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How to use ensureListeningTo method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactDOMComponent.js

Source:ReactDOMComponent.js

...110      testElement.innerHTML = html;111      return testElement.innerHTML;112    };113  }114  function ensureListeningTo(rootContainerElement, registrationName) {115    var isDocumentOrFragment = rootContainerElement.nodeType === DOCUMENT_NODE || rootContainerElement.nodeType === DOCUMENT_FRAGMENT_NODE;116    var doc = isDocumentOrFragment ? rootContainerElement : rootContainerElement.ownerDocument;117    legacyListenToEvent(registrationName, doc);118  }119  function getOwnerDocumentFromRootContainer(rootContainerElement) {120    return rootContainerElement.nodeType === DOCUMENT_NODE ? rootContainerElement : rootContainerElement.ownerDocument;121  }122  function noop() {}123  function trapClickOnNonInteractiveElement(node) {124    // Mobile Safari does not fire properly bubble click events on125    // non-interactive elements, which means delegated click listeners do not126    // fire. The workaround for this bug involves attaching an empty click127    // listener on the target node.128    // http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html129    // Just set it using the onclick property so that we don't have to manage any130    // bookkeeping for it. Not sure if we need to clear it when the listener is131    // removed.132    // TODO: Only do this for the relevant Safaris maybe?133    node.onclick = noop;134  }135  function setInitialDOMProperties(tag, domElement, rootContainerElement, nextProps, isCustomComponentTag) {136    for (var propKey in nextProps) {137      if (!nextProps.hasOwnProperty(propKey)) {138        continue;139      }140      var nextProp = nextProps[propKey];141      if (propKey === STYLE) {142        {143          if (nextProp) {144            // Freeze the next style object so that we can assume it won't be145            // mutated. We have already warned for this in the past.146            Object.freeze(nextProp);147          }148        } // Relies on `updateStylesByID` not mutating `styleUpdates`.149        setValueForStyles(domElement, nextProp);150      } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {151        var nextHtml = nextProp ? nextProp[HTML$1] : undefined;152        if (nextHtml != null) {153          setInnerHTML(domElement, nextHtml);154        }155      } else if (propKey === CHILDREN) {156        if (typeof nextProp === 'string') {157          // Avoid setting initial textContent when the text is empty. In IE11 setting158          // textContent on a <textarea> will cause the placeholder to not159          // show within the <textarea> until it has been focused and blurred again.160          // https://github.com/facebook/react/issues/6731#issuecomment-254874553161          var canSetTextContent = tag !== 'textarea' || nextProp !== '';162          if (canSetTextContent) {163            setTextContent(domElement, nextProp);164          }165        } else if (typeof nextProp === 'number') {166          setTextContent(domElement, '' + nextProp);167        }168      } else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING) ; else if (propKey === AUTOFOCUS) ; else if (registrationNameModules.hasOwnProperty(propKey)) {169        if (nextProp != null) {170          if ( typeof nextProp !== 'function') {171            warnForInvalidEventListener(propKey, nextProp);172          }173          ensureListeningTo(rootContainerElement, propKey);174        }175      } else if (nextProp != null) {176        setValueForProperty(domElement, propKey, nextProp, isCustomComponentTag);177      }178    }179  }180  function updateDOMProperties(domElement, updatePayload, wasCustomComponentTag, isCustomComponentTag) {181    // TODO: Handle wasCustomComponentTag182    for (var i = 0; i < updatePayload.length; i += 2) {183      var propKey = updatePayload[i];184      var propValue = updatePayload[i + 1];185      if (propKey === STYLE) {186        setValueForStyles(domElement, propValue);187      } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {188        setInnerHTML(domElement, propValue);189      } else if (propKey === CHILDREN) {190        setTextContent(domElement, propValue);191      } else {192        setValueForProperty(domElement, propKey, propValue, isCustomComponentTag);193      }194    }195  }196  function createElement(type, props, rootContainerElement, parentNamespace) {197    var isCustomComponentTag; // We create tags in the namespace of their parent container, except HTML198    // tags get no namespace.199    var ownerDocument = getOwnerDocumentFromRootContainer(rootContainerElement);200    var domElement;201    var namespaceURI = parentNamespace;202    if (namespaceURI === HTML_NAMESPACE$1) {203      namespaceURI = getIntrinsicNamespace(type);204    }205    if (namespaceURI === HTML_NAMESPACE$1) {206      {207        isCustomComponentTag = isCustomComponent(type, props); // Should this check be gated by parent namespace? Not sure we want to208        // allow <SVG> or <mATH>.209        if (!isCustomComponentTag && type !== type.toLowerCase()) {210          error('<%s /> is using incorrect casing. ' + 'Use PascalCase for React components, ' + 'or lowercase for HTML elements.', type);211        }212      }213      if (type === 'script') {214        // Create the script via .innerHTML so its "parser-inserted" flag is215        // set to true and it does not execute216        var div = ownerDocument.createElement('div');217        div.innerHTML = '<script><' + '/script>'; // eslint-disable-line218        // This is guaranteed to yield a script element.219        var firstChild = div.firstChild;220        domElement = div.removeChild(firstChild);221      } else if (typeof props.is === 'string') {222        // $FlowIssue `createElement` should be updated for Web Components223        domElement = ownerDocument.createElement(type, {224          is: props.is225        });226      } else {227        // Separate else branch instead of using `props.is || undefined` above because of a Firefox bug.228        // See discussion in https://github.com/facebook/react/pull/6896229        // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240230        domElement = ownerDocument.createElement(type); // Normally attributes are assigned in `setInitialDOMProperties`, however the `multiple` and `size`231        // attributes on `select`s needs to be added before `option`s are inserted.232        // This prevents:233        // - a bug where the `select` does not scroll to the correct option because singular234        //  `select` elements automatically pick the first item #13222235        // - a bug where the `select` set the first item as selected despite the `size` attribute #14239236        // See https://github.com/facebook/react/issues/13222237        // and https://github.com/facebook/react/issues/14239238        if (type === 'select') {239          var node = domElement;240          if (props.multiple) {241            node.multiple = true;242          } else if (props.size) {243            // Setting a size greater than 1 causes a select to behave like `multiple=true`, where244            // it is possible that no option is selected.245            //246            // This is only necessary when a select in "single selection mode".247            node.size = props.size;248          }249        }250      }251    } else {252      domElement = ownerDocument.createElementNS(namespaceURI, type);253    }254    {255      if (namespaceURI === HTML_NAMESPACE$1) {256        if (!isCustomComponentTag && Object.prototype.toString.call(domElement) === '[object HTMLUnknownElement]' && !Object.prototype.hasOwnProperty.call(warnedUnknownTags, type)) {257          warnedUnknownTags[type] = true;258          error('The tag <%s> is unrecognized in this browser. ' + 'If you meant to render a React component, start its name with ' + 'an uppercase letter.', type);259        }260      }261    }262    return domElement;263  }264  function createTextNode(text, rootContainerElement) {265    return getOwnerDocumentFromRootContainer(rootContainerElement).createTextNode(text);266  }267  function setInitialProperties(domElement, tag, rawProps, rootContainerElement) {268    var isCustomComponentTag = isCustomComponent(tag, rawProps);269    {270      validatePropertiesInDevelopment(tag, rawProps);271    } // TODO: Make sure that we check isMounted before firing any of these events.272    var props;273    switch (tag) {274      case 'iframe':275      case 'object':276      case 'embed':277        trapBubbledEvent(TOP_LOAD, domElement);278        props = rawProps;279        break;280      case 'video':281      case 'audio':282        // Create listener for each media event283        for (var i = 0; i < mediaEventTypes.length; i++) {284          trapBubbledEvent(mediaEventTypes[i], domElement);285        }286        props = rawProps;287        break;288      case 'source':289        trapBubbledEvent(TOP_ERROR, domElement);290        props = rawProps;291        break;292      case 'img':293      case 'image':294      case 'link':295        trapBubbledEvent(TOP_ERROR, domElement);296        trapBubbledEvent(TOP_LOAD, domElement);297        props = rawProps;298        break;299      case 'form':300        trapBubbledEvent(TOP_RESET, domElement);301        trapBubbledEvent(TOP_SUBMIT, domElement);302        props = rawProps;303        break;304      case 'details':305        trapBubbledEvent(TOP_TOGGLE, domElement);306        props = rawProps;307        break;308      case 'input':309        initWrapperState(domElement, rawProps);310        props = getHostProps(domElement, rawProps);311        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening312        // to onChange. Even if there is no listener.313        ensureListeningTo(rootContainerElement, 'onChange');314        break;315      case 'option':316        validateProps(domElement, rawProps);317        props = getHostProps$1(domElement, rawProps);318        break;319      case 'select':320        initWrapperState$1(domElement, rawProps);321        props = getHostProps$2(domElement, rawProps);322        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening323        // to onChange. Even if there is no listener.324        ensureListeningTo(rootContainerElement, 'onChange');325        break;326      case 'textarea':327        initWrapperState$2(domElement, rawProps);328        props = getHostProps$3(domElement, rawProps);329        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening330        // to onChange. Even if there is no listener.331        ensureListeningTo(rootContainerElement, 'onChange');332        break;333      default:334        props = rawProps;335    }336    assertValidProps(tag, props);337    setInitialDOMProperties(tag, domElement, rootContainerElement, props, isCustomComponentTag);338    switch (tag) {339      case 'input':340        // TODO: Make sure we check if this is still unmounted or do any clean341        // up necessary since we never stop tracking anymore.342        track(domElement);343        postMountWrapper(domElement, rawProps, false);344        break;345      case 'textarea':346        // TODO: Make sure we check if this is still unmounted or do any clean347        // up necessary since we never stop tracking anymore.348        track(domElement);349        postMountWrapper$3(domElement);350        break;351      case 'option':352        postMountWrapper$1(domElement, rawProps);353        break;354      case 'select':355        postMountWrapper$2(domElement, rawProps);356        break;357      default:358        if (typeof props.onClick === 'function') {359          // TODO: This cast may not be sound for SVG, MathML or custom elements.360          trapClickOnNonInteractiveElement(domElement);361        }362        break;363    }364  } // Calculate the diff between the two objects.365  function diffProperties(domElement, tag, lastRawProps, nextRawProps, rootContainerElement) {366    {367      validatePropertiesInDevelopment(tag, nextRawProps);368    }369    var updatePayload = null;370    var lastProps;371    var nextProps;372    switch (tag) {373      case 'input':374        lastProps = getHostProps(domElement, lastRawProps);375        nextProps = getHostProps(domElement, nextRawProps);376        updatePayload = [];377        break;378      case 'option':379        lastProps = getHostProps$1(domElement, lastRawProps);380        nextProps = getHostProps$1(domElement, nextRawProps);381        updatePayload = [];382        break;383      case 'select':384        lastProps = getHostProps$2(domElement, lastRawProps);385        nextProps = getHostProps$2(domElement, nextRawProps);386        updatePayload = [];387        break;388      case 'textarea':389        lastProps = getHostProps$3(domElement, lastRawProps);390        nextProps = getHostProps$3(domElement, nextRawProps);391        updatePayload = [];392        break;393      default:394        lastProps = lastRawProps;395        nextProps = nextRawProps;396        if (typeof lastProps.onClick !== 'function' && typeof nextProps.onClick === 'function') {397          // TODO: This cast may not be sound for SVG, MathML or custom elements.398          trapClickOnNonInteractiveElement(domElement);399        }400        break;401    }402    assertValidProps(tag, nextProps);403    var propKey;404    var styleName;405    var styleUpdates = null;406    for (propKey in lastProps) {407      if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {408        continue;409      }410      if (propKey === STYLE) {411        var lastStyle = lastProps[propKey];412        for (styleName in lastStyle) {413          if (lastStyle.hasOwnProperty(styleName)) {414            if (!styleUpdates) {415              styleUpdates = {};416            }417            styleUpdates[styleName] = '';418          }419        }420      } else if (propKey === DANGEROUSLY_SET_INNER_HTML || propKey === CHILDREN) ; else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING) ; else if (propKey === AUTOFOCUS) ; else if (registrationNameModules.hasOwnProperty(propKey)) {421        // This is a special case. If any listener updates we need to ensure422        // that the "current" fiber pointer gets updated so we need a commit423        // to update this element.424        if (!updatePayload) {425          updatePayload = [];426        }427      } else {428        // For all other deleted properties we add it to the queue. We use429        // the whitelist in the commit phase instead.430        (updatePayload = updatePayload || []).push(propKey, null);431      }432    }433    for (propKey in nextProps) {434      var nextProp = nextProps[propKey];435      var lastProp = lastProps != null ? lastProps[propKey] : undefined;436      if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {437        continue;438      }439      if (propKey === STYLE) {440        {441          if (nextProp) {442            // Freeze the next style object so that we can assume it won't be443            // mutated. We have already warned for this in the past.444            Object.freeze(nextProp);445          }446        }447        if (lastProp) {448          // Unset styles on `lastProp` but not on `nextProp`.449          for (styleName in lastProp) {450            if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {451              if (!styleUpdates) {452                styleUpdates = {};453              }454              styleUpdates[styleName] = '';455            }456          } // Update styles that changed since `lastProp`.457          for (styleName in nextProp) {458            if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {459              if (!styleUpdates) {460                styleUpdates = {};461              }462              styleUpdates[styleName] = nextProp[styleName];463            }464          }465        } else {466          // Relies on `updateStylesByID` not mutating `styleUpdates`.467          if (!styleUpdates) {468            if (!updatePayload) {469              updatePayload = [];470            }471            updatePayload.push(propKey, styleUpdates);472          }473          styleUpdates = nextProp;474        }475      } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {476        var nextHtml = nextProp ? nextProp[HTML$1] : undefined;477        var lastHtml = lastProp ? lastProp[HTML$1] : undefined;478        if (nextHtml != null) {479          if (lastHtml !== nextHtml) {480            (updatePayload = updatePayload || []).push(propKey, nextHtml);481          }482        }483      } else if (propKey === CHILDREN) {484        if (lastProp !== nextProp && (typeof nextProp === 'string' || typeof nextProp === 'number')) {485          (updatePayload = updatePayload || []).push(propKey, '' + nextProp);486        }487      } else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING) ; else if (registrationNameModules.hasOwnProperty(propKey)) {488        if (nextProp != null) {489          // We eagerly listen to this even though we haven't committed yet.490          if ( typeof nextProp !== 'function') {491            warnForInvalidEventListener(propKey, nextProp);492          }493          ensureListeningTo(rootContainerElement, propKey);494        }495        if (!updatePayload && lastProp !== nextProp) {496          // This is a special case. If any listener updates we need to ensure497          // that the "current" props pointer gets updated so we need a commit498          // to update this element.499          updatePayload = [];500        }501      } else {502        // For any other property we always add it to the queue and then we503        // filter it out using the whitelist during the commit.504        (updatePayload = updatePayload || []).push(propKey, nextProp);505      }506    }507    if (styleUpdates) {508      {509        validateShorthandPropertyCollisionInDev(styleUpdates, nextProps[STYLE]);510      }511      (updatePayload = updatePayload || []).push(STYLE, styleUpdates);512    }513    return updatePayload;514  } // Apply the diff.515  function updateProperties(domElement, updatePayload, tag, lastRawProps, nextRawProps) {516    // Update checked *before* name.517    // In the middle of an update, it is possible to have multiple checked.518    // When a checked radio tries to change name, browser makes another radio's checked false.519    if (tag === 'input' && nextRawProps.type === 'radio' && nextRawProps.name != null) {520      updateChecked(domElement, nextRawProps);521    }522    var wasCustomComponentTag = isCustomComponent(tag, lastRawProps);523    var isCustomComponentTag = isCustomComponent(tag, nextRawProps); // Apply the diff.524    updateDOMProperties(domElement, updatePayload, wasCustomComponentTag, isCustomComponentTag); // TODO: Ensure that an update gets scheduled if any of the special props525    // changed.526    switch (tag) {527      case 'input':528        // Update the wrapper around inputs *after* updating props. This has to529        // happen after `updateDOMProperties`. Otherwise HTML5 input validations530        // raise warnings and prevent the new value from being assigned.531        updateWrapper(domElement, nextRawProps);532        break;533      case 'textarea':534        updateWrapper$1(domElement, nextRawProps);535        break;536      case 'select':537        // <select> value update needs to occur after <option> children538        // reconciliation539        postUpdateWrapper(domElement, nextRawProps);540        break;541    }542  }543  function getPossibleStandardName(propName) {544    {545      var lowerCasedName = propName.toLowerCase();546      if (!possibleStandardNames.hasOwnProperty(lowerCasedName)) {547        return null;548      }549      return possibleStandardNames[lowerCasedName] || null;550    }551  }552  function diffHydratedProperties(domElement, tag, rawProps, parentNamespace, rootContainerElement) {553    var isCustomComponentTag;554    var extraAttributeNames;555    {556      suppressHydrationWarning = rawProps[SUPPRESS_HYDRATION_WARNING] === true;557      isCustomComponentTag = isCustomComponent(tag, rawProps);558      validatePropertiesInDevelopment(tag, rawProps);559    } // TODO: Make sure that we check isMounted before firing any of these events.560    switch (tag) {561      case 'iframe':562      case 'object':563      case 'embed':564        trapBubbledEvent(TOP_LOAD, domElement);565        break;566      case 'video':567      case 'audio':568        // Create listener for each media event569        for (var i = 0; i < mediaEventTypes.length; i++) {570          trapBubbledEvent(mediaEventTypes[i], domElement);571        }572        break;573      case 'source':574        trapBubbledEvent(TOP_ERROR, domElement);575        break;576      case 'img':577      case 'image':578      case 'link':579        trapBubbledEvent(TOP_ERROR, domElement);580        trapBubbledEvent(TOP_LOAD, domElement);581        break;582      case 'form':583        trapBubbledEvent(TOP_RESET, domElement);584        trapBubbledEvent(TOP_SUBMIT, domElement);585        break;586      case 'details':587        trapBubbledEvent(TOP_TOGGLE, domElement);588        break;589      case 'input':590        initWrapperState(domElement, rawProps);591        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening592        // to onChange. Even if there is no listener.593        ensureListeningTo(rootContainerElement, 'onChange');594        break;595      case 'option':596        validateProps(domElement, rawProps);597        break;598      case 'select':599        initWrapperState$1(domElement, rawProps);600        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening601        // to onChange. Even if there is no listener.602        ensureListeningTo(rootContainerElement, 'onChange');603        break;604      case 'textarea':605        initWrapperState$2(domElement, rawProps);606        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening607        // to onChange. Even if there is no listener.608        ensureListeningTo(rootContainerElement, 'onChange');609        break;610    }611    assertValidProps(tag, rawProps);612    {613      extraAttributeNames = new Set();614      var attributes = domElement.attributes;615      for (var _i = 0; _i < attributes.length; _i++) {616        var name = attributes[_i].name.toLowerCase();617        switch (name) {618          // Built-in SSR attribute is whitelisted619          case 'data-reactroot':620            break;621          // Controlled attributes are not validated622          // TODO: Only ignore them on controlled tags.623          case 'value':624            break;625          case 'checked':626            break;627          case 'selected':628            break;629          default:630            // Intentionally use the original name.631            // See discussion in https://github.com/facebook/react/pull/10676.632            extraAttributeNames.add(attributes[_i].name);633        }634      }635    }636    var updatePayload = null;637    for (var propKey in rawProps) {638      if (!rawProps.hasOwnProperty(propKey)) {639        continue;640      }641      var nextProp = rawProps[propKey];642      if (propKey === CHILDREN) {643        // For text content children we compare against textContent. This644        // might match additional HTML that is hidden when we read it using645        // textContent. E.g. "foo" will match "f<span>oo</span>" but that still646        // satisfies our requirement. Our requirement is not to produce perfect647        // HTML and attributes. Ideally we should preserve structure but it's648        // ok not to if the visible content is still enough to indicate what649        // even listeners these nodes might be wired up to.650        // TODO: Warn if there is more than a single textNode as a child.651        // TODO: Should we use domElement.firstChild.nodeValue to compare?652        if (typeof nextProp === 'string') {653          if (domElement.textContent !== nextProp) {654            if ( !suppressHydrationWarning) {655              warnForTextDifference(domElement.textContent, nextProp);656            }657            updatePayload = [CHILDREN, nextProp];658          }659        } else if (typeof nextProp === 'number') {660          if (domElement.textContent !== '' + nextProp) {661            if ( !suppressHydrationWarning) {662              warnForTextDifference(domElement.textContent, nextProp);663            }664            updatePayload = [CHILDREN, '' + nextProp];665          }666        }667      } else if (registrationNameModules.hasOwnProperty(propKey)) {668        if (nextProp != null) {669          if ( typeof nextProp !== 'function') {670            warnForInvalidEventListener(propKey, nextProp);671          }672          ensureListeningTo(rootContainerElement, propKey);673        }674      } else if ( // Convince Flow we've calculated it (it's DEV-only in this method.)675      typeof isCustomComponentTag === 'boolean') {676        // Validate that the properties correspond to their expected values.677        var serverValue = void 0;678        var propertyInfo = getPropertyInfo(propKey);679        if (suppressHydrationWarning) ; else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING || // Controlled attributes are not validated680        // TODO: Only ignore them on controlled tags.681        propKey === 'value' || propKey === 'checked' || propKey === 'selected') ; else if (propKey === DANGEROUSLY_SET_INNER_HTML) {682          var serverHTML = domElement.innerHTML;683          var nextHtml = nextProp ? nextProp[HTML$1] : undefined;684          var expectedHTML = normalizeHTML(domElement, nextHtml != null ? nextHtml : '');685          if (expectedHTML !== serverHTML) {686            warnForPropDifference(propKey, serverHTML, expectedHTML);...

ReactDOMFiberComponent.js

Source:ReactDOMFiberComponent.js

...60    validateInputPropertes(type, props);61    validateUnknownPropertes(type, props);62  };63}64function ensureListeningTo(rootContainerElement, registrationName) {65  var isDocumentOrFragment =66    rootContainerElement.nodeType === DOCUMENT_NODE ||67    rootContainerElement.nodeType === DOCUMENT_FRAGMENT_NODE;68  var doc = isDocumentOrFragment69    ? rootContainerElement70    : rootContainerElement.ownerDocument;71  listenTo(registrationName, doc);72}73// There are so many media events, it makes sense to just74// maintain a list rather than create a `trapBubbledEvent` for each75var mediaEvents = {76  topAbort: 'abort',77  topCanPlay: 'canplay',78  topCanPlayThrough: 'canplaythrough',79  topDurationChange: 'durationchange',80  topEmptied: 'emptied',81  topEncrypted: 'encrypted',82  topEnded: 'ended',83  topError: 'error',84  topLoadedData: 'loadeddata',85  topLoadedMetadata: 'loadedmetadata',86  topLoadStart: 'loadstart',87  topPause: 'pause',88  topPlay: 'play',89  topPlaying: 'playing',90  topProgress: 'progress',91  topRateChange: 'ratechange',92  topSeeked: 'seeked',93  topSeeking: 'seeking',94  topStalled: 'stalled',95  topSuspend: 'suspend',96  topTimeUpdate: 'timeupdate',97  topVolumeChange: 'volumechange',98  topWaiting: 'waiting',99};100function trapClickOnNonInteractiveElement(node: HTMLElement) {101  // Mobile Safari does not fire properly bubble click events on102  // non-interactive elements, which means delegated click listeners do not103  // fire. The workaround for this bug involves attaching an empty click104  // listener on the target node.105  // http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html106  // Just set it using the onclick property so that we don't have to manage any107  // bookkeeping for it. Not sure if we need to clear it when the listener is108  // removed.109  // TODO: Only do this for the relevant Safaris maybe?110  node.onclick = emptyFunction;111}112function trapBubbledEventsLocal(node: Element, tag: string) {113  // If a component renders to null or if another component fatals and causes114  // the state of the tree to be corrupted, `node` here can be null.115  // TODO: Make sure that we check isMounted before firing any of these events.116  // TODO: Inline these below since we're calling this from an equivalent117  // switch statement.118  switch (tag) {119    case 'iframe':120    case 'object':121      ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node);122      break;123    case 'video':124    case 'audio':125      // Create listener for each media event126      for (var event in mediaEvents) {127        if (mediaEvents.hasOwnProperty(event)) {128          ReactBrowserEventEmitter.trapBubbledEvent(129            event,130            mediaEvents[event],131            node,132          );133        }134      }135      break;136    case 'source':137      ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node);138      break;139    case 'img':140    case 'image':141      ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node);142      ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node);143      break;144    case 'form':145      ReactBrowserEventEmitter.trapBubbledEvent('topReset', 'reset', node);146      ReactBrowserEventEmitter.trapBubbledEvent('topSubmit', 'submit', node);147      break;148    case 'input':149    case 'select':150    case 'textarea':151      ReactBrowserEventEmitter.trapBubbledEvent('topInvalid', 'invalid', node);152      break;153    case 'details':154      ReactBrowserEventEmitter.trapBubbledEvent('topToggle', 'toggle', node);155      break;156  }157}158function setInitialDOMProperties(159  domElement: Element,160  rootContainerElement: Element | Document,161  nextProps: Object,162  isCustomComponentTag: boolean,163): void {164  for (var propKey in nextProps) {165    if (!nextProps.hasOwnProperty(propKey)) {166      continue;167    }168    var nextProp = nextProps[propKey];169    if (propKey === STYLE) {170      if (__DEV__) {171        if (nextProp) {172          // Freeze the next style object so that we can assume it won't be173          // mutated. We have already warned for this in the past.174          Object.freeze(nextProp);175        }176      }177      // Relies on `updateStylesByID` not mutating `styleUpdates`.178      // TODO: call ReactInstrumentation.debugTool.onHostOperation in DEV.179      CSSPropertyOperations.setValueForStyles(domElement, nextProp);180    } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {181      var nextHtml = nextProp ? nextProp[HTML] : undefined;182      if (nextHtml != null) {183        setInnerHTML(domElement, nextHtml);184      }185    } else if (propKey === CHILDREN) {186      if (typeof nextProp === 'string') {187        setTextContent(domElement, nextProp);188      } else if (typeof nextProp === 'number') {189        setTextContent(domElement, '' + nextProp);190      }191    } else if (propKey === SUPPRESS_CONTENT_EDITABLE_WARNING) {192      // Noop193    } else if (registrationNameModules.hasOwnProperty(propKey)) {194      if (nextProp) {195        ensureListeningTo(rootContainerElement, propKey);196      }197    } else if (isCustomComponentTag) {198      DOMPropertyOperations.setValueForAttribute(domElement, propKey, nextProp);199    } else if (200      DOMProperty.properties[propKey] ||201      DOMProperty.isCustomAttribute(propKey)202    ) {203      // If we're updating to null or undefined, we should remove the property204      // from the DOM node instead of inadvertently setting to a string. This205      // brings us in line with the same behavior we have on initial render.206      if (nextProp != null) {207        DOMPropertyOperations.setValueForProperty(208          domElement,209          propKey,210          nextProp,211        );212      }213    }214  }215}216function updateDOMProperties(217  domElement: Element,218  updatePayload: Array<any>,219  wasCustomComponentTag: boolean,220  isCustomComponentTag: boolean,221): void {222  // TODO: Handle wasCustomComponentTag223  for (var i = 0; i < updatePayload.length; i += 2) {224    var propKey = updatePayload[i];225    var propValue = updatePayload[i + 1];226    if (propKey === STYLE) {227      // TODO: call ReactInstrumentation.debugTool.onHostOperation in DEV.228      CSSPropertyOperations.setValueForStyles(domElement, propValue);229    } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {230      setInnerHTML(domElement, propValue);231    } else if (propKey === CHILDREN) {232      setTextContent(domElement, propValue);233    } else if (isCustomComponentTag) {234      if (propValue != null) {235        DOMPropertyOperations.setValueForAttribute(236          domElement,237          propKey,238          propValue,239        );240      } else {241        DOMPropertyOperations.deleteValueForAttribute(domElement, propKey);242      }243    } else if (244      DOMProperty.properties[propKey] ||245      DOMProperty.isCustomAttribute(propKey)246    ) {247      // If we're updating to null or undefined, we should remove the property248      // from the DOM node instead of inadvertently setting to a string. This249      // brings us in line with the same behavior we have on initial render.250      if (propValue != null) {251        DOMPropertyOperations.setValueForProperty(252          domElement,253          propKey,254          propValue,255        );256      } else {257        DOMPropertyOperations.deleteValueForProperty(domElement, propKey);258      }259    }260  }261}262// Assumes there is no parent namespace.263function getIntrinsicNamespace(type: string): string {264  switch (type) {265    case 'svg':266      return SVG_NAMESPACE;267    case 'math':268      return MATH_NAMESPACE;269    default:270      return HTML_NAMESPACE;271  }272}273var ReactDOMFiberComponent = {274  getChildNamespace(parentNamespace: string | null, type: string): string {275    if (parentNamespace == null || parentNamespace === HTML_NAMESPACE) {276      // No (or default) parent namespace: potential entry point.277      return getIntrinsicNamespace(type);278    }279    if (parentNamespace === SVG_NAMESPACE && type === 'foreignObject') {280      // We're leaving SVG.281      return HTML_NAMESPACE;282    }283    // By default, pass namespace below.284    return parentNamespace;285  },286  createElement(287    type: *,288    props: Object,289    rootContainerElement: Element | Document,290    parentNamespace: string,291  ): Element {292    // We create tags in the namespace of their parent container, except HTML293    // tags get no namespace.294    var ownerDocument: Document = rootContainerElement.nodeType ===295      DOCUMENT_NODE296      ? (rootContainerElement: any)297      : rootContainerElement.ownerDocument;298    var domElement: Element;299    var namespaceURI = parentNamespace;300    if (namespaceURI === HTML_NAMESPACE) {301      namespaceURI = getIntrinsicNamespace(type);302    }303    if (__DEV__) {304      var isCustomComponentTag = isCustomComponent(type, props);305    }306    if (namespaceURI === HTML_NAMESPACE) {307      if (__DEV__) {308        warning(309          isCustomComponentTag || type === type.toLowerCase(),310          '<%s /> is using uppercase HTML. Always use lowercase HTML tags ' +311            'in React.',312          type,313        );314      }315      if (type === 'script') {316        // Create the script via .innerHTML so its "parser-inserted" flag is317        // set to true and it does not execute318        var div = ownerDocument.createElement('div');319        div.innerHTML = '<script><' + '/script>'; // eslint-disable-line320        // This is guaranteed to yield a script element.321        var firstChild = ((div.firstChild: any): HTMLScriptElement);322        domElement = div.removeChild(firstChild);323      } else if (props.is) {324        // $FlowIssue `createElement` should be updated for Web Components325        domElement = ownerDocument.createElement(type, {is: props.is});326      } else {327        // Separate else branch instead of using `props.is || undefined` above because of a Firefox bug.328        // See discussion in https://github.com/facebook/react/pull/6896329        // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240330        domElement = ownerDocument.createElement(type);331      }332    } else {333      domElement = ownerDocument.createElementNS(namespaceURI, type);334    }335    if (__DEV__) {336      if (namespaceURI === HTML_NAMESPACE) {337        warning(338          isCustomComponentTag ||339            Object.prototype.toString.call(domElement) !==340              '[object HTMLUnknownElement]',341          'The tag <%s> is unrecognized in this browser. ' +342            'If you meant to render a React component, start its name with ' +343            'an uppercase letter.',344          type,345        );346      }347    }348    return domElement;349  },350  setInitialProperties(351    domElement: Element,352    tag: string,353    rawProps: Object,354    rootContainerElement: Element | Document,355  ): void {356    var isCustomComponentTag = isCustomComponent(tag, rawProps);357    if (__DEV__) {358      validatePropertiesInDevelopment(tag, rawProps);359      if (isCustomComponentTag && !didWarnShadyDOM && domElement.shadyRoot) {360        warning(361          false,362          '%s is using shady DOM. Using shady DOM with React can ' +363            'cause things to break subtly.',364          getCurrentFiberOwnerName() || 'A component',365        );366        didWarnShadyDOM = true;367      }368    }369    var props: Object;370    switch (tag) {371      case 'audio':372      case 'form':373      case 'iframe':374      case 'img':375      case 'image':376      case 'link':377      case 'object':378      case 'source':379      case 'video':380      case 'details':381        trapBubbledEventsLocal(domElement, tag);382        props = rawProps;383        break;384      case 'input':385        ReactDOMFiberInput.initWrapperState(domElement, rawProps);386        props = ReactDOMFiberInput.getHostProps(domElement, rawProps);387        trapBubbledEventsLocal(domElement, tag);388        // For controlled components we always need to ensure we're listening389        // to onChange. Even if there is no listener.390        ensureListeningTo(rootContainerElement, 'onChange');391        break;392      case 'option':393        ReactDOMFiberOption.validateProps(domElement, rawProps);394        props = ReactDOMFiberOption.getHostProps(domElement, rawProps);395        break;396      case 'select':397        ReactDOMFiberSelect.initWrapperState(domElement, rawProps);398        props = ReactDOMFiberSelect.getHostProps(domElement, rawProps);399        trapBubbledEventsLocal(domElement, tag);400        // For controlled components we always need to ensure we're listening401        // to onChange. Even if there is no listener.402        ensureListeningTo(rootContainerElement, 'onChange');403        break;404      case 'textarea':405        ReactDOMFiberTextarea.initWrapperState(domElement, rawProps);406        props = ReactDOMFiberTextarea.getHostProps(domElement, rawProps);407        trapBubbledEventsLocal(domElement, tag);408        // For controlled components we always need to ensure we're listening409        // to onChange. Even if there is no listener.410        ensureListeningTo(rootContainerElement, 'onChange');411        break;412      default:413        props = rawProps;414    }415    assertValidProps(tag, props, getCurrentFiberOwnerName);416    setInitialDOMProperties(417      domElement,418      rootContainerElement,419      props,420      isCustomComponentTag,421    );422    switch (tag) {423      case 'input':424        // TODO: Make sure we check if this is still unmounted or do any clean425        // up necessary since we never stop tracking anymore.426        inputValueTracking.trackNode((domElement: any));427        ReactDOMFiberInput.postMountWrapper(domElement, rawProps);428        break;429      case 'textarea':430        // TODO: Make sure we check if this is still unmounted or do any clean431        // up necessary since we never stop tracking anymore.432        inputValueTracking.trackNode((domElement: any));433        ReactDOMFiberTextarea.postMountWrapper(domElement, rawProps);434        break;435      case 'option':436        ReactDOMFiberOption.postMountWrapper(domElement, rawProps);437        break;438      case 'select':439        ReactDOMFiberSelect.postMountWrapper(domElement, rawProps);440        break;441      default:442        if (typeof props.onClick === 'function') {443          // TODO: This cast may not be sound for SVG, MathML or custom elements.444          trapClickOnNonInteractiveElement(((domElement: any): HTMLElement));445        }446        break;447    }448  },449  // Calculate the diff between the two objects.450  diffProperties(451    domElement: Element,452    tag: string,453    lastRawProps: Object,454    nextRawProps: Object,455    rootContainerElement: Element | Document,456  ): null | Array<mixed> {457    if (__DEV__) {458      validatePropertiesInDevelopment(tag, nextRawProps);459    }460    var updatePayload: null | Array<any> = null;461    var lastProps: Object;462    var nextProps: Object;463    switch (tag) {464      case 'input':465        lastProps = ReactDOMFiberInput.getHostProps(domElement, lastRawProps);466        nextProps = ReactDOMFiberInput.getHostProps(domElement, nextRawProps);467        updatePayload = [];468        break;469      case 'option':470        lastProps = ReactDOMFiberOption.getHostProps(domElement, lastRawProps);471        nextProps = ReactDOMFiberOption.getHostProps(domElement, nextRawProps);472        updatePayload = [];473        break;474      case 'select':475        lastProps = ReactDOMFiberSelect.getHostProps(domElement, lastRawProps);476        nextProps = ReactDOMFiberSelect.getHostProps(domElement, nextRawProps);477        updatePayload = [];478        break;479      case 'textarea':480        lastProps = ReactDOMFiberTextarea.getHostProps(481          domElement,482          lastRawProps,483        );484        nextProps = ReactDOMFiberTextarea.getHostProps(485          domElement,486          nextRawProps,487        );488        updatePayload = [];489        break;490      default:491        lastProps = lastRawProps;492        nextProps = nextRawProps;493        if (494          typeof lastProps.onClick !== 'function' &&495          typeof nextProps.onClick === 'function'496        ) {497          // TODO: This cast may not be sound for SVG, MathML or custom elements.498          trapClickOnNonInteractiveElement(((domElement: any): HTMLElement));499        }500        break;501    }502    assertValidProps(tag, nextProps, getCurrentFiberOwnerName);503    var propKey;504    var styleName;505    var styleUpdates = null;506    for (propKey in lastProps) {507      if (508        nextProps.hasOwnProperty(propKey) ||509        !lastProps.hasOwnProperty(propKey) ||510        lastProps[propKey] == null511      ) {512        continue;513      }514      if (propKey === STYLE) {515        var lastStyle = lastProps[propKey];516        for (styleName in lastStyle) {517          if (lastStyle.hasOwnProperty(styleName)) {518            if (!styleUpdates) {519              styleUpdates = {};520            }521            styleUpdates[styleName] = '';522          }523        }524      } else if (525        propKey === DANGEROUSLY_SET_INNER_HTML ||526        propKey === CHILDREN527      ) {528        // Noop. This is handled by the clear text mechanism.529      } else if (propKey === SUPPRESS_CONTENT_EDITABLE_WARNING) {530        // Noop531      } else if (registrationNameModules.hasOwnProperty(propKey)) {532        // This is a special case. If any listener updates we need to ensure533        // that the "current" fiber pointer gets updated so we need a commit534        // to update this element.535        if (!updatePayload) {536          updatePayload = [];537        }538      } else {539        // For all other deleted properties we add it to the queue. We use540        // the whitelist in the commit phase instead.541        (updatePayload = updatePayload || []).push(propKey, null);542      }543    }544    for (propKey in nextProps) {545      var nextProp = nextProps[propKey];546      var lastProp = lastProps != null ? lastProps[propKey] : undefined;547      if (548        !nextProps.hasOwnProperty(propKey) ||549        nextProp === lastProp ||550        (nextProp == null && lastProp == null)551      ) {552        continue;553      }554      if (propKey === STYLE) {555        if (__DEV__) {556          if (nextProp) {557            // Freeze the next style object so that we can assume it won't be558            // mutated. We have already warned for this in the past.559            Object.freeze(nextProp);560          }561        }562        if (lastProp) {563          // Unset styles on `lastProp` but not on `nextProp`.564          for (styleName in lastProp) {565            if (566              lastProp.hasOwnProperty(styleName) &&567              (!nextProp || !nextProp.hasOwnProperty(styleName))568            ) {569              if (!styleUpdates) {570                styleUpdates = {};571              }572              styleUpdates[styleName] = '';573            }574          }575          // Update styles that changed since `lastProp`.576          for (styleName in nextProp) {577            if (578              nextProp.hasOwnProperty(styleName) &&579              lastProp[styleName] !== nextProp[styleName]580            ) {581              if (!styleUpdates) {582                styleUpdates = {};583              }584              styleUpdates[styleName] = nextProp[styleName];585            }586          }587        } else {588          // Relies on `updateStylesByID` not mutating `styleUpdates`.589          if (!styleUpdates) {590            if (!updatePayload) {591              updatePayload = [];592            }593            updatePayload.push(propKey, styleUpdates);594          }595          styleUpdates = nextProp;596        }597      } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {598        var nextHtml = nextProp ? nextProp[HTML] : undefined;599        var lastHtml = lastProp ? lastProp[HTML] : undefined;600        if (nextHtml != null) {601          if (lastHtml !== nextHtml) {602            (updatePayload = updatePayload || []).push(propKey, '' + nextHtml);603          }604        } else {605          // TODO: It might be too late to clear this if we have children606          // inserted already.607        }608      } else if (propKey === CHILDREN) {609        if (610          lastProp !== nextProp &&611          (typeof nextProp === 'string' || typeof nextProp === 'number')612        ) {613          (updatePayload = updatePayload || []).push(propKey, '' + nextProp);614        }615      } else if (propKey === SUPPRESS_CONTENT_EDITABLE_WARNING) {616        // Noop617      } else if (registrationNameModules.hasOwnProperty(propKey)) {618        if (nextProp) {619          // We eagerly listen to this even though we haven't committed yet.620          ensureListeningTo(rootContainerElement, propKey);621        }622        if (!updatePayload && lastProp !== nextProp) {623          // This is a special case. If any listener updates we need to ensure624          // that the "current" props pointer gets updated so we need a commit625          // to update this element.626          updatePayload = [];627        }628      } else {629        // For any other property we always add it to the queue and then we630        // filter it out using the whitelist during the commit.631        (updatePayload = updatePayload || []).push(propKey, nextProp);632      }633    }634    if (styleUpdates) {635      (updatePayload = updatePayload || []).push(STYLE, styleUpdates);636    }637    return updatePayload;638  },639  // Apply the diff.640  updateProperties(641    domElement: Element,642    updatePayload: Array<any>,643    tag: string,644    lastRawProps: Object,645    nextRawProps: Object,646  ): void {647    var wasCustomComponentTag = isCustomComponent(tag, lastRawProps);648    var isCustomComponentTag = isCustomComponent(tag, nextRawProps);649    // Apply the diff.650    updateDOMProperties(651      domElement,652      updatePayload,653      wasCustomComponentTag,654      isCustomComponentTag,655    );656    // TODO: Ensure that an update gets scheduled if any of the special props657    // changed.658    switch (tag) {659      case 'input':660        // Update the wrapper around inputs *after* updating props. This has to661        // happen after `updateDOMProperties`. Otherwise HTML5 input validations662        // raise warnings and prevent the new value from being assigned.663        ReactDOMFiberInput.updateWrapper(domElement, nextRawProps);664        break;665      case 'textarea':666        ReactDOMFiberTextarea.updateWrapper(domElement, nextRawProps);667        break;668      case 'select':669        // <select> value update needs to occur after <option> children670        // reconciliation671        ReactDOMFiberSelect.postUpdateWrapper(domElement, nextRawProps);672        break;673    }674  },675  diffHydratedProperties(676    domElement: Element,677    tag: string,678    rawProps: Object,679    rootContainerElement: Element | Document,680  ): null | Array<mixed> {681    if (__DEV__) {682      var isCustomComponentTag = isCustomComponent(tag, rawProps);683      validatePropertiesInDevelopment(tag, rawProps);684      if (isCustomComponentTag && !didWarnShadyDOM && domElement.shadyRoot) {685        warning(686          false,687          '%s is using shady DOM. Using shady DOM with React can ' +688            'cause things to break subtly.',689          getCurrentFiberOwnerName() || 'A component',690        );691        didWarnShadyDOM = true;692      }693    }694    switch (tag) {695      case 'audio':696      case 'form':697      case 'iframe':698      case 'img':699      case 'image':700      case 'link':701      case 'object':702      case 'source':703      case 'video':704      case 'details':705        trapBubbledEventsLocal(domElement, tag);706        break;707      case 'input':708        ReactDOMFiberInput.initWrapperState(domElement, rawProps);709        trapBubbledEventsLocal(domElement, tag);710        // For controlled components we always need to ensure we're listening711        // to onChange. Even if there is no listener.712        ensureListeningTo(rootContainerElement, 'onChange');713        break;714      case 'option':715        ReactDOMFiberOption.validateProps(domElement, rawProps);716        break;717      case 'select':718        ReactDOMFiberSelect.initWrapperState(domElement, rawProps);719        trapBubbledEventsLocal(domElement, tag);720        // For controlled components we always need to ensure we're listening721        // to onChange. Even if there is no listener.722        ensureListeningTo(rootContainerElement, 'onChange');723        break;724      case 'textarea':725        ReactDOMFiberTextarea.initWrapperState(domElement, rawProps);726        trapBubbledEventsLocal(domElement, tag);727        // For controlled components we always need to ensure we're listening728        // to onChange. Even if there is no listener.729        ensureListeningTo(rootContainerElement, 'onChange');730        break;731    }732    assertValidProps(tag, rawProps, getCurrentFiberOwnerName);733    var updatePayload = null;734    for (var propKey in rawProps) {735      if (!rawProps.hasOwnProperty(propKey)) {736        continue;737      }738      var nextProp = rawProps[propKey];739      if (propKey === CHILDREN) {740        // For text content children we compare against textContent. This741        // might match additional HTML that is hidden when we read it using742        // textContent. E.g. "foo" will match "f<span>oo</span>" but that still743        // satisfies our requirement. Our requirement is not to produce perfect744        // HTML and attributes. Ideally we should preserve structure but it's745        // ok not to if the visible content is still enough to indicate what746        // even listeners these nodes might be wired up to.747        // TODO: Warn if there is more than a single textNode as a child.748        // TODO: Should we use domElement.firstChild.nodeValue to compare?749        if (typeof nextProp === 'string') {750          if (domElement.textContent !== nextProp) {751            updatePayload = [CHILDREN, nextProp];752          }753        } else if (typeof nextProp === 'number') {754          if (domElement.textContent !== '' + nextProp) {755            updatePayload = [CHILDREN, '' + nextProp];756          }757        }758      } else if (registrationNameModules.hasOwnProperty(propKey)) {759        if (nextProp) {760          ensureListeningTo(rootContainerElement, propKey);761        }762      }763    }764    switch (tag) {765      case 'input':766        // TODO: Make sure we check if this is still unmounted or do any clean767        // up necessary since we never stop tracking anymore.768        inputValueTracking.trackNode((domElement: any));769        ReactDOMFiberInput.postMountWrapper(domElement, rawProps);770        break;771      case 'textarea':772        // TODO: Make sure we check if this is still unmounted or do any clean773        // up necessary since we never stop tracking anymore.774        inputValueTracking.trackNode((domElement: any));...

Using AI Code Generation

1const { ensureListeningTo } = require('playwright/lib/server/browserType');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  ensureListeningTo(browser);6})();

Using AI Code Generation

1const { chromium } = require('playwright');2const { ensureListeningTo } = require('playwright/lib/server/browserServer');3(async () => {4  const browser = await chromium.launch();5  const browserServer = await browser.server();6  await ensureListeningTo(browserServer, 1000);7  console.log('Listening on port 1000');8})();9const { chromium } = require('playwright');10module.exports = {11  webServer: {12  },13  use: {14    launchOptions: {15    },16  },17};18const { chromium } = require('playwright');19module.exports = {20  webServer: {21  },22  use: {23    launchOptions: {24    },25  },26};

Using AI Code Generation

1const playwright = require('playwright');2const { ensureListeningTo } = require('playwright/lib/server/browserServer');3const browser = await playwright.chromium.launch();4const server = await browser.newContext().newPage().server();5await ensureListeningTo(server, 'request');6server.on('request', request => {7  console.log(request.url());8});9await browser.close();10const playwright = require('playwright');11const { ensureListeningTo } = require('playwright/lib/server/browserServer');12const browser = await playwright.chromium.launch();13const server = await browser.newContext().newPage().server();14await ensureListeningTo(server, 'request');15server.on('request', request => {16  console.log(request.url());17});18await browser.close();19const playwright = require('playwright');20const { ensureListeningTo } = require('playwright/lib/server/browserServer');21const browser = await playwright.chromium.launch();22const server = await browser.newContext().newPage().server();23await ensureListeningTo(server, 'request');24server.on('request', request => {25  console.log(request.url());26});27await browser.close();28const playwright = require('playwright');29const { ensureListeningTo } = require('playwright/lib/server/browserServer');30const browser = await playwright.chromium.launch();31const server = await browser.newContext().newPage().server();32await ensureListeningTo(server, 'request');33server.on('request', request => {34  console.log(request.url());35});36await browser.close();37const playwright = require('playwright');38const { ensureListeningTo } = require('playwright/lib/server/browserServer');39const browser = await playwright.chromium.launch();40const server = await browser.newContext().newPage().server();41await ensureListeningTo(server, 'request');42server.on('request', request => {43  console.log(request.url());44});45await browser.close();46const playwright = require('playwright');47const { ensureListeningTo } = require('playwright/lib/server/browserServer');48const browser = await playwright.chromium.launch();49const server = await browser.newContext().newPage().server();50await ensureListeningTo(server, 'request');

Using AI Code Generation

1const playwright = require('playwright');2const internalAPI = require('playwright/lib/server/playwright');3const { ensureListeningTo } = internalAPI;4(async () => {5  const browser = await playwright.firefox.launch();6  const page = await browser.newPage();7  await page.screenshot({ path: 'example.png' });8  await browser.close();9})();

Using AI Code Generation

1const { ensureListeningTo } = require('playwright/lib/server/webkit');2await ensureListeningTo(8080);3const browser = await webkit.launch({ headless: false, args: ['--remote-debugging-port=8080'] });4const context = await browser.newContext();5const page = await context.newPage();6[ERROR:network_service_instance_impl.cc(175)] Failed to listen on

Using AI Code Generation

1const {ensureListeningTo} = require('playwright/lib/server/network');2ensureListeningTo(1234);3const {ensureListeningTo} = require('playwright/lib/server/network');4ensureListeningTo(1234);5const {ensureListeningTo} = require('playwright/lib/server/network');6ensureListeningTo(1234);7const {ensureListeningTo} = require('playwright/lib/server/network');8ensureListeningTo(1234);9const {ensureListeningTo} = require('playwright/lib/server/network');10ensureListeningTo(1234);11const {ensureListeningTo} = require('playwright/lib/server/network');12ensureListeningTo(1234);13const {ensureListeningTo} = require('playwright/lib/server/network');14ensureListeningTo(1234);15const {ensureListeningTo} = require('playwright/lib/server/network');16ensureListeningTo(1234);17const {ensureListeningTo} = require('playwright/lib/server/network');18ensureListeningTo(1234);19const {ensureListeningTo} = require('play

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.