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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 // 第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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