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How to use precacheChildNodes method in Playwright Internal
Best JavaScript code snippet using playwright-internal
ReactDOMComponentTree.js
Source:ReactDOMComponentTree.js 
...59 * the DOM nodes we see. To avoid this, ReactMultiChild calls60 * `prepareToManageChildren` before we change `_renderedChildren`, at which61 * time the container's child nodes are always cached (until it unmounts).62 */63function precacheChildNodes(inst, node) {64 if (inst._flags & Flags.hasCachedChildNodes) {65 return;66 }67 var children = inst._renderedChildren;68 var childNode = node.firstChild;69 outer: for (var name in children) {70 if (!children.hasOwnProperty(name)) {71 continue;72 }73 var childInst = children[name];74 var childID = getRenderedNativeOrTextFromComponent(childInst)._domID;75 if (childID == null) {76 // We're currently unmounting this child in ReactMultiChild; skip it.77 continue;78 }79 // We assume the child nodes are in the same order as the child instances.80 for (; childNode !== null; childNode = childNode.nextSibling) {81 if ((childNode.nodeType === 1 &&82 childNode.getAttribute(ATTR_NAME) === String(childID)) ||83 (childNode.nodeType === 8 &&84 childNode.nodeValue === ' react-text: ' + childID + ' ') ||85 (childNode.nodeType === 8 &&86 childNode.nodeValue === ' react-empty: ' + childID + ' ')) {87 precacheNode(childInst, childNode);88 continue outer;89 }90 }91 // We reached the end of the DOM children without finding an ID match.92 invariant(false, 'Unable to find element with ID %s.', childID);93 }94 inst._flags |= Flags.hasCachedChildNodes;95}96/**97 * Given a DOM node, return the closest ReactDOMComponent or98 * ReactDOMTextComponent instance ancestor.99 */100function getClosestInstanceFromNode(node) {101 if (node[internalInstanceKey]) {102 return node[internalInstanceKey];103 }104 // Walk up the tree until we find an ancestor whose instance we have cached.105 var parents = [];106 while (!node[internalInstanceKey]) {107 parents.push(node);108 if (node.parentNode) {109 node = node.parentNode;110 } else {111 // Top of the tree. This node must not be part of a React tree (or is112 // unmounted, potentially).113 return null;114 }115 }116 var closest;117 var inst;118 for (; node && (inst = node[internalInstanceKey]); node = parents.pop()) {119 closest = inst;120 if (parents.length) {121 precacheChildNodes(inst, node);122 }123 }124 return closest;125}126/**127 * Given a DOM node, return the ReactDOMComponent or ReactDOMTextComponent128 * instance, or null if the node was not rendered by this React.129 */130function getInstanceFromNode(node) {131 var inst = getClosestInstanceFromNode(node);132 if (inst != null && inst._nativeNode === node) {133 return inst;134 } else {135 return null;136 }137}138/**139 * Given a ReactDOMComponent or ReactDOMTextComponent, return the corresponding140 * DOM node.141 */142function getNodeFromInstance(inst) {143 // Without this first invariant, passing a non-DOM-component triggers the next144 // invariant for a missing parent, which is super confusing.145 invariant(146 inst._nativeNode !== undefined,147 'getNodeFromInstance: Invalid argument.'148 );149 if (inst._nativeNode) {150 return inst._nativeNode;151 }152 // Walk up the tree until we find an ancestor whose DOM node we have cached.153 var parents = [];154 while (!inst._nativeNode) {155 parents.push(inst);156 invariant(157 inst._nativeParent,158 'React DOM tree root should always have a node reference.'159 );160 inst = inst._nativeParent;161 }162 // Now parents contains each ancestor that does *not* have a cached native163 // node, and `inst` is the deepest ancestor that does.164 for (; parents.length; inst = parents.pop()) {165 precacheChildNodes(inst, inst._nativeNode);166 }167 return inst._nativeNode;168}169var ReactDOMComponentTree = {170 getClosestInstanceFromNode: getClosestInstanceFromNode,171 getInstanceFromNode: getInstanceFromNode,172 getNodeFromInstance: getNodeFromInstance,173 precacheChildNodes: precacheChildNodes,174 precacheNode: precacheNode,175 uncacheNode: uncacheNode,176};...
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.precacheChildNodes('input[name="q"]');7 await page.type('input[name="q"]', 'Hello');8 await page.screenshot({ path: 'google.png' });9 await browser.close();10})();
Using AI Code Generation
1const { chromium } = require("playwright");2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.precacheChildNodes("body");7 await page.screenshot({ path: "google.png" });8 await browser.close();9})();10const { chromium } = require("playwright");11const { precacheChildNodes } = require("@playwright/test-utils");12(async () => {13 const browser = await chromium.launch();14 const context = await browser.newContext();15 const page = await context.newPage();16 await precacheChildNodes(page, "body");17 await page.screenshot({ path: "google.png" });18 await browser.close();19})();20precacheChildNodes(page, selector, options);
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.precacheChildNodes('css=div');7 await page.waitForTimeout(5000);8 await browser.close();9})();
Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch({ headless: false, slowMo: 50 });4 const context = await browser.newContext();5 await context.tracing.start({ screenshots: true, snapshots: true });6 const page = await context.newPage();7 await page.precacheChildNodes('html');8 await page.tracing.stop({ path: 'trace.zip' });9 await browser.close();10})();11#### tracing.start(options)12#### tracing.stop(options)13#### tracing.path()14#### tracing.screenshots()15#### tracing.snapshots()16#### page.tracing.start(options)
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.precacheChildNodes();6 await page.screenshot({ path: `example.png` });7 await browser.close();8})();9const { chromium } = require('playwright');10(async () => {11 const browser = await chromium.launch();12 const page = await browser.newPage();13 const dom = await page.fetch();14 console.log(dom);15 await browser.close();16})();17const puppeteer = require('puppeteer');18(async () => {19 const browser = await puppeteer.launch();20 const page = await browser.newPage();21 const dom = await page.evaluateHandle(() => document);22 console.log(dom);23 await browser.close();24})();25const { chromium } = require('playwright');26(async () => {27 const browser = await chromium.launch();28 const page = await browser.newPage();29 const dom = await page.fetch();30 console.log(dom);31 await browser.close();32})();33const puppeteer = require('puppeteer');34(async () => {35 const browser = await puppeteer.launch();36 const page = await browser.newPage();37 const dom = await page.evaluateHandle(() => document);
Using AI Code Generation
1const { chromium, devices } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 const client = await page.context().newCDPSession(page);7 await client.send('DOM.enable');8 await client.send('DOM.precacheChildNodes', { nodeId: 1 });9 await browser.close();10})();
Using AI Code Generation
1const { chromium } = require('playwright');2const { precacheChildNodes } = require('playwright/lib/server/supplements/recorder/recorderSupplement');3const fs = require('fs');4(async () => {5 const browser = await chromium.launch();6 const context = await browser.newContext();7 const page = await context.newPage();8 await precacheChildNodes(page);9 const html = await page.content();10 fs.writeFileSync('test.html', html);11 await browser.close();12})();
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