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How to use isAsyncPlaceholder method in Playwright Internal
Best JavaScript code snippet using playwright-internal
transition.js
Source:transition.js 
...66}67function isSameChild (child: VNode, oldChild: VNode): boolean {68 return oldChild.key === child.key && oldChild.tag === child.tag69}70const isNotTextNode = (c: VNode) => c.tag || isAsyncPlaceholder(c)71const isVShowDirective = d => d.name === 'show'72export default {73 name: 'transition',74 props: transitionProps,75 abstract: true,76 render (h: Function) {77 let children: any = this.$slots.default78 if (!children) {79 return80 }81 // filter out text nodes (possible whitespaces)82 children = children.filter(isNotTextNode)83 /* istanbul ignore if */84 if (!children.length) {85 return86 }87 // warn multiple elements88 if (process.env.NODE_ENV !== 'production' && children.length > 1) {89 warn(90 '<transition> can only be used on a single element. Use ' +91 '<transition-group> for lists.',92 this.$parent93 )94 }95 const mode: string = this.mode96 // warn invalid mode97 if (process.env.NODE_ENV !== 'production' &&98 mode && mode !== 'in-out' && mode !== 'out-in'99 ) {100 warn(101 'invalid <transition> mode: ' + mode,102 this.$parent103 )104 }105 const rawChild: VNode = children[0]106 // if this is a component root node and the component's107 // parent container node also has transition, skip.108 if (hasParentTransition(this.$vnode)) {109 return rawChild110 }111 // apply transition data to child112 // use getRealChild() to ignore abstract components e.g. keep-alive113 const child: ?VNode = getRealChild(rawChild)114 /* istanbul ignore if */115 if (!child) {116 return rawChild117 }118 if (this._leaving) {119 return placeholder(h, rawChild)120 }121 // ensure a key that is unique to the vnode type and to this transition122 // component instance. This key will be used to remove pending leaving nodes123 // during entering.124 const id: string = `__transition-${this._uid}-`125 child.key = child.key == null126 ? child.isComment127 ? id + 'comment'128 : id + child.tag129 : isPrimitive(child.key)130 ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)131 : child.key132 const data: Object = (child.data || (child.data = {})).transition = extractTransitionData(this)133 const oldRawChild: VNode = this._vnode134 const oldChild: VNode = getRealChild(oldRawChild)135 // mark v-show136 // so that the transition module can hand over the control to the directive137 if (child.data.directives && child.data.directives.some(isVShowDirective)) {138 child.data.show = true139 }140 if (141 oldChild &&142 oldChild.data &&143 !isSameChild(child, oldChild) &&144 !isAsyncPlaceholder(oldChild) &&145 // #6687 component root is a comment node146 !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)147 ) {148 // replace old child transition data with fresh one149 // important for dynamic transitions!150 const oldData: Object = oldChild.data.transition = extend({}, data)151 // handle transition mode152 if (mode === 'out-in') {153 // return placeholder node and queue update when leave finishes154 this._leaving = true155 mergeVNodeHook(oldData, 'afterLeave', () => {156 this._leaving = false157 this.$forceUpdate()158 })159 return placeholder(h, rawChild)160 } else if (mode === 'in-out') {161 if (isAsyncPlaceholder(child)) {162 return oldRawChild163 }164 let delayedLeave165 const performLeave = () => { delayedLeave() }166 mergeVNodeHook(data, 'afterEnter', performLeave)167 mergeVNodeHook(data, 'enterCancelled', performLeave)168 mergeVNodeHook(oldData, 'delayLeave', leave => { delayedLeave = leave })169 }170 }171 return rawChild172 }...
utils.js
Source:utils.js
...10function getFirstComponentChild (children) {11 if (Array.isArray(children)) {12 for (let i = 0; i < children.length; i++) {13 const c = children[i]14 if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {15 return c16 }17 }18 }19}20export {21 getFirstComponentChild,22 isAsyncPlaceholder,23 getComponentName,24 isDef...
get-first-component-child.js
Source:get-first-component-child.js
...4export function getFirstComponentChild (children: ?Array<VNode>): ?VNode {5 if (Array.isArray(children)) {6 for (let i = 0; i < children.length; i++) {7 const c = children[i]8 if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {9 return c10 }11 }12 }...
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.click('input[name="q"]');7 await page.keyboard.type('Hello World');8 await page.keyboard.press('Enter');9 await page.waitForNavigation();10 await page.screenshot({ path: `example.png` });11 await browser.close();12})();
Using AI Code Generation
1const { isAsyncPlaceholder } = require('playwright/lib/utils/stackTrace');2console.log(isAsyncPlaceholder(new Error().stack));3const test = require('./test');4test('My Test', async ({ page }) => {5 await page.evaluate(() => {6 throw new Error('Error');7 });8});
Using AI Code Generation
1const { isAsyncPlaceholder } = require('playwright/lib/utils/structs.js');2console.log(isAsyncPlaceholder({ __asyncPlaceholder: true }));3console.log(isAsyncPlaceholder({ __asyncPlaceholder: false }));4console.log(isAsyncPlaceholder({ __asyncPlaceholder: 'true' }));5console.log(isAsyncPlaceholder({ __asyncPlaceholder: 'false' }));6console.log(typeof { __asyncPlaceholder: true }.__asyncPlaceholder === 'boolean');7console.log(typeof { __asyncPlaceholder: false }.__asyncPlaceholder === 'boolean');8console.log(typeof { __asyncPlaceholder: 'true' }.__asyncPlaceholder === 'boolean');9console.log(typeof { __asyncPlaceholder: 'false' }.__asyncPlaceholder === 'boolean');
Using AI Code Generation
1const { isAsyncPlaceholder } = require('playwright/lib/utils/stackTrace');2const asyncPlaceholder = async () => {3 throw new Error('Async Placeholder');4};5(async () => {6 try {7 await asyncPlaceholder();8 } catch (e) {9 console.log(isAsyncPlaceholder(e));10 }11})();
Using AI Code Generation
1const { isAsyncPlaceholder } = require('playwright/lib/server/dom.js');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 await page.fill('input[name="q"]', 'Playwright');7 await page.click('input[type="submit"]');8 await page.waitForSelector('h3');9 const element = await page.$('h3');10 console.log(isAsyncPlaceholder(element));11 await browser.close();12})();13const { isAsyncPlaceholder } = require('playwright/lib/server/dom.js');14const { chromium } = require('playwright');15(async () => {16 const browser = await chromium.launch();17 const page = await browser.newPage();18 await page.fill('input[name="q"]', 'Playwright');19 await page.click('input[type="submit"]');20 await page.waitForSelector('h3');21 const element = await page.$('h3');22 console.log(isAsyncPlaceholder(element));23 await browser.close();24})();25Your name to display (optional):26Your name to display (optional):27Your name to display (optional):28Your name to display (optional):29const { chromium } = require('playwright');30(async () => {31 const browser = await chromium.launch();
Using AI Code Generation
1const { isAsyncPlaceholder } = require('playwright/lib/internal/asyncstack');2const { Page } = require('playwright/lib/page');3const { Playwright } = require('playwright/lib/server/playwright');4const { Browser } = require('playwright/lib/server/browser');5const { BrowserContext } = require('playwright/lib/server/browserContext');6const { Frame } = require('playwright/lib/server/frame');7const { ElementHandle } = require('playwright/lib/server/elementHandler');8const { JSHandle } = require('playwright/lib/server/javascript');9const page = new Page(new BrowserContext(new Browser(new Playwright()), null), null);10const frame = new Frame(page, null, null);11const element = new ElementHandle(frame, null, null);12const jsHandle = new JSHandle(element, null, null);13const isAsyncPlaceholderResult = isAsyncPlaceholder(jsHandle);14console.log("isAsyncPlaceholderResult: " + isAsyncPlaceholderResult);
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