How to use validateFunctionComponentInDev method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberBeginWork.js

Source:ReactFiberBeginWork.js

...312      // to a SimpleMemoComponent to allow fast path updates.313      workInProgress.tag = SimpleMemoComponent;314      workInProgress.type = type;315      if (__DEV__) {316        validateFunctionComponentInDev(workInProgress, type);317      }318      return updateSimpleMemoComponent(319        current,320        workInProgress,321        type,322        nextProps,323        updateExpirationTime,324        renderExpirationTime,325      );326    }327    if (__DEV__) {328      const innerPropTypes = type.propTypes;329      if (innerPropTypes) {330        // Inner memo component props aren't currently validated in createElement.331        // We could move it there, but we'd still need this for lazy code path.332        checkPropTypes(333          innerPropTypes,334          nextProps, // Resolved props335          'prop',336          getComponentName(type),337          getCurrentFiberStackInDev,338        );339      }340    }341    let child = createFiberFromTypeAndProps(342      Component.type,343      null,344      nextProps,345      null,346      workInProgress.mode,347      renderExpirationTime,348    );349    child.ref = workInProgress.ref;350    child.return = workInProgress;351    workInProgress.child = child;352    return child;353  }354  if (__DEV__) {355    const type = Component.type;356    const innerPropTypes = type.propTypes;357    if (innerPropTypes) {358      // Inner memo component props aren't currently validated in createElement.359      // We could move it there, but we'd still need this for lazy code path.360      checkPropTypes(361        innerPropTypes,362        nextProps, // Resolved props363        'prop',364        getComponentName(type),365        getCurrentFiberStackInDev,366      );367    }368  }369  let currentChild = ((current.child: any): Fiber); // This is always exactly one child370  if (updateExpirationTime < renderExpirationTime) {371    // This will be the props with resolved defaultProps,372    // unlike current.memoizedProps which will be the unresolved ones.373    const prevProps = currentChild.memoizedProps;374    // Default to shallow comparison375    let compare = Component.compare;376    compare = compare !== null ? compare : shallowEqual;377    if (compare(prevProps, nextProps) && current.ref === workInProgress.ref) {378      return bailoutOnAlreadyFinishedWork(379        current,380        workInProgress,381        renderExpirationTime,382      );383    }384  }385  // React DevTools reads this flag.386  workInProgress.effectTag |= PerformedWork;387  let newChild = createWorkInProgress(388    currentChild,389    nextProps,390    renderExpirationTime,391  );392  newChild.ref = workInProgress.ref;393  newChild.return = workInProgress;394  workInProgress.child = newChild;395  return newChild;396}397function updateSimpleMemoComponent(398  current: Fiber | null,399  workInProgress: Fiber,400  Component: any,401  nextProps: any,402  updateExpirationTime,403  renderExpirationTime: ExpirationTime,404): null | Fiber {405  // TODO: current can be non-null here even if the component406  // hasn't yet mounted. This happens when the inner render suspends.407  // We'll need to figure out if this is fine or can cause issues.408  if (__DEV__) {409    if (workInProgress.type !== workInProgress.elementType) {410      // Lazy component props can't be validated in createElement411      // because they're only guaranteed to be resolved here.412      let outerMemoType = workInProgress.elementType;413      if (outerMemoType.$$typeof === REACT_LAZY_TYPE) {414        // We warn when you define propTypes on lazy()415        // so let's just skip over it to find memo() outer wrapper.416        // Inner props for memo are validated later.417        outerMemoType = refineResolvedLazyComponent(outerMemoType);418      }419      const outerPropTypes = outerMemoType && (outerMemoType: any).propTypes;420      if (outerPropTypes) {421        checkPropTypes(422          outerPropTypes,423          nextProps, // Resolved (SimpleMemoComponent has no defaultProps)424          'prop',425          getComponentName(outerMemoType),426          getCurrentFiberStackInDev,427        );428      }429      // Inner propTypes will be validated in the function component path.430    }431  }432  if (current !== null) {433    const prevProps = current.memoizedProps;434    if (435      shallowEqual(prevProps, nextProps) &&436      current.ref === workInProgress.ref437    ) {438      didReceiveUpdate = false;439      if (updateExpirationTime < renderExpirationTime) {440        return bailoutOnAlreadyFinishedWork(441          current,442          workInProgress,443          renderExpirationTime,444        );445      }446    }447  }448  return updateFunctionComponent(449    current,450    workInProgress,451    Component,452    nextProps,453    renderExpirationTime,454  );455}456function updateFragment(457  current: Fiber | null,458  workInProgress: Fiber,459  renderExpirationTime: ExpirationTime,460) {461  const nextChildren = workInProgress.pendingProps;462  reconcileChildren(463    current,464    workInProgress,465    nextChildren,466    renderExpirationTime,467  );468  return workInProgress.child;469}470function updateMode(471  current: Fiber | null,472  workInProgress: Fiber,473  renderExpirationTime: ExpirationTime,474) {475  const nextChildren = workInProgress.pendingProps.children;476  reconcileChildren(477    current,478    workInProgress,479    nextChildren,480    renderExpirationTime,481  );482  return workInProgress.child;483}484function updateProfiler(485  current: Fiber | null,486  workInProgress: Fiber,487  renderExpirationTime: ExpirationTime,488) {489  if (enableProfilerTimer) {490    workInProgress.effectTag |= Update;491  }492  const nextProps = workInProgress.pendingProps;493  const nextChildren = nextProps.children;494  reconcileChildren(495    current,496    workInProgress,497    nextChildren,498    renderExpirationTime,499  );500  return workInProgress.child;501}502function markRef(current: Fiber | null, workInProgress: Fiber) {503  const ref = workInProgress.ref;504  if (505    (current === null && ref !== null) ||506    (current !== null && current.ref !== ref)507  ) {508    // Schedule a Ref effect509    workInProgress.effectTag |= Ref;510  }511}512function updateFunctionComponent(513  current,514  workInProgress,515  Component,516  nextProps: any,517  renderExpirationTime,518) {519  if (__DEV__) {520    if (workInProgress.type !== workInProgress.elementType) {521      // Lazy component props can't be validated in createElement522      // because they're only guaranteed to be resolved here.523      const innerPropTypes = Component.propTypes;524      if (innerPropTypes) {525        checkPropTypes(526          innerPropTypes,527          nextProps, // Resolved props528          'prop',529          getComponentName(Component),530          getCurrentFiberStackInDev,531        );532      }533    }534  }535  const unmaskedContext = getUnmaskedContext(workInProgress, Component, true);536  const context = getMaskedContext(workInProgress, unmaskedContext);537  let nextChildren;538  prepareToReadContext(workInProgress, renderExpirationTime);539  if (__DEV__) {540    ReactCurrentOwner.current = workInProgress;541    setCurrentPhase('render');542    nextChildren = renderWithHooks(543      current,544      workInProgress,545      Component,546      nextProps,547      context,548      renderExpirationTime,549    );550    if (551      debugRenderPhaseSideEffects ||552      (debugRenderPhaseSideEffectsForStrictMode &&553        workInProgress.mode & StrictMode)554    ) {555      // Only double-render components with Hooks556      if (workInProgress.memoizedState !== null) {557        nextChildren = renderWithHooks(558          current,559          workInProgress,560          Component,561          nextProps,562          context,563          renderExpirationTime,564        );565      }566    }567    setCurrentPhase(null);568  } else {569    nextChildren = renderWithHooks(570      current,571      workInProgress,572      Component,573      nextProps,574      context,575      renderExpirationTime,576    );577  }578  if (current !== null && !didReceiveUpdate) {579    bailoutHooks(current, workInProgress, renderExpirationTime);580    return bailoutOnAlreadyFinishedWork(581      current,582      workInProgress,583      renderExpirationTime,584    );585  }586  // React DevTools reads this flag.587  workInProgress.effectTag |= PerformedWork;588  reconcileChildren(589    current,590    workInProgress,591    nextChildren,592    renderExpirationTime,593  );594  return workInProgress.child;595}596function updateClassComponent(597  current: Fiber | null,598  workInProgress: Fiber,599  Component: any,600  nextProps,601  renderExpirationTime: ExpirationTime,602) {603  if (__DEV__) {604    if (workInProgress.type !== workInProgress.elementType) {605      // Lazy component props can't be validated in createElement606      // because they're only guaranteed to be resolved here.607      const innerPropTypes = Component.propTypes;608      if (innerPropTypes) {609        checkPropTypes(610          innerPropTypes,611          nextProps, // Resolved props612          'prop',613          getComponentName(Component),614          getCurrentFiberStackInDev,615        );616      }617    }618  }619  // Push context providers early to prevent context stack mismatches.620  // During mounting we don't know the child context yet as the instance doesn't exist.621  // We will invalidate the child context in finishClassComponent() right after rendering.622  let hasContext;623  if (isLegacyContextProvider(Component)) {624    hasContext = true;625    pushLegacyContextProvider(workInProgress);626  } else {627    hasContext = false;628  }629  prepareToReadContext(workInProgress, renderExpirationTime);630  const instance = workInProgress.stateNode;631  let shouldUpdate;632  if (instance === null) {633    if (current !== null) {634      // An class component without an instance only mounts if it suspended635      // inside a non- concurrent tree, in an inconsistent state. We want to636      // tree it like a new mount, even though an empty version of it already637      // committed. Disconnect the alternate pointers.638      current.alternate = null;639      workInProgress.alternate = null;640      // Since this is conceptually a new fiber, schedule a Placement effect641      workInProgress.effectTag |= Placement;642    }643    // In the initial pass we might need to construct the instance.644    constructClassInstance(645      workInProgress,646      Component,647      nextProps,648      renderExpirationTime,649    );650    mountClassInstance(651      workInProgress,652      Component,653      nextProps,654      renderExpirationTime,655    );656    shouldUpdate = true;657  } else if (current === null) {658    // In a resume, we'll already have an instance we can reuse.659    shouldUpdate = resumeMountClassInstance(660      workInProgress,661      Component,662      nextProps,663      renderExpirationTime,664    );665  } else {666    shouldUpdate = updateClassInstance(667      current,668      workInProgress,669      Component,670      nextProps,671      renderExpirationTime,672    );673  }674  const nextUnitOfWork = finishClassComponent(675    current,676    workInProgress,677    Component,678    shouldUpdate,679    hasContext,680    renderExpirationTime,681  );682  if (__DEV__) {683    let inst = workInProgress.stateNode;684    if (inst.props !== nextProps) {685      warning(686        didWarnAboutReassigningProps,687        'It looks like %s is reassigning its own `this.props` while rendering. ' +688          'This is not supported and can lead to confusing bugs.',689        getComponentName(workInProgress.type) || 'a component',690      );691      didWarnAboutReassigningProps = true;692    }693  }694  return nextUnitOfWork;695}696function finishClassComponent(697  current: Fiber | null,698  workInProgress: Fiber,699  Component: any,700  shouldUpdate: boolean,701  hasContext: boolean,702  renderExpirationTime: ExpirationTime,703) {704  // Refs should update even if shouldComponentUpdate returns false705  markRef(current, workInProgress);706  const didCaptureError = (workInProgress.effectTag & DidCapture) !== NoEffect;707  if (!shouldUpdate && !didCaptureError) {708    // Context providers should defer to sCU for rendering709    if (hasContext) {710      invalidateContextProvider(workInProgress, Component, false);711    }712    return bailoutOnAlreadyFinishedWork(713      current,714      workInProgress,715      renderExpirationTime,716    );717  }718  const instance = workInProgress.stateNode;719  // Rerender720  ReactCurrentOwner.current = workInProgress;721  let nextChildren;722  if (723    didCaptureError &&724    typeof Component.getDerivedStateFromError !== 'function'725  ) {726    // If we captured an error, but getDerivedStateFrom catch is not defined,727    // unmount all the children. componentDidCatch will schedule an update to728    // re-render a fallback. This is temporary until we migrate everyone to729    // the new API.730    // TODO: Warn in a future release.731    nextChildren = null;732    if (enableProfilerTimer) {733      stopProfilerTimerIfRunning(workInProgress);734    }735  } else {736    if (__DEV__) {737      setCurrentPhase('render');738      nextChildren = instance.render();739      if (740        debugRenderPhaseSideEffects ||741        (debugRenderPhaseSideEffectsForStrictMode &&742          workInProgress.mode & StrictMode)743      ) {744        instance.render();745      }746      setCurrentPhase(null);747    } else {748      nextChildren = instance.render();749    }750  }751  // React DevTools reads this flag.752  workInProgress.effectTag |= PerformedWork;753  if (current !== null && didCaptureError) {754    // If we're recovering from an error, reconcile without reusing any of755    // the existing children. Conceptually, the normal children and the children756    // that are shown on error are two different sets, so we shouldn't reuse757    // normal children even if their identities match.758    forceUnmountCurrentAndReconcile(759      current,760      workInProgress,761      nextChildren,762      renderExpirationTime,763    );764  } else {765    reconcileChildren(766      current,767      workInProgress,768      nextChildren,769      renderExpirationTime,770    );771  }772  // Memoize state using the values we just used to render.773  // TODO: Restructure so we never read values from the instance.774  workInProgress.memoizedState = instance.state;775  // The context might have changed so we need to recalculate it.776  if (hasContext) {777    invalidateContextProvider(workInProgress, Component, true);778  }779  return workInProgress.child;780}781function pushHostRootContext(workInProgress) {782  const root = (workInProgress.stateNode: FiberRoot);783  if (root.pendingContext) {784    pushTopLevelContextObject(785      workInProgress,786      root.pendingContext,787      root.pendingContext !== root.context,788    );789  } else if (root.context) {790    // Should always be set791    pushTopLevelContextObject(workInProgress, root.context, false);792  }793  pushHostContainer(workInProgress, root.containerInfo);794}795function updateHostRoot(796  current, // FiberNode797  workInProgress, // éåFiberNode798  renderExpirationTime, // Sync799) {800  pushHostRootContext(workInProgress);801  const updateQueue = workInProgress.updateQueue;802  invariant(803    updateQueue !== null,804    'If the root does not have an updateQueue, we should have already ' +805      'bailed out. This error is likely caused by a bug in React. Please ' +806      'file an issue.',807  );808  const nextProps = workInProgress.pendingProps;809  const prevState = workInProgress.memoizedState;810  const prevChildren = prevState !== null ? prevState.element : null;811  processUpdateQueue(812    workInProgress,813    updateQueue,814    nextProps,815    null,816    renderExpirationTime,817  );818  const nextState = workInProgress.memoizedState; // å¼ä¸º{ element: "hello" }819  // Caution: React DevTools currently depends on this property820  // being called "element".821  const nextChildren = nextState.element; // 'hello'822  if (nextChildren === prevChildren) { // prevChildren = null823    // If the state is the same as before, that's a bailout because we had824    // no work that expires at this time.825    resetHydrationState();826    return bailoutOnAlreadyFinishedWork(827      current,828      workInProgress,829      renderExpirationTime,830    );831  }832  const root: FiberRoot = workInProgress.stateNode; // æåFiberRoot833  if (834    (current === null || current.child === null) &&835    root.hydrate &&836    enterHydrationState(workInProgress)837  ) {838    // If we don't have any current children this might be the first pass.839    // We always try to hydrate. If this isn't a hydration pass there won't840    // be any children to hydrate which is effectively the same thing as841    // not hydrating.842    // This is a bit of a hack. We track the host root as a placement to843    // know that we're currently in a mounting state. That way isMounted844    // works as expected. We must reset this before committing.845    // TODO: Delete this when we delete isMounted and findDOMNode.846    workInProgress.effectTag |= Placement;847    // Ensure that children mount into this root without tracking848    // side-effects. This ensures that we don't store Placement effects on849    // nodes that will be hydrated.850    workInProgress.child = mountChildFibers(851      workInProgress,852      null,853      nextChildren,854      renderExpirationTime,855    );856  } else {857    // Otherwise reset hydration state in case we aborted and resumed another858    // root.859    reconcileChildren(860      current,861      workInProgress,862      nextChildren,863      renderExpirationTime,864    );865    resetHydrationState();866  }867  return workInProgress.child;868}869function updateHostComponent(current, workInProgress, renderExpirationTime) {870  pushHostContext(workInProgress);871  if (current === null) {872    tryToClaimNextHydratableInstance(workInProgress);873  }874  const type = workInProgress.type;875  const nextProps = workInProgress.pendingProps;876  const prevProps = current !== null ? current.memoizedProps : null;877  let nextChildren = nextProps.children;878  const isDirectTextChild = shouldSetTextContent(type, nextProps);879  if (isDirectTextChild) {880    // We special case a direct text child of a host node. This is a common881    // case. We won't handle it as a reified child. We will instead handle882    // this in the host environment that also have access to this prop. That883    // avoids allocating another HostText fiber and traversing it.884    nextChildren = null;885  } else if (prevProps !== null && shouldSetTextContent(type, prevProps)) {886    // If we're switching from a direct text child to a normal child, or to887    // empty, we need to schedule the text content to be reset.888    workInProgress.effectTag |= ContentReset;889  }890  markRef(current, workInProgress);891  // Check the host config to see if the children are offscreen/hidden.892  if (893    renderExpirationTime !== Never &&894    workInProgress.mode & ConcurrentMode &&895    shouldDeprioritizeSubtree(type, nextProps)896  ) {897    // Schedule this fiber to re-render at offscreen priority. Then bailout.898    workInProgress.expirationTime = workInProgress.childExpirationTime = Never;899    return null;900  }901  reconcileChildren(902    current,903    workInProgress,904    nextChildren,905    renderExpirationTime,906  );907  return workInProgress.child;908}909function updateHostText(current, workInProgress) {910  if (current === null) {911    tryToClaimNextHydratableInstance(workInProgress);912  }913  // Nothing to do here. This is terminal. We'll do the completion step914  // immediately after.915  return null;916}917function mountLazyComponent(918  _current,919  workInProgress,920  elementType,921  updateExpirationTime,922  renderExpirationTime,923) {924  if (_current !== null) {925    // An lazy component only mounts if it suspended inside a non-926    // concurrent tree, in an inconsistent state. We want to treat it like927    // a new mount, even though an empty version of it already committed.928    // Disconnect the alternate pointers.929    _current.alternate = null;930    workInProgress.alternate = null;931    // Since this is conceptually a new fiber, schedule a Placement effect932    workInProgress.effectTag |= Placement;933  }934  const props = workInProgress.pendingProps;935  // We can't start a User Timing measurement with correct label yet.936  // Cancel and resume right after we know the tag.937  cancelWorkTimer(workInProgress);938  let Component = readLazyComponentType(elementType);939  // Store the unwrapped component in the type.940  workInProgress.type = Component;941  const resolvedTag = (workInProgress.tag = resolveLazyComponentTag(Component));942  startWorkTimer(workInProgress);943  const resolvedProps = resolveDefaultProps(Component, props);944  let child;945  switch (resolvedTag) {946    case FunctionComponent: {947      if (__DEV__) {948        validateFunctionComponentInDev(workInProgress, Component);949      }950      child = updateFunctionComponent(951        null,952        workInProgress,953        Component,954        resolvedProps,955        renderExpirationTime,956      );957      break;958    }959    case ClassComponent: {960      child = updateClassComponent(961        null,962        workInProgress,963        Component,964        resolvedProps,965        renderExpirationTime,966      );967      break;968    }969    case ForwardRef: {970      child = updateForwardRef(971        null,972        workInProgress,973        Component,974        resolvedProps,975        renderExpirationTime,976      );977      break;978    }979    case MemoComponent: {980      if (__DEV__) {981        if (workInProgress.type !== workInProgress.elementType) {982          const outerPropTypes = Component.propTypes;983          if (outerPropTypes) {984            checkPropTypes(985              outerPropTypes,986              resolvedProps, // Resolved for outer only987              'prop',988              getComponentName(Component),989              getCurrentFiberStackInDev,990            );991          }992        }993      }994      child = updateMemoComponent(995        null,996        workInProgress,997        Component,998        resolveDefaultProps(Component.type, resolvedProps), // The inner type can have defaults too999        updateExpirationTime,1000        renderExpirationTime,1001      );1002      break;1003    }1004    default: {1005      let hint = '';1006      if (__DEV__) {1007        if (1008          Component !== null &&1009          typeof Component === 'object' &&1010          Component.$$typeof === REACT_LAZY_TYPE1011        ) {1012          hint = ' Did you wrap a component in React.lazy() more than once?';1013        }1014      }1015      // This message intentionally doesn't mention ForwardRef or MemoComponent1016      // because the fact that it's a separate type of work is an1017      // implementation detail.1018      invariant(1019        false,1020        'Element type is invalid. Received a promise that resolves to: %s. ' +1021          'Lazy element type must resolve to a class or function.%s',1022        Component,1023        hint,1024      );1025    }1026  }1027  return child;1028}1029function mountIncompleteClassComponent(1030  _current,1031  workInProgress,1032  Component,1033  nextProps,1034  renderExpirationTime,1035) {1036  if (_current !== null) {1037    // An incomplete component only mounts if it suspended inside a non-1038    // concurrent tree, in an inconsistent state. We want to treat it like1039    // a new mount, even though an empty version of it already committed.1040    // Disconnect the alternate pointers.1041    _current.alternate = null;1042    workInProgress.alternate = null;1043    // Since this is conceptually a new fiber, schedule a Placement effect1044    workInProgress.effectTag |= Placement;1045  }1046  // Promote the fiber to a class and try rendering again.1047  workInProgress.tag = ClassComponent;1048  // The rest of this function is a fork of `updateClassComponent`1049  // Push context providers early to prevent context stack mismatches.1050  // During mounting we don't know the child context yet as the instance doesn't exist.1051  // We will invalidate the child context in finishClassComponent() right after rendering.1052  let hasContext;1053  if (isLegacyContextProvider(Component)) {1054    hasContext = true;1055    pushLegacyContextProvider(workInProgress);1056  } else {1057    hasContext = false;1058  }1059  prepareToReadContext(workInProgress, renderExpirationTime);1060  constructClassInstance(1061    workInProgress,1062    Component,1063    nextProps,1064    renderExpirationTime,1065  );1066  mountClassInstance(1067    workInProgress,1068    Component,1069    nextProps,1070    renderExpirationTime,1071  );1072  return finishClassComponent(1073    null,1074    workInProgress,1075    Component,1076    true,1077    hasContext,1078    renderExpirationTime,1079  );1080}1081function mountIndeterminateComponent(1082  _current,1083  workInProgress,1084  Component,1085  renderExpirationTime,1086) {1087  if (_current !== null) {1088    // An indeterminate component only mounts if it suspended inside a non-1089    // concurrent tree, in an inconsistent state. We want to treat it like1090    // a new mount, even though an empty version of it already committed.1091    // Disconnect the alternate pointers.1092    _current.alternate = null;1093    workInProgress.alternate = null;1094    // Since this is conceptually a new fiber, schedule a Placement effect1095    workInProgress.effectTag |= Placement;1096  }1097  const props = workInProgress.pendingProps;1098  const unmaskedContext = getUnmaskedContext(workInProgress, Component, false);1099  const context = getMaskedContext(workInProgress, unmaskedContext);1100  prepareToReadContext(workInProgress, renderExpirationTime);1101  let value;1102  if (__DEV__) {1103    if (1104      Component.prototype &&1105      typeof Component.prototype.render === 'function'1106    ) {1107      const componentName = getComponentName(Component) || 'Unknown';1108      if (!didWarnAboutBadClass[componentName]) {1109        warningWithoutStack(1110          false,1111          "The <%s /> component appears to have a render method, but doesn't extend React.Component. " +1112            'This is likely to cause errors. Change %s to extend React.Component instead.',1113          componentName,1114          componentName,1115        );1116        didWarnAboutBadClass[componentName] = true;1117      }1118    }1119    if (workInProgress.mode & StrictMode) {1120      ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, null);1121    }1122    ReactCurrentOwner.current = workInProgress;1123    value = renderWithHooks(1124      null,1125      workInProgress,1126      Component,1127      props,1128      context,1129      renderExpirationTime,1130    );1131  } else {1132    value = renderWithHooks(1133      null,1134      workInProgress,1135      Component,1136      props,1137      context,1138      renderExpirationTime,1139    );1140  }1141  // React DevTools reads this flag.1142  workInProgress.effectTag |= PerformedWork;1143  if (1144    typeof value === 'object' &&1145    value !== null &&1146    typeof value.render === 'function' &&1147    value.$$typeof === undefined1148  ) {1149    // Proceed under the assumption that this is a class instance1150    workInProgress.tag = ClassComponent;1151    // Throw out any hooks that were used.1152    resetHooks();1153    // Push context providers early to prevent context stack mismatches.1154    // During mounting we don't know the child context yet as the instance doesn't exist.1155    // We will invalidate the child context in finishClassComponent() right after rendering.1156    let hasContext = false;1157    if (isLegacyContextProvider(Component)) {1158      hasContext = true;1159      pushLegacyContextProvider(workInProgress);1160    } else {1161      hasContext = false;1162    }1163    workInProgress.memoizedState =1164      value.state !== null && value.state !== undefined ? value.state : null;1165    const getDerivedStateFromProps = Component.getDerivedStateFromProps;1166    if (typeof getDerivedStateFromProps === 'function') {1167      applyDerivedStateFromProps(1168        workInProgress,1169        Component,1170        getDerivedStateFromProps,1171        props,1172      );1173    }1174    adoptClassInstance(workInProgress, value);1175    mountClassInstance(workInProgress, Component, props, renderExpirationTime);1176    return finishClassComponent(1177      null,1178      workInProgress,1179      Component,1180      true,1181      hasContext,1182      renderExpirationTime,1183    );1184  } else {1185    // Proceed under the assumption that this is a function component1186    workInProgress.tag = FunctionComponent;1187    if (__DEV__) {1188      if (1189        debugRenderPhaseSideEffects ||1190        (debugRenderPhaseSideEffectsForStrictMode &&1191          workInProgress.mode & StrictMode)1192      ) {1193        // Only double-render components with Hooks1194        if (workInProgress.memoizedState !== null) {1195          value = renderWithHooks(1196            null,1197            workInProgress,1198            Component,1199            props,1200            context,1201            renderExpirationTime,1202          );1203        }1204      }1205    }1206    reconcileChildren(null, workInProgress, value, renderExpirationTime);1207    if (__DEV__) {1208      validateFunctionComponentInDev(workInProgress, Component);1209    }1210    return workInProgress.child;1211  }1212}1213function validateFunctionComponentInDev(workInProgress: Fiber, Component: any) {1214  if (Component) {1215    warningWithoutStack(1216      !Component.childContextTypes,1217      '%s(...): childContextTypes cannot be defined on a function component.',1218      Component.displayName || Component.name || 'Component',1219    );1220  }1221  if (workInProgress.ref !== null) {1222    let info = '';1223    const ownerName = getCurrentFiberOwnerNameInDevOrNull();1224    if (ownerName) {1225      info += '\n\nCheck the render method of `' + ownerName + '`.';1226    }1227    let warningKey = ownerName || workInProgress._debugID || '';...

Using AI Code Generation

1const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');2const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');3const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');4const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');5const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');6const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');7const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');8const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');9const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');10const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');11const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');12const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');13const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');14const { validateFunctionComponentInDev } = require('playwright-core/lib/server/frames');15const { validateFunctionComponentInDev

Using AI Code Generation

1const { validateFunctionComponentInDev } = require(‘@playwright/test/lib/utils/validateFunctionComponentInDev’);2validateFunctionComponentInDev(‘MyComponent’, MyComponent);3const { test } = require(‘@playwright/test’);4test(‘MyComponent test’, async ({ page }) => {5  await page.setContent(‘<MyComponent />’);6  await page.waitForSelector(‘text=MyComponent’);7});

Using AI Code Generation

1const { validateFunctionComponentInDev } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');2const code = `function Test() {3  return (4  );5}6`;7const ast = parse(code);8const result = validateFunctionComponentInDev(ast);9console.log(result);10{ type: 'FunctionComponent', name: 'Test' }

Using AI Code Generation

1const { validateFunctionComponentInDev } = require('playwright/lib/internalAPIs');2const { expect } = require('chai');3describe('Test', () => {4  it('should be able to validate function component', async () => {5    const result = await validateFunctionComponentInDev(ReactComponent);6    expect(result).to.be.true;7  });8});

Using AI Code Generation

1const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');2validateFunctionComponentInDev(() => {3});4const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');5validateFunctionComponentInDev(() => {6});7const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');8validateFunctionComponentInDev(() => {9});10const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');11validateFunctionComponentInDev(() => {12});13const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');14validateFunctionComponentInDev(() => {15});16const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');17validateFunctionComponentInDev(() => {18});19const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');20validateFunctionComponentInDev(() => {21});22const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');23validateFunctionComponentInDev(() => {24});25const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');26validateFunctionComponentInDev(() => {27});28const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');29validateFunctionComponentInDev(() => {30});31const { validateFunctionComponentInDev } = require('playwright/lib/server/supplements/utils/validateFunctionComponent');32validateFunctionComponentInDev(() => {33});

Using AI Code Generation

1const { validateFunctionComponentInDev } = require('playwright/lib/server/validateFunctionComponent');2validateFunctionComponentInDev(function() {3});4{ valid: true }5const { validateFunctionComponentInDev } = require('playwright/lib/server/validateFunctionComponent');6validateFunctionComponentInDev(function() {7});8{ valid: false, error: 'Invalid component' }

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.