How to use attachPingListener method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberUnwindWork.js

Source: ReactFiberUnwindWork.js Github

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...135 };136 }137 return update;138}139function attachPingListener(140 root: FiberRoot,141 renderExpirationTime: ExpirationTime,142 thenable: Thenable,143) {144 /​/​ Attach a listener to the promise to "ping" the root and retry. But145 /​/​ only if one does not already exist for the current render expiration146 /​/​ time (which acts like a "thread ID" here).147 let pingCache = root.pingCache;148 let threadIDs;149 if (pingCache === null) {150 pingCache = root.pingCache = new PossiblyWeakMap();151 threadIDs = new Set();152 pingCache.set(thenable, threadIDs);153 } else {154 threadIDs = pingCache.get(thenable);155 if (threadIDs === undefined) {156 threadIDs = new Set();157 pingCache.set(thenable, threadIDs);158 }159 }160 if (!threadIDs.has(renderExpirationTime)) {161 /​/​ Memoize using the thread ID to prevent redundant listeners.162 threadIDs.add(renderExpirationTime);163 let ping = pingSuspendedRoot.bind(164 null,165 root,166 thenable,167 renderExpirationTime,168 );169 if (enableSchedulerTracing) {170 ping = Schedule_tracing_wrap(ping);171 }172 thenable.then(ping, ping);173 }174}175function throwException(176 root: FiberRoot,177 returnFiber: Fiber,178 sourceFiber: Fiber,179 value: mixed,180 renderExpirationTime: ExpirationTime,181) {182 /​/​ The source fiber did not complete.183 sourceFiber.effectTag |= Incomplete;184 /​/​ Its effect list is no longer valid.185 sourceFiber.firstEffect = sourceFiber.lastEffect = null;186 if (187 value !== null &&188 typeof value === 'object' &&189 typeof value.then === 'function'190 ) {191 /​/​ This is a thenable.192 const thenable: Thenable = (value: any);193 /​/​ Schedule the nearest Suspense to re-render the timed out view.194 let workInProgress = returnFiber;195 do {196 if (197 workInProgress.tag === SuspenseComponent &&198 shouldCaptureSuspense(workInProgress)199 ) {200 /​/​ Found the nearest boundary.201 /​/​ Stash the promise on the boundary fiber. If the boundary times out, we'll202 /​/​ attach another listener to flip the boundary back to its normal state.203 const thenables: Set<Thenable> = (workInProgress.updateQueue: any);204 if (thenables === null) {205 const updateQueue = (new Set(): any);206 updateQueue.add(thenable);207 workInProgress.updateQueue = updateQueue;208 } else {209 thenables.add(thenable);210 }211 /​/​ If the boundary is outside of concurrent mode, we should *not*212 /​/​ suspend the commit. Pretend as if the suspended component rendered213 /​/​ null and keep rendering. In the commit phase, we'll schedule a214 /​/​ subsequent synchronous update to re-render the Suspense.215 /​/​216 /​/​ Note: It doesn't matter whether the component that suspended was217 /​/​ inside a concurrent mode tree. If the Suspense is outside of it, we218 /​/​ should *not* suspend the commit.219 if ((workInProgress.mode & ConcurrentMode) === NoContext) {220 workInProgress.effectTag |= DidCapture;221 /​/​ We're going to commit this fiber even though it didn't complete.222 /​/​ But we shouldn't call any lifecycle methods or callbacks. Remove223 /​/​ all lifecycle effect tags.224 sourceFiber.effectTag &= ~(LifecycleEffectMask | Incomplete);225 if (sourceFiber.tag === ClassComponent) {226 const currentSourceFiber = sourceFiber.alternate;227 if (currentSourceFiber === null) {228 /​/​ This is a new mount. Change the tag so it's not mistaken for a229 /​/​ completed class component. For example, we should not call230 /​/​ componentWillUnmount if it is deleted.231 sourceFiber.tag = IncompleteClassComponent;232 } else {233 /​/​ When we try rendering again, we should not reuse the current fiber,234 /​/​ since it's known to be in an inconsistent state. Use a force updte to235 /​/​ prevent a bail out.236 const update = createUpdate(Sync);237 update.tag = ForceUpdate;238 enqueueUpdate(sourceFiber, update);239 }240 }241 /​/​ The source fiber did not complete. Mark it with Sync priority to242 /​/​ indicate that it still has pending work.243 sourceFiber.expirationTime = Sync;244 /​/​ Exit without suspending.245 return;246 }247 /​/​ Confirmed that the boundary is in a concurrent mode tree. Continue248 /​/​ with the normal suspend path.249 attachPingListener(root, renderExpirationTime, thenable);250 workInProgress.effectTag |= ShouldCapture;251 workInProgress.expirationTime = renderExpirationTime;252 return;253 } else if (254 enableSuspenseServerRenderer &&255 workInProgress.tag === DehydratedSuspenseComponent256 ) {257 attachPingListener(root, renderExpirationTime, thenable);258 /​/​ Since we already have a current fiber, we can eagerly add a retry listener.259 let retryCache = workInProgress.memoizedState;260 if (retryCache === null) {261 retryCache = workInProgress.memoizedState = new PossiblyWeakSet();262 const current = workInProgress.alternate;263 invariant(264 current,265 'A dehydrated suspense boundary must commit before trying to render. ' +266 'This is probably a bug in React.',267 );268 current.memoizedState = retryCache;269 }270 /​/​ Memoize using the boundary fiber to prevent redundant listeners.271 if (!retryCache.has(thenable)) {...

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ReactFiberThrow.js

Source: ReactFiberThrow.js Github

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...139 };140 }141 return update;142}143function attachPingListener(144 root: FiberRoot,145 renderExpirationTime: ExpirationTime,146 thenable: Thenable,147) {148 /​/​ Attach a listener to the promise to "ping" the root and retry. But149 /​/​ only if one does not already exist for the current render expiration150 /​/​ time (which acts like a "thread ID" here).151 let pingCache = root.pingCache;152 let threadIDs;153 if (pingCache === null) {154 pingCache = root.pingCache = new PossiblyWeakMap();155 threadIDs = new Set();156 pingCache.set(thenable, threadIDs);157 } else {158 threadIDs = pingCache.get(thenable);159 if (threadIDs === undefined) {160 threadIDs = new Set();161 pingCache.set(thenable, threadIDs);162 }163 }164 if (!threadIDs.has(renderExpirationTime)) {165 /​/​ Memoize using the thread ID to prevent redundant listeners.166 threadIDs.add(renderExpirationTime);167 let ping = pingSuspendedRoot.bind(168 null,169 root,170 thenable,171 renderExpirationTime,172 );173 if (enableSchedulerTracing) {174 ping = Schedule_tracing_wrap(ping);175 }176 thenable.then(ping, ping);177 }178}179function throwException(180 root: FiberRoot,181 returnFiber: Fiber,182 sourceFiber: Fiber,183 value: mixed,184 renderExpirationTime: ExpirationTime,185) {186 /​/​ The source fiber did not complete.187 /​/​ 源 fiber 没有完成。188 sourceFiber.effectTag |= Incomplete;189 /​/​ Its effect list is no longer valid.190 /​/​ 其 effect 列表不再有效。191 sourceFiber.firstEffect = sourceFiber.lastEffect = null;192 if (193 value !== null &&194 typeof value === 'object' &&195 typeof value.then === 'function'196 ) {197 /​/​ This is a thenable.198 const thenable: Thenable = (value: any);199 checkForWrongSuspensePriorityInDEV(sourceFiber);200 let hasInvisibleParentBoundary = hasSuspenseContext(201 suspenseStackCursor.current,202 (InvisibleParentSuspenseContext: SuspenseContext),203 );204 /​/​ Schedule the nearest Suspense to re-render the timed out view.205 let workInProgress = returnFiber;206 do {207 if (208 workInProgress.tag === SuspenseComponent &&209 shouldCaptureSuspense(workInProgress, hasInvisibleParentBoundary)210 ) {211 /​/​ Found the nearest boundary.212 /​/​ Stash the promise on the boundary fiber. If the boundary times out, we'll213 /​/​ attach another listener to flip the boundary back to its normal state.214 const thenables: Set<Thenable> = (workInProgress.updateQueue: any);215 if (thenables === null) {216 const updateQueue = (new Set(): any);217 updateQueue.add(thenable);218 workInProgress.updateQueue = updateQueue;219 } else {220 thenables.add(thenable);221 }222 /​/​ If the boundary is outside of batched mode, we should *not*223 /​/​ suspend the commit. Pretend as if the suspended component rendered224 /​/​ null and keep rendering. In the commit phase, we'll schedule a225 /​/​ subsequent synchronous update to re-render the Suspense.226 /​/​227 /​/​ Note: It doesn't matter whether the component that suspended was228 /​/​ inside a batched mode tree. If the Suspense is outside of it, we229 /​/​ should *not* suspend the commit.230 if ((workInProgress.mode & BatchedMode) === NoMode) {231 workInProgress.effectTag |= DidCapture;232 /​/​ We're going to commit this fiber even though it didn't complete.233 /​/​ But we shouldn't call any lifecycle methods or callbacks. Remove234 /​/​ all lifecycle effect tags.235 sourceFiber.effectTag &= ~(LifecycleEffectMask | Incomplete);236 if (sourceFiber.tag === ClassComponent) {237 const currentSourceFiber = sourceFiber.alternate;238 if (currentSourceFiber === null) {239 /​/​ This is a new mount. Change the tag so it's not mistaken for a240 /​/​ completed class component. For example, we should not call241 /​/​ componentWillUnmount if it is deleted.242 sourceFiber.tag = IncompleteClassComponent;243 } else {244 /​/​ When we try rendering again, we should not reuse the current fiber,245 /​/​ since it's known to be in an inconsistent state. Use a force updte to246 /​/​ prevent a bail out.247 const update = createUpdate(Sync, null);248 update.tag = ForceUpdate;249 enqueueUpdate(sourceFiber, update);250 }251 }252 /​/​ The source fiber did not complete. Mark it with Sync priority to253 /​/​ indicate that it still has pending work.254 sourceFiber.expirationTime = Sync;255 /​/​ Exit without suspending.256 return;257 }258 /​/​ Confirmed that the boundary is in a concurrent mode tree. Continue259 /​/​ with the normal suspend path.260 attachPingListener(root, renderExpirationTime, thenable);261 workInProgress.effectTag |= ShouldCapture;262 workInProgress.expirationTime = renderExpirationTime;263 return;264 } else if (265 enableSuspenseServerRenderer &&266 workInProgress.tag === DehydratedSuspenseComponent267 ) {268 attachPingListener(root, renderExpirationTime, thenable);269 /​/​ Since we already have a current fiber, we can eagerly add a retry listener.270 let retryCache = workInProgress.memoizedState;271 if (retryCache === null) {272 retryCache = workInProgress.memoizedState = new PossiblyWeakSet();273 const current = workInProgress.alternate;274 invariant(275 current,276 'A dehydrated suspense boundary must commit before trying to render. ' +277 'This is probably a bug in React.',278 );279 current.memoizedState = retryCache;280 }281 /​/​ Memoize using the boundary fiber to prevent redundant listeners.282 if (!retryCache.has(thenable)) {...

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ReactFiberThrow.old.js

Source: ReactFiberThrow.old.js Github

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...61 };62 }63 return update;64 }65 function attachPingListener(root, wakeable, lanes) {66 /​/​ Attach a listener to the promise to "ping" the root and retry. But only if67 /​/​ one does not already exist for the lanes we're currently rendering (which68 /​/​ acts like a "thread ID" here).69 var pingCache = root.pingCache;70 var threadIDs;71 if (pingCache === null) {72 pingCache = root.pingCache = new PossiblyWeakMap$2();73 threadIDs = new Set();74 pingCache.set(wakeable, threadIDs);75 } else {76 threadIDs = pingCache.get(wakeable);77 if (threadIDs === undefined) {78 threadIDs = new Set();79 pingCache.set(wakeable, threadIDs);80 }81 }82 if (!threadIDs.has(lanes)) {83 /​/​ Memoize using the thread ID to prevent redundant listeners.84 threadIDs.add(lanes);85 var ping = pingSuspendedRoot.bind(null, root, wakeable, lanes);86 wakeable.then(ping, ping);87 }88 }89 function throwException(root, returnFiber, sourceFiber, value, rootRenderLanes) {90 /​/​ The source fiber did not complete.91 sourceFiber.flags |= Incomplete; /​/​ Its effect list is no longer valid.92 sourceFiber.firstEffect = sourceFiber.lastEffect = null;93 if (value !== null && typeof value === 'object' && typeof value.then === 'function') {94 /​/​ This is a wakeable.95 var wakeable = value;96 {97 markComponentSuspended(sourceFiber, wakeable);98 }99 if ((sourceFiber.mode & BlockingMode) === NoMode) {100 /​/​ Reset the memoizedState to what it was before we attempted101 /​/​ to render it.102 var currentSource = sourceFiber.alternate;103 if (currentSource) {104 sourceFiber.updateQueue = currentSource.updateQueue;105 sourceFiber.memoizedState = currentSource.memoizedState;106 sourceFiber.lanes = currentSource.lanes;107 } else {108 sourceFiber.updateQueue = null;109 sourceFiber.memoizedState = null;110 }111 }112 var hasInvisibleParentBoundary = hasSuspenseContext(suspenseStackCursor.current, InvisibleParentSuspenseContext); /​/​ Schedule the nearest Suspense to re-render the timed out view.113 var _workInProgress = returnFiber;114 do {115 if (_workInProgress.tag === SuspenseComponent && shouldCaptureSuspense(_workInProgress, hasInvisibleParentBoundary)) {116 /​/​ Found the nearest boundary.117 /​/​ Stash the promise on the boundary fiber. If the boundary times out, we'll118 /​/​ attach another listener to flip the boundary back to its normal state.119 var wakeables = _workInProgress.updateQueue;120 if (wakeables === null) {121 var updateQueue = new Set();122 updateQueue.add(wakeable);123 _workInProgress.updateQueue = updateQueue;124 } else {125 wakeables.add(wakeable);126 } /​/​ If the boundary is outside of blocking mode, we should *not*127 /​/​ suspend the commit. Pretend as if the suspended component rendered128 /​/​ null and keep rendering. In the commit phase, we'll schedule a129 /​/​ subsequent synchronous update to re-render the Suspense.130 /​/​131 /​/​ Note: It doesn't matter whether the component that suspended was132 /​/​ inside a blocking mode tree. If the Suspense is outside of it, we133 /​/​ should *not* suspend the commit.134 if ((_workInProgress.mode & BlockingMode) === NoMode) {135 _workInProgress.flags |= DidCapture;136 sourceFiber.flags |= ForceUpdateForLegacySuspense; /​/​ We're going to commit this fiber even though it didn't complete.137 /​/​ But we shouldn't call any lifecycle methods or callbacks. Remove138 /​/​ all lifecycle effect tags.139 sourceFiber.flags &= ~(LifecycleEffectMask | Incomplete);140 if (sourceFiber.tag === ClassComponent) {141 var currentSourceFiber = sourceFiber.alternate;142 if (currentSourceFiber === null) {143 /​/​ This is a new mount. Change the tag so it's not mistaken for a144 /​/​ completed class component. For example, we should not call145 /​/​ componentWillUnmount if it is deleted.146 sourceFiber.tag = IncompleteClassComponent;147 } else {148 /​/​ When we try rendering again, we should not reuse the current fiber,149 /​/​ since it's known to be in an inconsistent state. Use a force update to150 /​/​ prevent a bail out.151 var update = createUpdate(NoTimestamp, SyncLane);152 update.tag = ForceUpdate;153 enqueueUpdate(sourceFiber, update);154 }155 } /​/​ The source fiber did not complete. Mark it with Sync priority to156 /​/​ indicate that it still has pending work.157 sourceFiber.lanes = mergeLanes(sourceFiber.lanes, SyncLane); /​/​ Exit without suspending.158 return;159 } /​/​ Confirmed that the boundary is in a concurrent mode tree. Continue160 /​/​ with the normal suspend path.161 /​/​162 /​/​ After this we'll use a set of heuristics to determine whether this163 /​/​ render pass will run to completion or restart or "suspend" the commit.164 /​/​ The actual logic for this is spread out in different places.165 /​/​166 /​/​ This first principle is that if we're going to suspend when we complete167 /​/​ a root, then we should also restart if we get an update or ping that168 /​/​ might unsuspend it, and vice versa. The only reason to suspend is169 /​/​ because you think you might want to restart before committing. However,170 /​/​ it doesn't make sense to restart only while in the period we're suspended.171 /​/​172 /​/​ Restarting too aggressively is also not good because it starves out any173 /​/​ intermediate loading state. So we use heuristics to determine when.174 /​/​ Suspense Heuristics175 /​/​176 /​/​ If nothing threw a Promise or all the same fallbacks are already showing,177 /​/​ then don't suspend/​restart.178 /​/​179 /​/​ If this is an initial render of a new tree of Suspense boundaries and180 /​/​ those trigger a fallback, then don't suspend/​restart. We want to ensure181 /​/​ that we can show the initial loading state as quickly as possible.182 /​/​183 /​/​ If we hit a "Delayed" case, such as when we'd switch from content back into184 /​/​ a fallback, then we should always suspend/​restart. Transitions apply185 /​/​ to this case. If none is defined, JND is used instead.186 /​/​187 /​/​ If we're already showing a fallback and it gets "retried", allowing us to show188 /​/​ another level, but there's still an inner boundary that would show a fallback,189 /​/​ then we suspend/​restart for 500ms since the last time we showed a fallback190 /​/​ anywhere in the tree. This effectively throttles progressive loading into a191 /​/​ consistent train of commits. This also gives us an opportunity to restart to192 /​/​ get to the completed state slightly earlier.193 /​/​194 /​/​ If there's ambiguity due to batching it's resolved in preference of:195 /​/​ 1) "delayed", 2) "initial render", 3) "retry".196 /​/​197 /​/​ We want to ensure that a "busy" state doesn't get force committed. We want to198 /​/​ ensure that new initial loading states can commit as soon as possible.199 attachPingListener(root, wakeable, rootRenderLanes);200 _workInProgress.flags |= ShouldCapture;201 _workInProgress.lanes = rootRenderLanes;202 return;203 } /​/​ This boundary already captured during this render. Continue to the next204 /​/​ boundary.205 _workInProgress = _workInProgress.return;206 } while (_workInProgress !== null); /​/​ No boundary was found. Fallthrough to error mode.207 /​/​ TODO: Use invariant so the message is stripped in prod?208 value = new Error((getComponentName(sourceFiber.type) || 'A React component') + ' suspended while rendering, but no fallback UI was specified.\n' + '\n' + 'Add a <Suspense fallback=...> component higher in the tree to ' + 'provide a loading indicator or placeholder to display.');209 } /​/​ We didn't find a boundary that could handle this type of exception. Start210 /​/​ over and traverse parent path again, this time treating the exception211 /​/​ as an error.212 renderDidError();213 value = createCapturedValue(value, sourceFiber);...

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FiberThrow.js

Source: FiberThrow.js Github

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...12import {13 renderDidError,14 pingSuspendedRoot,15} from '@Jeact/​vDOM/​FiberWorkLoop';16function attachPingListener(root, wakeable, lanes){17 let pingCache = root.pingCache;18 let threadIDs;19 if (pingCache === null){20 pingCache = root.pingCache = new WeakMap();21 threadIDs = new Set();22 pingCache.set(wakeable, threadIDs);23 } else {24 threadIDs = pingCache.get(wakeable);25 if(threadIDs === undefined){26 threadIDs = new Set();27 pingCache.set(wakeable, threadIDs);28 }29 }30 if (!threadIDs.has(lanes)){31 threadIDs.add(lanes);32 const ping = pingSuspendedRoot.bind(null, root, wakeable, lanes);33 wakeable.then(ping, ping);34 }35}36export function throwException(37 root, 38 returnFiber, 39 sourceFiber,40 value,41 rootRenderLanes42){43 sourceFiber.flags |= Incomplete;44 if(45 value !==null &&46 typeof value === 'object' &&47 typeof value.then === 'function'48 ){49 const wakeable = value;50 /​/​ hasSuspenseContext()51 const hasInvisibleParent = 52 (suspenseStackCursor.current & 53 InvisibleParentSuspenseContext) !== 0;54 /​/​ Schedule the nearest Suspense to re-render the timed out view.55 let wip = returnFiber;56 do {57 if(58 wip.tag === SuspenseComponent &&59 shouldCaptureSuspense(60 wip, 61 hasInvisibleParent62 )63 ){64 /​/​ Found the nearest boundary.65 /​/​66 /​/​ Stash the promise.67 const wakeables = wip.updateQueue;68 if (wakeables === null){ 69 const updateQueue = new Set();70 updateQueue.add(wakeable);71 wip.updateQueue = updateQueue;72 } else {73 wakeables.add(wakeable);74 }75 attachPingListener(root, wakeable, rootRenderLanes);76 wip.flags |= ShouldCapture;77 wip.lanes = rootRenderLanes;78 return;79 }80 wip = wip.return;81 } while (wip !== null);82 }83 renderDidError();/​/​update exit status...

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Using AI Code Generation

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1const playwright = require('playwright');2const { attachPingListener } = require('playwright/​lib/​server/​browserServer');3(async () => {4 const browserServer = await playwright.chromium.launchServer();5 attachPingListener(browserServer);6 browserServer.on('pong', (message) => console.log(message));7})();8### `attachPingListener(browserServer: BrowserServer): void`9### `attachPingListener(browserServer: BrowserServer, options: { timeout: number, interval: number }): void`

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Using AI Code Generation

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1const playwright = require('playwright');2const path = require('path');3const fs = require('fs');4(async () => {5 const browser = await playwright.chromium.launch({ headless: false });6 const context = await browser.newContext();7 const page = await context.newPage();8 await page.addInitScript(() => {9 window.attachPingListener = (name) => {10 window.addEventListener('load', () => {11 window[name] = 'loaded';12 });13 };14 });15 await page.evaluate(() => {16 attachPingListener('page1');17 });18 await page.waitForTimeout(5000);19 const page2 = await context.newPage();20 await page2.evaluate(() => {21 attachPingListener('page2');22 });23 await page2.waitForTimeout(5000);24 const page3 = await context.newPage();25 await page3.evaluate(() => {26 attachPingListener('page3');27 });28 await page3.waitForTimeout(5000);29 console.log(await page.evaluate(() => window.page1));30 console.log(await page2.evaluate(() => window.page2));31 console.log(await page3.evaluate(() => window.page3));32 await browser.close();33})();34 at ExecutionContext._evaluateInternal (/​home/​user/​Downloads/​node_modules/​playwright/​lib/​cjs/​pw-run.js:327:19)35 at processTicksAndRejections (internal/​process/​task_queues.js:93:5)36 at async ExecutionContext.evaluate (/​home/​user/​Downloads/​node_modules/​playwright/​lib/​cjs/​pw-run.js:309:16)37 at async Page.evaluate (/​home/​user/​Downloads/​node_modules/​playwright/​lib/​cjs/​pw-run.js:112:22)38 at async Promise.all (index 0)39 at async Promise.all (index 0)

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Using AI Code Generation

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1const { attachPingListener } = require('playwright/​lib/​server/​chromium/​crConnection');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 attachPingListener(page);8 await browser.close();9})();10const { EventEmitter } = require('events');11function attachPingListener(page) {12 const client = page._delegate._connection._client;13 client._connection.on('message', (message) => {14 if (message.method === 'Network.loadingFailed') {15 console.log('Network.loadingFailed event received');16 console.log('message = ', message);17 }18 });19}

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Using AI Code Generation

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1const { attachPingListener } = require('playwright/​lib/​server/​page');2attachPingListener(page);3const { attachPingListener } = require('playwright/​lib/​server/​browserContext');4attachPingListener(context);5const { attachPingListener } = require('playwright/​lib/​server/​browserServer');6attachPingListener(browserServer);7const { attachPingListener } = require('playwright/​lib/​server/​browser');8attachPingListener(browser);9const { attachPingListener } = require('playwright/​lib/​server/​browserFetcher');10attachPingListener(browserFetcher);11const { attachPingListener } = require('playwright/​lib/​server/​browserType');12attachPingListener(browserType);13const { attachPingListener } = require('playwright/​lib/​server/​deviceDescriptors');14attachPingListener(deviceDescriptors);15const { attachPingListener } = require('playwright/​lib/​server/​download');16attachPingListener(download);17const { attachPingListener } = require('playwright/​lib/​server/​frame');18attachPingListener(frame);19const { attachPingListener } = require('playwright/​lib/​server/​helper');20attachPingListener(helper);21const { attachPingListener } = require('playwright/​lib/​server/​httpServer');22attachPingListener(httpServer);23const { attachPingListener } = require('playwright/​lib/​server/​jsHandle');24attachPingListener(jsHandle);25const { attachPingListener } = require('playwright/​lib/​server/​networkManager');26attachPingListener(networkManager);27const { attachPingListener } = require('playwright/​lib/​server/​progress');

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Using AI Code Generation

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1const { attachPingListener } = require('playwright/​lib/​server/​browserType.js');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch({ headless: false });5 attachPingListener(browser);6 const page = await browser.newPage();7})();

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Using AI Code Generation

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1const { attachPingListener } = require('playwright/​lib/​utils/​transport');2attachPingListener((message) => {3 console.log(message);4});5const { attachPingListener } = require('playwright/​lib/​utils/​transport');6attachPingListener((message) => {7 console.log(message);8});9const { attachPingListener } = require('playwright/​lib/​utils/​transport');10attachPingListener((message) => {11 console.log(message);12});13const { attachPingListener } = require('playwright/​lib/​utils/​transport');14attachPingListener((message) => {15 console.log(message);16});17const { attachPingListener } = require('playwright/​lib/​utils/​transport');18attachPingListener((message) => {19 console.log(message);20});21const { attachPingListener } = require('playwright/​lib/​utils/​transport');22attachPingListener((message) => {23 console.log(message);24});25const { attachPingListener } = require('playwright/​lib/​utils/​transport');26attachPingListener((message) => {27 console.log(message);28});29const { attachPingListener } = require('playwright/​lib/​utils/​transport');30attachPingListener((message) => {31 console.log(message);32});33const { attachPingListener } = require('playwright/​lib/​utils/​transport');34attachPingListener((message) => {35 console.log(message);36});37const { attachPingListener } = require('playwright/​lib/​utils/​transport');38attachPingListener((message) => {39 console.log(message);40});41const { attachPingListener } = require('playwright/​lib/​utils/​transport');42attachPingListener((message) => {43 console.log(message);44});45const { attachPingListener } = require('playwright/​lib/​utils

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Using AI Code Generation

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1const playwright = require('playwright-internal');2const { attachPingListener } = playwright;3attachPingListener((ping) => {4 console.log(ping);5});6(async () => {7 const browser = await playwright.chromium.launch();8 const page = await browser.newPage();9 await page.screenshot({ path: 'example.png' });10 await browser.close();11})();12(async () => {13 const browser = await playwright.firefox.launch();14 const page = await browser.newPage();15 await page.screenshot({ path: 'example.png' });16 await browser.close();17})();18(async () => {19 const browser = await playwright.webkit.launch();20 const page = await browser.newPage();21 await page.screenshot({ path: 'example.png' });22 await browser.close();23})();24(async () => {25 const browser = await playwright.chromium.launch();26 const context = await browser.newContext();27 const page = await context.newPage();28 await page.screenshot({ path: 'example.png' });29 await browser.close();30})();31(async () => {32 const browser = await playwright.firefox.launch();33 const context = await browser.newContext();34 const page = await context.newPage();35 await page.screenshot({ path: 'example.png' });36 await browser.close();37})();38(async () => {39 const browser = await playwright.webkit.launch();40 const context = await browser.newContext();41 const page = await context.newPage();42 await page.screenshot({ path: 'example.png' });43 await browser.close();44})();45(async () => {46 const browser = await playwright.chromium.launch();47 const context = await browser.newContext();48 const page = await context.newPage();49 await page.screenshot({ path: 'example.png' });50 await browser.close();51})();

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Using AI Code Generation

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1const { attachPingListener } = require('playwright-core/​lib/​server/​browserType');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 attachPingListener(page, () => {7 console.log('PING!');8 });9 await browser.close();10})();11const puppeteer = require('puppeteer');12(async () => {13 const browser = await puppeteer.launch();14 const page = await browser.newPage();15 page.on('targetcreated', () => {16 console.log('PING!');17 });18 await browser.close();19})();

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firefox browser does not start in playwright

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

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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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