How to use ensureCachedData method in Playwright Internal

Best JavaScript code snippet using playwright-internal

snapshotterInjected.js

Source:snapshotterInjected.js

...30  const kEndOfList = Symbol('__playwright_end_of_list_');31  function resetCachedData(obj) {32    delete obj[kCachedData];33  }34  function ensureCachedData(obj) {35    if (!obj[kCachedData]) obj[kCachedData] = {};36    return obj[kCachedData];37  }38  function removeHash(url) {39    try {40      const u = new URL(url);41      u.hash = '';42      return u.toString();43    } catch (e) {44      return url;45    }46  }47  class Streamer {48    // To avoid invalidating due to our own reads.49    constructor() {50      this._removeNoScript = true;51      this._lastSnapshotNumber = 0;52      this._staleStyleSheets = new Set();53      this._readingStyleSheet = false;54      this._fakeBase = void 0;55      this._observer = void 0;56      this._interceptNativeMethod(window.CSSStyleSheet.prototype, 'insertRule', sheet => this._invalidateStyleSheet(sheet));57      this._interceptNativeMethod(window.CSSStyleSheet.prototype, 'deleteRule', sheet => this._invalidateStyleSheet(sheet));58      this._interceptNativeMethod(window.CSSStyleSheet.prototype, 'addRule', sheet => this._invalidateStyleSheet(sheet));59      this._interceptNativeMethod(window.CSSStyleSheet.prototype, 'removeRule', sheet => this._invalidateStyleSheet(sheet));60      this._interceptNativeGetter(window.CSSStyleSheet.prototype, 'rules', sheet => this._invalidateStyleSheet(sheet));61      this._interceptNativeGetter(window.CSSStyleSheet.prototype, 'cssRules', sheet => this._invalidateStyleSheet(sheet));62      this._fakeBase = document.createElement('base');63      this._observer = new MutationObserver(list => this._handleMutations(list));64      const observerConfig = {65        attributes: true,66        subtree: true67      };68      this._observer.observe(document, observerConfig);69    }70    _interceptNativeMethod(obj, method, cb) {71      const native = obj[method];72      if (!native) return;73      obj[method] = function (...args) {74        const result = native.call(this, ...args);75        cb(this, result);76        return result;77      };78    }79    _interceptNativeGetter(obj, prop, cb) {80      const descriptor = Object.getOwnPropertyDescriptor(obj, prop);81      Object.defineProperty(obj, prop, { ...descriptor,82        get: function () {83          const result = descriptor.get.call(this);84          cb(this, result);85          return result;86        }87      });88    }89    _handleMutations(list) {90      for (const mutation of list) ensureCachedData(mutation.target).attributesCached = undefined;91    }92    _invalidateStyleSheet(sheet) {93      if (this._readingStyleSheet) return;94      this._staleStyleSheets.add(sheet);95    }96    _updateStyleElementStyleSheetTextIfNeeded(sheet) {97      const data = ensureCachedData(sheet);98      if (this._staleStyleSheets.has(sheet)) {99        this._staleStyleSheets.delete(sheet);100        try {101          data.cssText = this._getSheetText(sheet);102        } catch (e) {// Sometimes we cannot access cross-origin stylesheets.103        }104      }105      return data.cssText;106    } // Returns either content, ref, or no override.107    _updateLinkStyleSheetTextIfNeeded(sheet, snapshotNumber) {108      const data = ensureCachedData(sheet);109      if (this._staleStyleSheets.has(sheet)) {110        this._staleStyleSheets.delete(sheet);111        try {112          data.cssText = this._getSheetText(sheet);113          data.cssRef = snapshotNumber;114          return data.cssText;115        } catch (e) {// Sometimes we cannot access cross-origin stylesheets.116        }117      }118      return data.cssRef === undefined ? undefined : snapshotNumber - data.cssRef;119    }120    markIframe(iframeElement, frameId) {121      iframeElement[kSnapshotFrameId] = frameId;122    }123    reset() {124      this._staleStyleSheets.clear();125      const visitNode = node => {126        resetCachedData(node);127        if (node.nodeType === Node.ELEMENT_NODE) {128          const element = node;129          if (element.shadowRoot) visitNode(element.shadowRoot);130        }131        for (let child = node.firstChild; child; child = child.nextSibling) visitNode(child);132      };133      visitNode(document.documentElement);134      visitNode(this._fakeBase);135    }136    _sanitizeUrl(url) {137      if (url.startsWith('javascript:')) return '';138      return url;139    }140    _sanitizeSrcSet(srcset) {141      return srcset.split(',').map(src => {142        src = src.trim();143        const spaceIndex = src.lastIndexOf(' ');144        if (spaceIndex === -1) return this._sanitizeUrl(src);145        return this._sanitizeUrl(src.substring(0, spaceIndex).trim()) + src.substring(spaceIndex);146      }).join(', ');147    }148    _resolveUrl(base, url) {149      if (url === '') return '';150      try {151        return new URL(url, base).href;152      } catch (e) {153        return url;154      }155    }156    _getSheetBase(sheet) {157      let rootSheet = sheet;158      while (rootSheet.parentStyleSheet) rootSheet = rootSheet.parentStyleSheet;159      if (rootSheet.ownerNode) return rootSheet.ownerNode.baseURI;160      return document.baseURI;161    }162    _getSheetText(sheet) {163      this._readingStyleSheet = true;164      try {165        const rules = [];166        for (const rule of sheet.cssRules) rules.push(rule.cssText);167        return rules.join('\n');168      } finally {169        this._readingStyleSheet = false;170      }171    }172    captureSnapshot() {173      const timestamp = performance.now();174      const snapshotNumber = ++this._lastSnapshotNumber;175      let nodeCounter = 0;176      let shadowDomNesting = 0; // Ensure we are up to date.177      this._handleMutations(this._observer.takeRecords());178      const visitNode = node => {179        const nodeType = node.nodeType;180        const nodeName = nodeType === Node.DOCUMENT_FRAGMENT_NODE ? 'template' : node.nodeName;181        if (nodeType !== Node.ELEMENT_NODE && nodeType !== Node.DOCUMENT_FRAGMENT_NODE && nodeType !== Node.TEXT_NODE) return;182        if (nodeName === 'SCRIPT') return;183        if (this._removeNoScript && nodeName === 'NOSCRIPT') return;184        const data = ensureCachedData(node);185        const values = [];186        let equals = !!data.cached;187        let extraNodes = 0;188        const expectValue = value => {189          equals = equals && data.cached[values.length] === value;190          values.push(value);191        };192        const checkAndReturn = n => {193          data.attributesCached = true;194          if (equals) return {195            equals: true,196            n: [[snapshotNumber - data.ref[0], data.ref[1]]]197          };198          nodeCounter += extraNodes;199          data.ref = [snapshotNumber, nodeCounter++];200          data.cached = values;201          return {202            equals: false,203            n204          };205        };206        if (nodeType === Node.TEXT_NODE) {207          const value = node.nodeValue || '';208          expectValue(value);209          return checkAndReturn(value);210        }211        if (nodeName === 'STYLE') {212          const sheet = node.sheet;213          let cssText;214          if (sheet) cssText = this._updateStyleElementStyleSheetTextIfNeeded(sheet);215          cssText = cssText || node.textContent || '';216          expectValue(cssText); // Compensate for the extra 'cssText' text node.217          extraNodes++;218          return checkAndReturn(['style', {}, cssText]);219        }220        const attrs = {};221        const result = [nodeName, attrs];222        const visitChild = child => {223          const snapshot = visitNode(child);224          if (snapshot) {225            result.push(snapshot.n);226            expectValue(child);227            equals = equals && snapshot.equals;228          }229        };230        const visitChildStyleSheet = child => {231          const snapshot = visitStyleSheet(child);232          if (snapshot) {233            result.push(snapshot.n);234            expectValue(child);235            equals = equals && snapshot.equals;236          }237        };238        if (nodeType === Node.DOCUMENT_FRAGMENT_NODE) attrs[kShadowAttribute] = 'open';239        if (nodeType === Node.ELEMENT_NODE) {240          const element = node;241          if (nodeName === 'INPUT') {242            const value = element.value;243            expectValue('value');244            expectValue(value);245            attrs['value'] = value;246            if (element.checked) {247              expectValue('checked');248              attrs['checked'] = '';249            }250          }251          if (element.scrollTop) {252            expectValue(kScrollTopAttribute);253            expectValue(element.scrollTop);254            attrs[kScrollTopAttribute] = '' + element.scrollTop;255          }256          if (element.scrollLeft) {257            expectValue(kScrollLeftAttribute);258            expectValue(element.scrollLeft);259            attrs[kScrollLeftAttribute] = '' + element.scrollLeft;260          }261          if (element.shadowRoot) {262            ++shadowDomNesting;263            visitChild(element.shadowRoot);264            --shadowDomNesting;265          }266        }267        if (nodeName === 'TEXTAREA') {268          const value = node.value;269          expectValue(value);270          extraNodes++; // Compensate for the extra text node.271          result.push(value);272        } else {273          if (nodeName === 'HEAD') {274            // Insert fake <base> first, to ensure all <link> elements use the proper base uri.275            this._fakeBase.setAttribute('href', document.baseURI);276            visitChild(this._fakeBase);277          }278          for (let child = node.firstChild; child; child = child.nextSibling) visitChild(child);279          expectValue(kEndOfList);280          let documentOrShadowRoot = null;281          if (node.ownerDocument.documentElement === node) documentOrShadowRoot = node.ownerDocument;else if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) documentOrShadowRoot = node;282          if (documentOrShadowRoot) {283            for (const sheet of documentOrShadowRoot.adoptedStyleSheets || []) visitChildStyleSheet(sheet);284            expectValue(kEndOfList);285          }286        } // Process iframe src attribute before bailing out since it depends on a symbol, not the DOM.287        if (nodeName === 'IFRAME' || nodeName === 'FRAME') {288          const element = node;289          const frameId = element[kSnapshotFrameId];290          const name = 'src';291          const value = frameId ? `/snapshot/${frameId}` : '';292          expectValue(name);293          expectValue(value);294          attrs[name] = value;295        } // We can skip attributes comparison because nothing else has changed,296        // and mutation observer didn't tell us about the attributes.297        if (equals && data.attributesCached && !shadowDomNesting) return checkAndReturn(result);298        if (nodeType === Node.ELEMENT_NODE) {299          const element = node;300          for (let i = 0; i < element.attributes.length; i++) {301            const name = element.attributes[i].name;302            if (name === 'value' && (nodeName === 'INPUT' || nodeName === 'TEXTAREA')) continue;303            if (nodeName === 'LINK' && name === 'integrity') continue;304            if (nodeName === 'IFRAME' && name === 'src') continue;305            let value = element.attributes[i].value;306            if (name === 'src' && nodeName === 'IMG') value = this._sanitizeUrl(value);else if (name === 'srcset' && nodeName === 'IMG') value = this._sanitizeSrcSet(value);else if (name === 'srcset' && nodeName === 'SOURCE') value = this._sanitizeSrcSet(value);else if (name === 'href' && nodeName === 'LINK') value = this._sanitizeUrl(value);else if (name.startsWith('on')) value = '';307            expectValue(name);308            expectValue(value);309            attrs[name] = value;310          }311          expectValue(kEndOfList);312        }313        if (result.length === 2 && !Object.keys(attrs).length) result.pop(); // Remove empty attrs when there are no children.314        return checkAndReturn(result);315      };316      const visitStyleSheet = sheet => {317        const data = ensureCachedData(sheet);318        const oldCSSText = data.cssText;319        const cssText = this._updateStyleElementStyleSheetTextIfNeeded(sheet) || '';320        if (cssText === oldCSSText) return {321          equals: true,322          n: [[snapshotNumber - data.ref[0], data.ref[1]]]323        };324        data.ref = [snapshotNumber, nodeCounter++];325        return {326          equals: false,327          n: ['template', {328            [kStyleSheetAttribute]: cssText329          }]330        };331      };...

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 browser.close();7})();8const { chromium } = require('playwright');9const { ensureCachedData } = require('playwright/lib/server/cjs/playwright.js');10(async () => {11  const browser = await chromium.launch();12  const context = await browser.newContext();13  const page = await context.newPage();14  await browser.close();15})();16const { chromium } = require('playwright');17const { ensureCachedData } = require('playwright/lib/server/cjs/playwright.js');18(async () => {19  const browser = await chromium.launch();20  const context = await browser.newContext();21  const page = await context.newPage();22  await browser.close();23})();24const { chromium } = require('playwright');25const { ensureCachedData } = require('playwright/lib/server/cjs/playwright.js');

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  await browser.close();6})();7const { chromium } = require('playwright');

Using AI Code Generation

1const playwright = require('playwright');2const fs = require('fs');3const path = require('path');4(async () => {5  const browser = await playwright.chromium.launch();6  const context = await browser.newContext();7  const page = await context.newPage();8  const browserPath = browser._browserContext._browser._process._executablePath;9  const browserName = path.basename(browserPath);10  const browserRevision = browser._browserContext._browser._options._revision;11  const browserCachePath = path.join(__dirname, browserName + '-' + browserRevision + '-cache');12  await browser._browserContext._browser._ensureCachedData(browserCachePath);13  await browser.close();14  await fs.copyFileSync(browserCachePath, path.join(__dirname, 'cache'));15})();16const playwright = require('playwright');17const fs = require('fs');18const path = require('path');19(async () => {20  const browser = await playwright.chromium.launch();21  const context = await browser.newContext();22  const page = await context.newPage();23  const browserPath = browser._browserContext._browser._process._executablePath;24  const browserName = path.basename(browserPath);25  const browserRevision = browser._browserContext._browser._options._revision;26  const browserCachePath = path.join(__dirname, browserName + '-' + browserRevision + '-cache');27  await browser._browserContext._browser._ensureCachedData(browserCa

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright['chromium'].launch({ headless: false });4  const page = await browser.newPage();5  await page.screenshot({ path: 'google.png' });6  await browser.close();7})();8module.exports = {9  webServer: {10  },11};12module.exports = {13  webServer: {14  },15};16const playwright = require('playwright');17(async () => {18  const browser = await playwright['chromium'].launch({ headless: false });19  const page = await browser.newPage();20  await page.screenshot({ path: 'google.png' });21  await browser.close();22})();23module.exports = {24  webServer: {25  },26};27module.exports = {28  webServer: {29  },30};31const playwright = require('playwright');32(async () => {33  const browser = await playwright['chromium'].launch({ headless: false });34  const page = await browser.newPage();35  await page.screenshot({ path: 'google.png' });36  await browser.close();37})();38module.exports = {39  webServer: {40  },41};42module.exports = {43  webServer: {44  },45};46const playwright = require('playwright');47(async () => {48  const browser = await playwright['chromium'].launch({ headless: false });

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch({4  });5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.waitForSelector('text=Chromium');8  await browser.close();9})();10const playwright = require('playwright');11(async () => {12  const browser = await playwright.chromium.launch({13  });14  const context = await browser.newContext();15  const page = await context.newPage();16  await page.waitForSelector('text=Chromium');17  await browser.close();18})();19const playwright = require('playwright');20(async () => {21  const browser = await playwright.chromium.launch({22  });23  const context = await browser.newContext();24  const page = await context.newPage();25  await page.waitForSelector('text=Chromium');26  await browser.close();27})();28const playwright = require('playwright');29(async () => {30  const browser = await playwright.chromium.launch({31  });32  const context = await browser.newContext();33  const page = await context.newPage();

Using AI Code Generation

1const { chromium } = require('playwright');2const browser = await chromium.launch();3const browserContext = await browser.newContext();4const page = await browserContext.newPage();5await page.screenshot({ path: 'google.png' });6await browser.close();7const { chromium } = require('playwright');8const browser = await chromium.launch({9});10const browserContext = await browser.newContext();11const page = await browserContext.newPage();12await page.screenshot({ path: 'google.png' });13await browser.close();

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch();4  const context = await browser.newContext();5  await context.close();6  await browser.close();7})();8    at Chromium._launch (/home/username/.cache/ms-playwright/chromium-818858/playwright/lib/server/browserType.js:114:13)9    at async Chromium.launch (/home/username/.cache/ms-playwright/chromium-818858/playwright/lib/server/browserType.js:60:9)10    at async Object.<anonymous> (/home/username/Desktop/test.js:4:17)

Using AI Code Generation

1const { chromium } = require('playwright');2const fs = require('fs');3const path = require('path');4const ensureCachedData = chromium._impl._browserFetcher._ensureCachedData.bind(chromium._impl._browserFetcher);5const browserFetcher = chromium._impl._browserFetcher;6const revisionInfo = browserFetcher.revisionInfo('869685');7async function run() {8  const revision = revisionInfo.revision;9  const browserDirectory = browserFetcher.revisionDirectory(revision);10  const browserExecutable = path.join(browserDirectory, revisionInfo.executablePath);11  const browserArgs = revisionInfo.args.slice();12  const browser = await chromium.launch({13  });14  const page = await browser.newPage();15  await page.screenshot({ path: 'google.png' });16  await browser.close();17}18async function main() {19  await chromium._impl._browserFetcher.download('869685');20  const { cachePath } = await ensureCachedData('869685');21  console.log(cachePath);22  await run();23}24main();

Using AI Code Generation

1const { ensureCachedData } = require('playwright-core/lib/server/cachedResources');2const { chromium } = require('playwright-core');3const browser = await chromium.launch({ headless: false });4const context = await browser.newContext();5const page = await context.newPage();6await browser.close();7const { ensureCachedData } = require('playwright-core/lib/server/cachedResources');8const { chromium } = require('playwright-core');9const browser = await chromium.launch({ headless: false });10const context = await browser.newContext();11const page = await context.newPage();12await browser.close();13const { ensureCachedData } = require('playwright-core/lib/server/cachedResources');14const { chromium } = require('playwright-core');15const browser = await chromium.launch({ headless: false });16const context = await browser.newContext();17const page = await context.newPage();18await browser.close();19const { ensureCachedData } = require('playwright-core/lib/server/cachedResources');20const { chromium } = require('playwright-core');21const browser = await chromium.launch({ headless: false });22const context = await browser.newContext();23const page = await context.newPage();24await browser.close();25const { ensureCachedData } = require('playwright-core/lib/server/cachedResources');26const { chromium } = require('playwright-core');27const browser = await chromium.launch({ headless: false });28const context = await browser.newContext();29const page = await context.newPage();30await browser.close();31const { ensureCached

Playwright tutorial

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