Best JavaScript code snippet using playwright-internal
65b6bd2ffbe6e4c46a631afcc31212818c6d58ReactDebugTool.js
Source:65b6bd2ffbe6e4c46a631afcc31212818c6d58ReactDebugTool.js  
...100    currentTimerNestedFlushDuration = 0;101    currentTimerDebugID = debugID;102    currentTimerType = timerType;103  };104  var endLifeCycleTimer = function endLifeCycleTimer(debugID, timerType) {105    if (currentFlushNesting === 0) {106      return;107    }108    if (currentTimerType !== timerType && !lifeCycleTimerHasWarned) {109      warning(false, 'There is an internal error in the React performance measurement code. ' + 'We did not expect %s timer to stop while %s timer is still in ' + 'progress for %s instance. Please report this as a bug in React.', timerType, currentTimerType || 'no', debugID === currentTimerDebugID ? 'the same' : 'another');110      lifeCycleTimerHasWarned = true;111    }112    if (_isProfiling) {113      currentFlushMeasurements.push({114        timerType: timerType,115        instanceID: debugID,116        duration: performanceNow() - currentTimerStartTime - currentTimerNestedFlushDuration117      });118    }119    currentTimerStartTime = 0;120    currentTimerNestedFlushDuration = 0;121    currentTimerDebugID = null;122    currentTimerType = null;123  };124  var pauseCurrentLifeCycleTimer = function pauseCurrentLifeCycleTimer() {125    var currentTimer = {126      startTime: currentTimerStartTime,127      nestedFlushStartTime: performanceNow(),128      debugID: currentTimerDebugID,129      timerType: currentTimerType130    };131    lifeCycleTimerStack.push(currentTimer);132    currentTimerStartTime = 0;133    currentTimerNestedFlushDuration = 0;134    currentTimerDebugID = null;135    currentTimerType = null;136  };137  var resumeCurrentLifeCycleTimer = function resumeCurrentLifeCycleTimer() {138    var _lifeCycleTimerStack$ = lifeCycleTimerStack.pop(),139        startTime = _lifeCycleTimerStack$.startTime,140        nestedFlushStartTime = _lifeCycleTimerStack$.nestedFlushStartTime,141        debugID = _lifeCycleTimerStack$.debugID,142        timerType = _lifeCycleTimerStack$.timerType;143    var nestedFlushDuration = performanceNow() - nestedFlushStartTime;144    currentTimerStartTime = startTime;145    currentTimerNestedFlushDuration += nestedFlushDuration;146    currentTimerDebugID = debugID;147    currentTimerType = timerType;148  };149  var lastMarkTimeStamp = 0;150  var canUsePerformanceMeasure = typeof performance !== 'undefined' && typeof performance.mark === 'function' && typeof performance.clearMarks === 'function' && typeof performance.measure === 'function' && typeof performance.clearMeasures === 'function';151  var shouldMark = function shouldMark(debugID) {152    if (!_isProfiling || !canUsePerformanceMeasure) {153      return false;154    }155    var element = ReactComponentTreeHook.getElement(debugID);156    if (element == null || typeof element !== 'object') {157      return false;158    }159    var isHostElement = typeof element.type === 'string';160    if (isHostElement) {161      return false;162    }163    return true;164  };165  var markBegin = function markBegin(debugID, markType) {166    if (!shouldMark(debugID)) {167      return;168    }169    var markName = debugID + '::' + markType;170    lastMarkTimeStamp = performanceNow();171    performance.mark(markName);172  };173  var markEnd = function markEnd(debugID, markType) {174    if (!shouldMark(debugID)) {175      return;176    }177    var markName = debugID + '::' + markType;178    var displayName = ReactComponentTreeHook.getDisplayName(debugID) || 'Unknown';179    var timeStamp = performanceNow();180    if (timeStamp - lastMarkTimeStamp > 0.1) {181      var measurementName = displayName + ' [' + markType + ']';182      performance.measure(measurementName, markName);183    }184    performance.clearMarks(markName);185    performance.clearMeasures(measurementName);186  };187  ReactDebugTool = {188    addHook: function addHook(hook) {189      hooks.push(hook);190    },191    removeHook: function removeHook(hook) {192      for (var i = 0; i < hooks.length; i++) {193        if (hooks[i] === hook) {194          hooks.splice(i, 1);195          i--;196        }197      }198    },199    isProfiling: function isProfiling() {200      return _isProfiling;201    },202    beginProfiling: function beginProfiling() {203      if (_isProfiling) {204        return;205      }206      _isProfiling = true;207      flushHistory.length = 0;208      resetMeasurements();209      ReactDebugTool.addHook(ReactHostOperationHistoryHook);210    },211    endProfiling: function endProfiling() {212      if (!_isProfiling) {213        return;214      }215      _isProfiling = false;216      resetMeasurements();217      ReactDebugTool.removeHook(ReactHostOperationHistoryHook);218    },219    getFlushHistory: function getFlushHistory() {220      return flushHistory;221    },222    onBeginFlush: function onBeginFlush() {223      currentFlushNesting++;224      resetMeasurements();225      pauseCurrentLifeCycleTimer();226      emitEvent('onBeginFlush');227    },228    onEndFlush: function onEndFlush() {229      resetMeasurements();230      currentFlushNesting--;231      resumeCurrentLifeCycleTimer();232      emitEvent('onEndFlush');233    },234    onBeginLifeCycleTimer: function onBeginLifeCycleTimer(debugID, timerType) {235      checkDebugID(debugID);236      emitEvent('onBeginLifeCycleTimer', debugID, timerType);237      markBegin(debugID, timerType);238      beginLifeCycleTimer(debugID, timerType);239    },240    onEndLifeCycleTimer: function onEndLifeCycleTimer(debugID, timerType) {241      checkDebugID(debugID);242      endLifeCycleTimer(debugID, timerType);243      markEnd(debugID, timerType);244      emitEvent('onEndLifeCycleTimer', debugID, timerType);245    },246    onBeginProcessingChildContext: function onBeginProcessingChildContext() {247      emitEvent('onBeginProcessingChildContext');248    },249    onEndProcessingChildContext: function onEndProcessingChildContext() {250      emitEvent('onEndProcessingChildContext');251    },252    onHostOperation: function onHostOperation(operation) {253      checkDebugID(operation.instanceID);254      emitEvent('onHostOperation', operation);255    },256    onSetState: function onSetState() {...747110cb83c5d9948fa42e36cd4e7f19ad369eReactDebugTool.js
Source:747110cb83c5d9948fa42e36cd4e7f19ad369eReactDebugTool.js  
...100    currentTimerNestedFlushDuration = 0;101    currentTimerDebugID = debugID;102    currentTimerType = timerType;103  };104  var endLifeCycleTimer = function endLifeCycleTimer(debugID, timerType) {105    if (currentFlushNesting === 0) {106      return;107    }108    if (currentTimerType !== timerType && !lifeCycleTimerHasWarned) {109      warning(false, 'There is an internal error in the React performance measurement code. ' + 'We did not expect %s timer to stop while %s timer is still in ' + 'progress for %s instance. Please report this as a bug in React.', timerType, currentTimerType || 'no', debugID === currentTimerDebugID ? 'the same' : 'another');110      lifeCycleTimerHasWarned = true;111    }112    if (_isProfiling) {113      currentFlushMeasurements.push({114        timerType: timerType,115        instanceID: debugID,116        duration: performanceNow() - currentTimerStartTime - currentTimerNestedFlushDuration117      });118    }119    currentTimerStartTime = 0;120    currentTimerNestedFlushDuration = 0;121    currentTimerDebugID = null;122    currentTimerType = null;123  };124  var pauseCurrentLifeCycleTimer = function pauseCurrentLifeCycleTimer() {125    var currentTimer = {126      startTime: currentTimerStartTime,127      nestedFlushStartTime: performanceNow(),128      debugID: currentTimerDebugID,129      timerType: currentTimerType130    };131    lifeCycleTimerStack.push(currentTimer);132    currentTimerStartTime = 0;133    currentTimerNestedFlushDuration = 0;134    currentTimerDebugID = null;135    currentTimerType = null;136  };137  var resumeCurrentLifeCycleTimer = function resumeCurrentLifeCycleTimer() {138    var _lifeCycleTimerStack$ = lifeCycleTimerStack.pop(),139        startTime = _lifeCycleTimerStack$.startTime,140        nestedFlushStartTime = _lifeCycleTimerStack$.nestedFlushStartTime,141        debugID = _lifeCycleTimerStack$.debugID,142        timerType = _lifeCycleTimerStack$.timerType;143    var nestedFlushDuration = performanceNow() - nestedFlushStartTime;144    currentTimerStartTime = startTime;145    currentTimerNestedFlushDuration += nestedFlushDuration;146    currentTimerDebugID = debugID;147    currentTimerType = timerType;148  };149  var lastMarkTimeStamp = 0;150  var canUsePerformanceMeasure = typeof performance !== 'undefined' && typeof performance.mark === 'function' && typeof performance.clearMarks === 'function' && typeof performance.measure === 'function' && typeof performance.clearMeasures === 'function';151  var shouldMark = function shouldMark(debugID) {152    if (!_isProfiling || !canUsePerformanceMeasure) {153      return false;154    }155    var element = ReactComponentTreeHook.getElement(debugID);156    if (element == null || typeof element !== 'object') {157      return false;158    }159    var isHostElement = typeof element.type === 'string';160    if (isHostElement) {161      return false;162    }163    return true;164  };165  var markBegin = function markBegin(debugID, markType) {166    if (!shouldMark(debugID)) {167      return;168    }169    var markName = debugID + '::' + markType;170    lastMarkTimeStamp = performanceNow();171    performance.mark(markName);172  };173  var markEnd = function markEnd(debugID, markType) {174    if (!shouldMark(debugID)) {175      return;176    }177    var markName = debugID + '::' + markType;178    var displayName = ReactComponentTreeHook.getDisplayName(debugID) || 'Unknown';179    var timeStamp = performanceNow();180    if (timeStamp - lastMarkTimeStamp > 0.1) {181      var measurementName = displayName + ' [' + markType + ']';182      performance.measure(measurementName, markName);183    }184    performance.clearMarks(markName);185    performance.clearMeasures(measurementName);186  };187  ReactDebugTool = {188    addHook: function addHook(hook) {189      hooks.push(hook);190    },191    removeHook: function removeHook(hook) {192      for (var i = 0; i < hooks.length; i++) {193        if (hooks[i] === hook) {194          hooks.splice(i, 1);195          i--;196        }197      }198    },199    isProfiling: function isProfiling() {200      return _isProfiling;201    },202    beginProfiling: function beginProfiling() {203      if (_isProfiling) {204        return;205      }206      _isProfiling = true;207      flushHistory.length = 0;208      resetMeasurements();209      ReactDebugTool.addHook(ReactHostOperationHistoryHook);210    },211    endProfiling: function endProfiling() {212      if (!_isProfiling) {213        return;214      }215      _isProfiling = false;216      resetMeasurements();217      ReactDebugTool.removeHook(ReactHostOperationHistoryHook);218    },219    getFlushHistory: function getFlushHistory() {220      return flushHistory;221    },222    onBeginFlush: function onBeginFlush() {223      currentFlushNesting++;224      resetMeasurements();225      pauseCurrentLifeCycleTimer();226      emitEvent('onBeginFlush');227    },228    onEndFlush: function onEndFlush() {229      resetMeasurements();230      currentFlushNesting--;231      resumeCurrentLifeCycleTimer();232      emitEvent('onEndFlush');233    },234    onBeginLifeCycleTimer: function onBeginLifeCycleTimer(debugID, timerType) {235      checkDebugID(debugID);236      emitEvent('onBeginLifeCycleTimer', debugID, timerType);237      markBegin(debugID, timerType);238      beginLifeCycleTimer(debugID, timerType);239    },240    onEndLifeCycleTimer: function onEndLifeCycleTimer(debugID, timerType) {241      checkDebugID(debugID);242      endLifeCycleTimer(debugID, timerType);243      markEnd(debugID, timerType);244      emitEvent('onEndLifeCycleTimer', debugID, timerType);245    },246    onBeginProcessingChildContext: function onBeginProcessingChildContext() {247      emitEvent('onBeginProcessingChildContext');248    },249    onEndProcessingChildContext: function onEndProcessingChildContext() {250      emitEvent('onEndProcessingChildContext');251    },252    onHostOperation: function onHostOperation(operation) {253      checkDebugID(operation.instanceID);254      emitEvent('onHostOperation', operation);255    },256    onSetState: function onSetState() {...72fa9dReactDebugTool.js
Source:72fa9dReactDebugTool.js  
...100    currentTimerNestedFlushDuration = 0;101    currentTimerDebugID = debugID;102    currentTimerType = timerType;103  };104  var endLifeCycleTimer = function endLifeCycleTimer(debugID, timerType) {105    if (currentFlushNesting === 0) {106      return;107    }108    if (currentTimerType !== timerType && !lifeCycleTimerHasWarned) {109      warning(false, 'There is an internal error in the React performance measurement code. ' + 'We did not expect %s timer to stop while %s timer is still in ' + 'progress for %s instance. Please report this as a bug in React.', timerType, currentTimerType || 'no', debugID === currentTimerDebugID ? 'the same' : 'another');110      lifeCycleTimerHasWarned = true;111    }112    if (_isProfiling) {113      currentFlushMeasurements.push({114        timerType: timerType,115        instanceID: debugID,116        duration: performanceNow() - currentTimerStartTime - currentTimerNestedFlushDuration117      });118    }119    currentTimerStartTime = 0;120    currentTimerNestedFlushDuration = 0;121    currentTimerDebugID = null;122    currentTimerType = null;123  };124  var pauseCurrentLifeCycleTimer = function pauseCurrentLifeCycleTimer() {125    var currentTimer = {126      startTime: currentTimerStartTime,127      nestedFlushStartTime: performanceNow(),128      debugID: currentTimerDebugID,129      timerType: currentTimerType130    };131    lifeCycleTimerStack.push(currentTimer);132    currentTimerStartTime = 0;133    currentTimerNestedFlushDuration = 0;134    currentTimerDebugID = null;135    currentTimerType = null;136  };137  var resumeCurrentLifeCycleTimer = function resumeCurrentLifeCycleTimer() {138    var _lifeCycleTimerStack$ = lifeCycleTimerStack.pop(),139        startTime = _lifeCycleTimerStack$.startTime,140        nestedFlushStartTime = _lifeCycleTimerStack$.nestedFlushStartTime,141        debugID = _lifeCycleTimerStack$.debugID,142        timerType = _lifeCycleTimerStack$.timerType;143    var nestedFlushDuration = performanceNow() - nestedFlushStartTime;144    currentTimerStartTime = startTime;145    currentTimerNestedFlushDuration += nestedFlushDuration;146    currentTimerDebugID = debugID;147    currentTimerType = timerType;148  };149  var lastMarkTimeStamp = 0;150  var canUsePerformanceMeasure = typeof performance !== 'undefined' && typeof performance.mark === 'function' && typeof performance.clearMarks === 'function' && typeof performance.measure === 'function' && typeof performance.clearMeasures === 'function';151  var shouldMark = function shouldMark(debugID) {152    if (!_isProfiling || !canUsePerformanceMeasure) {153      return false;154    }155    var element = ReactComponentTreeHook.getElement(debugID);156    if (element == null || typeof element !== 'object') {157      return false;158    }159    var isHostElement = typeof element.type === 'string';160    if (isHostElement) {161      return false;162    }163    return true;164  };165  var markBegin = function markBegin(debugID, markType) {166    if (!shouldMark(debugID)) {167      return;168    }169    var markName = debugID + '::' + markType;170    lastMarkTimeStamp = performanceNow();171    performance.mark(markName);172  };173  var markEnd = function markEnd(debugID, markType) {174    if (!shouldMark(debugID)) {175      return;176    }177    var markName = debugID + '::' + markType;178    var displayName = ReactComponentTreeHook.getDisplayName(debugID) || 'Unknown';179    var timeStamp = performanceNow();180    if (timeStamp - lastMarkTimeStamp > 0.1) {181      var measurementName = displayName + ' [' + markType + ']';182      performance.measure(measurementName, markName);183    }184    performance.clearMarks(markName);185    performance.clearMeasures(measurementName);186  };187  ReactDebugTool = {188    addHook: function addHook(hook) {189      hooks.push(hook);190    },191    removeHook: function removeHook(hook) {192      for (var i = 0; i < hooks.length; i++) {193        if (hooks[i] === hook) {194          hooks.splice(i, 1);195          i--;196        }197      }198    },199    isProfiling: function isProfiling() {200      return _isProfiling;201    },202    beginProfiling: function beginProfiling() {203      if (_isProfiling) {204        return;205      }206      _isProfiling = true;207      flushHistory.length = 0;208      resetMeasurements();209      ReactDebugTool.addHook(ReactHostOperationHistoryHook);210    },211    endProfiling: function endProfiling() {212      if (!_isProfiling) {213        return;214      }215      _isProfiling = false;216      resetMeasurements();217      ReactDebugTool.removeHook(ReactHostOperationHistoryHook);218    },219    getFlushHistory: function getFlushHistory() {220      return flushHistory;221    },222    onBeginFlush: function onBeginFlush() {223      currentFlushNesting++;224      resetMeasurements();225      pauseCurrentLifeCycleTimer();226      emitEvent('onBeginFlush');227    },228    onEndFlush: function onEndFlush() {229      resetMeasurements();230      currentFlushNesting--;231      resumeCurrentLifeCycleTimer();232      emitEvent('onEndFlush');233    },234    onBeginLifeCycleTimer: function onBeginLifeCycleTimer(debugID, timerType) {235      checkDebugID(debugID);236      emitEvent('onBeginLifeCycleTimer', debugID, timerType);237      markBegin(debugID, timerType);238      beginLifeCycleTimer(debugID, timerType);239    },240    onEndLifeCycleTimer: function onEndLifeCycleTimer(debugID, timerType) {241      checkDebugID(debugID);242      endLifeCycleTimer(debugID, timerType);243      markEnd(debugID, timerType);244      emitEvent('onEndLifeCycleTimer', debugID, timerType);245    },246    onBeginProcessingChildContext: function onBeginProcessingChildContext() {247      emitEvent('onBeginProcessingChildContext');248    },249    onEndProcessingChildContext: function onEndProcessingChildContext() {250      emitEvent('onEndProcessingChildContext');251    },252    onHostOperation: function onHostOperation(operation) {253      checkDebugID(operation.instanceID);254      emitEvent('onHostOperation', operation);255    },256    onSetState: function onSetState() {...f1631fcf9e01e313efd6959ee3d84473311828ReactDebugTool.js
Source:f1631fcf9e01e313efd6959ee3d84473311828ReactDebugTool.js  
...100    currentTimerNestedFlushDuration = 0;101    currentTimerDebugID = debugID;102    currentTimerType = timerType;103  };104  var endLifeCycleTimer = function endLifeCycleTimer(debugID, timerType) {105    if (currentFlushNesting === 0) {106      return;107    }108    if (currentTimerType !== timerType && !lifeCycleTimerHasWarned) {109      warning(false, 'There is an internal error in the React performance measurement code. ' + 'We did not expect %s timer to stop while %s timer is still in ' + 'progress for %s instance. Please report this as a bug in React.', timerType, currentTimerType || 'no', debugID === currentTimerDebugID ? 'the same' : 'another');110      lifeCycleTimerHasWarned = true;111    }112    if (_isProfiling) {113      currentFlushMeasurements.push({114        timerType: timerType,115        instanceID: debugID,116        duration: performanceNow() - currentTimerStartTime - currentTimerNestedFlushDuration117      });118    }119    currentTimerStartTime = 0;120    currentTimerNestedFlushDuration = 0;121    currentTimerDebugID = null;122    currentTimerType = null;123  };124  var pauseCurrentLifeCycleTimer = function pauseCurrentLifeCycleTimer() {125    var currentTimer = {126      startTime: currentTimerStartTime,127      nestedFlushStartTime: performanceNow(),128      debugID: currentTimerDebugID,129      timerType: currentTimerType130    };131    lifeCycleTimerStack.push(currentTimer);132    currentTimerStartTime = 0;133    currentTimerNestedFlushDuration = 0;134    currentTimerDebugID = null;135    currentTimerType = null;136  };137  var resumeCurrentLifeCycleTimer = function resumeCurrentLifeCycleTimer() {138    var _lifeCycleTimerStack$ = lifeCycleTimerStack.pop(),139        startTime = _lifeCycleTimerStack$.startTime,140        nestedFlushStartTime = _lifeCycleTimerStack$.nestedFlushStartTime,141        debugID = _lifeCycleTimerStack$.debugID,142        timerType = _lifeCycleTimerStack$.timerType;143    var nestedFlushDuration = performanceNow() - nestedFlushStartTime;144    currentTimerStartTime = startTime;145    currentTimerNestedFlushDuration += nestedFlushDuration;146    currentTimerDebugID = debugID;147    currentTimerType = timerType;148  };149  var lastMarkTimeStamp = 0;150  var canUsePerformanceMeasure = typeof performance !== 'undefined' && typeof performance.mark === 'function' && typeof performance.clearMarks === 'function' && typeof performance.measure === 'function' && typeof performance.clearMeasures === 'function';151  var shouldMark = function shouldMark(debugID) {152    if (!_isProfiling || !canUsePerformanceMeasure) {153      return false;154    }155    var element = ReactComponentTreeHook.getElement(debugID);156    if (element == null || typeof element !== 'object') {157      return false;158    }159    var isHostElement = typeof element.type === 'string';160    if (isHostElement) {161      return false;162    }163    return true;164  };165  var markBegin = function markBegin(debugID, markType) {166    if (!shouldMark(debugID)) {167      return;168    }169    var markName = debugID + '::' + markType;170    lastMarkTimeStamp = performanceNow();171    performance.mark(markName);172  };173  var markEnd = function markEnd(debugID, markType) {174    if (!shouldMark(debugID)) {175      return;176    }177    var markName = debugID + '::' + markType;178    var displayName = ReactComponentTreeHook.getDisplayName(debugID) || 'Unknown';179    var timeStamp = performanceNow();180    if (timeStamp - lastMarkTimeStamp > 0.1) {181      var measurementName = displayName + ' [' + markType + ']';182      performance.measure(measurementName, markName);183    }184    performance.clearMarks(markName);185    performance.clearMeasures(measurementName);186  };187  ReactDebugTool = {188    addHook: function addHook(hook) {189      hooks.push(hook);190    },191    removeHook: function removeHook(hook) {192      for (var i = 0; i < hooks.length; i++) {193        if (hooks[i] === hook) {194          hooks.splice(i, 1);195          i--;196        }197      }198    },199    isProfiling: function isProfiling() {200      return _isProfiling;201    },202    beginProfiling: function beginProfiling() {203      if (_isProfiling) {204        return;205      }206      _isProfiling = true;207      flushHistory.length = 0;208      resetMeasurements();209      ReactDebugTool.addHook(ReactHostOperationHistoryHook);210    },211    endProfiling: function endProfiling() {212      if (!_isProfiling) {213        return;214      }215      _isProfiling = false;216      resetMeasurements();217      ReactDebugTool.removeHook(ReactHostOperationHistoryHook);218    },219    getFlushHistory: function getFlushHistory() {220      return flushHistory;221    },222    onBeginFlush: function onBeginFlush() {223      currentFlushNesting++;224      resetMeasurements();225      pauseCurrentLifeCycleTimer();226      emitEvent('onBeginFlush');227    },228    onEndFlush: function onEndFlush() {229      resetMeasurements();230      currentFlushNesting--;231      resumeCurrentLifeCycleTimer();232      emitEvent('onEndFlush');233    },234    onBeginLifeCycleTimer: function onBeginLifeCycleTimer(debugID, timerType) {235      checkDebugID(debugID);236      emitEvent('onBeginLifeCycleTimer', debugID, timerType);237      markBegin(debugID, timerType);238      beginLifeCycleTimer(debugID, timerType);239    },240    onEndLifeCycleTimer: function onEndLifeCycleTimer(debugID, timerType) {241      checkDebugID(debugID);242      endLifeCycleTimer(debugID, timerType);243      markEnd(debugID, timerType);244      emitEvent('onEndLifeCycleTimer', debugID, timerType);245    },246    onBeginProcessingChildContext: function onBeginProcessingChildContext() {247      emitEvent('onBeginProcessingChildContext');248    },249    onEndProcessingChildContext: function onEndProcessingChildContext() {250      emitEvent('onEndProcessingChildContext');251    },252    onHostOperation: function onHostOperation(operation) {253      checkDebugID(operation.instanceID);254      emitEvent('onHostOperation', operation);255    },256    onSetState: function onSetState() {...106d42002a99b24f42892d550eb26157212a2cReactDebugTool.js
Source:106d42002a99b24f42892d550eb26157212a2cReactDebugTool.js  
...100    currentTimerNestedFlushDuration = 0;101    currentTimerDebugID = debugID;102    currentTimerType = timerType;103  };104  var endLifeCycleTimer = function endLifeCycleTimer(debugID, timerType) {105    if (currentFlushNesting === 0) {106      return;107    }108    if (currentTimerType !== timerType && !lifeCycleTimerHasWarned) {109      warning(false, 'There is an internal error in the React performance measurement code. ' + 'We did not expect %s timer to stop while %s timer is still in ' + 'progress for %s instance. Please report this as a bug in React.', timerType, currentTimerType || 'no', debugID === currentTimerDebugID ? 'the same' : 'another');110      lifeCycleTimerHasWarned = true;111    }112    if (_isProfiling) {113      currentFlushMeasurements.push({114        timerType: timerType,115        instanceID: debugID,116        duration: performanceNow() - currentTimerStartTime - currentTimerNestedFlushDuration117      });118    }119    currentTimerStartTime = 0;120    currentTimerNestedFlushDuration = 0;121    currentTimerDebugID = null;122    currentTimerType = null;123  };124  var pauseCurrentLifeCycleTimer = function pauseCurrentLifeCycleTimer() {125    var currentTimer = {126      startTime: currentTimerStartTime,127      nestedFlushStartTime: performanceNow(),128      debugID: currentTimerDebugID,129      timerType: currentTimerType130    };131    lifeCycleTimerStack.push(currentTimer);132    currentTimerStartTime = 0;133    currentTimerNestedFlushDuration = 0;134    currentTimerDebugID = null;135    currentTimerType = null;136  };137  var resumeCurrentLifeCycleTimer = function resumeCurrentLifeCycleTimer() {138    var _lifeCycleTimerStack$ = lifeCycleTimerStack.pop(),139        startTime = _lifeCycleTimerStack$.startTime,140        nestedFlushStartTime = _lifeCycleTimerStack$.nestedFlushStartTime,141        debugID = _lifeCycleTimerStack$.debugID,142        timerType = _lifeCycleTimerStack$.timerType;143    var nestedFlushDuration = performanceNow() - nestedFlushStartTime;144    currentTimerStartTime = startTime;145    currentTimerNestedFlushDuration += nestedFlushDuration;146    currentTimerDebugID = debugID;147    currentTimerType = timerType;148  };149  var lastMarkTimeStamp = 0;150  var canUsePerformanceMeasure = typeof performance !== 'undefined' && typeof performance.mark === 'function' && typeof performance.clearMarks === 'function' && typeof performance.measure === 'function' && typeof performance.clearMeasures === 'function';151  var shouldMark = function shouldMark(debugID) {152    if (!_isProfiling || !canUsePerformanceMeasure) {153      return false;154    }155    var element = ReactComponentTreeHook.getElement(debugID);156    if (element == null || typeof element !== 'object') {157      return false;158    }159    var isHostElement = typeof element.type === 'string';160    if (isHostElement) {161      return false;162    }163    return true;164  };165  var markBegin = function markBegin(debugID, markType) {166    if (!shouldMark(debugID)) {167      return;168    }169    var markName = debugID + '::' + markType;170    lastMarkTimeStamp = performanceNow();171    performance.mark(markName);172  };173  var markEnd = function markEnd(debugID, markType) {174    if (!shouldMark(debugID)) {175      return;176    }177    var markName = debugID + '::' + markType;178    var displayName = ReactComponentTreeHook.getDisplayName(debugID) || 'Unknown';179    var timeStamp = performanceNow();180    if (timeStamp - lastMarkTimeStamp > 0.1) {181      var measurementName = displayName + ' [' + markType + ']';182      performance.measure(measurementName, markName);183    }184    performance.clearMarks(markName);185    performance.clearMeasures(measurementName);186  };187  ReactDebugTool = {188    addHook: function addHook(hook) {189      hooks.push(hook);190    },191    removeHook: function removeHook(hook) {192      for (var i = 0; i < hooks.length; i++) {193        if (hooks[i] === hook) {194          hooks.splice(i, 1);195          i--;196        }197      }198    },199    isProfiling: function isProfiling() {200      return _isProfiling;201    },202    beginProfiling: function beginProfiling() {203      if (_isProfiling) {204        return;205      }206      _isProfiling = true;207      flushHistory.length = 0;208      resetMeasurements();209      ReactDebugTool.addHook(ReactHostOperationHistoryHook);210    },211    endProfiling: function endProfiling() {212      if (!_isProfiling) {213        return;214      }215      _isProfiling = false;216      resetMeasurements();217      ReactDebugTool.removeHook(ReactHostOperationHistoryHook);218    },219    getFlushHistory: function getFlushHistory() {220      return flushHistory;221    },222    onBeginFlush: function onBeginFlush() {223      currentFlushNesting++;224      resetMeasurements();225      pauseCurrentLifeCycleTimer();226      emitEvent('onBeginFlush');227    },228    onEndFlush: function onEndFlush() {229      resetMeasurements();230      currentFlushNesting--;231      resumeCurrentLifeCycleTimer();232      emitEvent('onEndFlush');233    },234    onBeginLifeCycleTimer: function onBeginLifeCycleTimer(debugID, timerType) {235      checkDebugID(debugID);236      emitEvent('onBeginLifeCycleTimer', debugID, timerType);237      markBegin(debugID, timerType);238      beginLifeCycleTimer(debugID, timerType);239    },240    onEndLifeCycleTimer: function onEndLifeCycleTimer(debugID, timerType) {241      checkDebugID(debugID);242      endLifeCycleTimer(debugID, timerType);243      markEnd(debugID, timerType);244      emitEvent('onEndLifeCycleTimer', debugID, timerType);245    },246    onBeginProcessingChildContext: function onBeginProcessingChildContext() {247      emitEvent('onBeginProcessingChildContext');248    },249    onEndProcessingChildContext: function onEndProcessingChildContext() {250      emitEvent('onEndProcessingChildContext');251    },252    onHostOperation: function onHostOperation(operation) {253      checkDebugID(operation.instanceID);254      emitEvent('onHostOperation', operation);255    },256    onSetState: function onSetState() {...701e31c3e90adbd4a9d1884b10bcfe55b4ff72ReactDebugTool.js
Source:701e31c3e90adbd4a9d1884b10bcfe55b4ff72ReactDebugTool.js  
...100    currentTimerNestedFlushDuration = 0;101    currentTimerDebugID = debugID;102    currentTimerType = timerType;103  };104  var endLifeCycleTimer = function endLifeCycleTimer(debugID, timerType) {105    if (currentFlushNesting === 0) {106      return;107    }108    if (currentTimerType !== timerType && !lifeCycleTimerHasWarned) {109      warning(false, 'There is an internal error in the React performance measurement code. ' + 'We did not expect %s timer to stop while %s timer is still in ' + 'progress for %s instance. Please report this as a bug in React.', timerType, currentTimerType || 'no', debugID === currentTimerDebugID ? 'the same' : 'another');110      lifeCycleTimerHasWarned = true;111    }112    if (_isProfiling) {113      currentFlushMeasurements.push({114        timerType: timerType,115        instanceID: debugID,116        duration: performanceNow() - currentTimerStartTime - currentTimerNestedFlushDuration117      });118    }119    currentTimerStartTime = 0;120    currentTimerNestedFlushDuration = 0;121    currentTimerDebugID = null;122    currentTimerType = null;123  };124  var pauseCurrentLifeCycleTimer = function pauseCurrentLifeCycleTimer() {125    var currentTimer = {126      startTime: currentTimerStartTime,127      nestedFlushStartTime: performanceNow(),128      debugID: currentTimerDebugID,129      timerType: currentTimerType130    };131    lifeCycleTimerStack.push(currentTimer);132    currentTimerStartTime = 0;133    currentTimerNestedFlushDuration = 0;134    currentTimerDebugID = null;135    currentTimerType = null;136  };137  var resumeCurrentLifeCycleTimer = function resumeCurrentLifeCycleTimer() {138    var _lifeCycleTimerStack$ = lifeCycleTimerStack.pop(),139        startTime = _lifeCycleTimerStack$.startTime,140        nestedFlushStartTime = _lifeCycleTimerStack$.nestedFlushStartTime,141        debugID = _lifeCycleTimerStack$.debugID,142        timerType = _lifeCycleTimerStack$.timerType;143    var nestedFlushDuration = performanceNow() - nestedFlushStartTime;144    currentTimerStartTime = startTime;145    currentTimerNestedFlushDuration += nestedFlushDuration;146    currentTimerDebugID = debugID;147    currentTimerType = timerType;148  };149  var lastMarkTimeStamp = 0;150  var canUsePerformanceMeasure = typeof performance !== 'undefined' && typeof performance.mark === 'function' && typeof performance.clearMarks === 'function' && typeof performance.measure === 'function' && typeof performance.clearMeasures === 'function';151  var shouldMark = function shouldMark(debugID) {152    if (!_isProfiling || !canUsePerformanceMeasure) {153      return false;154    }155    var element = ReactComponentTreeHook.getElement(debugID);156    if (element == null || typeof element !== 'object') {157      return false;158    }159    var isHostElement = typeof element.type === 'string';160    if (isHostElement) {161      return false;162    }163    return true;164  };165  var markBegin = function markBegin(debugID, markType) {166    if (!shouldMark(debugID)) {167      return;168    }169    var markName = debugID + '::' + markType;170    lastMarkTimeStamp = performanceNow();171    performance.mark(markName);172  };173  var markEnd = function markEnd(debugID, markType) {174    if (!shouldMark(debugID)) {175      return;176    }177    var markName = debugID + '::' + markType;178    var displayName = ReactComponentTreeHook.getDisplayName(debugID) || 'Unknown';179    var timeStamp = performanceNow();180    if (timeStamp - lastMarkTimeStamp > 0.1) {181      var measurementName = displayName + ' [' + markType + ']';182      performance.measure(measurementName, markName);183    }184    performance.clearMarks(markName);185    performance.clearMeasures(measurementName);186  };187  ReactDebugTool = {188    addHook: function addHook(hook) {189      hooks.push(hook);190    },191    removeHook: function removeHook(hook) {192      for (var i = 0; i < hooks.length; i++) {193        if (hooks[i] === hook) {194          hooks.splice(i, 1);195          i--;196        }197      }198    },199    isProfiling: function isProfiling() {200      return _isProfiling;201    },202    beginProfiling: function beginProfiling() {203      if (_isProfiling) {204        return;205      }206      _isProfiling = true;207      flushHistory.length = 0;208      resetMeasurements();209      ReactDebugTool.addHook(ReactHostOperationHistoryHook);210    },211    endProfiling: function endProfiling() {212      if (!_isProfiling) {213        return;214      }215      _isProfiling = false;216      resetMeasurements();217      ReactDebugTool.removeHook(ReactHostOperationHistoryHook);218    },219    getFlushHistory: function getFlushHistory() {220      return flushHistory;221    },222    onBeginFlush: function onBeginFlush() {223      currentFlushNesting++;224      resetMeasurements();225      pauseCurrentLifeCycleTimer();226      emitEvent('onBeginFlush');227    },228    onEndFlush: function onEndFlush() {229      resetMeasurements();230      currentFlushNesting--;231      resumeCurrentLifeCycleTimer();232      emitEvent('onEndFlush');233    },234    onBeginLifeCycleTimer: function onBeginLifeCycleTimer(debugID, timerType) {235      checkDebugID(debugID);236      emitEvent('onBeginLifeCycleTimer', debugID, timerType);237      markBegin(debugID, timerType);238      beginLifeCycleTimer(debugID, timerType);239    },240    onEndLifeCycleTimer: function onEndLifeCycleTimer(debugID, timerType) {241      checkDebugID(debugID);242      endLifeCycleTimer(debugID, timerType);243      markEnd(debugID, timerType);244      emitEvent('onEndLifeCycleTimer', debugID, timerType);245    },246    onBeginProcessingChildContext: function onBeginProcessingChildContext() {247      emitEvent('onBeginProcessingChildContext');248    },249    onEndProcessingChildContext: function onEndProcessingChildContext() {250      emitEvent('onEndProcessingChildContext');251    },252    onHostOperation: function onHostOperation(operation) {253      checkDebugID(operation.instanceID);254      emitEvent('onHostOperation', operation);255    },256    onSetState: function onSetState() {...1b7731bcb216f3ddb5d71e317c587cfa499da9ReactDebugTool.js
Source:1b7731bcb216f3ddb5d71e317c587cfa499da9ReactDebugTool.js  
...100    currentTimerNestedFlushDuration = 0;101    currentTimerDebugID = debugID;102    currentTimerType = timerType;103  };104  var endLifeCycleTimer = function endLifeCycleTimer(debugID, timerType) {105    if (currentFlushNesting === 0) {106      return;107    }108    if (currentTimerType !== timerType && !lifeCycleTimerHasWarned) {109      warning(false, 'There is an internal error in the React performance measurement code. ' + 'We did not expect %s timer to stop while %s timer is still in ' + 'progress for %s instance. Please report this as a bug in React.', timerType, currentTimerType || 'no', debugID === currentTimerDebugID ? 'the same' : 'another');110      lifeCycleTimerHasWarned = true;111    }112    if (_isProfiling) {113      currentFlushMeasurements.push({114        timerType: timerType,115        instanceID: debugID,116        duration: performanceNow() - currentTimerStartTime - currentTimerNestedFlushDuration117      });118    }119    currentTimerStartTime = 0;120    currentTimerNestedFlushDuration = 0;121    currentTimerDebugID = null;122    currentTimerType = null;123  };124  var pauseCurrentLifeCycleTimer = function pauseCurrentLifeCycleTimer() {125    var currentTimer = {126      startTime: currentTimerStartTime,127      nestedFlushStartTime: performanceNow(),128      debugID: currentTimerDebugID,129      timerType: currentTimerType130    };131    lifeCycleTimerStack.push(currentTimer);132    currentTimerStartTime = 0;133    currentTimerNestedFlushDuration = 0;134    currentTimerDebugID = null;135    currentTimerType = null;136  };137  var resumeCurrentLifeCycleTimer = function resumeCurrentLifeCycleTimer() {138    var _lifeCycleTimerStack$ = lifeCycleTimerStack.pop(),139        startTime = _lifeCycleTimerStack$.startTime,140        nestedFlushStartTime = _lifeCycleTimerStack$.nestedFlushStartTime,141        debugID = _lifeCycleTimerStack$.debugID,142        timerType = _lifeCycleTimerStack$.timerType;143    var nestedFlushDuration = performanceNow() - nestedFlushStartTime;144    currentTimerStartTime = startTime;145    currentTimerNestedFlushDuration += nestedFlushDuration;146    currentTimerDebugID = debugID;147    currentTimerType = timerType;148  };149  var lastMarkTimeStamp = 0;150  var canUsePerformanceMeasure = typeof performance !== 'undefined' && typeof performance.mark === 'function' && typeof performance.clearMarks === 'function' && typeof performance.measure === 'function' && typeof performance.clearMeasures === 'function';151  var shouldMark = function shouldMark(debugID) {152    if (!_isProfiling || !canUsePerformanceMeasure) {153      return false;154    }155    var element = ReactComponentTreeHook.getElement(debugID);156    if (element == null || typeof element !== 'object') {157      return false;158    }159    var isHostElement = typeof element.type === 'string';160    if (isHostElement) {161      return false;162    }163    return true;164  };165  var markBegin = function markBegin(debugID, markType) {166    if (!shouldMark(debugID)) {167      return;168    }169    var markName = debugID + '::' + markType;170    lastMarkTimeStamp = performanceNow();171    performance.mark(markName);172  };173  var markEnd = function markEnd(debugID, markType) {174    if (!shouldMark(debugID)) {175      return;176    }177    var markName = debugID + '::' + markType;178    var displayName = ReactComponentTreeHook.getDisplayName(debugID) || 'Unknown';179    var timeStamp = performanceNow();180    if (timeStamp - lastMarkTimeStamp > 0.1) {181      var measurementName = displayName + ' [' + markType + ']';182      performance.measure(measurementName, markName);183    }184    performance.clearMarks(markName);185    performance.clearMeasures(measurementName);186  };187  ReactDebugTool = {188    addHook: function addHook(hook) {189      hooks.push(hook);190    },191    removeHook: function removeHook(hook) {192      for (var i = 0; i < hooks.length; i++) {193        if (hooks[i] === hook) {194          hooks.splice(i, 1);195          i--;196        }197      }198    },199    isProfiling: function isProfiling() {200      return _isProfiling;201    },202    beginProfiling: function beginProfiling() {203      if (_isProfiling) {204        return;205      }206      _isProfiling = true;207      flushHistory.length = 0;208      resetMeasurements();209      ReactDebugTool.addHook(ReactHostOperationHistoryHook);210    },211    endProfiling: function endProfiling() {212      if (!_isProfiling) {213        return;214      }215      _isProfiling = false;216      resetMeasurements();217      ReactDebugTool.removeHook(ReactHostOperationHistoryHook);218    },219    getFlushHistory: function getFlushHistory() {220      return flushHistory;221    },222    onBeginFlush: function onBeginFlush() {223      currentFlushNesting++;224      resetMeasurements();225      pauseCurrentLifeCycleTimer();226      emitEvent('onBeginFlush');227    },228    onEndFlush: function onEndFlush() {229      resetMeasurements();230      currentFlushNesting--;231      resumeCurrentLifeCycleTimer();232      emitEvent('onEndFlush');233    },234    onBeginLifeCycleTimer: function onBeginLifeCycleTimer(debugID, timerType) {235      checkDebugID(debugID);236      emitEvent('onBeginLifeCycleTimer', debugID, timerType);237      markBegin(debugID, timerType);238      beginLifeCycleTimer(debugID, timerType);239    },240    onEndLifeCycleTimer: function onEndLifeCycleTimer(debugID, timerType) {241      checkDebugID(debugID);242      endLifeCycleTimer(debugID, timerType);243      markEnd(debugID, timerType);244      emitEvent('onEndLifeCycleTimer', debugID, timerType);245    },246    onBeginProcessingChildContext: function onBeginProcessingChildContext() {247      emitEvent('onBeginProcessingChildContext');248    },249    onEndProcessingChildContext: function onEndProcessingChildContext() {250      emitEvent('onEndProcessingChildContext');251    },252    onHostOperation: function onHostOperation(operation) {253      checkDebugID(operation.instanceID);254      emitEvent('onHostOperation', operation);255    },256    onSetState: function onSetState() {...ReactDebugTool.js
Source:ReactDebugTool.js  
...85    currentTimerNestedFlushDuration = 0;86    currentTimerDebugID = debugID;87    currentTimerType = timerType;88  }89  function endLifeCycleTimer(debugID, timerType) {90    if (currentFlushNesting === 0) {91      return;92    }93    process.env.NODE_ENV !== 'production' ? warning(currentTimerType === timerType, 'There is an internal error in the React performance measurement code. ' + 'We did not expect %s timer to stop while %s timer is still in ' + 'progress for %s instance. Please report this as a bug in React.', timerType, currentTimerType || 'no', debugID === currentTimerDebugID ? 'the same' : 'another') : void 0;94    if (isProfiling) {95      currentFlushMeasurements.push({96        timerType: timerType,97        instanceID: debugID,98        duration: performanceNow() - currentTimerStartTime - currentTimerNestedFlushDuration99      });100    }101    currentTimerStartTime = null;102    currentTimerNestedFlushDuration = null;103    currentTimerDebugID = null;104    currentTimerType = null;105  }106  function pauseCurrentLifeCycleTimer() {107    var currentTimer = {108      startTime: currentTimerStartTime,109      nestedFlushStartTime: performanceNow(),110      debugID: currentTimerDebugID,111      timerType: currentTimerType112    };113    lifeCycleTimerStack.push(currentTimer);114    currentTimerStartTime = null;115    currentTimerNestedFlushDuration = null;116    currentTimerDebugID = null;117    currentTimerType = null;118  }119  function resumeCurrentLifeCycleTimer() {120    var _lifeCycleTimerStack$ = lifeCycleTimerStack.pop();121    var startTime = _lifeCycleTimerStack$.startTime;122    var nestedFlushStartTime = _lifeCycleTimerStack$.nestedFlushStartTime;123    var debugID = _lifeCycleTimerStack$.debugID;124    var timerType = _lifeCycleTimerStack$.timerType;125    var nestedFlushDuration = performanceNow() - nestedFlushStartTime;126    currentTimerStartTime = startTime;127    currentTimerNestedFlushDuration += nestedFlushDuration;128    currentTimerDebugID = debugID;129    currentTimerType = timerType;130  }131  var ReactDebugTool = {132    addDevtool: function(devtool) {133      eventHandlers.push(devtool);134    },135    removeDevtool: function(devtool) {136      for (var i = 0; i < eventHandlers.length; i++) {137        if (eventHandlers[i] === devtool) {138          eventHandlers.splice(i, 1);139          i--;140        }141      }142    },143    isProfiling: function() {144      return isProfiling;145    },146    beginProfiling: function() {147      if (isProfiling) {148        return;149      }150      isProfiling = true;151      flushHistory.length = 0;152      resetMeasurements();153      ReactDebugTool.addDevtool(ReactHostOperationHistoryDevtool);154    },155    endProfiling: function() {156      if (!isProfiling) {157        return;158      }159      isProfiling = false;160      resetMeasurements();161      ReactDebugTool.removeDevtool(ReactHostOperationHistoryDevtool);162    },163    getFlushHistory: function() {164      return flushHistory;165    },166    onBeginFlush: function() {167      currentFlushNesting++;168      resetMeasurements();169      pauseCurrentLifeCycleTimer();170      emitEvent('onBeginFlush');171    },172    onEndFlush: function() {173      resetMeasurements();174      currentFlushNesting--;175      resumeCurrentLifeCycleTimer();176      emitEvent('onEndFlush');177    },178    onBeginLifeCycleTimer: function(debugID, timerType) {179      checkDebugID(debugID);180      emitEvent('onBeginLifeCycleTimer', debugID, timerType);181      beginLifeCycleTimer(debugID, timerType);182    },183    onEndLifeCycleTimer: function(debugID, timerType) {184      checkDebugID(debugID);185      endLifeCycleTimer(debugID, timerType);186      emitEvent('onEndLifeCycleTimer', debugID, timerType);187    },188    onBeginReconcilerTimer: function(debugID, timerType) {189      checkDebugID(debugID);190      emitEvent('onBeginReconcilerTimer', debugID, timerType);191    },192    onEndReconcilerTimer: function(debugID, timerType) {193      checkDebugID(debugID);194      emitEvent('onEndReconcilerTimer', debugID, timerType);195    },196    onError: function(debugID) {197      if (currentTimerDebugID != null) {198        endLifeCycleTimer(currentTimerDebugID, currentTimerType);199      }200      emitEvent('onError', debugID);201    },202    onBeginProcessingChildContext: function() {203      emitEvent('onBeginProcessingChildContext');204    },205    onEndProcessingChildContext: function() {206      emitEvent('onEndProcessingChildContext');207    },208    onHostOperation: function(debugID, type, payload) {209      checkDebugID(debugID);210      emitEvent('onHostOperation', debugID, type, payload);211    },212    onSetState: function() {...Using AI Code Generation
1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.endLifeCycleTimer('myCustomTimer');7  await browser.close();8})();9{10    {11    }12}Using AI Code Generation
1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.endLifeCycleTimer('test');7  await browser.close();8})();9{10}Using AI Code Generation
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.endLifeCycleTimer('test');7    await browser.close();8})();9const { chromium } = require('playwright');10(async () => {11    const browser = await chromium.launch();12    const context = await browser.newContext();13    const page = await context.newPage();14    await page.endLifeCycleTimer('test');15    await browser.close();16})();17const { chromium } = require('playwright');18(async () => {19    const browser = await chromium.launch();20    const context = await browser.newContext();21    const page = await context.newPage();22    await page.endLifeCycleTimer('test');23    await browser.close();24})();25const { chromium } = require('playwright');26(async () => {27    const browser = await chromium.launch();28    const context = await browser.newContext();29    const page = await context.newPage();30    await page.endLifeCycleTimer('test');31    await browser.close();32})();33const { chromium } = require('playwright');34(async () => {35    const browser = await chromium.launch();36    const context = await browser.newContext();37    const page = await context.newPage();38    await page.endLifeCycleTimer('test');39    await browser.close();40})();41const { chromium } = require('playwright');42(async () => {43    const browser = await chromium.launch();44    const context = await browser.newContext();45    const page = await context.newPage();Using AI Code Generation
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: 'example.png'});7  await browser.close();8})();Using AI Code Generation
1const {chromium, firefox, webkit} = require('playwright');2const browser = await chromium.launch();3const context = await browser.newContext();4const page = await context.newPage();5await page.endLifeCycleTimer();6await browser.close();7const {chromium, firefox, webkit} = require('playwright');8const browser = await chromium.launch();9const context = await browser.newContext();10const page = await context.newPage();11await page.endLifeCycleTimer();12await browser.close();13const {chromium, firefox, webkit} = require('playwright');14const browser = await chromium.launch();15const context = await browser.newContext();16const page = await context.newPage();17await page.endLifeCycleTimer();18await browser.close();19const {chromium, firefox, webkit} = require('playwright');20const browser = await chromium.launch();21const context = await browser.newContext();22const page = await context.newPage();23await page.endLifeCycleTimer();24await browser.close();25const {chromium, firefox, webkit} = require('playwright');26const browser = await chromium.launch();27const context = await browser.newContext();28const page = await context.newPage();29await page.endLifeCycleTimer();30await browser.close();31const {chromium, firefox, webkit} = require('playwright');Using AI Code Generation
1const { endLifeCycleTimer } = require('playwright/lib/internal/recorder/recorderApp');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  await page.click('text=Get started');8  await page.click('text=Docs');9  await page.click('text=API');10  await page.click('text=BrowserContext');11  await page.click('text=BrowserContextUsing AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({headless: false});4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.endLifeCycleTimer({name: 'google'})7  await browser.close();8})();9First Contentful Paint (FCP)10First Meaningful Paint (FMP)11First CPU Idle (FCI)12Time to Interactive (TTI)13First Input Delay (FID)Using AI Code Generation
1const { chromium } = require('playwright');2const { endLifeCycleTimer } = require('playwright/lib/server/supplements/recorder/recorderSupplement');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const metrics = endLifeCycleTimer('page', page);8  console.log(metrics);9  await browser.close();10})();11const { chromium } = require('playwright');12const { endLifeCycleTimer } = require('playwright/lib/server/supplements/recorder/recorderSupplement');13(async () => {14  const browser = await chromium.launch();15  const context = await browser.newContext();16  const page = await context.newPage();17  const metrics = endLifeCycleTimer('context', context);18  console.log(metrics);19  await browser.close();20})();21{ 'page-load': 3.071, 'page-load-network': 0.002, 'page-load-ssr': 0.002 }22{ 'page-load': 3.071, 'page-load-network': 0.002, 'page-load-ssr': 0.002, 'context-load': 3.071, 'context-load-network': 0.002, 'context-load-ssr': 0.002 }23{ 'page-load': 3.071, 'page-load-network': 0.002, 'page-load-ssr': 0.002, 'context-load': 3.071, 'context-load-network': 0.002, 'context-load-ssr': 0.002, 'browser-load': 3.071, 'browser-load-network': 0.002, 'browser-load-ssr': 0.002 }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.
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