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How to use checkDepsAreArrayDev method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberHooks.js

Source:ReactFiberHooks.js

...180      }181    }182  }183}184function checkDepsAreArrayDev(deps: mixed) {185  if (__DEV__) {186    if (deps !== undefined && deps !== null && !Array.isArray(deps)) {187      // Verify deps, but only on mount to avoid extra checks.188      // It's unlikely their type would change as usually you define them inline.189      warning(190        false,191        '%s received a final argument that is not an array (instead, received `%s`). When ' +192          'specified, the final argument must be an array.',193        currentHookNameInDev,194        typeof deps,195      );196    }197  }198}199function warnOnHookMismatchInDev(currentHookName: HookType) {200  if (__DEV__) {201    const componentName = getComponentName(202      ((currentlyRenderingFiber: any): Fiber).type,203    );204    if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) {205      didWarnAboutMismatchedHooksForComponent.add(componentName);206      if (hookTypesDev !== null) {207        let table = '';208        const secondColumnStart = 30;209        for (let i = 0; i <= ((hookTypesUpdateIndexDev: any): number); i++) {210          const oldHookName = hookTypesDev[i];211          const newHookName =212            i === ((hookTypesUpdateIndexDev: any): number)213              ? currentHookName214              : oldHookName;215          let row = `${i + 1}. ${oldHookName}`;216          // Extra space so second column lines up217          // lol @ IE not supporting String#repeat218          while (row.length < secondColumnStart) {219            row += ' ';220          }221          row += newHookName + '\n';222          table += row;223        }224        warning(225          false,226          'React has detected a change in the order of Hooks called by %s. ' +227            'This will lead to bugs and errors if not fixed. ' +228            'For more information, read the Rules of Hooks: https://fb.me/rules-of-hooks\n\n' +229            '   Previous render            Next render\n' +230            '   ------------------------------------------------------\n' +231            '%s' +232            '   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n',233          componentName,234          table,235        );236      }237    }238  }239}240function throwInvalidHookError() {241  invariant(242    false,243    'Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for' +244      ' one of the following reasons:\n' +245      '1. You might have mismatching versions of React and the renderer (such as React DOM)\n' +246      '2. You might be breaking the Rules of Hooks\n' +247      '3. You might have more than one copy of React in the same app\n' +248      'See https://fb.me/react-invalid-hook-call for tips about how to debug and fix this problem.',249  );250}251function areHookInputsEqual(252  nextDeps: Array<mixed>,253  prevDeps: Array<mixed> | null,254) {255  if (prevDeps === null) {256    if (__DEV__) {257      warning(258        false,259        '%s received a final argument during this render, but not during ' +260          'the previous render. Even though the final argument is optional, ' +261          'its type cannot change between renders.',262        currentHookNameInDev,263      );264    }265    return false;266  }267  if (__DEV__) {268    // Don't bother comparing lengths in prod because these arrays should be269    // passed inline.270    if (nextDeps.length !== prevDeps.length) {271      warning(272        false,273        'The final argument passed to %s changed size between renders. The ' +274          'order and size of this array must remain constant.\n\n' +275          'Previous: %s\n' +276          'Incoming: %s',277        currentHookNameInDev,278        `[${prevDeps.join(', ')}]`,279        `[${nextDeps.join(', ')}]`,280      );281    }282  }283  for (let i = 0; i < prevDeps.length && i < nextDeps.length; i++) {284    if (is(nextDeps[i], prevDeps[i])) {285      continue;286    }287    return false;288  }289  return true;290}291export function renderWithHooks(292  current: Fiber | null,293  workInProgress: Fiber,294  Component: any,295  props: any,296  refOrContext: any,297  nextRenderExpirationTime: ExpirationTime,298): any {299  renderExpirationTime = nextRenderExpirationTime;300  currentlyRenderingFiber = workInProgress;301  nextCurrentHook = current !== null ? current.memoizedState : null;302  if (__DEV__) {303    hookTypesDev =304      current !== null305        ? ((current._debugHookTypes: any): Array<HookType>)306        : null;307    hookTypesUpdateIndexDev = -1;308  }309  // The following should have already been reset310  // currentHook = null;311  // workInProgressHook = null;312  // remainingExpirationTime = NoWork;313  // componentUpdateQueue = null;314  // didScheduleRenderPhaseUpdate = false;315  // renderPhaseUpdates = null;316  // numberOfReRenders = 0;317  // sideEffectTag = 0;318  // TODO Warn if no hooks are used at all during mount, then some are used during update.319  // Currently we will identify the update render as a mount because nextCurrentHook === null.320  // This is tricky because it's valid for certain types of components (e.g. React.lazy)321  // Using nextCurrentHook to differentiate between mount/update only works if at least one stateful hook is used.322  // Non-stateful hooks (e.g. context) don't get added to memoizedState,323  // so nextCurrentHook would be null during updates and mounts.324  if (__DEV__) {325    if (nextCurrentHook !== null) {326      ReactCurrentDispatcher.current = HooksDispatcherOnUpdateInDEV;327    } else if (hookTypesDev !== null) {328      // This dispatcher handles an edge case where a component is updating,329      // but no stateful hooks have been used.330      // We want to match the production code behavior (which will use HooksDispatcherOnMount),331      // but with the extra DEV validation to ensure hooks ordering hasn't changed.332      // This dispatcher does that.333      ReactCurrentDispatcher.current = HooksDispatcherOnMountWithHookTypesInDEV;334    } else {335      ReactCurrentDispatcher.current = HooksDispatcherOnMountInDEV;336    }337  } else {338    ReactCurrentDispatcher.current =339      nextCurrentHook === null340        ? HooksDispatcherOnMount341        : HooksDispatcherOnUpdate;342  }343  let children = Component(props, refOrContext);344  if (didScheduleRenderPhaseUpdate) {345    do {346      didScheduleRenderPhaseUpdate = false;347      numberOfReRenders += 1;348      // Start over from the beginning of the list349      nextCurrentHook = current !== null ? current.memoizedState : null;350      nextWorkInProgressHook = firstWorkInProgressHook;351      currentHook = null;352      workInProgressHook = null;353      componentUpdateQueue = null;354      if (__DEV__) {355        // Also validate hook order for cascading updates.356        hookTypesUpdateIndexDev = -1;357      }358      ReactCurrentDispatcher.current = __DEV__359        ? HooksDispatcherOnUpdateInDEV360        : HooksDispatcherOnUpdate;361      children = Component(props, refOrContext);362    } while (didScheduleRenderPhaseUpdate);363    renderPhaseUpdates = null;364    numberOfReRenders = 0;365  }366  // We can assume the previous dispatcher is always this one, since we set it367  // at the beginning of the render phase and there's no re-entrancy.368  ReactCurrentDispatcher.current = ContextOnlyDispatcher;369  const renderedWork: Fiber = (currentlyRenderingFiber: any);370  renderedWork.memoizedState = firstWorkInProgressHook;371  renderedWork.expirationTime = remainingExpirationTime;372  renderedWork.updateQueue = (componentUpdateQueue: any);373  renderedWork.effectTag |= sideEffectTag;374  if (__DEV__) {375    renderedWork._debugHookTypes = hookTypesDev;376  }377  // This check uses currentHook so that it works the same in DEV and prod bundles.378  // hookTypesDev could catch more cases (e.g. context) but only in DEV bundles.379  const didRenderTooFewHooks =380    currentHook !== null && currentHook.next !== null;381  renderExpirationTime = NoWork;382  currentlyRenderingFiber = null;383  currentHook = null;384  nextCurrentHook = null;385  firstWorkInProgressHook = null;386  workInProgressHook = null;387  nextWorkInProgressHook = null;388  if (__DEV__) {389    currentHookNameInDev = null;390    hookTypesDev = null;391    hookTypesUpdateIndexDev = -1;392  }393  remainingExpirationTime = NoWork;394  componentUpdateQueue = null;395  sideEffectTag = 0;396  // These were reset above397  // didScheduleRenderPhaseUpdate = false;398  // renderPhaseUpdates = null;399  // numberOfReRenders = 0;400  invariant(401    !didRenderTooFewHooks,402    'Rendered fewer hooks than expected. This may be caused by an accidental ' +403      'early return statement.',404  );405  return children;406}407export function bailoutHooks(408  current: Fiber,409  workInProgress: Fiber,410  expirationTime: ExpirationTime,411) {412  workInProgress.updateQueue = current.updateQueue;413  workInProgress.effectTag &= ~(PassiveEffect | UpdateEffect);414  if (current.expirationTime <= expirationTime) {415    current.expirationTime = NoWork;416  }417}418export function resetHooks(): void {419  // We can assume the previous dispatcher is always this one, since we set it420  // at the beginning of the render phase and there's no re-entrancy.421  ReactCurrentDispatcher.current = ContextOnlyDispatcher;422  // This is used to reset the state of this module when a component throws.423  // It's also called inside mountIndeterminateComponent if we determine the424  // component is a module-style component.425  renderExpirationTime = NoWork;426  currentlyRenderingFiber = null;427  currentHook = null;428  nextCurrentHook = null;429  firstWorkInProgressHook = null;430  workInProgressHook = null;431  nextWorkInProgressHook = null;432  if (__DEV__) {433    hookTypesDev = null;434    hookTypesUpdateIndexDev = -1;435    currentHookNameInDev = null;436  }437  remainingExpirationTime = NoWork;438  componentUpdateQueue = null;439  sideEffectTag = 0;440  didScheduleRenderPhaseUpdate = false;441  renderPhaseUpdates = null;442  numberOfReRenders = 0;443}444function mountWorkInProgressHook(): Hook {445  const hook: Hook = {446    memoizedState: null,447    baseState: null,448    queue: null,449    baseUpdate: null,450    next: null,451  };452  if (workInProgressHook === null) {453    // This is the first hook in the list454    firstWorkInProgressHook = workInProgressHook = hook;455  } else {456    // Append to the end of the list457    workInProgressHook = workInProgressHook.next = hook;458  }459  return workInProgressHook;460}461function updateWorkInProgressHook(): Hook {462  // This function is used both for updates and for re-renders triggered by a463  // render phase update. It assumes there is either a current hook we can464  // clone, or a work-in-progress hook from a previous render pass that we can465  // use as a base. When we reach the end of the base list, we must switch to466  // the dispatcher used for mounts.467  if (nextWorkInProgressHook !== null) {468    // There's already a work-in-progress. Reuse it.469    workInProgressHook = nextWorkInProgressHook;470    nextWorkInProgressHook = workInProgressHook.next;471    currentHook = nextCurrentHook;472    nextCurrentHook = currentHook !== null ? currentHook.next : null;473  } else {474    // Clone from the current hook.475    invariant(476      nextCurrentHook !== null,477      'Rendered more hooks than during the previous render.',478    );479    currentHook = nextCurrentHook;480    const newHook: Hook = {481      memoizedState: currentHook.memoizedState,482      baseState: currentHook.baseState,483      queue: currentHook.queue,484      baseUpdate: currentHook.baseUpdate,485      next: null,486    };487    if (workInProgressHook === null) {488      // This is the first hook in the list.489      workInProgressHook = firstWorkInProgressHook = newHook;490    } else {491      // Append to the end of the list.492      workInProgressHook = workInProgressHook.next = newHook;493    }494    nextCurrentHook = currentHook.next;495  }496  return workInProgressHook;497}498function createFunctionComponentUpdateQueue(): FunctionComponentUpdateQueue {499  return {500    lastEffect: null,501  };502}503function basicStateReducer<S>(state: S, action: BasicStateAction<S>): S {504  return typeof action === 'function' ? action(state) : action;505}506function mountReducer<S, I, A>(507  reducer: (S, A) => S,508  initialArg: I,509  init?: I => S,510): [S, Dispatch<A>] {511  const hook = mountWorkInProgressHook();512  let initialState;513  if (init !== undefined) {514    initialState = init(initialArg);515  } else {516    initialState = ((initialArg: any): S);517  }518  hook.memoizedState = hook.baseState = initialState;519  const queue = (hook.queue = {520    last: null,521    dispatch: null,522    lastRenderedReducer: reducer,523    lastRenderedState: (initialState: any),524  });525  const dispatch: Dispatch<A> = (queue.dispatch = (dispatchAction.bind(526    null,527    // Flow doesn't know this is non-null, but we do.528    ((currentlyRenderingFiber: any): Fiber),529    queue,530  ): any));531  return [hook.memoizedState, dispatch];532}533function updateReducer<S, I, A>(534  reducer: (S, A) => S,535  initialArg: I,536  init?: I => S,537): [S, Dispatch<A>] {538  const hook = updateWorkInProgressHook();539  const queue = hook.queue;540  invariant(541    queue !== null,542    'Should have a queue. This is likely a bug in React. Please file an issue.',543  );544  queue.lastRenderedReducer = reducer;545  if (numberOfReRenders > 0) {546    // This is a re-render. Apply the new render phase updates to the previous547    // work-in-progress hook.548    const dispatch: Dispatch<A> = (queue.dispatch: any);549    if (renderPhaseUpdates !== null) {550      // Render phase updates are stored in a map of queue -> linked list551      const firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);552      if (firstRenderPhaseUpdate !== undefined) {553        renderPhaseUpdates.delete(queue);554        let newState = hook.memoizedState;555        let update = firstRenderPhaseUpdate;556        do {557          // Process this render phase update. We don't have to check the558          // priority because it will always be the same as the current559          // render's.560          const action = update.action;561          newState = reducer(newState, action);562          update = update.next;563        } while (update !== null);564        // Mark that the fiber performed work, but only if the new state is565        // different from the current state.566        if (!is(newState, hook.memoizedState)) {567          markWorkInProgressReceivedUpdate();568        }569        hook.memoizedState = newState;570        // Don't persist the state accumlated from the render phase updates to571        // the base state unless the queue is empty.572        // TODO: Not sure if this is the desired semantics, but it's what we573        // do for gDSFP. I can't remember why.574        if (hook.baseUpdate === queue.last) {575          hook.baseState = newState;576        }577        queue.lastRenderedState = newState;578        return [newState, dispatch];579      }580    }581    return [hook.memoizedState, dispatch];582  }583  // The last update in the entire queue584  const last = queue.last;585  // The last update that is part of the base state.586  const baseUpdate = hook.baseUpdate;587  const baseState = hook.baseState;588  // Find the first unprocessed update.589  let first;590  if (baseUpdate !== null) {591    if (last !== null) {592      // For the first update, the queue is a circular linked list where593      // `queue.last.next = queue.first`. Once the first update commits, and594      // the `baseUpdate` is no longer empty, we can unravel the list.595      last.next = null;596    }597    first = baseUpdate.next;598  } else {599    first = last !== null ? last.next : null;600  }601  if (first !== null) {602    let newState = baseState;603    let newBaseState = null;604    let newBaseUpdate = null;605    let prevUpdate = baseUpdate;606    let update = first;607    let didSkip = false;608    do {609      const updateExpirationTime = update.expirationTime;610      if (updateExpirationTime < renderExpirationTime) {611        // Priority is insufficient. Skip this update. If this is the first612        // skipped update, the previous update/state is the new base613        // update/state.614        if (!didSkip) {615          didSkip = true;616          newBaseUpdate = prevUpdate;617          newBaseState = newState;618        }619        // Update the remaining priority in the queue.620        if (updateExpirationTime > remainingExpirationTime) {621          remainingExpirationTime = updateExpirationTime;622        }623      } else {624        // This update does have sufficient priority.625        // Mark the event time of this update as relevant to this render pass.626        // TODO: This should ideally use the true event time of this update rather than627        // its priority which is a derived and not reverseable value.628        // TODO: We should skip this update if it was already committed but currently629        // we have no way of detecting the difference between a committed and suspended630        // update here.631        markRenderEventTime(updateExpirationTime);632        // Process this update.633        if (update.eagerReducer === reducer) {634          // If this update was processed eagerly, and its reducer matches the635          // current reducer, we can use the eagerly computed state.636          newState = ((update.eagerState: any): S);637        } else {638          const action = update.action;639          newState = reducer(newState, action);640        }641      }642      prevUpdate = update;643      update = update.next;644    } while (update !== null && update !== first);645    if (!didSkip) {646      newBaseUpdate = prevUpdate;647      newBaseState = newState;648    }649    // Mark that the fiber performed work, but only if the new state is650    // different from the current state.651    if (!is(newState, hook.memoizedState)) {652      markWorkInProgressReceivedUpdate();653    }654    hook.memoizedState = newState;655    hook.baseUpdate = newBaseUpdate;656    hook.baseState = newBaseState;657    queue.lastRenderedState = newState;658  }659  const dispatch: Dispatch<A> = (queue.dispatch: any);660  return [hook.memoizedState, dispatch];661}662function mountState<S>(663  initialState: (() => S) | S,664): [S, Dispatch<BasicStateAction<S>>] {665  const hook = mountWorkInProgressHook();666  if (typeof initialState === 'function') {667    initialState = initialState();668  }669  hook.memoizedState = hook.baseState = initialState;670  const queue = (hook.queue = {671    last: null,672    dispatch: null,673    lastRenderedReducer: basicStateReducer,674    lastRenderedState: (initialState: any),675  });676  const dispatch: Dispatch<677    BasicStateAction<S>,678  > = (queue.dispatch = (dispatchAction.bind(679    null,680    // Flow doesn't know this is non-null, but we do.681    ((currentlyRenderingFiber: any): Fiber),682    queue,683  ): any));684  return [hook.memoizedState, dispatch];685}686function updateState<S>(687  initialState: (() => S) | S,688): [S, Dispatch<BasicStateAction<S>>] {689  return updateReducer(basicStateReducer, (initialState: any));690}691function pushEffect(tag, create, destroy, deps) {692  const effect: Effect = {693    tag,694    create,695    destroy,696    deps,697    // Circular698    next: (null: any),699  };700  if (componentUpdateQueue === null) {701    componentUpdateQueue = createFunctionComponentUpdateQueue();702    componentUpdateQueue.lastEffect = effect.next = effect;703  } else {704    const lastEffect = componentUpdateQueue.lastEffect;705    if (lastEffect === null) {706      componentUpdateQueue.lastEffect = effect.next = effect;707    } else {708      const firstEffect = lastEffect.next;709      lastEffect.next = effect;710      effect.next = firstEffect;711      componentUpdateQueue.lastEffect = effect;712    }713  }714  return effect;715}716function mountRef<T>(initialValue: T): {current: T} {717  const hook = mountWorkInProgressHook();718  const ref = {current: initialValue};719  if (__DEV__) {720    Object.seal(ref);721  }722  hook.memoizedState = ref;723  return ref;724}725function updateRef<T>(initialValue: T): {current: T} {726  const hook = updateWorkInProgressHook();727  return hook.memoizedState;728}729function mountEffectImpl(fiberEffectTag, hookEffectTag, create, deps): void {730  const hook = mountWorkInProgressHook();731  const nextDeps = deps === undefined ? null : deps;732  sideEffectTag |= fiberEffectTag;733  hook.memoizedState = pushEffect(hookEffectTag, create, undefined, nextDeps);734}735function updateEffectImpl(fiberEffectTag, hookEffectTag, create, deps): void {736  const hook = updateWorkInProgressHook();737  const nextDeps = deps === undefined ? null : deps;738  let destroy = undefined;739  if (currentHook !== null) {740    const prevEffect = currentHook.memoizedState;741    destroy = prevEffect.destroy;742    if (nextDeps !== null) {743      const prevDeps = prevEffect.deps;744      if (areHookInputsEqual(nextDeps, prevDeps)) {745        pushEffect(NoHookEffect, create, destroy, nextDeps);746        return;747      }748    }749  }750  sideEffectTag |= fiberEffectTag;751  hook.memoizedState = pushEffect(hookEffectTag, create, destroy, nextDeps);752}753function mountEffect(754  create: () => (() => void) | void,755  deps: Array<mixed> | void | null,756): void {757  return mountEffectImpl(758    UpdateEffect | PassiveEffect,759    UnmountPassive | MountPassive,760    create,761    deps,762  );763}764function updateEffect(765  create: () => (() => void) | void,766  deps: Array<mixed> | void | null,767): void {768  return updateEffectImpl(769    UpdateEffect | PassiveEffect,770    UnmountPassive | MountPassive,771    create,772    deps,773  );774}775function mountLayoutEffect(776  create: () => (() => void) | void,777  deps: Array<mixed> | void | null,778): void {779  return mountEffectImpl(780    UpdateEffect,781    UnmountMutation | MountLayout,782    create,783    deps,784  );785}786function updateLayoutEffect(787  create: () => (() => void) | void,788  deps: Array<mixed> | void | null,789): void {790  return updateEffectImpl(791    UpdateEffect,792    UnmountMutation | MountLayout,793    create,794    deps,795  );796}797function imperativeHandleEffect<T>(798  create: () => T,799  ref: {current: T | null} | ((inst: T | null) => mixed) | null | void,800) {801  if (typeof ref === 'function') {802    const refCallback = ref;803    const inst = create();804    refCallback(inst);805    return () => {806      refCallback(null);807    };808  } else if (ref !== null && ref !== undefined) {809    const refObject = ref;810    if (__DEV__) {811      warning(812        refObject.hasOwnProperty('current'),813        'Expected useImperativeHandle() first argument to either be a ' +814          'ref callback or React.createRef() object. Instead received: %s.',815        'an object with keys {' + Object.keys(refObject).join(', ') + '}',816      );817    }818    const inst = create();819    refObject.current = inst;820    return () => {821      refObject.current = null;822    };823  }824}825function mountImperativeHandle<T>(826  ref: {current: T | null} | ((inst: T | null) => mixed) | null | void,827  create: () => T,828  deps: Array<mixed> | void | null,829): void {830  if (__DEV__) {831    warning(832      typeof create === 'function',833      'Expected useImperativeHandle() second argument to be a function ' +834        'that creates a handle. Instead received: %s.',835      create !== null ? typeof create : 'null',836    );837  }838  // TODO: If deps are provided, should we skip comparing the ref itself?839  const effectDeps =840    deps !== null && deps !== undefined ? deps.concat([ref]) : null;841  return mountEffectImpl(842    UpdateEffect,843    UnmountMutation | MountLayout,844    imperativeHandleEffect.bind(null, create, ref),845    effectDeps,846  );847}848function updateImperativeHandle<T>(849  ref: {current: T | null} | ((inst: T | null) => mixed) | null | void,850  create: () => T,851  deps: Array<mixed> | void | null,852): void {853  if (__DEV__) {854    warning(855      typeof create === 'function',856      'Expected useImperativeHandle() second argument to be a function ' +857        'that creates a handle. Instead received: %s.',858      create !== null ? typeof create : 'null',859    );860  }861  // TODO: If deps are provided, should we skip comparing the ref itself?862  const effectDeps =863    deps !== null && deps !== undefined ? deps.concat([ref]) : null;864  return updateEffectImpl(865    UpdateEffect,866    UnmountMutation | MountLayout,867    imperativeHandleEffect.bind(null, create, ref),868    effectDeps,869  );870}871function mountDebugValue<T>(value: T, formatterFn: ?(value: T) => mixed): void {872  // This hook is normally a no-op.873  // The react-debug-hooks package injects its own implementation874  // so that e.g. DevTools can display custom hook values.875}876const updateDebugValue = mountDebugValue;877function mountCallback<T>(callback: T, deps: Array<mixed> | void | null): T {878  const hook = mountWorkInProgressHook();879  const nextDeps = deps === undefined ? null : deps;880  hook.memoizedState = [callback, nextDeps];881  return callback;882}883function updateCallback<T>(callback: T, deps: Array<mixed> | void | null): T {884  const hook = updateWorkInProgressHook();885  const nextDeps = deps === undefined ? null : deps;886  const prevState = hook.memoizedState;887  if (prevState !== null) {888    if (nextDeps !== null) {889      const prevDeps: Array<mixed> | null = prevState[1];890      if (areHookInputsEqual(nextDeps, prevDeps)) {891        return prevState[0];892      }893    }894  }895  hook.memoizedState = [callback, nextDeps];896  return callback;897}898function mountMemo<T>(899  nextCreate: () => T,900  deps: Array<mixed> | void | null,901): T {902  const hook = mountWorkInProgressHook();903  const nextDeps = deps === undefined ? null : deps;904  const nextValue = nextCreate();905  hook.memoizedState = [nextValue, nextDeps];906  return nextValue;907}908function updateMemo<T>(909  nextCreate: () => T,910  deps: Array<mixed> | void | null,911): T {912  const hook = updateWorkInProgressHook();913  const nextDeps = deps === undefined ? null : deps;914  const prevState = hook.memoizedState;915  if (prevState !== null) {916    // Assume these are defined. If they're not, areHookInputsEqual will warn.917    if (nextDeps !== null) {918      const prevDeps: Array<mixed> | null = prevState[1];919      if (areHookInputsEqual(nextDeps, prevDeps)) {920        return prevState[0];921      }922    }923  }924  const nextValue = nextCreate();925  hook.memoizedState = [nextValue, nextDeps];926  return nextValue;927}928function dispatchAction<S, A>(929  fiber: Fiber,930  queue: UpdateQueue<S, A>,931  action: A,932) {933  invariant(934    numberOfReRenders < RE_RENDER_LIMIT,935    'Too many re-renders. React limits the number of renders to prevent ' +936      'an infinite loop.',937  );938  if (__DEV__) {939    warning(940      arguments.length <= 3,941      "State updates from the useState() and useReducer() Hooks don't support the " +942        'second callback argument. To execute a side effect after ' +943        'rendering, declare it in the component body with useEffect().',944    );945  }946  const alternate = fiber.alternate;947  if (948    fiber === currentlyRenderingFiber ||949    (alternate !== null && alternate === currentlyRenderingFiber)950  ) {951    // This is a render phase update. Stash it in a lazily-created map of952    // queue -> linked list of updates. After this render pass, we'll restart953    // and apply the stashed updates on top of the work-in-progress hook.954    didScheduleRenderPhaseUpdate = true;955    const update: Update<S, A> = {956      expirationTime: renderExpirationTime,957      action,958      eagerReducer: null,959      eagerState: null,960      next: null,961    };962    if (renderPhaseUpdates === null) {963      renderPhaseUpdates = new Map();964    }965    const firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);966    if (firstRenderPhaseUpdate === undefined) {967      renderPhaseUpdates.set(queue, update);968    } else {969      // Append the update to the end of the list.970      let lastRenderPhaseUpdate = firstRenderPhaseUpdate;971      while (lastRenderPhaseUpdate.next !== null) {972        lastRenderPhaseUpdate = lastRenderPhaseUpdate.next;973      }974      lastRenderPhaseUpdate.next = update;975    }976  } else {977    flushPassiveEffects();978    const currentTime = requestCurrentTime();979    const expirationTime = computeExpirationForFiber(currentTime, fiber);980    const update: Update<S, A> = {981      expirationTime,982      action,983      eagerReducer: null,984      eagerState: null,985      next: null,986    };987    // Append the update to the end of the list.988    const last = queue.last;989    if (last === null) {990      // This is the first update. Create a circular list.991      update.next = update;992    } else {993      const first = last.next;994      if (first !== null) {995        // Still circular.996        update.next = first;997      }998      last.next = update;999    }1000    queue.last = update;1001    if (1002      fiber.expirationTime === NoWork &&1003      (alternate === null || alternate.expirationTime === NoWork)1004    ) {1005      // The queue is currently empty, which means we can eagerly compute the1006      // next state before entering the render phase. If the new state is the1007      // same as the current state, we may be able to bail out entirely.1008      const lastRenderedReducer = queue.lastRenderedReducer;1009      if (lastRenderedReducer !== null) {1010        let prevDispatcher;1011        if (__DEV__) {1012          prevDispatcher = ReactCurrentDispatcher.current;1013          ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;1014        }1015        try {1016          const currentState: S = (queue.lastRenderedState: any);1017          const eagerState = lastRenderedReducer(currentState, action);1018          // Stash the eagerly computed state, and the reducer used to compute1019          // it, on the update object. If the reducer hasn't changed by the1020          // time we enter the render phase, then the eager state can be used1021          // without calling the reducer again.1022          update.eagerReducer = lastRenderedReducer;1023          update.eagerState = eagerState;1024          if (is(eagerState, currentState)) {1025            // Fast path. We can bail out without scheduling React to re-render.1026            // It's still possible that we'll need to rebase this update later,1027            // if the component re-renders for a different reason and by that1028            // time the reducer has changed.1029            return;1030          }1031        } catch (error) {1032          // Suppress the error. It will throw again in the render phase.1033        } finally {1034          if (__DEV__) {1035            ReactCurrentDispatcher.current = prevDispatcher;1036          }1037        }1038      }1039    }1040    if (__DEV__) {1041      // jest isn't a 'global', it's just exposed to tests via a wrapped function1042      // further, this isn't a test file, so flow doesn't recognize the symbol. So...1043      // $FlowExpectedError - because requirements don't give a damn about your type sigs.1044      if ('undefined' !== typeof jest) {1045        warnIfNotCurrentlyActingUpdatesInDev(fiber);1046      }1047    }1048    scheduleWork(fiber, expirationTime);1049  }1050}1051export const ContextOnlyDispatcher: Dispatcher = {1052  readContext,1053  useCallback: throwInvalidHookError,1054  useContext: throwInvalidHookError,1055  useEffect: throwInvalidHookError,1056  useImperativeHandle: throwInvalidHookError,1057  useLayoutEffect: throwInvalidHookError,1058  useMemo: throwInvalidHookError,1059  useReducer: throwInvalidHookError,1060  useRef: throwInvalidHookError,1061  useState: throwInvalidHookError,1062  useDebugValue: throwInvalidHookError,1063};1064const HooksDispatcherOnMount: Dispatcher = {1065  readContext,1066  useCallback: mountCallback,1067  useContext: readContext,1068  useEffect: mountEffect,1069  useImperativeHandle: mountImperativeHandle,1070  useLayoutEffect: mountLayoutEffect,1071  useMemo: mountMemo,1072  useReducer: mountReducer,1073  useRef: mountRef,1074  useState: mountState,1075  useDebugValue: mountDebugValue,1076};1077const HooksDispatcherOnUpdate: Dispatcher = {1078  readContext,1079  useCallback: updateCallback,1080  useContext: readContext,1081  useEffect: updateEffect,1082  useImperativeHandle: updateImperativeHandle,1083  useLayoutEffect: updateLayoutEffect,1084  useMemo: updateMemo,1085  useReducer: updateReducer,1086  useRef: updateRef,1087  useState: updateState,1088  useDebugValue: updateDebugValue,1089};1090let HooksDispatcherOnMountInDEV: Dispatcher | null = null;1091let HooksDispatcherOnMountWithHookTypesInDEV: Dispatcher | null = null;1092let HooksDispatcherOnUpdateInDEV: Dispatcher | null = null;1093let InvalidNestedHooksDispatcherOnMountInDEV: Dispatcher | null = null;1094let InvalidNestedHooksDispatcherOnUpdateInDEV: Dispatcher | null = null;1095if (__DEV__) {1096  const warnInvalidContextAccess = () => {1097    warning(1098      false,1099      'Context can only be read while React is rendering. ' +1100        'In classes, you can read it in the render method or getDerivedStateFromProps. ' +1101        'In function components, you can read it directly in the function body, but not ' +1102        'inside Hooks like useReducer() or useMemo().',1103    );1104  };1105  const warnInvalidHookAccess = () => {1106    warning(1107      false,1108      'Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. ' +1109        'You can only call Hooks at the top level of your React function. ' +1110        'For more information, see ' +1111        'https://fb.me/rules-of-hooks',1112    );1113  };1114  HooksDispatcherOnMountInDEV = {1115    readContext<T>(1116      context: ReactContext<T>,1117      observedBits: void | number | boolean,1118    ): T {1119      return readContext(context, observedBits);1120    },1121    useCallback<T>(callback: T, deps: Array<mixed> | void | null): T {1122      currentHookNameInDev = 'useCallback';1123      mountHookTypesDev();1124      checkDepsAreArrayDev(deps);1125      return mountCallback(callback, deps);1126    },1127    useContext<T>(1128      context: ReactContext<T>,1129      observedBits: void | number | boolean,1130    ): T {1131      currentHookNameInDev = 'useContext';1132      mountHookTypesDev();1133      return readContext(context, observedBits);1134    },1135    useEffect(1136      create: () => (() => void) | void,1137      deps: Array<mixed> | void | null,1138    ): void {1139      currentHookNameInDev = 'useEffect';1140      mountHookTypesDev();1141      checkDepsAreArrayDev(deps);1142      return mountEffect(create, deps);1143    },1144    useImperativeHandle<T>(1145      ref: {current: T | null} | ((inst: T | null) => mixed) | null | void,1146      create: () => T,1147      deps: Array<mixed> | void | null,1148    ): void {1149      currentHookNameInDev = 'useImperativeHandle';1150      mountHookTypesDev();1151      checkDepsAreArrayDev(deps);1152      return mountImperativeHandle(ref, create, deps);1153    },1154    useLayoutEffect(1155      create: () => (() => void) | void,1156      deps: Array<mixed> | void | null,1157    ): void {1158      currentHookNameInDev = 'useLayoutEffect';1159      mountHookTypesDev();1160      checkDepsAreArrayDev(deps);1161      return mountLayoutEffect(create, deps);1162    },1163    useMemo<T>(create: () => T, deps: Array<mixed> | void | null): T {1164      currentHookNameInDev = 'useMemo';1165      mountHookTypesDev();1166      checkDepsAreArrayDev(deps);1167      const prevDispatcher = ReactCurrentDispatcher.current;1168      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;1169      try {1170        return mountMemo(create, deps);1171      } finally {1172        ReactCurrentDispatcher.current = prevDispatcher;1173      }1174    },1175    useReducer<S, I, A>(1176      reducer: (S, A) => S,1177      initialArg: I,1178      init?: I => S,1179    ): [S, Dispatch<A>] {1180      currentHookNameInDev = 'useReducer';...

Using AI Code Generation

1const playwright = require('playwright');2const { checkDepsAreArrayDev } = playwright;3checkDepsAreArrayDev(['a', 'b']);4const playwright = require('playwright');5const { checkDepsAreArrayDev } = playwright;6checkDepsAreArrayDev(['a', 'b']);7const playwright = require('playwright');8const { checkDepsAreArrayDev } = playwright;9checkDepsAreArrayDev(['a', 'b']);10const playwright = require('playwright');11const { checkDepsAreArrayDev } = playwright;12checkDepsAreArrayDev(['a', 'b']);13const playwright = require('playwright');14const { checkDepsAreArrayDev } = playwright;15checkDepsAreArrayDev(['a', 'b']);16const playwright = require('playwright');17const { checkDepsAreArrayDev } = playwright;18checkDepsAreArrayDev(['a', 'b']);19const playwright = require('playwright');20const { checkDepsAreArrayDev } = playwright;21checkDepsAreArrayDev(['a', 'b']);22const playwright = require('playwright');23const { checkDepsAreArrayDev } = playwright;24checkDepsAreArrayDev(['a', 'b']);25const playwright = require('playwright');26const { checkDepsAreArrayDev } = playwright;27checkDepsAreArrayDev(['a', 'b']);28const playwright = require('playwright');29const { checkD

Using AI Code Generation

1const { checkDepsAreArrayDev } = require('@playwright/test/lib/utils/deps');2const { expect } = require('chai');3const { describe, it } = require('mocha');4describe('test', () => {5  it('test', () => {6    expect(checkDepsAreArrayDev(['puppeteer'])).to.be.true;7  });8});9{10  "scripts": {11  },12  "devDependencies": {13  }14}15const { checkDepsAreArrayDev } = require('@playwright/test/lib/utils/deps');16const { expect } = require('chai');17const { describe, it } = require('mocha');18describe('test', () => {19  it('test', () => {20    expect(checkDepsAreArrayDev(['puppeteer'])).to.be.true;21  });22});23{24  "scripts": {25  },26  "devDependencies": {27  }28}

Using AI Code Generation

1const playwright = require('playwright');2console.log(playwright.internal.checkDepsAreArrayDev(['foo', 'bar']));3const playwright = require('playwright');4console.log(playwright.checkDepsAreArrayDev(['foo', 'bar']));5const playwright = require('playwright');6console.log(playwright.internal.checkDepsAreArrayDev(['foo', 'bar']));7const playwright = require('playwright');8console.log(playwright.checkDepsAreArrayDev(['foo', 'bar']));9const playwright = require('playwright');10console.log(playwright.internal.checkDepsAreArrayDev(['foo', 'bar']));11const playwright = require('playwright');12console.log(playwright.checkDepsAreArrayDev(['foo', 'bar']));13const playwright = require('playwright');14console.log(playwright.internal.checkDepsAreArrayDev(['foo', 'bar']));15const playwright = require('playwright');16console.log(playwright.checkDepsAreArrayDev(['foo', 'bar']));17const playwright = require('playwright');18console.log(playwright.internal.checkDepsAreArrayDev(['foo', 'bar']));19const playwright = require('playwright');20console.log(playwright.checkDepsAreArrayDev(['foo', 'bar']));21const playwright = require('playwright');22console.log(playwright.internal.checkDepsAreArrayDev(['foo', 'bar']));23const playwright = require('playwright');

Using AI Code Generation

1const {checkDepsAreArrayDev} = require('playwright/lib/utils/utils');2const deps = checkDepsAreArrayDev(['chromium', 'firefox', 'webkit']);3console.log(deps);4const {checkDepsAreArrayDev} = require('playwright');5const deps = checkDepsAreArrayDev(['chromium', 'firefox', 'webkit']);6console.log(deps);7const {checkDepsAreArrayDev} = require('playwright');8const deps = checkDepsAreArrayDev(['chromium', 'firefox', 'webkit']);9console.log(deps);10const {checkDepsAreArrayDev} = require('playwright');11const deps = checkDepsAreArrayDev(['chromium', 'firefox', 'webkit']);12console.log(deps);13const {checkDepsAreArrayDev} = require('playwright');14const deps = checkDepsAreArrayDev(['chromium', 'firefox', 'webkit']);15console.log(deps);16const {checkDepsAreArrayDev} = require('playwright');17const deps = checkDepsAreArrayDev(['chromium', 'firefox', 'webkit']);18console.log(deps);19const {checkDepsAreArrayDev} = require('playwright');20const deps = checkDepsAreArrayDev(['chromium', 'firefox', 'webkit']);21console.log(deps);22const {checkDepsAreArrayDev} = require('playwright');

Using AI Code Generation

1const { checkDepsAreArrayDev } = require('@playwright/test');2const deps = ['fs', 'path', 'os'];3checkDepsAreArrayDev(deps);4    at checkDepsAreArrayDev (D:\work\playwright\packages\playwright-test\src\installDeps.ts:9:11)5    at Object.<anonymous> (D:\work\playwright\test.js:5:1)6    at Module._compile (internal/modules/cjs/loader.js:1137:30)7    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1157:10)8    at Module.load (internal/modules/cjs/loader.js:985:32)9    at Function.Module._load (internal/modules/cjs/loader.js:878:14)10    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)

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.