;
	}

	function _queryChildrenAndShadowRoot(subject, selector) {
	let foundElements = [...subject.find(selector)];
	const shadowRoots = [...subject].map(s => s.shadowRoot).filter(root => root !== undefined);
	shadowRoots.forEach((root) => {
	foundElements = [...$(root).find(selector)].concat(foundElements);
	});
	return foundElements;
	}

	function _addElemTimeoutMsg(selector, opts) {
	return merge({}, opts, {
	message: `Expected to find element: '${selector}' but never found it.`,
	});
	}

	function _createEvent(event, options, element) {
	if (['keydown', 'keypress', 'keyup'].indexOf(event) !== -1) {
	// In Chromium/Electron, dispatchEvent with keyCode will be received as 0
	// this fixes that issue
	// https://stackoverflow.com/questions/10455626/keydown-simulation-in-chrome-fires-normally-but-not-the-correct-key/10520017#10520017
	const customEvent = document.createEvent('KeyboardEvent', options),
	{ keyCode } = options;

	['keyCode', 'which'].forEach(prop => {
	Object.defineProperty(customEvent, prop, {
	get: function () {
	return this.keyCodeVal;
	},
	});
	});

	if (customEvent.initKeyboardEvent) {
	customEvent.initKeyboardEvent(
	event,
	true,
	true,
	document.defaultView,
	false,
	false,
	false,
	false,
	keyCode,
	keyCode
	);
	} else {
	customEvent.initKeyEvent(
	event,
	true,
	true,
	document.defaultView,
	false,
	false,
	false,
	false,
	keyCode,
	0
	);
	}

	customEvent.keyCodeVal = keyCode;

	if (customEvent.keyCode !== keyCode) {
	throw new Error(
	`keyCode mismatch keyCode ${customEvent.keyCode} which ${
	customEvent.which
	}`
	);
	}

	return customEvent;
	}
	if (['change', 'input'].indexOf(event) !== -1) {
	element.value = options;
	const change = document.createEvent("HTMLEvents");
	change.initEvent(event, true, true);
	return change;
	}
	}

	export { registerShadowCommands };
	import $ from 'jquery';

	const createShadowDom = (host, dom) => {
	const shadow = host.attachShadow({ mode: 'open' });
	shadow.innerHTML = dom;
	}

	const final = 5;

	const createOrderTest = (host, count) => {
	const elem = host.shadowRoot.querySelector('.order-test');
	count++;
	createShadowDom(elem, `<div class="order-test ${count}">`);
	if (count < final) {
	createOrderTest(elem, count);
	}
	}


	describe('shadowDom', () => {
	before(() => {
	cy.visit('/fixtures/index.html');
	cy.get('cypress-spec')
	.then($el => {
	createShadowDom($el.get(0), `
	<div id="test">Test Div
	<span>1</span>
	<span>2</span>
	</div>
	<select id="select">
	<option value="a">Option A</option>
	<option value="b">Option B</option>
	</select>
	<div class="order-test 0">
	</div>
	<div class="timeout-test">
	</div>
	`)
	createOrderTest($el.get(0), 0);
	})
	})
	context('shadowCommands', () => {
	it('in general these commands work. this is good enough for now.', () => {
	cy.shadowGet('#test')
	.shadowFind('span')
	.shadowShould('have.length', 2)
	.shadowEq(1)
	.should($el => {
	assert($el, 'shadowGet is able to retrieve the shadow element');
	assert($el, 'shadowFind span is able to get the elements');
	assert($el, 'shadowShould was able to make the assertion');
	})
	});

	it('shadowGet returns elements in correct order', () => {
	[...Array(6)].forEach((_, i) => {
	cy.shadowGet('.order-test')
	.shadowEq(i)
	.shadowShould('have.class', i)
	})
	})
	});

	context('retryability', () => {
	it('retries the starter element until all chained commands pass', () => {
	let count = 0;

	// add another option into the select after 2 seconds
	// to ensure that the shadowGet will not resolve immediately
	// with the correct state
	cy.shadowGet('select option')
	.then($el => {
	setTimeout(() => {
	$el.parent().append('<option>');
	}, 2000);
	})

	// retries getting the elements until `should` passes
	// this allows us to pass only once the element state is correct
	// rather than fail immediately because it wasn't correct quickly enough
	cy.shadowGet('select option')
	.should((el) => {
	expect(el.length).to.be.above(2);
	})
	})
	})

	context('timeout', () => {
	it('actually waits until the timeout passes before failing the test', () => {
	cy.shadowGet('.timeout-test')
	.then($el => {
	setTimeout(() => {
	$el.append('<div class="pass-timeout-test">');
	}, 10000);
	})

	cy.shadowGet('.pass-timeout-test', { timeout: 30000})
	});
	})
	})

	/** Code below modified from Cypress select source
	*
	* https://github.com/cypress-io/cypress/blob/2b2b6d99a9f1bf232d9c7396b25390913d5f2b18/packages/driver/src/cy/commands/actions/select.coffee
	*
	*/

	import _ from 'lodash';
	import $ from 'jquery';

	const newLineRe = /\n/g;

	export function shadowSelect(subject, valueOrText, options = {}) {

	valueOrText = [].concat(valueOrText);

	function getOptions() {
	var optionEls, optionsObjects, uniqueValues, values;
	values = [];
	optionEls = [];
	optionsObjects = subject.find("option").map(function (index, el) {
	let optEl, trimmedText, value;
	value = el.value;
	optEl = $(el);
	if (valueOrText.indexOf(value) >= 0) {
	optionEls.push(optEl);
	values.push(value);
	}
	trimmedText = optEl.text().replace(newLineRe, "").trim();
	return {
	value: value,
	originalText: optEl.text(),
	text: trimmedText,
	$el: optEl
	};
	}).get();
	if (!values.length) {
	uniqueValues = _.chain(optionsObjects).map("value").uniq().value();
	_.each(optionsObjects, function (obj, index) {
	var ref;
	if (ref = obj.text, valueOrText.indexOf(ref) >= 0) {
	optionEls.push(obj.$el);
	return values.push(obj.value);
	}
	});
	}
	return {
	values: values,
	optionEls: optionEls,
	optionsObjects: optionsObjects
	};
	};
	var obj = getOptions();
	var optionEls, optionsObjects, values;
	if (obj == null) {
	obj = {};
	}
	values = obj.values, optionEls = obj.optionEls, optionsObjects = obj.optionsObjects;
	subject.val(values);
	var input = new Event("input", {
	bubbles: true,
	composed: true,
	cancelable: false
	});
	subject.get(0).dispatchEvent(input);
	var change = document.createEvent("HTMLEvents");
	change.initEvent("change", true, false);
	subject.get(0).dispatchEvent(change);

	}
	import $ from 'jquery';
	import { get } from 'lodash';
	import chai, { expect } from 'chai';
	import chaijq from 'chai-jquery';

	// chai-jquery is overwritten by cypress and blows up with shadowdom
	// our should calls will not blow up on shadow dom because we
	// use chai jquery directly
	try {
	chai.use((...args) => chaijq(...args, $));
	} catch (ex) {
	console.log(ex);
	}

	export function should(subject, chainer, check, value) {
	const caller = expect(subject).to,
	expectation = get(caller, chainer);
	if (expectation) {
	expectation.call(caller, check, value);
	} else {
	Cypress.log(`Chainer not currently supported by .shadowShould: ${chainer}`);
	}
	}

	export function ensureChainerExists(subject, chainer) {
	const expectation = get(expect(subject).to, chainer);
	}
	let debugging = false;

	const smartlog = {};

	Object.defineProperty(smartlog, 'log', {
	get: function() {
	return debugging ? console.log.bind(console) : () => {};
	},
	});

	function enableDebug() {
	debugging = true;
	}

	export { smartlog, enableDebug };
	const WAIT_TIME = 3900; // 10ms less than cypress :)
	const RETRY_INTERVAL_TIME = 10;

	function catchRejection(done) {
	return function (err) {
	throw err;
	};
	}

	function waitsFor(f, options = {}) {
	var func = f, // this function returns true when promise is fufilled
	intervalTime = options.interval \|\| RETRY_INTERVAL_TIME; // optional interval

	return new Promise(function (fufill, reject) {
	var interval = setInterval(function () {
	if (func()) {
	clearTimeout(timeout);
	clearInterval(interval);
	fufill();
	}
	}, intervalTime);

	var timeout = setTimeout(function () {
	clearInterval(interval);
	reject(
	new Error(`Timed out retrying: ${options.message \|\| ''}`)
	);
	}, options.timeout \|\| WAIT_TIME);
	});
	}

	export { waitsFor, catchRejection };