How to use reconcileChildren method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberBeginWork.js

Source:ReactFiberBeginWork.js Github

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...83 // Any deletions get added first into the effect list.84 workInProgress.firstEffect = workInProgress.progressedFirstDeletion;85 workInProgress.lastEffect = workInProgress.progressedLastDeletion;86 }87 function reconcileChildren(current, workInProgress, nextChildren) {88 const priorityLevel = workInProgress.pendingWorkPriority;89 reconcileChildrenAtPriority(current, workInProgress, nextChildren, priorityLevel);90 }91 function reconcileChildrenAtPriority(current, workInProgress, nextChildren, priorityLevel) {92 // At this point any memoization is no longer valid since we'll have changed93 // the children.94 workInProgress.memoizedProps = null;95 if (!current) {96 // If this is a fresh new component that hasn't been rendered yet, we97 // won't update its child set by applying minimal side-effects. Instead,98 // we will add them all to the child before it gets rendered. That means99 // we can optimize this reconciliation pass by not tracking side-effects.100 workInProgress.child = mountChildFibersInPlace(101 workInProgress,102 workInProgress.child,103 nextChildren,104 priorityLevel105 );106 } else if (current.child === workInProgress.child) {107 // If the current child is the same as the work in progress, it means that108 // we haven't yet started any work on these children. Therefore, we use109 // the clone algorithm to create a copy of all the current children.110 // If we had any progressed work already, that is invalid at this point so111 // let's throw it out.112 clearDeletions(workInProgress);113 workInProgress.child = reconcileChildFibers(114 workInProgress,115 workInProgress.child,116 nextChildren,117 priorityLevel118 );119 transferDeletions(workInProgress);120 } else {121 // If, on the other hand, it is already using a clone, that means we've122 // already begun some work on this tree and we can continue where we left123 // off by reconciling against the existing children.124 workInProgress.child = reconcileChildFibersInPlace(125 workInProgress,126 workInProgress.child,127 nextChildren,128 priorityLevel129 );130 transferDeletions(workInProgress);131 }132 markChildAsProgressed(current, workInProgress, priorityLevel);133 }134 function updateFragment(current, workInProgress) {135 var nextChildren = workInProgress.pendingProps;136 reconcileChildren(current, workInProgress, nextChildren);137 }138 function updateFunctionalComponent(current, workInProgress) {139 var fn = workInProgress.type;140 var props = workInProgress.pendingProps;141 var context = getMaskedContext(workInProgress);142 // TODO: Disable this before release, since it is not part of the public API143 // I use this for testing to compare the relative overhead of classes.144 if (typeof fn.shouldComponentUpdate === 'function') {145 if (workInProgress.memoizedProps !== null) {146 if (!fn.shouldComponentUpdate(workInProgress.memoizedProps, props)) {147 return bailoutOnAlreadyFinishedWork(current, workInProgress);148 }149 }150 }151 var nextChildren;152 if (__DEV__) {153 ReactCurrentOwner.current = workInProgress;154 nextChildren = fn(props, context);155 } else {156 nextChildren = fn(props, context);157 }158 reconcileChildren(current, workInProgress, nextChildren);159 return workInProgress.child;160 }161 function updateClassComponent(current : ?Fiber, workInProgress : Fiber) {162 let shouldUpdate;163 if (!current) {164 if (!workInProgress.stateNode) {165 // In the initial pass we might need to construct the instance.166 constructClassInstance(workInProgress);167 mountClassInstance(workInProgress);168 shouldUpdate = true;169 } else {170 // In a resume, we'll already have an instance we can reuse.171 shouldUpdate = resumeMountClassInstance(workInProgress);172 }173 } else {174 shouldUpdate = updateClassInstance(current, workInProgress);175 }176 if (!shouldUpdate) {177 return bailoutOnAlreadyFinishedWork(current, workInProgress);178 }179 // Rerender180 const instance = workInProgress.stateNode;181 ReactCurrentOwner.current = workInProgress;182 const nextChildren = instance.render();183 reconcileChildren(current, workInProgress, nextChildren);184 // Put context on the stack because we will work on children185 if (isContextProvider(workInProgress)) {186 pushContextProvider(workInProgress, true);187 }188 return workInProgress.child;189 }190 function updateHostComponent(current, workInProgress) {191 let nextChildren = workInProgress.pendingProps.children;192 if (typeof nextChildren === 'string' || typeof nextChildren === 'number') {193 // We special case a direct text child of a host node. This is a common194 // case. We won't handle it as a reified child. We will instead handle195 // this in the host environment that also have access to this prop. That196 // avoids allocating another HostText fiber and traversing it.197 nextChildren = null;198 }199 if (workInProgress.pendingProps.hidden &&200 workInProgress.pendingWorkPriority !== OffscreenPriority) {201 // If this host component is hidden, we can bail out on the children.202 // We'll rerender the children later at the lower priority.203 // It is unfortunate that we have to do the reconciliation of these204 // children already since that will add them to the tree even though205 // they are not actually done yet. If this is a large set it is also206 // confusing that this takes time to do right now instead of later.207 if (workInProgress.progressedPriority === OffscreenPriority) {208 // If we already made some progress on the offscreen priority before,209 // then we should continue from where we left off.210 workInProgress.child = workInProgress.progressedChild;211 }212 // Reconcile the children and stash them for later work.213 reconcileChildrenAtPriority(current, workInProgress, nextChildren, OffscreenPriority);214 workInProgress.child = current ? current.child : null;215 if (!current) {216 // If this doesn't have a current we won't track it for placement217 // effects. However, when we come back around to this we have already218 // inserted the parent which means that we'll infact need to make this a219 // placement.220 // TODO: There has to be a better solution to this problem.221 let child = workInProgress.progressedChild;222 while (child) {223 child.effectTag = Placement;224 child = child.sibling;225 }226 }227 // Abort and don't process children yet.228 return null;229 } else {230 reconcileChildren(current, workInProgress, nextChildren);231 return workInProgress.child;232 }233 }234 function mountIndeterminateComponent(current, workInProgress) {235 if (current) {236 throw new Error('An indeterminate component should never have mounted.');237 }238 var fn = workInProgress.type;239 var props = workInProgress.pendingProps;240 var context = getMaskedContext(workInProgress);241 var value;242 if (__DEV__) {243 ReactCurrentOwner.current = workInProgress;244 value = fn(props, context);245 } else {246 value = fn(props, context);247 }248 if (typeof value === 'object' && value && typeof value.render === 'function') {249 // Proceed under the assumption that this is a class instance250 workInProgress.tag = ClassComponent;251 adoptClassInstance(workInProgress, value);252 mountClassInstance(workInProgress);253 ReactCurrentOwner.current = workInProgress;254 value = value.render();255 } else {256 // Proceed under the assumption that this is a functional component257 workInProgress.tag = FunctionalComponent;258 }259 reconcileChildren(current, workInProgress, value);260 return workInProgress.child;261 }262 function updateCoroutineComponent(current, workInProgress) {263 var coroutine = (workInProgress.pendingProps : ?ReactCoroutine);264 if (!coroutine) {265 throw new Error('Should be resolved by now');266 }267 reconcileChildren(current, workInProgress, coroutine.children);268 }269 function updatePortalComponent(current, workInProgress) {270 const priorityLevel = workInProgress.pendingWorkPriority;271 const nextChildren = workInProgress.pendingProps;272 if (!current) {273 // Portals are special because we don't append the children during mount274 // but at commit. Therefore we need to track insertions which the normal275 // flow doesn't do during mount. This doesn't happen at the root because276 // the root always starts with a "current" with a null child.277 // TODO: Consider unifying this with how the root works.278 workInProgress.child = reconcileChildFibersInPlace(279 workInProgress,280 workInProgress.child,281 nextChildren,282 priorityLevel283 );284 markChildAsProgressed(current, workInProgress, priorityLevel);285 } else {286 reconcileChildren(current, workInProgress, nextChildren);287 }288 }289 /*290 function reuseChildrenEffects(returnFiber : Fiber, firstChild : Fiber) {291 let child = firstChild;292 do {293 // Ensure that the first and last effect of the parent corresponds294 // to the children's first and last effect.295 if (!returnFiber.firstEffect) {296 returnFiber.firstEffect = child.firstEffect;297 }298 if (child.lastEffect) {299 if (returnFiber.lastEffect) {300 returnFiber.lastEffect.nextEffect = child.firstEffect;301 }302 returnFiber.lastEffect = child.lastEffect;303 }304 } while (child = child.sibling);305 }306 */307 function bailoutOnAlreadyFinishedWork(current, workInProgress : Fiber) : ?Fiber {308 const priorityLevel = workInProgress.pendingWorkPriority;309 if (workInProgress.tag === HostComponent &&310 workInProgress.memoizedProps.hidden &&311 workInProgress.pendingWorkPriority !== OffscreenPriority) {312 // This subtree still has work, but it should be deprioritized so we need313 // to bail out and not do any work yet.314 // TODO: It would be better if this tree got its correct priority set315 // during scheduleUpdate instead because otherwise we'll start a higher316 // priority reconciliation first before we can get down here. However,317 // that is a bit tricky since workInProgress and current can have318 // different "hidden" settings.319 let child = workInProgress.progressedChild;320 while (child) {321 // To ensure that this subtree gets its priority reset, the children322 // need to be reset.323 child.pendingWorkPriority = OffscreenPriority;324 child = child.sibling;325 }326 return null;327 }328 // TODO: We should ideally be able to bail out early if the children have no329 // more work to do. However, since we don't have a separation of this330 // Fiber's priority and its children yet - we don't know without doing lots331 // of the same work we do anyway. Once we have that separation we can just332 // bail out here if the children has no more work at this priority level.333 // if (workInProgress.priorityOfChildren <= priorityLevel) {334 // // If there are side-effects in these children that have not yet been335 // // committed we need to ensure that they get properly transferred up.336 // if (current && current.child !== workInProgress.child) {337 // reuseChildrenEffects(workInProgress, child);338 // }339 // return null;340 // }341 if (current && workInProgress.child === current.child) {342 // If we had any progressed work already, that is invalid at this point so343 // let's throw it out.344 clearDeletions(workInProgress);345 }346 cloneChildFibers(current, workInProgress);347 markChildAsProgressed(current, workInProgress, priorityLevel);348 // Put context on the stack because we will work on children349 if (isContextProvider(workInProgress)) {350 pushContextProvider(workInProgress, false);351 }352 return workInProgress.child;353 }354 function bailoutOnLowPriority(current, workInProgress) {355 // TODO: What if this is currently in progress?356 // How can that happen? How is this not being cloned?357 return null;358 }359 function beginWork(current : ?Fiber, workInProgress : Fiber, priorityLevel : PriorityLevel) : ?Fiber {360 if (!workInProgress.return) {361 // Don't start new work with context on the stack.362 resetContext();363 }364 if (workInProgress.pendingWorkPriority === NoWork ||365 workInProgress.pendingWorkPriority > priorityLevel) {366 return bailoutOnLowPriority(current, workInProgress);367 }368 // If we don't bail out, we're going be recomputing our children so we need369 // to drop our effect list.370 workInProgress.firstEffect = null;371 workInProgress.lastEffect = null;372 if (workInProgress.progressedPriority === priorityLevel) {373 // If we have progressed work on this priority level already, we can374 // proceed this that as the child.375 workInProgress.child = workInProgress.progressedChild;376 }377 if ((workInProgress.pendingProps === null || (378 workInProgress.memoizedProps !== null &&379 workInProgress.pendingProps === workInProgress.memoizedProps380 )) &&381 workInProgress.updateQueue === null &&382 !hasContextChanged()) {383 return bailoutOnAlreadyFinishedWork(current, workInProgress);384 }385 switch (workInProgress.tag) {386 case IndeterminateComponent:387 return mountIndeterminateComponent(current, workInProgress);388 case FunctionalComponent:389 return updateFunctionalComponent(current, workInProgress);390 case ClassComponent:391 return updateClassComponent(current, workInProgress);392 case HostContainer: {393 const root = (workInProgress.stateNode : FiberRoot);394 if (root.pendingContext) {395 pushTopLevelContextObject(396 root.pendingContext,397 root.pendingContext !== root.context398 );399 } else {400 pushTopLevelContextObject(root.context, false);401 }402 reconcileChildren(current, workInProgress, workInProgress.pendingProps);403 // A yield component is just a placeholder, we can just run through the404 // next one immediately.405 return workInProgress.child;406 }407 case HostComponent:408 return updateHostComponent(current, workInProgress);409 case HostText:410 // Nothing to do here. This is terminal. We'll do the completion step411 // immediately after.412 return null;413 case CoroutineHandlerPhase:414 // This is a restart. Reset the tag to the initial phase.415 workInProgress.tag = CoroutineComponent;416 // Intentionally fall through since this is now the same....

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ReactFiberFundamental-test.internal.js

Source:ReactFiberFundamental-test.internal.js Github

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1/**2 * Copyright (c) Facebook, Inc. and its affiliates.3 *4 * This source code is licensed under the MIT license found in the5 * LICENSE file in the root directory of this source tree.6 *7 * @emails react-core8 */9'use strict';10let React;11let ReactNoop;12let Scheduler;13let ReactFeatureFlags;14let ReactTestRenderer;15let ReactDOM;16let ReactDOMServer;17function createReactFundamentalComponent(fundamentalImpl) {18 return React.unstable_createFundamental(fundamentalImpl);19}20function init() {21 jest.resetModules();22 ReactFeatureFlags = require('shared/ReactFeatureFlags');23 ReactFeatureFlags.enableFundamentalAPI = true;24 React = require('react');25 Scheduler = require('scheduler');26}27function initNoopRenderer() {28 init();29 ReactNoop = require('react-noop-renderer');30}31function initTestRenderer() {32 init();33 ReactTestRenderer = require('react-test-renderer');34}35function initReactDOM() {36 init();37 ReactDOM = require('react-dom');38}39function initReactDOMServer() {40 init();41 ReactDOMServer = require('react-dom/server');42}43describe('ReactFiberFundamental', () => {44 describe('NoopRenderer', () => {45 beforeEach(() => {46 initNoopRenderer();47 });48 it('should render a simple fundamental component with a single child', () => {49 const FundamentalComponent = createReactFundamentalComponent({50 reconcileChildren: true,51 getInstance(context, props, state) {52 const instance = {53 children: [],54 text: null,55 type: 'test',56 };57 return instance;58 },59 });60 const Test = ({children}) => (61 <FundamentalComponent>{children}</FundamentalComponent>62 );63 ReactNoop.render(<Test>Hello world</Test>);64 expect(Scheduler).toFlushWithoutYielding();65 expect(ReactNoop).toMatchRenderedOutput(<test>Hello world</test>);66 ReactNoop.render(<Test>Hello world again</Test>);67 expect(Scheduler).toFlushWithoutYielding();68 expect(ReactNoop).toMatchRenderedOutput(<test>Hello world again</test>);69 ReactNoop.render(null);70 expect(Scheduler).toFlushWithoutYielding();71 expect(ReactNoop).toMatchRenderedOutput(null);72 });73 });74 describe('NoopTestRenderer', () => {75 beforeEach(() => {76 initTestRenderer();77 });78 it('should render a simple fundamental component with a single child', () => {79 const FundamentalComponent = createReactFundamentalComponent({80 reconcileChildren: true,81 getInstance(context, props, state) {82 const instance = {83 children: [],84 props,85 type: 'test',86 tag: 'INSTANCE',87 };88 return instance;89 },90 });91 const Test = ({children}) => (92 <FundamentalComponent>{children}</FundamentalComponent>93 );94 const root = ReactTestRenderer.create(null);95 root.update(<Test>Hello world</Test>);96 expect(Scheduler).toFlushWithoutYielding();97 expect(root).toMatchRenderedOutput(<test>Hello world</test>);98 root.update(<Test>Hello world again</Test>);99 expect(Scheduler).toFlushWithoutYielding();100 expect(root).toMatchRenderedOutput(<test>Hello world again</test>);101 root.update(null);102 expect(Scheduler).toFlushWithoutYielding();103 expect(root).toMatchRenderedOutput(null);104 });105 });106 describe('ReactDOM', () => {107 beforeEach(() => {108 initReactDOM();109 });110 it('should render a simple fundamental component with a single child', () => {111 const FundamentalComponent = createReactFundamentalComponent({112 reconcileChildren: true,113 getInstance(context, props, state) {114 const instance = document.createElement('div');115 return instance;116 },117 });118 const Test = ({children}) => (119 <FundamentalComponent>{children}</FundamentalComponent>120 );121 const container = document.createElement('div');122 ReactDOM.render(<Test>Hello world</Test>, container);123 expect(Scheduler).toFlushWithoutYielding();124 expect(container.innerHTML).toBe('<div>Hello world</div>');125 ReactDOM.render(<Test>Hello world again</Test>, container);126 expect(Scheduler).toFlushWithoutYielding();127 expect(container.innerHTML).toBe('<div>Hello world again</div>');128 ReactDOM.render(null, container);129 expect(Scheduler).toFlushWithoutYielding();130 expect(container.innerHTML).toBe('');131 });132 it('should render a simple fundamental component without reconcileChildren', () => {133 const FundamentalComponent = createReactFundamentalComponent({134 reconcileChildren: false,135 getInstance(context, props, state) {136 const instance = document.createElement('div');137 instance.textContent = 'Hello world';138 return instance;139 },140 });141 const Test = () => <FundamentalComponent />;142 const container = document.createElement('div');143 ReactDOM.render(<Test />, container);144 expect(Scheduler).toFlushWithoutYielding();145 expect(container.innerHTML).toBe('<div>Hello world</div>');146 // Children should be ignored147 ReactDOM.render(<Test>Hello world again</Test>, container);148 expect(Scheduler).toFlushWithoutYielding();149 expect(container.innerHTML).toBe('<div>Hello world</div>');150 ReactDOM.render(null, container);151 expect(Scheduler).toFlushWithoutYielding();152 expect(container.innerHTML).toBe('');153 });154 });155 describe('ReactDOMServer', () => {156 beforeEach(() => {157 initReactDOMServer();158 });159 it('should render a simple fundamental component with a single child', () => {160 const getInstance = jest.fn();161 const FundamentalComponent = createReactFundamentalComponent({162 reconcileChildren: true,163 getInstance,164 getServerSideString(context, props) {165 return `<div>`;166 },167 getServerSideStringClose(context, props) {168 return `</div>`;169 },170 });171 const Test = ({children}) => (172 <FundamentalComponent>{children}</FundamentalComponent>173 );174 expect(getInstance).not.toBeCalled();175 let output = ReactDOMServer.renderToString(<Test>Hello world</Test>);176 expect(output).toBe('<div>Hello world</div>');177 output = ReactDOMServer.renderToString(<Test>Hello world again</Test>);178 expect(output).toBe('<div>Hello world again</div>');179 });180 it('should render a simple fundamental component without reconcileChildren', () => {181 const FundamentalComponent = createReactFundamentalComponent({182 reconcileChildren: false,183 getServerSideString(context, props) {184 return `<div>Hello world</div>`;185 },186 });187 const Test = () => <FundamentalComponent />;188 let output = ReactDOMServer.renderToString(<Test />);189 expect(output).toBe('<div>Hello world</div>');190 // Children should be ignored191 output = ReactDOMServer.renderToString(<Test>Hello world again</Test>);192 expect(output).toBe('<div>Hello world</div>');193 });194 });...

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react-dom.js

Source:react-dom.js Github

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...47 // : updateFunctionComponent(vnode);48 // } else {49 // node = document.createDocumentFragment();50 // }51 // reconcileChildren(props.children, node);52 updateNode(node, props);53 return node;54}55// 遍历下子节点-old56// function reconcileChildren(children, node) {57// for (let i = 0; i < children.length; i++) {58// let child = children[i];59// // child是vnode，那需要把vnode->真实dom节点，然后插入父节点node中60// render(child, node);61// }62// }63// 协调子节点64// 1. 给workInProgress添加一个child节点，就是children的第一个子节点形成的fiber65// 2. 形成fiber架构，把children里节点遍历下，形成fiber链表状66function reconcileChildren(workInProgress, children) {67 let prevSibling = null;68 for (let i = 0; i < children.length; i++) {69 let child = children[i];70 // 今天先写初次渲染71 let newFiber = {72 type: child.type,73 props: child.props,74 node: null,75 base: null,76 return: workInProgress,77 effectTag: PLACEMENT78 };79 if (i === 0) {80 workInProgress.child = newFiber;81 } else {82 prevSibling.sibling = newFiber;83 }84 prevSibling = newFiber;85 }86}87// 添加节点属性88function updateNode(node, nextVal) {89 Object.keys(nextVal)90 .filter(k => k !== "children")91 .forEach(k => {92 node[k] = nextVal[k];93 });94}95function updateClassComponent(vnode) {96 // const {type, props} = vnode;97 // const cmp = new type(props);98 // const vvnode = cmp.render();99 // // 返回真实dom节点100 // const node = createNode(vvnode);101 // return node;102}103function updateFunctionComponent(fiber) {104 const {type, props} = fiber;105 const children = [type(props)];106 reconcileChildren(fiber, children);107}108function updateHostComponent(fiber) {109 if (!fiber.node) {110 fiber.node = createNode(fiber);111 }112 const {children} = fiber.props;113 reconcileChildren(fiber, children);114 console.log("updateHostComponent", fiber); //sy-log115}116function performUnitOfWork(fiber) {117 // step1: 执行更新当前fiber118 // todo119 // sth120 const {type} = fiber;121 if (typeof type === "function") {122 type.isReactComponent123 ? updateClassComponent(fiber)124 : updateFunctionComponent(fiber);125 } else {126 // 原生标签的127 updateHostComponent(fiber);...

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scheduler.js

Source:scheduler.js Github

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...74}75// 任务分片的单位即为fiber76function performUnitOfWork(fiber) {77 if (typeof fiber.type === "object") {78 reconcileChildren(fiber, [fiber.type]);79 } else if (typeof fiber.type === "function") {80 if (fiber.type.toString().startsWith("class")) {81 reconcileChildren(fiber, [new fiber.type(fiber.props).render()]);82 } else {83 wipFiber = fiber;84 wipFiber.hooks = [];85 wipHookIndex = 0;86 reconcileChildren(fiber, [fiber.type(fiber.props)]);87 }88 } else {89 reconcileChildren(fiber, fiber.props.children);90 if (fiber.type && !fiber.dom) {91 fiber.dom = createDomNode(fiber);92 }93 }94 if (fiber.child) {95 return fiber.child;96 }97 let nextFiber = fiber;98 while (nextFiber) {99 if (nextFiber.sibling) {100 return nextFiber.sibling;101 }102 nextFiber = nextFiber.parent;103 }...

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ReactFiberReconciler.js

Source:ReactFiberReconciler.js Github

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...7 // 更新属性8 updateNode(wip.stateNode, {}, wip.props)9 }10 // 遍历子节点11 reconcileChildren(wip, wip.props.children)12}13// 更新函数组件14export function updateFunctionComponent(wip) {15 renderWithHooks(wip)16 const { type, props } = wip17 const children = type(props)18 reconcileChildren(wip, children)19}20export function updateText(wip) {21 wip.stateNode = document.createTextNode(wip.props.children)22}23export function updateFragmentComponent(wip) {24 reconcileChildren(wip, wip.props.children)25}26export function updateClassComponent(wip) {27 const { type, props } = wip28 const instance = new type(props)29 const children = instance.render()30 reconcileChildren(wip, children)31}32function deleteChild(returnFiber, childToDelete) {33 const deletions = returnFiber.deletions34 if (deletions) {35 returnFiber.deletions.push(childToDelete)36 } else {37 returnFiber.deletions = [childToDelete]38 }39}40function reconcileChildren(wip, children) {41 if (isStringOrNumber(children)) {42 return43 }44 const newChildren = isArray(children) ? children : [children]45 let previousNewFiber = null // 记录上一次的fiber46 let oldFiber = wip.alternate?.child47 for (let i = 0; i < newChildren.length; i++) {48 const newChild = newChildren[i]49 const newFiber = createFiber(newChild, wip)50 const same = sameNode(newFiber, oldFiber)51 if (same) {52 Object.assign(newFiber, {53 stateNode: oldFiber.stateNode,54 alternate: oldFiber,...

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FiberWork.js

Source:FiberWork.js Github

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1import diffFiberNode from './FiberDiff';2import { createDom } from '../cute-react-dom/Dom';3import { flatArray } from '../Utils';4function reconcileChildren(parentFiber, childrenFiber) {5 if (childrenFiber === null || childrenFiber === undefined) {6 return;7 }8 let children = Array.isArray(childrenFiber) ? childrenFiber : [childrenFiber];9 // 拍平数组，针对 props.children 为数组这种情况10 // <div>11 // <div></div>12 // {props.children}13 // </div>14 children = flatArray(children);15 let oldChildFiber = parentFiber.alternate && parentFiber.alternate.child;16 // 下面的操作就是拼接 fiber 链表17 let prevFiber = null;18 for (let i = 0; i < children.length || oldChildFiber !== null; i++) {19 const child = children[i];20 const newFiber = diffFiberNode(oldChildFiber, child, parentFiber);21 if (i === 0) {22 parentFiber.child = newFiber;23 } else {24 prevFiber.sibling = newFiber;25 }26 if (oldChildFiber) {27 oldChildFiber = oldChildFiber.sibling;28 }29 prevFiber = newFiber;30 }31}32function updateHostComponent(workInProgress) {33 if (!workInProgress.stateNode) {34 workInProgress.stateNode = createDom(workInProgress);35 }36 if (workInProgress.props) {37 reconcileChildren(workInProgress, workInProgress.props.children);38 }39}40let wipFiber = null;41let hookIndex = null;42function updateFunctionComponent(workInProgress) {43 wipFiber = workInProgress;44 hookIndex = 0;45 wipFiber.hooks = [];46 const { type, props } = workInProgress;47 const children = [type(props)];48 reconcileChildren(workInProgress, children);49}50function updateClassComponent(workInProgress) {51 const { type, props } = workInProgress;52 const instance = new type(props);53 const children = instance.render();54 reconcileChildren(workInProgress, children);55}56function getWorkInProgressFiber() {57 return wipFiber;58}59function getHookIndex() {60 return hookIndex;61}62function setHookIndex(index) {63 hookIndex = index;64}65export {66 updateHostComponent,67 updateFunctionComponent,68 updateClassComponent,...

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reconciler.js

Source:reconciler.js Github

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...3 value: true4});5exports.reconcileChildren = reconcileChildren;6var _shared = require("./shared");7function reconcileChildren(wipFiber, children) {8 let oldFiber = wipFiber.alternate && wipFiber.alternate.child;9 let previousSibling = null;10 let index = 0;11 while (index < children.length || oldFiber) {12 const child = children[index];13 let newFiber = null;14 const isSameType = oldFiber && child && child.type === oldFiber.type;15 if (isSameType) {16 newFiber = {17 type: child.type,18 props: child.props,19 dom: oldFiber.dom,20 parent: wipFiber,21 alternate: oldFiber,...

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kreact-dom.js

Source:kreact-dom.js Github

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...15}16function updateTextComponent(vNode) {17 return document.createTextNode(vNode);18}19function reconcileChildren(node, children) {20 if(children === void 0) {21 return;22 }23 const newChildren = Array.isArray(children) ? children : [children];24 for (let newChild of newChildren) {25 render(newChild, node);26 }27}28function crateNode(vNode) {29 let node;30 console.log(vNode);31 const { type, props={} } = vNode;32 if (typeof type === 'string') {33 node = updateHostComponent(vNode);34 } else {35 node = updateTextComponent(vNode);36 }37 reconcileChildren(node, props.children);38 return node;39}...

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.screenshot({ path: 'google.png' });7 await browser.close();8})();

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Using AI Code Generation

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1const { chromium } = require('playwright');2const fs = require('fs');3const path = require('path');4(async () => {5 const browser = await chromium.launch({ headless: false });6 const context = await browser.newContext();7 const page = await context.newPage();8 const root = await page.$('html');9 const children = await root.$$('body');10 const childrenOfBody = await children[0].$$('div');11 const childrenOfDiv = await childrenOfBody[0].$$('form');12 const childrenOfForm = await childrenOfDiv[0].$$('div');13 const childrenOfDiv1 = await childrenOfForm[0].$$('div');14 const childrenOfDiv2 = await childrenOfDiv1[0].$$('div');15 const childrenOfDiv3 = await childrenOfDiv2[0].$$('div');16 const childrenOfDiv4 = await childrenOfDiv3[0].$$('a');17 const childrenOfA = await childrenOfDiv4[0].$$('span');18 const childrenOfSpan = await childrenOfA[0].$$('svg');19 const childrenOfSvg = await childrenOfSpan[0].$$('path');20 const childrenOfPath = await childrenOfSvg[0].$$('path');21 const childrenOfPath1 = await childrenOfPath[0].$$('path');22 const childrenOfPath2 = await childrenOfPath1[0].$$('path');23 const childrenOfPath3 = await childrenOfPath2[0].$$('

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1const { reconcileChildren } = require('playwright/lib/server/dom.js');2const { parseSelector } = require('playwright/lib/server/selectorsParser.js');3const { parseFunction } = require('playwright/lib/server/frames.js');4const dom = new DOM();5const root = dom.createDocument();6const body = dom.createElement('body');7dom.appendChild(root, body);8const selector = parseSelector('css=body');9const selector2 = parseSelector('css=div');10const selector3 = parseSelector('css=span');11const selector4 = parseSelector('css=span');12const selector5 = parseSelector('css=div');13const selector6 = parseSelector('css=div');14const selector7 = parseSelector('css=span');15const selector8 = parseSelector('css=div');16const selector9 = parseSelector('css=div');17const selector10 = parseSelector('css=span');18const selector11 = parseSelector('css=span');19const selector12 = parseSelector('css=div');20const selector13 = parseSelector('css=span');21const selector14 = parseSelector('css=div');22const selector15 = parseSelector('css=div');23const selector16 = parseSelector('css=span');24const selector17 = parseSelector('css=div');25const selector18 = parseSelector('css=span');26const selector19 = parseSelector('css=span');27const selector20 = parseSelector('css=div');28const selector21 = parseSelector('css=div');29const selector22 = parseSelector('css=span');30const selector23 = parseSelector('css=div');31const selector24 = parseSelector('css=span');32const selector25 = parseSelector('css=span');33const selector26 = parseSelector('css=div');34const selector27 = parseSelector('css=div');35const selector28 = parseSelector('css=span');36const selector29 = parseSelector('css=div');37const selector30 = parseSelector('css=span');38const selector31 = parseSelector('css=span');39const selector32 = parseSelector('css=div');40const selector33 = parseSelector('css=div');41const selector34 = parseSelector('css=span');42const selector35 = parseSelector('css=div');43const selector36 = parseSelector('css=span');44const selector37 = parseSelector('css=span');45const selector38 = parseSelector('css=div');

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1const { reconcileChildren } = require('playwright/lib/server/dom.js');2const { parse } = require('playwright/lib/server/common/parser.js');3const { parseHtml } = require('playwright/lib/server/common/html.js');4const { serializeNode } = require('playwright/lib/server/common/serializers.js');5const { parseFragment } = require('playwright/lib/server/common/parser.js');6const htmlString = '<div>hello</div>';7const html = parseHtml(htmlString);8const node = parseFragment(html, html.firstChild);9const oldNode = parseFragment(html, html.firstChild);10const result = reconcileChildren(node, oldNode);11console.log(serializeNode(result));12[MIT](LICENSE)

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Using AI Code Generation

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1const { Playwright } = require('playwright');2const playwright = new Playwright({3 drivers: { chromium: { version: 'latest' } },4});5const browser = await playwright.chromium.launch();6const context = await browser.newContext();7const page = await context.newPage();8const { Internal } = require('playwright/lib/server/dom');9const internal = new Internal(page);10const { ElementHandle } = require('playwright/lib/server/dom');11const { Frame } = require('playwright/lib/server/frame');12const { Page } = require('playwright/lib/server/page');13const { JSHandle } = require('playwright/lib/server/javascript');14const { serializeResult } = require('playwright/lib/server/serializers');15const { JSHandleChannel } = require('playwright/lib/channels');16const { ElementHandleChannel } = require('playwright/lib/channels');17const { FrameChannel } = require('playwright/lib/channels');18const { PageChannel } = require('playwright/lib/channels');19const { CDPSession } = require('playwright/lib/cjs/server/cdpsession');20const { CDPSessionChannel } = require('playwright/lib/channels');21const { Dialog } = require('playwright/lib/server/dialog');22const { DialogChannel } = require('playwright/lib/channels');23const { JSHandleDispatcher } = require('playwright/lib/server/dispatchers');24const { ElementHandleDispatcher } =25 require('playwright/lib/server/dispatchers');26const { FrameDispatcher } = require('playwright/lib/server/dispatchers');27const { PageDispatcher } = require('playwright/lib/server/dispatchers');28const { CDPSessionDispatcher } = require('playwright/lib/server/dispatchers');29const { DialogDispatcher } = require('playwright/lib/server/dispatchers');30const { JSHandleInitializer } = require('playwright/lib/server/initializers');31const { ElementHandleInitializer } =32 require('playwright/lib/server/initializers');33const { FrameInitializer } = require('playwright/lib/server/initializers');34const { PageInitializer } = require('playwright/lib/server/initializers');35const { CDPSessionInitializer } = require('playwright/lib/server/initializers');36const { DialogInitializer } = require('playwright/lib/server/initializers');37const { JSHandleOwner } = require('playwright/lib/server/owners');38const { Element

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1const pwInternal = require('playwright/lib/server/playwright').Playwright._internal;2const { reconcileChildren } = pwInternal;3const { parseSelector } = require('playwright/lib/server/common/selectorParser');4const { parseModifiers } = require('playwright/lib/server/common/selectors');5const { parseScript } = require('playwright/lib/server/common/javascript');6const { toJSHandle } = require('playwright/lib/server/common/converters');7const { ElementHandle } = require('playwright/lib/server/dom');8const { createHandle } = require('playwright/lib/server/common/createHandle');9const { createJSHandle } = require('playwright/lib/server/common/createJSHandle');10const { createHandleScope } = require('playwright/lib/server/common/handleScope');11const { createChannelOwner } = require('playwright/lib/server/common/channelOwner');12const { createChannelOwnerFromParent } = require('playwright/lib/server/common/channelOwner');13const { createGuid } = require('playwright/lib/server/common/utils');14const { createWaitTask } = require('playwright/lib/server/common/waitTask');15const { createWaitForFunctionTask } = require('playwright/lib/server/common/waitForFunctionTask');16const { createWaitForNavigationTask } = require('playwright/lib/server/common/waitForNavigationTask');17const { createWaitForSelectorTask } = require('playwright/lib/server/common/waitForSelectorTask');18const { createWaitForEventTask } = require('playwright/lib/server/common/waitForEventTask');19const { createWaitForTimeoutTask } = require('playwright/lib/server/common/waitForTimeoutTask');20const { createWaitForLoadStateTask } = require('playwright/lib/server/common/waitForLoadStateTask');21const { createWaitForURLTask } = require('playwright/lib/server/common/waitForURLTask');22const { createWaitForFrameTask } = require('playwright/lib/server/common/waitForFrameTask');23const { createWaitForWorkerTask } = require('playwright/lib/server/common/waitForWorkerTask');24const { createWaitForRequestTask } = require('playwright/lib/server/common/waitForRequestTask');25const { createWaitForResponseTask } = require('playwright/lib/server/common/waitForResponseTask');26const { createWaitForFileChooserTask } = require('playwright/lib/server/common/waitForFileChooserTask');27const { createWaitForConsoleMessageTask } = require('playwright/lib/server

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1const { PlaywrightInternal } = require('playwright/lib/server/playwright');2const { ElementHandle } = require('playwright/lib/server/dom');3const dummyElementHandle = new ElementHandle(null, null, null, null, null, null);4const dummyInternal = new PlaywrightInternal(null, null, null, null, null, null, null, null);5const dummyNode = {6 attributes: {7 }8};9const dummyNode2 = {10 attributes: {11 }12};13const dummyNode3 = {14 attributes: {15 }16};17const dummyNode4 = {18 attributes: {19 }20};21const dummyNode5 = {22 attributes: {23 }24};25const dummyNode6 = {26 attributes: {27 }28};29const dummyNode7 = {30 attributes: {31 }32};33const dummyNode8 = {34 attributes: {35 }36};37const dummyNode9 = {38 attributes: {39 }40};41const dummyNode10 = {42 attributes: {43 }44};45const dummyNode11 = {46 attributes: {47 }48};49const dummyNode12 = {50 attributes: {51 }52};53const dummyNode13 = {54 attributes: {

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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:

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.

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