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How to use warnOnInvalidKey method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactChildFiber.new.js

Source:ReactChildFiber.new.js

...657  }658  /**659   * Warns if there is a duplicate or missing key660   */661  function warnOnInvalidKey(662    child       ,663    knownKeys                    ,664    returnFiber       ,665  )                     {666    if (__DEV__) {667      if (typeof child !== 'object' || child === null) {668        return knownKeys;669      }670      switch (child.$$typeof) {671        case REACT_ELEMENT_TYPE:672        case REACT_PORTAL_TYPE:673          warnForMissingKey(child, returnFiber);674          const key = child.key;675          if (typeof key !== 'string') {676            break;677          }678          if (knownKeys === null) {679            knownKeys = new Set();680            knownKeys.add(key);681            break;682          }683          if (!knownKeys.has(key)) {684            knownKeys.add(key);685            break;686          }687          console.error(688            'Encountered two children with the same key, `%s`. ' +689              'Keys should be unique so that components maintain their identity ' +690              'across updates. Non-unique keys may cause children to be ' +691              'duplicated and/or omitted â the behavior is unsupported and ' +692              'could change in a future version.',693            key,694          );695          break;696        case REACT_LAZY_TYPE:697          if (enableLazyElements) {698            const payload = child._payload;699            const init = (child._init     );700            warnOnInvalidKey(init(payload), knownKeys, returnFiber);701            break;702          }703        // We intentionally fallthrough here if enableLazyElements is not on.704        // eslint-disable-next-lined no-fallthrough705        default:706          break;707      }708    }709    return knownKeys;710  }711  function reconcileChildrenArray(712    returnFiber       ,713    currentFirstChild              ,714    newChildren          ,715    lanes       ,716  )               {717    // This algorithm can't optimize by searching from both ends since we718    // don't have backpointers on fibers. I'm trying to see how far we can get719    // with that model. If it ends up not being worth the tradeoffs, we can720    // add it later.721    // Even with a two ended optimization, we'd want to optimize for the case722    // where there are few changes and brute force the comparison instead of723    // going for the Map. It'd like to explore hitting that path first in724    // forward-only mode and only go for the Map once we notice that we need725    // lots of look ahead. This doesn't handle reversal as well as two ended726    // search but that's unusual. Besides, for the two ended optimization to727    // work on Iterables, we'd need to copy the whole set.728    // In this first iteration, we'll just live with hitting the bad case729    // (adding everything to a Map) in for every insert/move.730    // If you change this code, also update reconcileChildrenIterator() which731    // uses the same algorithm.732    if (__DEV__) {733      // First, validate keys.734      let knownKeys = null;735      for (let i = 0; i < newChildren.length; i++) {736        const child = newChildren[i];737        knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber);738      }739    }740    let resultingFirstChild               = null;741    let previousNewFiber               = null;742    let oldFiber = currentFirstChild;743    let lastPlacedIndex = 0;744    let newIdx = 0;745    let nextOldFiber = null;746    for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) {747      if (oldFiber.index > newIdx) {748        nextOldFiber = oldFiber;749        oldFiber = null;750      } else {751        nextOldFiber = oldFiber.sibling;752      }753      const newFiber = updateSlot(754        returnFiber,755        oldFiber,756        newChildren[newIdx],757        lanes,758      );759      if (newFiber === null) {760        // TODO: This breaks on empty slots like null children. That's761        // unfortunate because it triggers the slow path all the time. We need762        // a better way to communicate whether this was a miss or null,763        // boolean, undefined, etc.764        if (oldFiber === null) {765          oldFiber = nextOldFiber;766        }767        break;768      }769      if (shouldTrackSideEffects) {770        if (oldFiber && newFiber.alternate === null) {771          // We matched the slot, but we didn't reuse the existing fiber, so we772          // need to delete the existing child.773          deleteChild(returnFiber, oldFiber);774        }775      }776      lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx);777      if (previousNewFiber === null) {778        // TODO: Move out of the loop. This only happens for the first run.779        resultingFirstChild = newFiber;780      } else {781        // TODO: Defer siblings if we're not at the right index for this slot.782        // I.e. if we had null values before, then we want to defer this783        // for each null value. However, we also don't want to call updateSlot784        // with the previous one.785        previousNewFiber.sibling = newFiber;786      }787      previousNewFiber = newFiber;788      oldFiber = nextOldFiber;789    }790    if (newIdx === newChildren.length) {791      // We've reached the end of the new children. We can delete the rest.792      deleteRemainingChildren(returnFiber, oldFiber);793      return resultingFirstChild;794    }795    if (oldFiber === null) {796      // If we don't have any more existing children we can choose a fast path797      // since the rest will all be insertions.798      for (; newIdx < newChildren.length; newIdx++) {799        const newFiber = createChild(returnFiber, newChildren[newIdx], lanes);800        if (newFiber === null) {801          continue;802        }803        lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx);804        if (previousNewFiber === null) {805          // TODO: Move out of the loop. This only happens for the first run.806          resultingFirstChild = newFiber;807        } else {808          previousNewFiber.sibling = newFiber;809        }810        previousNewFiber = newFiber;811      }812      return resultingFirstChild;813    }814    // Add all children to a key map for quick lookups.815    const existingChildren = mapRemainingChildren(returnFiber, oldFiber);816    // Keep scanning and use the map to restore deleted items as moves.817    for (; newIdx < newChildren.length; newIdx++) {818      const newFiber = updateFromMap(819        existingChildren,820        returnFiber,821        newIdx,822        newChildren[newIdx],823        lanes,824      );825      if (newFiber !== null) {826        if (shouldTrackSideEffects) {827          if (newFiber.alternate !== null) {828            // The new fiber is a work in progress, but if there exists a829            // current, that means that we reused the fiber. We need to delete830            // it from the child list so that we don't add it to the deletion831            // list.832            existingChildren.delete(833              newFiber.key === null ? newIdx : newFiber.key,834            );835          }836        }837        lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx);838        if (previousNewFiber === null) {839          resultingFirstChild = newFiber;840        } else {841          previousNewFiber.sibling = newFiber;842        }843        previousNewFiber = newFiber;844      }845    }846    if (shouldTrackSideEffects) {847      // Any existing children that weren't consumed above were deleted. We need848      // to add them to the deletion list.849      existingChildren.forEach(child => deleteChild(returnFiber, child));850    }851    return resultingFirstChild;852  }853  function reconcileChildrenIterator(854    returnFiber       ,855    currentFirstChild              ,856    newChildrenIterable             ,857    lanes       ,858  )               {859    // This is the same implementation as reconcileChildrenArray(),860    // but using the iterator instead.861    const iteratorFn = getIteratorFn(newChildrenIterable);862    invariant(863      typeof iteratorFn === 'function',864      'An object is not an iterable. This error is likely caused by a bug in ' +865        'React. Please file an issue.',866    );867    if (__DEV__) {868      // We don't support rendering Generators because it's a mutation.869      // See https://github.com/facebook/react/issues/12995870      if (871        typeof Symbol === 'function' &&872        // $FlowFixMe Flow doesn't know about toStringTag873        newChildrenIterable[Symbol.toStringTag] === 'Generator'874      ) {875        if (!didWarnAboutGenerators) {876          console.error(877            'Using Generators as children is unsupported and will likely yield ' +878              'unexpected results because enumerating a generator mutates it. ' +879              'You may convert it to an array with `Array.from()` or the ' +880              '`[...spread]` operator before rendering. Keep in mind ' +881              'you might need to polyfill these features for older browsers.',882          );883        }884        didWarnAboutGenerators = true;885      }886      // Warn about using Maps as children887      if ((newChildrenIterable     ).entries === iteratorFn) {888        if (!didWarnAboutMaps) {889          console.error(890            'Using Maps as children is not supported. ' +891              'Use an array of keyed ReactElements instead.',892          );893        }894        didWarnAboutMaps = true;895      }896      // First, validate keys.897      // We'll get a different iterator later for the main pass.898      const newChildren = iteratorFn.call(newChildrenIterable);899      if (newChildren) {900        let knownKeys = null;901        let step = newChildren.next();902        for (; !step.done; step = newChildren.next()) {903          const child = step.value;904          knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber);905        }906      }907    }908    const newChildren = iteratorFn.call(newChildrenIterable);909    invariant(newChildren != null, 'An iterable object provided no iterator.');910    let resultingFirstChild               = null;911    let previousNewFiber               = null;912    let oldFiber = currentFirstChild;913    let lastPlacedIndex = 0;914    let newIdx = 0;915    let nextOldFiber = null;916    let step = newChildren.next();917    for (918      ;...

ReactChildFiber.old.js

Source:ReactChildFiber.old.js

...453    }454    /**455     * Warns if there is a duplicate or missing key456     */457    function warnOnInvalidKey(child, knownKeys, returnFiber) {458      {459        if (typeof child !== 'object' || child === null) {460          return knownKeys;461        }462        switch (child.$$typeof) {463          case REACT_ELEMENT_TYPE:464          case REACT_PORTAL_TYPE:465            warnForMissingKey(child, returnFiber);466            var key = child.key;467            if (typeof key !== 'string') {468              break;469            }470            if (knownKeys === null) {471              knownKeys = new Set();472              knownKeys.add(key);473              break;474            }475            if (!knownKeys.has(key)) {476              knownKeys.add(key);477              break;478            }479            error('Encountered two children with the same key, `%s`. ' + 'Keys should be unique so that components maintain their identity ' + 'across updates. Non-unique keys may cause children to be ' + 'duplicated and/or omitted â the behavior is unsupported and ' + 'could change in a future version.', key);480            break;481          case REACT_LAZY_TYPE:482            {483              var payload = child._payload;484              var init = child._init;485              warnOnInvalidKey(init(payload), knownKeys, returnFiber);486              break;487            }488        }489      }490      return knownKeys;491    }492    function reconcileChildrenArray(returnFiber, currentFirstChild, newChildren, lanes) {493      // This algorithm can't optimize by searching from both ends since we494      // don't have backpointers on fibers. I'm trying to see how far we can get495      // with that model. If it ends up not being worth the tradeoffs, we can496      // add it later.497      // Even with a two ended optimization, we'd want to optimize for the case498      // where there are few changes and brute force the comparison instead of499      // going for the Map. It'd like to explore hitting that path first in500      // forward-only mode and only go for the Map once we notice that we need501      // lots of look ahead. This doesn't handle reversal as well as two ended502      // search but that's unusual. Besides, for the two ended optimization to503      // work on Iterables, we'd need to copy the whole set.504      // In this first iteration, we'll just live with hitting the bad case505      // (adding everything to a Map) in for every insert/move.506      // If you change this code, also update reconcileChildrenIterator() which507      // uses the same algorithm.508      {509        // First, validate keys.510        var knownKeys = null;511        for (var i = 0; i < newChildren.length; i++) {512          var child = newChildren[i];513          knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber);514        }515      }516      var resultingFirstChild = null;517      var previousNewFiber = null;518      var oldFiber = currentFirstChild;519      var lastPlacedIndex = 0;520      var newIdx = 0;521      var nextOldFiber = null;522      for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) {523        if (oldFiber.index > newIdx) {524          nextOldFiber = oldFiber;525          oldFiber = null;526        } else {527          nextOldFiber = oldFiber.sibling;528        }529        var newFiber = updateSlot(returnFiber, oldFiber, newChildren[newIdx], lanes);530        if (newFiber === null) {531          // TODO: This breaks on empty slots like null children. That's532          // unfortunate because it triggers the slow path all the time. We need533          // a better way to communicate whether this was a miss or null,534          // boolean, undefined, etc.535          if (oldFiber === null) {536            oldFiber = nextOldFiber;537          }538          break;539        }540        if (shouldTrackSideEffects) {541          if (oldFiber && newFiber.alternate === null) {542            // We matched the slot, but we didn't reuse the existing fiber, so we543            // need to delete the existing child.544            deleteChild(returnFiber, oldFiber);545          }546        }547        lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx);548        if (previousNewFiber === null) {549          // TODO: Move out of the loop. This only happens for the first run.550          resultingFirstChild = newFiber;551        } else {552          // TODO: Defer siblings if we're not at the right index for this slot.553          // I.e. if we had null values before, then we want to defer this554          // for each null value. However, we also don't want to call updateSlot555          // with the previous one.556          previousNewFiber.sibling = newFiber;557        }558        previousNewFiber = newFiber;559        oldFiber = nextOldFiber;560      }561      if (newIdx === newChildren.length) {562        // We've reached the end of the new children. We can delete the rest.563        deleteRemainingChildren(returnFiber, oldFiber);564        return resultingFirstChild;565      }566      if (oldFiber === null) {567        // If we don't have any more existing children we can choose a fast path568        // since the rest will all be insertions.569        for (; newIdx < newChildren.length; newIdx++) {570          var _newFiber = createChild(returnFiber, newChildren[newIdx], lanes);571          if (_newFiber === null) {572            continue;573          }574          lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx);575          if (previousNewFiber === null) {576            // TODO: Move out of the loop. This only happens for the first run.577            resultingFirstChild = _newFiber;578          } else {579            previousNewFiber.sibling = _newFiber;580          }581          previousNewFiber = _newFiber;582        }583        return resultingFirstChild;584      } // Add all children to a key map for quick lookups.585      var existingChildren = mapRemainingChildren(returnFiber, oldFiber); // Keep scanning and use the map to restore deleted items as moves.586      for (; newIdx < newChildren.length; newIdx++) {587        var _newFiber2 = updateFromMap(existingChildren, returnFiber, newIdx, newChildren[newIdx], lanes);588        if (_newFiber2 !== null) {589          if (shouldTrackSideEffects) {590            if (_newFiber2.alternate !== null) {591              // The new fiber is a work in progress, but if there exists a592              // current, that means that we reused the fiber. We need to delete593              // it from the child list so that we don't add it to the deletion594              // list.595              existingChildren.delete(_newFiber2.key === null ? newIdx : _newFiber2.key);596            }597          }598          lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx);599          if (previousNewFiber === null) {600            resultingFirstChild = _newFiber2;601          } else {602            previousNewFiber.sibling = _newFiber2;603          }604          previousNewFiber = _newFiber2;605        }606      }607      if (shouldTrackSideEffects) {608        // Any existing children that weren't consumed above were deleted. We need609        // to add them to the deletion list.610        existingChildren.forEach(function (child) {611          return deleteChild(returnFiber, child);612        });613      }614      return resultingFirstChild;615    }616    function reconcileChildrenIterator(returnFiber, currentFirstChild, newChildrenIterable, lanes) {617      // This is the same implementation as reconcileChildrenArray(),618      // but using the iterator instead.619      var iteratorFn = getIteratorFn(newChildrenIterable);620      if (!(typeof iteratorFn === 'function')) {621        {622          throw Error( "An object is not an iterable. This error is likely caused by a bug in React. Please file an issue." );623        }624      }625      {626        // We don't support rendering Generators because it's a mutation.627        // See https://github.com/facebook/react/issues/12995628        if (typeof Symbol === 'function' && // $FlowFixMe Flow doesn't know about toStringTag629        newChildrenIterable[Symbol.toStringTag] === 'Generator') {630          if (!didWarnAboutGenerators) {631            error('Using Generators as children is unsupported and will likely yield ' + 'unexpected results because enumerating a generator mutates it. ' + 'You may convert it to an array with `Array.from()` or the ' + '`[...spread]` operator before rendering. Keep in mind ' + 'you might need to polyfill these features for older browsers.');632          }633          didWarnAboutGenerators = true;634        } // Warn about using Maps as children635        if (newChildrenIterable.entries === iteratorFn) {636          if (!didWarnAboutMaps) {637            error('Using Maps as children is not supported. ' + 'Use an array of keyed ReactElements instead.');638          }639          didWarnAboutMaps = true;640        } // First, validate keys.641        // We'll get a different iterator later for the main pass.642        var _newChildren = iteratorFn.call(newChildrenIterable);643        if (_newChildren) {644          var knownKeys = null;645          var _step = _newChildren.next();646          for (; !_step.done; _step = _newChildren.next()) {647            var child = _step.value;648            knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber);649          }650        }651      }652      var newChildren = iteratorFn.call(newChildrenIterable);653      if (!(newChildren != null)) {654        {655          throw Error( "An iterable object provided no iterator." );656        }657      }658      var resultingFirstChild = null;659      var previousNewFiber = null;660      var oldFiber = currentFirstChild;661      var lastPlacedIndex = 0;662      var newIdx = 0;...

diff.js

Source:diff.js

...8    // First, validate keys.9    var knownKeys = null;10    for (var i = 0; i < newChildren.length; i++) {11        var child = newChildren[i];12        knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber);13    }14    var resultingFirstChild = null;15    var previousNewFiber = null;16    var oldFiber = currentFirstChild;17    var lastPlacedIndex = 0;18    var newIdx = 0;19    var nextOldFiber = null;20    // ç¬¬ä¸è½®éå21    for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) {22        if (oldFiber.index > newIdx) {23            nextOldFiber = oldFiber;24            oldFiber = null;25        } else {26            nextOldFiber = oldFiber.sibling;...

Using AI Code Generation

1const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');2const { registerFixture } = require('@playwright/test/lib/test');3const { registerWorkerFixture } = require('@playwright/test/lib/test');4const { registerWorkerFixture } = require('@playwright/test/lib/test');5const { registerWorkerFixture } = require('@playwright/test/lib/test');6const { registerWorkerFixture } = require('@playwright/test/lib/test');7-   First, we need to use the below code to import the Playwright Internal API methods:8const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');9const { registerFixture } = require('@playwright/test/lib/test');10const { registerWorkerFixture } = require('@playwright/test/lib/test');11const { registerWorkerFixture } = require('@playwright/test/lib/test');12const { registerWorkerFixture } = require('@playwright/test/lib/test');13const { registerWorkerFixture } = require('@playwright/test/lib/test');14warnOnInvalidKey(options, ['option1', 'option2']);15registerFixture('fixtureName', async ({}, test) => {16    await test('fixtureName');17});18registerWorkerFixture('fixtureName', async ({}, test) =>

Using AI Code Generation

1const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');2const { test } = require('@playwright/test');3test('test', async ({ page }) => {4  await page.click('text=Get started');5  warnOnInvalidKey(page, 'random');6});7- **Shashank Singh** - [ShashankSingh](

Using AI Code Generation

1const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');2const { devices } = require('@playwright/test');3const { chromium } = require('playwright');4const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');5const { devices } = require('@playwright/test');6const { chromium } = require('playwright');7const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');8const { devices } = require('@playwright/test');9const { chromium } = require('playwright');10const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');11const { devices } = require('@playwright/test');12const { chromium } = require('playwright');13const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');14const { devices } = require('@playwright/test');15const { chromium } = require('playwright');16const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');17const { devices } = require('@playwright/test');18const { chromium } = require('playwright');19const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');20const { devices } = require('@playwright/test');21const { chromium } = require('playwright');22const { warnOnInvalidKey } = require('@playwright/test/lib/utils/utils');

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