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How to use startProfiling method in Playwright Internal

Best JavaScript code snippet using playwright-internal

profile.js

Source:profile.js

...12  datadir = params.datadir;13  eventEmitter = params.eventEmitter;14  logger.info('Profiler initialized', { datadir });15};16function startProfiling(req, res) {17  const timestamp = Date.now();18  const timeout = req.params && req.params.timeout || 5000;19  const id = `profile-${timeout}ms-${timestamp}`;20  profiler.startProfiling(id);21  setStatus(id, 'started', timeout);22  setTimeout(() => stopProfiling(id), timeout);23  res.status(200).send(`Started profiling for ${timeout} seconds\nid: ${id}\n`);24}25function stopProfiling(id) {26  const profile = profiler.stopProfiling(id);27  try {28    fs.writeFile(`${datadir}/${id}.cpuprofile`, JSON.stringify(profile));29    setStatus(id, 'finished');30  } catch (err) {31    setStatus(id, 'failed', err.message);32  }33}34function setStatus(id, status, data) {...

track-type-dependecy-test.js

Source:track-type-dependecy-test.js

...6  setup(() => {7    resetProfiler();8  });9  test('it reports the types used in a query', () => {10    startProfiling();11    // eslint-disable-next-line no-new12    new Query(typeBundle, (root) => {13      root.add('shop', (shop) => {14        shop.add('name');15        shop.addConnection('products', (products) => {16          products.add('handle');17          products.addConnection('variants', (variants) => {18            variants.add('price');19          });20        });21      });22    });23    assert.deepEqual(captureTypeProfile(), [24      'Boolean',25      'ID',26      'Money',27      'PageInfo',28      'Product',29      'ProductConnection',30      'ProductEdge',31      'ProductVariant',32      'ProductVariantConnection',33      'ProductVariantEdge',34      'QueryRoot',35      'Shop',36      'String'37    ]);38  });39  test('it pauses tracking when `pauseProfiling` is called', () => {40    startProfiling();41    // eslint-disable-next-line no-new42    new Query(typeBundle, (root) => {43      root.add('shop', (shop) => {44        shop.add('name');45      });46    });47    pauseProfiling();48    // eslint-disable-next-line no-new49    new Query(typeBundle, (root) => {50      root.add('shop', (shop) => {51        shop.add('name');52        shop.addConnection('products', (products) => {53          products.add('handle');54          products.addConnection('variants', (variants) => {55            variants.add('price');56          });57        });58      });59    });60    startProfiling();61    // eslint-disable-next-line no-new62    new Query(typeBundle, (root) => {63      root.add('node', {id: 'gid://shopfiy/Product/1234'}, (node) => {64        node.add('id');65      });66    });67    assert.deepEqual(captureTypeProfile(), [68      'ID',69      'Node',70      'QueryRoot',71      'Shop',72      'String'73    ]);74  });75  test('it clears the tracked types when `resetProfiler` is called', () => {76    startProfiling();77    // eslint-disable-next-line no-new78    new Query(typeBundle, (root) => {79      root.add('shop', (shop) => {80        shop.add('name');81      });82    });83    resetProfiler();84    assert.deepEqual(captureTypeProfile(), []);85  });86  test('it stops tracking when `resetTypes` is called (returning the tracker to it\'s initial state.', () => {87    startProfiling();88    resetProfiler();89    // eslint-disable-next-line no-new90    new Query(typeBundle, (root) => {91      root.add('shop', (shop) => {92        shop.add('name');93      });94    });95    assert.deepEqual(captureTypeProfile(), []);96  });...

Scatter.js

Source:Scatter.js

1var _ = require('lodash'),2  Container = require('./Container'),3  CONSTANTS = require('./constants'),4  fs = require('fs'),5  path = require('path'),6  Resolver = require('./Resolver');7/**8 *9 */10function Scatter(options) {11  this.options = options = options ? _.clone(options) : {};12  13  _.defaults(options, {14    instantiateTimeout: 5000,15    initializeTimeout: 500016  });17  18  if(options.log !== void 0) {19    this.log = options.log;20  } else {21    this.log = options.log = function(){};22  }23  24  if(options.startProfiling !== void 0) {25    this.startProfiling = options.startProfiling;26  } else {27    this.startProfiling = options.startProfiling = function(){28      return {29        start: function(){},30        pause: function(){},31        end: function(){}32      };33    };34  }35  this.resolver = new Resolver(options);36  37  38  options.plugins = options.plugins || [];39  40  var pluginsRoot = path.join(__dirname, 'plugins');41  options.plugins = options.plugins.concat(fs.readdirSync(pluginsRoot)42    .map(function(plugin) {43      var pluginClass = require(path.join(pluginsRoot, plugin));44      return new pluginClass();45    }));46  this.container = new Container(this.resolver, options);47}48Scatter.prototype.registerParticles = function() {49  return this.resolver.registerParticles.apply(this.resolver, arguments);50};51Scatter.prototype.registerParticle = function() {52  return this.resolver.registerParticles.apply(this.resolver, arguments);53};54Scatter.prototype.setNodeModulesDir = function() {55  return this.resolver.setNodeModulesDir.apply(this.resolver, arguments);56};57Scatter.prototype.assemble = function(scope) {58  return this.container.assemble(scope);59};60/**61 *62 * @returns {*}63 * @private64 */65Scatter.prototype.initializeAll = function() {66  return this.container.initializeAll();67};68Scatter.prototype.load = function(name) {69  return this.container.load(name, undefined, CONSTANTS.INIT_OPTION_INIT_TREE);70};71Scatter.prototype.newStatefulContainer = function(context) {72  return this.container.newStatefulContainer(context);73};74Scatter.prototype.registerModule = function() {75  return this.container.registerModule.apply(this.container, arguments);76};77Scatter.prototype.registerModuleInstance = function() {78  return this.container.registerModuleInstance.apply(this.container, arguments);79};...

ion-lazy-tables.js

Source:ion-lazy-tables.js

...19        (table (export "table") 10 anyfunc)20        (elem (i32.const 0) $add)21    )`).exports;22    for (var i = 0; i < ITER; i++) {23        startProfiling();24        assertEq(table.get(0)(i, i+1), i*2+1);25        assertEqPreciseStacks(endProfiling(), EXPECTED_STACKS);26    }27}28function withTier2() {29    setJitCompilerOption('wasm.delay-tier2', 1);30    var module = new WebAssembly.Module(wasmTextToBinary(`(module31        (func $add (result i32) (param i32) (param i32)32         get_local 033         get_local 134         i32.add35        )36        (table (export "table") 10 anyfunc)37        (elem (i32.const 0) $add)38    )`));39    var { table } = new WebAssembly.Instance(module).exports;40    let i = 0;41    do {42        i++;43        startProfiling();44        assertEq(table.get(0)(i, i+1), i*2+1);45        assertEqPreciseStacks(endProfiling(), EXPECTED_STACKS);46    } while (!wasmHasTier2CompilationCompleted(module));47    for (i = 0; i < ITER; i++) {48        startProfiling();49        assertEq(table.get(0)(i, i+1), i*2+1);50        assertEqPreciseStacks(endProfiling(), EXPECTED_STACKS);51    }52    setJitCompilerOption('wasm.delay-tier2', 0);53}54enableGeckoProfiling();55main();56withTier2();...

profiler.js

Source:profiler.js

...66  }67  return new Snapshot(path);68}69/**70 * startProfiling()71 * startProfiling(path)72 * startProfiling(duration)73 * startProfiling(path, duration)74 */75function startProfiling() {76  var path = `${process.cwd()}/Profile-${Date.now()}`;77  var duration = -1;78  if (arguments.length === 1) {79    if (typeof (arguments[0]) === 'number') {80      duration = arguments[0];81    } else if (typeof (arguments[0]) === 'string') {82      path = arguments[0];83    }84  } else if (arguments.length === 2) {85    path = arguments[0];86    duration = arguments[1];87  }88  native.startProfiling(path, duration);89}90function stopProfiling() {91  native.stopProfiling();92  return new Profile();93}94exports.takeSnapshot = takeSnapshot;95exports.startProfiling = startProfiling;...

profiling.js

Source:profiling.js

...9    timeoutProfiling = setTimeout(resetProfiler, timeoutProfilingDuration);10    const profile = profiler.stopProfiling();11    profile.delete();12    profiler.deleteAllProfiles();13    profiler.startProfiling(new Date().getTime().toString());14    return profile;15}16function startProfiling(opts) {17    if (!opts)18        opts = {};19    const samplingInterval = !!opts.samplingInterval ? opts.samplingInterval : DEFAULT_SAMPLING_INTERVAL;20    profiler.setSamplingInterval(samplingInterval);21    profiler.startProfiling(new Date().getTime().toString());22    timeoutProfiling = setTimeout(resetProfiler, timeoutProfilingDuration);23};24function stopProfiling() {25    if (!!timeoutProfiling)26        clearTimeout(timeoutProfiling);27    const profile = profiler.stopProfiling();28    profile.delete();29    profiler.deleteAllProfiles();30}...

anyref-global-prebarrier.js

Source:anyref-global-prebarrier.js

...16if (!isSingleStepProfilingEnabled) {17    quit(0);18}19enableGeckoProfiling();20startProfiling();21gczeal(4, 1);22e.set(obj);23gczeal(0);24assertEqPreciseStacks(endProfiling(), [['', '!>', '0,!>', '!>', '']]);25startProfiling();26gczeal(4, 1);27e.set(null);28gczeal(0);29// We're losing stack info in the prebarrier code....

binding.test.js

Source:binding.test.js

1const assert = require('assert')2const { startProfiling } = require('../lib/binding')3assert.ok(startProfiling)4assert.strictEqual(typeof startProfiling, 'function')...

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  const profile = await page._startProfiling({ path: 'trace.json' });7  await page.click('text=Get started');8  await profile.stop();9  await browser.close();10})();11{12    {13      "args": {}14    },15    {16      "args": {}17    }18}19{20    {21      "args": {}22    },23    {24      "args": {}25    }26}27{28    {

Using AI Code Generation

1const fs = require('fs');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.screenshot({ path: 'google.png' });8  await page.startProfiling();9  const profile = await page.stopProfiling();10  fs.writeFileSync('profile.cpuprofile', JSON.stringify(profile));11  await browser.close();12})();13We can also use the startProfiling() method to start recording the CPU profile of a specific page. This method accepts an optional argument which is an object with the following properties:14The following example demonstrates how to use the startProfiling() method to start recording the CPU profile of a specific page:15const fs = require('fs');16const { chromium } = require('playwright');17(async () => {18  const browser = await chromium.launch();19  const context = await browser.newContext();20  const page = await context.newPage();21  await page.screenshot({ path: 'google.png' });22  await page.startProfiling({ path: 'profile.cpuprofile' });23  await browser.close();24})();25The stopProfiling() method can be used to stop recording the CPU profile. This method returns a Promise which resolves to a profile object. The profile object can be saved to a file using

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.evaluate(() => {7    window.playwright.startProfiling();8  });9  const profile = await page.evaluate(() => {10    return window.playwright.stopProfiling();11  });12  console.log(profile);13  await browser.close();14})();15import { chromium } from 'playwright';16(async () => {17  const browser = await chromium.launch();18  const context = await browser.newContext();19  const page = await context.newPage();20  await page.evaluate(() => {21    window.playwright.startProfiling();22  });23  const profile = await page.evaluate(() => {24    return window.playwright.stopProfiling();25  });26  console.log(profile);27  await browser.close();28})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  await page.startProfiling();6  const profile = await page.stopProfiling();7  await profile.saveAs('trace.zip');8  await browser.close();9})();10const { chromium } = require('playwright');11(async () => {12  const browser = await chromium.launch();13  const page = await browser.newPage();14  await page.startTracing();15  const trace = await page.stopTracing();16  await trace.saveAs('trace.zip');17  await browser.close();18})();19const { chromium } = require('playwright');20(async () => {21  const browser = await chromium.launch();22  const page = await browser.newPage();23  await page.startVideoRecording();24  await page.stopVideoRecording();25  await browser.close();26})();27const { chromium } = require('playwright');28(async () => {29  const browser = await chromium.launch();30  const page = await browser.newPage();31  await page.startTracing();32  const trace = await page.stopTracing();33  await trace.saveAs('trace.zip');34  await browser.close();35})();36const { chromium } = require('playwright');37(async () => {38  const browser = await chromium.launch();39  const page = await browser.newPage();40  await page.startVideoRecording();41  await page.stopVideoRecording();42  await browser.close();43})();44const { chromium } = require('playwright');

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch();4  const page = await browser.newPage();5  await page.startProfiling({path: 'test.cpuprofile'});6  await page.evaluate(() => {7    let sum = 0;8    for (let i = 0; i < 100000000; i++) {9      sum += i;10    }11    return sum;12  });13  await page.stopProfiling();14  await browser.close();15})();

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch();4  const page = await browser.newPage();5  const profile = await page.context().startProfiling({path: 'profile.json'});6  await profile.stop();7  await browser.close();8})();9const playwright = require('playwright');10(async () => {11  const browser = await playwright.chromium.launch();12  const page = await browser.newPage();13  const profile = await page.context().startProfiling({path: 'profile.json'});14  await profile.stop();15  await browser.close();16})();17const playwright = require('playwright');18(async () => {19  const browser = await playwright.chromium.launch();20  const page = await browser.newPage();21  const snapshot = await page.context().saveSnapshot({path: 'snapshot.json'});22  await browser.close();23})();24const playwright = require('playwright');25(async () => {26  const browser = await playwright.chromium.launch();27  const page = await browser.newPage();28  await page.context().loadSnapshot({path: 'snapshot.json'});29  await browser.close();30})();31const playwright = require('playwright');32(async () => {33  const browser = await playwright.chromium.launch();34  const page = await browser.newPage();35  const trace = await page.context().startTracing({path: 'trace.json'});36  await trace.stop();37  await browser.close();38})();39const playwright = require('playwright');40(async () => {41  const browser = await playwright.chromium.launch();42  const page = await browser.newPage();43  const trace = await page.context().startTracing({path: 'trace.json'});44  await trace.stop();45  await browser.close();46})();47const playwright = require('playwright');48(async () => {

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3const browser = await chromium.launch();4const page = await browser.newPage();5await page._startProfiling();6await page.click('text=Sign in');7await page._stopProfiling();8await browser.close();9})();10const { chromium } = require('playwright');11(async () => {12const browser = await chromium.launch();13const page = await browser.newPage();14await page._startProfiling();15await page.click('text=Sign in');16await page._stopProfiling();17await browser.close();18})();19const { chromium } = require('playwright');20(async () => {21const browser = await chromium.launch();22const page = await browser.newPage();23await page._startTracing();24await page.click('text=Sign in');25await page._stopTracing();26await browser.close();27})();28const { chromium } = require('playwright');29(async () => {30const browser = await chromium.launch();31const page = await browser.newPage();32await page._startTracing();33await page.click('text=Sign in');34await page._stopTracing();35await browser.close();36})();37const { chromium } = require('playwright');38(async () => {39const browser = await chromium.launch();40const page = await browser.newPage();41await page._startJSCoverage();42await page.click('text=Sign in');43const coverage = await page._stopJSCoverage();44await browser.close();45})();

Using AI Code Generation

1const profile = await page._internal.startProfiling({ name: 'profile-name' });2const profile = await page._internal.stopProfiling({ name: 'profile-name' });3const profile = await page._internal.takeSnapshot({ name: 'profile-name' });4const profile = await page._internal.takeSnapshot({ name: 'profile-name' });5const profile = await page._internal.saveSnapshot({ name: 'profile-name' });6const profile = await page._internal.getProfile({ name: 'profile-name' });7const profile = await page._internal.getProfile({ name: 'profile-name' });8const profile = await page._internal.getProfile({ name: 'profile-name' });9const profile = await page._internal.getProfile({ name: 'profile-name' });10const profile = await page._internal.getProfile({ name: 'profile-name' });

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