How to use getWasted method in Playwright Internal

Best JavaScript code snippet using playwright-internal

b86761ReactPerf.js

Source:b86761ReactPerf.js

...149  }).sort(function (a, b) {150    return b.inclusiveRenderDuration - a.inclusiveRenderDuration;151  });152}153function getWasted() {154  var flushHistory = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getLastMeasurements();155  if (!__DEV__) {156    warnInProduction();157    return [];158  }159  var aggregatedStats = {};160  var affectedIDs = {};161  function updateAggregatedStats(treeSnapshot, instanceID, applyUpdate) {162    var _treeSnapshot$instanc2 = treeSnapshot[instanceID],163        displayName = _treeSnapshot$instanc2.displayName,164        ownerID = _treeSnapshot$instanc2.ownerID;165    var owner = treeSnapshot[ownerID];166    var key = (owner ? owner.displayName + ' > ' : '') + displayName;167    var stats = aggregatedStats[key];168    if (!stats) {169      affectedIDs[key] = {};170      stats = aggregatedStats[key] = {171        key: key,172        instanceCount: 0,173        inclusiveRenderDuration: 0,174        renderCount: 0175      };176    }177    affectedIDs[key][instanceID] = true;178    applyUpdate(stats);179  }180  flushHistory.forEach(function (flush) {181    var measurements = flush.measurements,182        treeSnapshot = flush.treeSnapshot,183        operations = flush.operations;184    var isDefinitelyNotWastedByID = {};185    operations.forEach(function (operation) {186      var instanceID = operation.instanceID;187      var nextParentID = instanceID;188      while (nextParentID) {189        isDefinitelyNotWastedByID[nextParentID] = true;190        nextParentID = treeSnapshot[nextParentID].parentID;191      }192    });193    var renderedCompositeIDs = {};194    measurements.forEach(function (measurement) {195      var instanceID = measurement.instanceID,196          timerType = measurement.timerType;197      if (timerType !== 'render') {198        return;199      }200      renderedCompositeIDs[instanceID] = true;201    });202    measurements.forEach(function (measurement) {203      var duration = measurement.duration,204          instanceID = measurement.instanceID,205          timerType = measurement.timerType;206      if (timerType !== 'render') {207        return;208      }209      var updateCount = treeSnapshot[instanceID].updateCount;210      if (isDefinitelyNotWastedByID[instanceID] || updateCount === 0) {211        return;212      }213      updateAggregatedStats(treeSnapshot, instanceID, function (stats) {214        stats.renderCount++;215      });216      var nextParentID = instanceID;217      while (nextParentID) {218        var isWasted = renderedCompositeIDs[nextParentID] && !isDefinitelyNotWastedByID[nextParentID];219        if (isWasted) {220          updateAggregatedStats(treeSnapshot, nextParentID, function (stats) {221            stats.inclusiveRenderDuration += duration;222          });223        }224        nextParentID = treeSnapshot[nextParentID].parentID;225      }226    });227  });228  return Object.keys(aggregatedStats).map(function (key) {229    return babelHelpers.extends({}, aggregatedStats[key], {230      instanceCount: Object.keys(affectedIDs[key]).length231    });232  }).sort(function (a, b) {233    return b.inclusiveRenderDuration - a.inclusiveRenderDuration;234  });235}236function getOperations() {237  var flushHistory = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getLastMeasurements();238  if (!__DEV__) {239    warnInProduction();240    return [];241  }242  var stats = [];243  flushHistory.forEach(function (flush, flushIndex) {244    var operations = flush.operations,245        treeSnapshot = flush.treeSnapshot;246    operations.forEach(function (operation) {247      var instanceID = operation.instanceID,248          type = operation.type,249          payload = operation.payload;250      var _treeSnapshot$instanc3 = treeSnapshot[instanceID],251          displayName = _treeSnapshot$instanc3.displayName,252          ownerID = _treeSnapshot$instanc3.ownerID;253      var owner = treeSnapshot[ownerID];254      var key = (owner ? owner.displayName + ' > ' : '') + displayName;255      stats.push({256        flushIndex: flushIndex,257        instanceID: instanceID,258        key: key,259        type: type,260        ownerID: ownerID,261        payload: payload262      });263    });264  });265  return stats;266}267function printExclusive(flushHistory) {268  if (!__DEV__) {269    warnInProduction();270    return;271  }272  var stats = getExclusive(flushHistory);273  var table = stats.map(function (item) {274    var key = item.key,275        instanceCount = item.instanceCount,276        totalDuration = item.totalDuration;277    var renderCount = item.counts.render || 0;278    var renderDuration = item.durations.render || 0;279    return {280      'Component': key,281      'Total time (ms)': roundFloat(totalDuration),282      'Instance count': instanceCount,283      'Total render time (ms)': roundFloat(renderDuration),284      'Average render time (ms)': renderCount ? roundFloat(renderDuration / renderCount) : undefined,285      'Render count': renderCount,286      'Total lifecycle time (ms)': roundFloat(totalDuration - renderDuration)287    };288  });289  consoleTable(table);290}291function printInclusive(flushHistory) {292  if (!__DEV__) {293    warnInProduction();294    return;295  }296  var stats = getInclusive(flushHistory);297  var table = stats.map(function (item) {298    var key = item.key,299        instanceCount = item.instanceCount,300        inclusiveRenderDuration = item.inclusiveRenderDuration,301        renderCount = item.renderCount;302    return {303      'Owner > Component': key,304      'Inclusive render time (ms)': roundFloat(inclusiveRenderDuration),305      'Instance count': instanceCount,306      'Render count': renderCount307    };308  });309  consoleTable(table);310}311function printWasted(flushHistory) {312  if (!__DEV__) {313    warnInProduction();314    return;315  }316  var stats = getWasted(flushHistory);317  var table = stats.map(function (item) {318    var key = item.key,319        instanceCount = item.instanceCount,320        inclusiveRenderDuration = item.inclusiveRenderDuration,321        renderCount = item.renderCount;322    return {323      'Owner > Component': key,324      'Inclusive wasted time (ms)': roundFloat(inclusiveRenderDuration),325      'Instance count': instanceCount,326      'Render count': renderCount327    };328  });329  consoleTable(table);330}331function printOperations(flushHistory) {332  if (!__DEV__) {333    warnInProduction();334    return;335  }336  var stats = getOperations(flushHistory);337  var table = stats.map(function (stat) {338    return {339      'Owner > Node': stat.key,340      'Operation': stat.type,341      'Payload': typeof stat.payload === 'object' ? JSON.stringify(stat.payload) : stat.payload,342      'Flush index': stat.flushIndex,343      'Owner Component ID': stat.ownerID,344      'DOM Component ID': stat.instanceID345    };346  });347  consoleTable(table);348}349var warnedAboutPrintDOM = false;350function printDOM(measurements) {351  warning(warnedAboutPrintDOM, '`ReactPerf.printDOM(...)` is deprecated. Use ' + '`ReactPerf.printOperations(...)` instead.');352  warnedAboutPrintDOM = true;353  return printOperations(measurements);354}355var warnedAboutGetMeasurementsSummaryMap = false;356function getMeasurementsSummaryMap(measurements) {357  warning(warnedAboutGetMeasurementsSummaryMap, '`ReactPerf.getMeasurementsSummaryMap(...)` is deprecated. Use ' + '`ReactPerf.getWasted(...)` instead.');358  warnedAboutGetMeasurementsSummaryMap = true;359  return getWasted(measurements);360}361function start() {362  if (!__DEV__) {363    warnInProduction();364    return;365  }366  ReactDebugTool.beginProfiling();367}368function stop() {369  if (!__DEV__) {370    warnInProduction();371    return;372  }373  ReactDebugTool.endProfiling();...

ReactPerf.js

Source:ReactPerf.js

...134    }).sort(function(a, b) {135      return b.inclusiveRenderDuration - a.inclusiveRenderDuration;136    });137  }138  function getWasted() {139    var flushHistory = arguments.length <= 0 || arguments[0] === undefined ? getFlushHistory() : arguments[0];140    var aggregatedStats = {};141    var affectedIDs = {};142    function updateAggregatedStats(treeSnapshot, instanceID, applyUpdate) {143      var _treeSnapshot$instanc2 = treeSnapshot[instanceID];144      var displayName = _treeSnapshot$instanc2.displayName;145      var ownerID = _treeSnapshot$instanc2.ownerID;146      var owner = treeSnapshot[ownerID];147      var key = (owner ? owner.displayName + ' > ' : '') + displayName;148      var stats = aggregatedStats[key];149      if (!stats) {150        affectedIDs[key] = {};151        stats = aggregatedStats[key] = {152          key: key,153          instanceCount: 0,154          inclusiveRenderDuration: 0,155          renderCount: 0156        };157      }158      affectedIDs[key][instanceID] = true;159      applyUpdate(stats);160    }161    flushHistory.forEach(function(flush) {162      var measurements = flush.measurements;163      var treeSnapshot = flush.treeSnapshot;164      var operations = flush.operations;165      var isDefinitelyNotWastedByID = {};166      operations.forEach(function(operation) {167        var instanceID = operation.instanceID;168        var nextParentID = instanceID;169        while (nextParentID) {170          isDefinitelyNotWastedByID[nextParentID] = true;171          nextParentID = treeSnapshot[nextParentID].parentID;172        }173      });174      var renderedCompositeIDs = {};175      measurements.forEach(function(measurement) {176        var instanceID = measurement.instanceID;177        var timerType = measurement.timerType;178        if (timerType !== 'render') {179          return;180        }181        renderedCompositeIDs[instanceID] = true;182      });183      measurements.forEach(function(measurement) {184        var duration = measurement.duration;185        var instanceID = measurement.instanceID;186        var timerType = measurement.timerType;187        if (timerType !== 'render') {188          return;189        }190        var updateCount = treeSnapshot[instanceID].updateCount;191        if (isDefinitelyNotWastedByID[instanceID] || updateCount === 0) {192          return;193        }194        updateAggregatedStats(treeSnapshot, instanceID, function(stats) {195          stats.renderCount++;196        });197        var nextParentID = instanceID;198        while (nextParentID) {199          var isWasted = renderedCompositeIDs[nextParentID] && !isDefinitelyNotWastedByID[nextParentID];200          if (isWasted) {201            updateAggregatedStats(treeSnapshot, nextParentID, function(stats) {202              stats.inclusiveRenderDuration += duration;203            });204          }205          nextParentID = treeSnapshot[nextParentID].parentID;206        }207      });208    });209    return Object.keys(aggregatedStats).map(function(key) {210      return _extends({}, aggregatedStats[key], {instanceCount: Object.keys(affectedIDs[key]).length});211    }).sort(function(a, b) {212      return b.inclusiveRenderDuration - a.inclusiveRenderDuration;213    });214  }215  function getOperations() {216    var flushHistory = arguments.length <= 0 || arguments[0] === undefined ? getFlushHistory() : arguments[0];217    var stats = [];218    flushHistory.forEach(function(flush, flushIndex) {219      var operations = flush.operations;220      var treeSnapshot = flush.treeSnapshot;221      operations.forEach(function(operation) {222        var instanceID = operation.instanceID;223        var type = operation.type;224        var payload = operation.payload;225        var _treeSnapshot$instanc3 = treeSnapshot[instanceID];226        var displayName = _treeSnapshot$instanc3.displayName;227        var ownerID = _treeSnapshot$instanc3.ownerID;228        var owner = treeSnapshot[ownerID];229        var key = (owner ? owner.displayName + ' > ' : '') + displayName;230        stats.push({231          flushIndex: flushIndex,232          instanceID: instanceID,233          key: key,234          type: type,235          ownerID: ownerID,236          payload: payload237        });238      });239    });240    return stats;241  }242  function printExclusive(flushHistory) {243    var stats = getExclusive(flushHistory);244    var table = stats.map(function(item) {245      var key = item.key;246      var instanceCount = item.instanceCount;247      var totalDuration = item.totalDuration;248      var renderCount = item.counts.render || 0;249      var renderDuration = item.durations.render || 0;250      return {251        'Component': key,252        'Total time (ms)': roundFloat(totalDuration),253        'Instance count': instanceCount,254        'Total render time (ms)': roundFloat(renderDuration),255        'Average render time (ms)': renderCount ? roundFloat(renderDuration / renderCount) : undefined,256        'Render count': renderCount,257        'Total lifecycle time (ms)': roundFloat(totalDuration - renderDuration)258      };259    });260    console.table(table);261  }262  function printInclusive(flushHistory) {263    var stats = getInclusive(flushHistory);264    var table = stats.map(function(item) {265      var key = item.key;266      var instanceCount = item.instanceCount;267      var inclusiveRenderDuration = item.inclusiveRenderDuration;268      var renderCount = item.renderCount;269      return {270        'Owner > Component': key,271        'Inclusive render time (ms)': roundFloat(inclusiveRenderDuration),272        'Instance count': instanceCount,273        'Render count': renderCount274      };275    });276    console.table(table);277  }278  function printWasted(flushHistory) {279    var stats = getWasted(flushHistory);280    var table = stats.map(function(item) {281      var key = item.key;282      var instanceCount = item.instanceCount;283      var inclusiveRenderDuration = item.inclusiveRenderDuration;284      var renderCount = item.renderCount;285      return {286        'Owner > Component': key,287        'Inclusive wasted time (ms)': roundFloat(inclusiveRenderDuration),288        'Instance count': instanceCount,289        'Render count': renderCount290      };291    });292    console.table(table);293  }294  function printOperations(flushHistory) {295    var stats = getOperations(flushHistory);296    var table = stats.map(function(stat) {297      return {298        'Owner > Node': stat.key,299        'Operation': stat.type,300        'Payload': typeof stat.payload === 'object' ? JSON.stringify(stat.payload) : stat.payload,301        'Flush index': stat.flushIndex,302        'Owner Component ID': stat.ownerID,303        'DOM Component ID': stat.instanceID304      };305    });306    console.table(table);307  }308  var warnedAboutPrintDOM = false;309  function printDOM(measurements) {310    process.env.NODE_ENV !== 'production' ? warning(warnedAboutPrintDOM, '`ReactPerf.printDOM(...)` is deprecated. Use ' + '`ReactPerf.printOperations(...)` instead.') : void 0;311    warnedAboutPrintDOM = true;312    return printOperations(measurements);313  }314  var warnedAboutGetMeasurementsSummaryMap = false;315  function getMeasurementsSummaryMap(measurements) {316    process.env.NODE_ENV !== 'production' ? warning(warnedAboutGetMeasurementsSummaryMap, '`ReactPerf.getMeasurementsSummaryMap(...)` is deprecated. Use ' + '`ReactPerf.getWasted(...)` instead.') : void 0;317    warnedAboutGetMeasurementsSummaryMap = true;318    return getWasted(measurements);319  }320  function start() {321    ReactDebugTool.beginProfiling();322  }323  function stop() {324    ReactDebugTool.endProfiling();325  }326  var ReactPerfAnalysis = {327    getLastMeasurements: getFlushHistory,328    getExclusive: getExclusive,329    getInclusive: getInclusive,330    getWasted: getWasted,331    getOperations: getOperations,332    printExclusive: printExclusive,...

fa18fcReactPerf.js

Source:fa18fcReactPerf.js

...135instanceCount:Object.keys(affectedIDs[key]).length});}).136sort(function(a,b){return(137b.inclusiveRenderDuration-a.inclusiveRenderDuration);});138}139function getWasted(){var flushHistory=arguments.length>0&&arguments[0]!==undefined?arguments[0]:getLastMeasurements();140if(!__DEV__){141warnInProduction();142return[];143}144var aggregatedStats={};145var affectedIDs={};146function updateAggregatedStats(treeSnapshot,instanceID,applyUpdate){var _treeSnapshot$instanc2=147treeSnapshot[instanceID],displayName=_treeSnapshot$instanc2.displayName,ownerID=_treeSnapshot$instanc2.ownerID;148var owner=treeSnapshot[ownerID];149var key=(owner?owner.displayName+' > ':'')+displayName;150var stats=aggregatedStats[key];151if(!stats){152affectedIDs[key]={};153stats=aggregatedStats[key]={154key:key,155instanceCount:0,156inclusiveRenderDuration:0,157renderCount:0};158}159affectedIDs[key][instanceID]=true;160applyUpdate(stats);161}162flushHistory.forEach(function(flush){var163measurements=flush.measurements,treeSnapshot=flush.treeSnapshot,operations=flush.operations;164var isDefinitelyNotWastedByID={};165operations.forEach(function(operation){var166instanceID=operation.instanceID;167var nextParentID=instanceID;168while(nextParentID){169isDefinitelyNotWastedByID[nextParentID]=true;170nextParentID=treeSnapshot[nextParentID].parentID;171}172});173var renderedCompositeIDs={};174measurements.forEach(function(measurement){var175instanceID=measurement.instanceID,timerType=measurement.timerType;176if(timerType!=='render'){177return;178}179renderedCompositeIDs[instanceID]=true;180});181measurements.forEach(function(measurement){var182duration=measurement.duration,instanceID=measurement.instanceID,timerType=measurement.timerType;183if(timerType!=='render'){184return;185}var186updateCount=treeSnapshot[instanceID].updateCount;187if(isDefinitelyNotWastedByID[instanceID]||updateCount===0){188return;189}190updateAggregatedStats(treeSnapshot,instanceID,function(stats){191stats.renderCount++;192});193var nextParentID=instanceID;194while(nextParentID){195var isWasted=196renderedCompositeIDs[nextParentID]&&197!isDefinitelyNotWastedByID[nextParentID];198if(isWasted){199updateAggregatedStats(treeSnapshot,nextParentID,function(stats){200stats.inclusiveRenderDuration+=duration;201});202}203nextParentID=treeSnapshot[nextParentID].parentID;204}205});206});207return Object.keys(aggregatedStats).208map(function(key){return _extends({},209aggregatedStats[key],{210instanceCount:Object.keys(affectedIDs[key]).length});}).211sort(function(a,b){return(212b.inclusiveRenderDuration-a.inclusiveRenderDuration);});213}214function getOperations(){var flushHistory=arguments.length>0&&arguments[0]!==undefined?arguments[0]:getLastMeasurements();215if(!__DEV__){216warnInProduction();217return[];218}219var stats=[];220flushHistory.forEach(function(flush,flushIndex){var221operations=flush.operations,treeSnapshot=flush.treeSnapshot;222operations.forEach(function(operation){var223instanceID=operation.instanceID,type=operation.type,payload=operation.payload;var _treeSnapshot$instanc3=224treeSnapshot[instanceID],displayName=_treeSnapshot$instanc3.displayName,ownerID=_treeSnapshot$instanc3.ownerID;225var owner=treeSnapshot[ownerID];226var key=(owner?owner.displayName+' > ':'')+displayName;227stats.push({228flushIndex:flushIndex,229instanceID:instanceID,230key:key,231type:type,232ownerID:ownerID,233payload:payload});234});235});236return stats;237}238function printExclusive(flushHistory){239if(!__DEV__){240warnInProduction();241return;242}243var stats=getExclusive(flushHistory);244var table=stats.map(function(item){var245key=item.key,instanceCount=item.instanceCount,totalDuration=item.totalDuration;246var renderCount=item.counts.render||0;247var renderDuration=item.durations.render||0;248return{249'Component':key,250'Total time (ms)':roundFloat(totalDuration),251'Instance count':instanceCount,252'Total render time (ms)':roundFloat(renderDuration),253'Average render time (ms)':renderCount?254roundFloat(renderDuration/renderCount):255undefined,256'Render count':renderCount,257'Total lifecycle time (ms)':roundFloat(totalDuration-renderDuration)};258});259consoleTable(table);260}261function printInclusive(flushHistory){262if(!__DEV__){263warnInProduction();264return;265}266var stats=getInclusive(flushHistory);267var table=stats.map(function(item){var268key=item.key,instanceCount=item.instanceCount,inclusiveRenderDuration=item.inclusiveRenderDuration,renderCount=item.renderCount;269return{270'Owner > Component':key,271'Inclusive render time (ms)':roundFloat(inclusiveRenderDuration),272'Instance count':instanceCount,273'Render count':renderCount};274});275consoleTable(table);276}277function printWasted(flushHistory){278if(!__DEV__){279warnInProduction();280return;281}282var stats=getWasted(flushHistory);283var table=stats.map(function(item){var284key=item.key,instanceCount=item.instanceCount,inclusiveRenderDuration=item.inclusiveRenderDuration,renderCount=item.renderCount;285return{286'Owner > Component':key,287'Inclusive wasted time (ms)':roundFloat(inclusiveRenderDuration),288'Instance count':instanceCount,289'Render count':renderCount};290});291consoleTable(table);292}293function printOperations(flushHistory){294if(!__DEV__){295warnInProduction();296return;297}298var stats=getOperations(flushHistory);299var table=stats.map(function(stat){return{300'Owner > Node':stat.key,301'Operation':stat.type,302'Payload':typeof stat.payload==='object'?303JSON.stringify(stat.payload):304stat.payload,305'Flush index':stat.flushIndex,306'Owner Component ID':stat.ownerID,307'DOM Component ID':stat.instanceID};});308consoleTable(table);309}310var warnedAboutPrintDOM=false;311function printDOM(measurements){312warning(313warnedAboutPrintDOM,314'`ReactPerf.printDOM(...)` is deprecated. Use '+315'`ReactPerf.printOperations(...)` instead.');316warnedAboutPrintDOM=true;317return printOperations(measurements);318}319var warnedAboutGetMeasurementsSummaryMap=false;320function getMeasurementsSummaryMap(measurements){321warning(322warnedAboutGetMeasurementsSummaryMap,323'`ReactPerf.getMeasurementsSummaryMap(...)` is deprecated. Use '+324'`ReactPerf.getWasted(...)` instead.');325warnedAboutGetMeasurementsSummaryMap=true;326return getWasted(measurements);327}328function start(){329if(!__DEV__){330warnInProduction();331return;332}333ReactDebugTool.beginProfiling();334}335function stop(){336if(!__DEV__){337warnInProduction();338return;339}340ReactDebugTool.endProfiling();...

e3040dReactPerf.js

Source:e3040dReactPerf.js

...135instanceCount:Object.keys(affectedIDs[key]).length});}).136sort(function(a,b){return(137b.inclusiveRenderDuration-a.inclusiveRenderDuration);});138}139function getWasted(){var flushHistory=arguments.length>0&&arguments[0]!==undefined?arguments[0]:getLastMeasurements();140if(!__DEV__){141warnInProduction();142return[];143}144var aggregatedStats={};145var affectedIDs={};146function updateAggregatedStats(treeSnapshot,instanceID,applyUpdate){var _treeSnapshot$instanc2=147treeSnapshot[instanceID],displayName=_treeSnapshot$instanc2.displayName,ownerID=_treeSnapshot$instanc2.ownerID;148var owner=treeSnapshot[ownerID];149var key=(owner?owner.displayName+' > ':'')+displayName;150var stats=aggregatedStats[key];151if(!stats){152affectedIDs[key]={};153stats=aggregatedStats[key]={154key:key,155instanceCount:0,156inclusiveRenderDuration:0,157renderCount:0};158}159affectedIDs[key][instanceID]=true;160applyUpdate(stats);161}162flushHistory.forEach(function(flush){var163measurements=flush.measurements,treeSnapshot=flush.treeSnapshot,operations=flush.operations;164var isDefinitelyNotWastedByID={};165operations.forEach(function(operation){var166instanceID=operation.instanceID;167var nextParentID=instanceID;168while(nextParentID){169isDefinitelyNotWastedByID[nextParentID]=true;170nextParentID=treeSnapshot[nextParentID].parentID;171}172});173var renderedCompositeIDs={};174measurements.forEach(function(measurement){var175instanceID=measurement.instanceID,timerType=measurement.timerType;176if(timerType!=='render'){177return;178}179renderedCompositeIDs[instanceID]=true;180});181measurements.forEach(function(measurement){var182duration=measurement.duration,instanceID=measurement.instanceID,timerType=measurement.timerType;183if(timerType!=='render'){184return;185}var186updateCount=treeSnapshot[instanceID].updateCount;187if(isDefinitelyNotWastedByID[instanceID]||updateCount===0){188return;189}190updateAggregatedStats(treeSnapshot,instanceID,function(stats){191stats.renderCount++;192});193var nextParentID=instanceID;194while(nextParentID){195var isWasted=196renderedCompositeIDs[nextParentID]&&197!isDefinitelyNotWastedByID[nextParentID];198if(isWasted){199updateAggregatedStats(treeSnapshot,nextParentID,function(stats){200stats.inclusiveRenderDuration+=duration;201});202}203nextParentID=treeSnapshot[nextParentID].parentID;204}205});206});207return Object.keys(aggregatedStats).208map(function(key){return babelHelpers.extends({},209aggregatedStats[key],{210instanceCount:Object.keys(affectedIDs[key]).length});}).211sort(function(a,b){return(212b.inclusiveRenderDuration-a.inclusiveRenderDuration);});213}214function getOperations(){var flushHistory=arguments.length>0&&arguments[0]!==undefined?arguments[0]:getLastMeasurements();215if(!__DEV__){216warnInProduction();217return[];218}219var stats=[];220flushHistory.forEach(function(flush,flushIndex){var221operations=flush.operations,treeSnapshot=flush.treeSnapshot;222operations.forEach(function(operation){var223instanceID=operation.instanceID,type=operation.type,payload=operation.payload;var _treeSnapshot$instanc3=224treeSnapshot[instanceID],displayName=_treeSnapshot$instanc3.displayName,ownerID=_treeSnapshot$instanc3.ownerID;225var owner=treeSnapshot[ownerID];226var key=(owner?owner.displayName+' > ':'')+displayName;227stats.push({228flushIndex:flushIndex,229instanceID:instanceID,230key:key,231type:type,232ownerID:ownerID,233payload:payload});234});235});236return stats;237}238function printExclusive(flushHistory){239if(!__DEV__){240warnInProduction();241return;242}243var stats=getExclusive(flushHistory);244var table=stats.map(function(item){var245key=item.key,instanceCount=item.instanceCount,totalDuration=item.totalDuration;246var renderCount=item.counts.render||0;247var renderDuration=item.durations.render||0;248return{249'Component':key,250'Total time (ms)':roundFloat(totalDuration),251'Instance count':instanceCount,252'Total render time (ms)':roundFloat(renderDuration),253'Average render time (ms)':renderCount?254roundFloat(renderDuration/renderCount):255undefined,256'Render count':renderCount,257'Total lifecycle time (ms)':roundFloat(totalDuration-renderDuration)};258});259consoleTable(table);260}261function printInclusive(flushHistory){262if(!__DEV__){263warnInProduction();264return;265}266var stats=getInclusive(flushHistory);267var table=stats.map(function(item){var268key=item.key,instanceCount=item.instanceCount,inclusiveRenderDuration=item.inclusiveRenderDuration,renderCount=item.renderCount;269return{270'Owner > Component':key,271'Inclusive render time (ms)':roundFloat(inclusiveRenderDuration),272'Instance count':instanceCount,273'Render count':renderCount};274});275consoleTable(table);276}277function printWasted(flushHistory){278if(!__DEV__){279warnInProduction();280return;281}282var stats=getWasted(flushHistory);283var table=stats.map(function(item){var284key=item.key,instanceCount=item.instanceCount,inclusiveRenderDuration=item.inclusiveRenderDuration,renderCount=item.renderCount;285return{286'Owner > Component':key,287'Inclusive wasted time (ms)':roundFloat(inclusiveRenderDuration),288'Instance count':instanceCount,289'Render count':renderCount};290});291consoleTable(table);292}293function printOperations(flushHistory){294if(!__DEV__){295warnInProduction();296return;297}298var stats=getOperations(flushHistory);299var table=stats.map(function(stat){return{300'Owner > Node':stat.key,301'Operation':stat.type,302'Payload':typeof stat.payload==='object'?303JSON.stringify(stat.payload):304stat.payload,305'Flush index':stat.flushIndex,306'Owner Component ID':stat.ownerID,307'DOM Component ID':stat.instanceID};});308consoleTable(table);309}310var warnedAboutPrintDOM=false;311function printDOM(measurements){312warning(313warnedAboutPrintDOM,314'`ReactPerf.printDOM(...)` is deprecated. Use '+315'`ReactPerf.printOperations(...)` instead.');316warnedAboutPrintDOM=true;317return printOperations(measurements);318}319var warnedAboutGetMeasurementsSummaryMap=false;320function getMeasurementsSummaryMap(measurements){321warning(322warnedAboutGetMeasurementsSummaryMap,323'`ReactPerf.getMeasurementsSummaryMap(...)` is deprecated. Use '+324'`ReactPerf.getWasted(...)` instead.');325warnedAboutGetMeasurementsSummaryMap=true;326return getWasted(measurements);327}328function start(){329if(!__DEV__){330warnInProduction();331return;332}333ReactDebugTool.beginProfiling();334}335function stop(){336if(!__DEV__){337warnInProduction();338return;339}340ReactDebugTool.endProfiling();...

2959baReactPerf.js

Source:2959baReactPerf.js

...135instanceCount:Object.keys(affectedIDs[key]).length});}).136sort(function(a,b){return(137b.inclusiveRenderDuration-a.inclusiveRenderDuration);});138}139function getWasted(){var flushHistory=arguments.length>0&&arguments[0]!==undefined?arguments[0]:getLastMeasurements();140if(!__DEV__){141warnInProduction();142return[];143}144var aggregatedStats={};145var affectedIDs={};146function updateAggregatedStats(treeSnapshot,instanceID,applyUpdate){var _treeSnapshot$instanc2=147treeSnapshot[instanceID],displayName=_treeSnapshot$instanc2.displayName,ownerID=_treeSnapshot$instanc2.ownerID;148var owner=treeSnapshot[ownerID];149var key=(owner?owner.displayName+' > ':'')+displayName;150var stats=aggregatedStats[key];151if(!stats){152affectedIDs[key]={};153stats=aggregatedStats[key]={154key:key,155instanceCount:0,156inclusiveRenderDuration:0,157renderCount:0};158}159affectedIDs[key][instanceID]=true;160applyUpdate(stats);161}162flushHistory.forEach(function(flush){var163measurements=flush.measurements,treeSnapshot=flush.treeSnapshot,operations=flush.operations;164var isDefinitelyNotWastedByID={};165operations.forEach(function(operation){var166instanceID=operation.instanceID;167var nextParentID=instanceID;168while(nextParentID){169isDefinitelyNotWastedByID[nextParentID]=true;170nextParentID=treeSnapshot[nextParentID].parentID;171}172});173var renderedCompositeIDs={};174measurements.forEach(function(measurement){var175instanceID=measurement.instanceID,timerType=measurement.timerType;176if(timerType!=='render'){177return;178}179renderedCompositeIDs[instanceID]=true;180});181measurements.forEach(function(measurement){var182duration=measurement.duration,instanceID=measurement.instanceID,timerType=measurement.timerType;183if(timerType!=='render'){184return;185}var186updateCount=treeSnapshot[instanceID].updateCount;187if(isDefinitelyNotWastedByID[instanceID]||updateCount===0){188return;189}190updateAggregatedStats(treeSnapshot,instanceID,function(stats){191stats.renderCount++;192});193var nextParentID=instanceID;194while(nextParentID){195var isWasted=196renderedCompositeIDs[nextParentID]&&197!isDefinitelyNotWastedByID[nextParentID];198if(isWasted){199updateAggregatedStats(treeSnapshot,nextParentID,function(stats){200stats.inclusiveRenderDuration+=duration;201});202}203nextParentID=treeSnapshot[nextParentID].parentID;204}205});206});207return Object.keys(aggregatedStats).208map(function(key){return babelHelpers.extends({},209aggregatedStats[key],{210instanceCount:Object.keys(affectedIDs[key]).length});}).211sort(function(a,b){return(212b.inclusiveRenderDuration-a.inclusiveRenderDuration);});213}214function getOperations(){var flushHistory=arguments.length>0&&arguments[0]!==undefined?arguments[0]:getLastMeasurements();215if(!__DEV__){216warnInProduction();217return[];218}219var stats=[];220flushHistory.forEach(function(flush,flushIndex){var221operations=flush.operations,treeSnapshot=flush.treeSnapshot;222operations.forEach(function(operation){var223instanceID=operation.instanceID,type=operation.type,payload=operation.payload;var _treeSnapshot$instanc3=224treeSnapshot[instanceID],displayName=_treeSnapshot$instanc3.displayName,ownerID=_treeSnapshot$instanc3.ownerID;225var owner=treeSnapshot[ownerID];226var key=(owner?owner.displayName+' > ':'')+displayName;227stats.push({228flushIndex:flushIndex,229instanceID:instanceID,230key:key,231type:type,232ownerID:ownerID,233payload:payload});234});235});236return stats;237}238function printExclusive(flushHistory){239if(!__DEV__){240warnInProduction();241return;242}243var stats=getExclusive(flushHistory);244var table=stats.map(function(item){var245key=item.key,instanceCount=item.instanceCount,totalDuration=item.totalDuration;246var renderCount=item.counts.render||0;247var renderDuration=item.durations.render||0;248return{249'Component':key,250'Total time (ms)':roundFloat(totalDuration),251'Instance count':instanceCount,252'Total render time (ms)':roundFloat(renderDuration),253'Average render time (ms)':renderCount?254roundFloat(renderDuration/renderCount):255undefined,256'Render count':renderCount,257'Total lifecycle time (ms)':roundFloat(totalDuration-renderDuration)};258});259consoleTable(table);260}261function printInclusive(flushHistory){262if(!__DEV__){263warnInProduction();264return;265}266var stats=getInclusive(flushHistory);267var table=stats.map(function(item){var268key=item.key,instanceCount=item.instanceCount,inclusiveRenderDuration=item.inclusiveRenderDuration,renderCount=item.renderCount;269return{270'Owner > Component':key,271'Inclusive render time (ms)':roundFloat(inclusiveRenderDuration),272'Instance count':instanceCount,273'Render count':renderCount};274});275consoleTable(table);276}277function printWasted(flushHistory){278if(!__DEV__){279warnInProduction();280return;281}282var stats=getWasted(flushHistory);283var table=stats.map(function(item){var284key=item.key,instanceCount=item.instanceCount,inclusiveRenderDuration=item.inclusiveRenderDuration,renderCount=item.renderCount;285return{286'Owner > Component':key,287'Inclusive wasted time (ms)':roundFloat(inclusiveRenderDuration),288'Instance count':instanceCount,289'Render count':renderCount};290});291consoleTable(table);292}293function printOperations(flushHistory){294if(!__DEV__){295warnInProduction();296return;297}298var stats=getOperations(flushHistory);299var table=stats.map(function(stat){return{300'Owner > Node':stat.key,301'Operation':stat.type,302'Payload':typeof stat.payload==='object'?303JSON.stringify(stat.payload):304stat.payload,305'Flush index':stat.flushIndex,306'Owner Component ID':stat.ownerID,307'DOM Component ID':stat.instanceID};});308consoleTable(table);309}310var warnedAboutPrintDOM=false;311function printDOM(measurements){312warning(313warnedAboutPrintDOM,314'`ReactPerf.printDOM(...)` is deprecated. Use '+315'`ReactPerf.printOperations(...)` instead.');316warnedAboutPrintDOM=true;317return printOperations(measurements);318}319var warnedAboutGetMeasurementsSummaryMap=false;320function getMeasurementsSummaryMap(measurements){321warning(322warnedAboutGetMeasurementsSummaryMap,323'`ReactPerf.getMeasurementsSummaryMap(...)` is deprecated. Use '+324'`ReactPerf.getWasted(...)` instead.');325warnedAboutGetMeasurementsSummaryMap=true;326return getWasted(measurements);327}328function start(){329if(!__DEV__){330warnInProduction();331return;332}333ReactDebugTool.beginProfiling();334}335function stop(){336if(!__DEV__){337warnInProduction();338return;339}340ReactDebugTool.endProfiling();...

711832ReactPerf.js

Source:711832ReactPerf.js

...135instanceCount:Object.keys(affectedIDs[key]).length});}).136sort(function(a,b){return(137b.inclusiveRenderDuration-a.inclusiveRenderDuration);});138}139function getWasted(){var flushHistory=arguments.length>0&&arguments[0]!==undefined?arguments[0]:getLastMeasurements();140if(!__DEV__){141warnInProduction();142return[];143}144var aggregatedStats={};145var affectedIDs={};146function updateAggregatedStats(treeSnapshot,instanceID,applyUpdate){var _treeSnapshot$instanc2=147treeSnapshot[instanceID],displayName=_treeSnapshot$instanc2.displayName,ownerID=_treeSnapshot$instanc2.ownerID;148var owner=treeSnapshot[ownerID];149var key=(owner?owner.displayName+' > ':'')+displayName;150var stats=aggregatedStats[key];151if(!stats){152affectedIDs[key]={};153stats=aggregatedStats[key]={154key:key,155instanceCount:0,156inclusiveRenderDuration:0,157renderCount:0};158}159affectedIDs[key][instanceID]=true;160applyUpdate(stats);161}162flushHistory.forEach(function(flush){var163measurements=flush.measurements,treeSnapshot=flush.treeSnapshot,operations=flush.operations;164var isDefinitelyNotWastedByID={};165operations.forEach(function(operation){var166instanceID=operation.instanceID;167var nextParentID=instanceID;168while(nextParentID){169isDefinitelyNotWastedByID[nextParentID]=true;170nextParentID=treeSnapshot[nextParentID].parentID;171}172});173var renderedCompositeIDs={};174measurements.forEach(function(measurement){var175instanceID=measurement.instanceID,timerType=measurement.timerType;176if(timerType!=='render'){177return;178}179renderedCompositeIDs[instanceID]=true;180});181measurements.forEach(function(measurement){var182duration=measurement.duration,instanceID=measurement.instanceID,timerType=measurement.timerType;183if(timerType!=='render'){184return;185}var186updateCount=treeSnapshot[instanceID].updateCount;187if(isDefinitelyNotWastedByID[instanceID]||updateCount===0){188return;189}190updateAggregatedStats(treeSnapshot,instanceID,function(stats){191stats.renderCount++;192});193var nextParentID=instanceID;194while(nextParentID){195var isWasted=196renderedCompositeIDs[nextParentID]&&197!isDefinitelyNotWastedByID[nextParentID];198if(isWasted){199updateAggregatedStats(treeSnapshot,nextParentID,function(stats){200stats.inclusiveRenderDuration+=duration;201});202}203nextParentID=treeSnapshot[nextParentID].parentID;204}205});206});207return Object.keys(aggregatedStats).208map(function(key){return babelHelpers.extends({},209aggregatedStats[key],{210instanceCount:Object.keys(affectedIDs[key]).length});}).211sort(function(a,b){return(212b.inclusiveRenderDuration-a.inclusiveRenderDuration);});213}214function getOperations(){var flushHistory=arguments.length>0&&arguments[0]!==undefined?arguments[0]:getLastMeasurements();215if(!__DEV__){216warnInProduction();217return[];218}219var stats=[];220flushHistory.forEach(function(flush,flushIndex){var221operations=flush.operations,treeSnapshot=flush.treeSnapshot;222operations.forEach(function(operation){var223instanceID=operation.instanceID,type=operation.type,payload=operation.payload;var _treeSnapshot$instanc3=224treeSnapshot[instanceID],displayName=_treeSnapshot$instanc3.displayName,ownerID=_treeSnapshot$instanc3.ownerID;225var owner=treeSnapshot[ownerID];226var key=(owner?owner.displayName+' > ':'')+displayName;227stats.push({228flushIndex:flushIndex,229instanceID:instanceID,230key:key,231type:type,232ownerID:ownerID,233payload:payload});234});235});236return stats;237}238function printExclusive(flushHistory){239if(!__DEV__){240warnInProduction();241return;242}243var stats=getExclusive(flushHistory);244var table=stats.map(function(item){var245key=item.key,instanceCount=item.instanceCount,totalDuration=item.totalDuration;246var renderCount=item.counts.render||0;247var renderDuration=item.durations.render||0;248return{249'Component':key,250'Total time (ms)':roundFloat(totalDuration),251'Instance count':instanceCount,252'Total render time (ms)':roundFloat(renderDuration),253'Average render time (ms)':renderCount?254roundFloat(renderDuration/renderCount):255undefined,256'Render count':renderCount,257'Total lifecycle time (ms)':roundFloat(totalDuration-renderDuration)};258});259consoleTable(table);260}261function printInclusive(flushHistory){262if(!__DEV__){263warnInProduction();264return;265}266var stats=getInclusive(flushHistory);267var table=stats.map(function(item){var268key=item.key,instanceCount=item.instanceCount,inclusiveRenderDuration=item.inclusiveRenderDuration,renderCount=item.renderCount;269return{270'Owner > Component':key,271'Inclusive render time (ms)':roundFloat(inclusiveRenderDuration),272'Instance count':instanceCount,273'Render count':renderCount};274});275consoleTable(table);276}277function printWasted(flushHistory){278if(!__DEV__){279warnInProduction();280return;281}282var stats=getWasted(flushHistory);283var table=stats.map(function(item){var284key=item.key,instanceCount=item.instanceCount,inclusiveRenderDuration=item.inclusiveRenderDuration,renderCount=item.renderCount;285return{286'Owner > Component':key,287'Inclusive wasted time (ms)':roundFloat(inclusiveRenderDuration),288'Instance count':instanceCount,289'Render count':renderCount};290});291consoleTable(table);292}293function printOperations(flushHistory){294if(!__DEV__){295warnInProduction();296return;297}298var stats=getOperations(flushHistory);299var table=stats.map(function(stat){return{300'Owner > Node':stat.key,301'Operation':stat.type,302'Payload':typeof stat.payload==='object'?303JSON.stringify(stat.payload):304stat.payload,305'Flush index':stat.flushIndex,306'Owner Component ID':stat.ownerID,307'DOM Component ID':stat.instanceID};});308consoleTable(table);309}310var warnedAboutPrintDOM=false;311function printDOM(measurements){312warning(313warnedAboutPrintDOM,314'`ReactPerf.printDOM(...)` is deprecated. Use '+315'`ReactPerf.printOperations(...)` instead.');316warnedAboutPrintDOM=true;317return printOperations(measurements);318}319var warnedAboutGetMeasurementsSummaryMap=false;320function getMeasurementsSummaryMap(measurements){321warning(322warnedAboutGetMeasurementsSummaryMap,323'`ReactPerf.getMeasurementsSummaryMap(...)` is deprecated. Use '+324'`ReactPerf.getWasted(...)` instead.');325warnedAboutGetMeasurementsSummaryMap=true;326return getWasted(measurements);327}328function start(){329if(!__DEV__){330warnInProduction();331return;332}333ReactDebugTool.beginProfiling();334}335function stop(){336if(!__DEV__){337warnInProduction();338return;339}340ReactDebugTool.endProfiling();...

TimeWasted.js

Source:TimeWasted.js

1import React, { Component } from 'react';2import ChartComponent from './ChartComponent';3import excludedComponents from '../constants/excludedComponents';4import formatTime from '../utils/formatTime';5class TimeWasted extends Component {6  constructor(props) {7    super(props);8    this.state = {9      recording: false,10      measurements: [],11      activeMeasurement: 0,12    };13  }14  componentWillReceiveProps(nextProps) {15  }16  componentWillUpdate(nextProps, nextState) {17  }18  onMeasurementChange(measurement) {19    const measurementIndex = this.state.measurements.findIndex(m => m.createdAt === measurement.createdAt);20    this.setState({ activeMeasurement: measurementIndex });21  }22  toggleRecord() {23    if (!this.state.recording) {24      this.props.perf.start();25    } else {26      this.props.perf.stop();27      this.printResults();28    }29    this.setState({ recording: !this.state.recording });30  }31  printResults() {32    const getMeasurements = this.props.perf.getWasted ? this.props.perf.getWasted : this.props.perf.getMeasurementsSummaryMap;33    const measurements = getMeasurements(this.props.perf._allMeasurements)34      .filter(measurement => {35        const label = measurement.key.split(' > ').pop();36        return !excludedComponents.includes(label);37      });38    const timeWasted = {39      measurements,40      createdAt: new Date().getTime(),41    };42    const nState = this.state.measurements.concat(timeWasted);43    this.setState({ measurements: nState, activeMeasurement: (nState.length - 1) });44  }45  removeMeasurement(measurement) {46    const index = this.state.measurements.findIndex(m => m.createdAt === measurement.createdAt);47    const measurements = Object.assign([], this.state.measurements);48    measurements.splice(index, 1);49    this.setState({ measurements });50  }51  render() {52    return (<div className="time-wasted">53      <div className="left-hand">54        <div className="tools">55          <button56            onClick={this.toggleRecord.bind(this)}57            className={`recButton ${this.state.recording ? 'active' : null}`}58          />59        </div>60        {this.state.measurements.length > 0 ?61          <ul className="measurements">62            {this.state.measurements.map((measurement, i) => (<li63              className={`measurement ${i === this.state.activeMeasurement ? 'active' : ''}`}64              key={i}65              onClick={this.onMeasurementChange.bind(this, measurement)}66            >67              {formatTime(measurement.createdAt)}68              <button className="removeMeasurement x-button" onClick={this.removeMeasurement.bind(this, measurement)}>Ã</button>69            </li>)70          )}71          </ul> : <div className="no-measurements">No measurements yet, record to view some results</div>}72      </div>73      <div className="right-hand">74        {this.state.measurements[this.state.activeMeasurement] &&75          <ChartComponent76            width={10}77            height={10}78            label="Time wasted in miliseconds"79            measurement={this.state.measurements[this.state.activeMeasurement]}80          />81        }82      </div>83    </div>);84  }85}...

index.js

Source:index.js

...42function printPerfResults() {43  Perf.stop();44  Perf.printInclusive();45  Perf.printWasted();46  const totalWastedRenders = Perf.getWasted().reduce(47    (total, v) => total + v.renderCount,48    049  );50  const totalWastedTime = Perf.getWasted().reduce(51    (total, v) => total + v.inclusiveRenderDuration,52    053  );54  const totalRenderTime = Perf.getInclusive().find(v => v.key === 'PerfTest')55    .inclusiveRenderDuration;56  console.log('Render time:', Math.round(totalRenderTime), 'ms');57  console.log('Wasted time:', Math.round(totalWastedTime), 'ms');58  console.log('Wasted renders:', totalWastedRenders);...

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.waitForTimeout(1000);7  const wasted = await page.getWasted();8  console.log(wasted);9  await browser.close();10})();

Using AI Code Generation

1(async () => {2    const { chromium } = require('playwright');3    const browser = await chromium.launch();4    const context = await browser.newContext();5    const page = await context.newPage();6    const wasted = await page.evaluate(() => window.playwright.getWasted());7    console.log(wasted);8})();9{

Using AI Code Generation

1const { getWasted } = require('playwright/lib/utils/utils');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.click('text=Google apps');8  const wasted = getWasted();9  console.log(wasted);10  await browser.close();11})();

Using AI Code Generation

1const { chromium } = require('playwright');2const { getWasted } = require('playwright/lib/server/trace/recorder/recorderApp');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=More information...');8  await page.close();9  const wasted = getWasted(page);10  console.log(wasted);11  await browser.close();12})();13  {14  },15  {16  },17  {18  },19  {20  },21  {22  },23  {24  },25  {

Using AI Code Generation

1const { getWasted } = require('@playwright/test/lib/utils/utils');2const { chromium } = require('@playwright/test');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const wasted = getWasted(page);8  console.log(wasted);9  await browser.close();10})();11const { getWasted } = require('@playwright/test/lib/utils/utils');12const { chromium } = require('@playwright/test');13(async () => {14  const browser = await chromium.launch();15  const context = await browser.newContext();16  const page = await context.newPage();17  const frame = page.frames()[1];18  const wasted = getWasted(frame);19  console.log(wasted);20  await browser.close();21})();22const { getWasted } = require('@playwright/test/lib/utils/utils');23const { chromium } = require('@playwright/test');24(async () => {25  const browser = await chromium.launch();26  const context = await browser.newContext();27  const page = await context.newPage();28  const frame = page.frames()[1];29  console.log(wasted);30  await browser.close();31})();32const { getWasted }

Using AI Code Generation

1const { getWasted } = require('@playwright/test/lib/utils/wasteful');2(async () => {3  const wasted = await getWasted();4  console.log(wasted);5})();6const { test } = require('@playwright/test');7test('wasted time', async ({ page, getWasted }) => {8  const wasted = await getWasted();9  console.log(wasted);10});

Using AI Code Generation

1const playwright = require('playwright');2const { getWasted } = require('playwright/lib/utils/utils');3(async () => {4  const browser = await playwright.chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  const wasted = getWasted(page);8  console.log(wasted);9  await browser.close();10})();11const playwright = require('playwright');12(async () => {13  const browser = await playwright.chromium.launch({ headless: false });14  const context = await browser.newContext();15  const page = await context.newPage();16  await page.waitForTimeout(3000);17  const wasted = getWasted(page);18  console.log(wasted);19  await browser.close();20})();

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:

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.
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.
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.
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.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
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.
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.
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.
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.
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.
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.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.