How to use evaluateExpressionAndWaitForSignals method in Playwright Internal

Best JavaScript code snippet using playwright-internal

javascript.js

Source:javascript.js Github

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...91 return evaluate(this._context, false92 /* returnByValue */93 , pageFunction, this, arg);94 }95 async evaluateExpressionAndWaitForSignals(expression, isFunction, returnByValue, arg) {96 const value = await evaluateExpressionAndWaitForSignals(this._context, returnByValue, expression, isFunction, this, arg);97 await this._context.doSlowMo();98 return value;99 }100 async getProperty(propertyName) {101 const objectHandle = await this.evaluateHandle((object, propertyName) => {102 const result = {103 __proto__: null104 };105 result[propertyName] = object[propertyName];106 return result;107 }, propertyName);108 const properties = await objectHandle.getProperties();109 const result = properties.get(propertyName);110 objectHandle.dispose();111 return result;112 }113 async getProperties() {114 if (!this._objectId) return new Map();115 return this._context._delegate.getProperties(this._context, this._objectId);116 }117 rawValue() {118 return this._value;119 }120 async jsonValue() {121 if (!this._objectId) return this._value;122 const utilityScript = await this._context.utilityScript();123 const script = `(utilityScript, ...args) => utilityScript.jsonValue(...args)`;124 return this._context._delegate.evaluateWithArguments(script, true, utilityScript, [true], [this._objectId]);125 }126 asElement() {127 return null;128 }129 dispose() {130 if (this._disposed) return;131 this._disposed = true;132 if (this._objectId) this._context._delegate.releaseHandle(this._objectId).catch(e => {});133 }134 toString() {135 return this._preview;136 }137 _setPreviewCallback(callback) {138 this._previewCallback = callback;139 }140 preview() {141 return this._preview;142 }143 _setPreview(preview) {144 this._preview = preview;145 if (this._previewCallback) this._previewCallback(preview);146 }147}148exports.JSHandle = JSHandle;149async function evaluate(context, returnByValue, pageFunction, ...args) {150 return evaluateExpression(context, returnByValue, String(pageFunction), typeof pageFunction === 'function', ...args);151}152async function evaluateExpression(context, returnByValue, expression, isFunction, ...args) {153 const utilityScript = await context.utilityScript();154 expression = normalizeEvaluationExpression(expression, isFunction);155 const handles = [];156 const toDispose = [];157 const pushHandle = handle => {158 handles.push(handle);159 return handles.length - 1;160 };161 args = args.map(arg => (0, _utilityScriptSerializers.serializeAsCallArgument)(arg, handle => {162 if (handle instanceof JSHandle) {163 if (!handle._objectId) return {164 fallThrough: handle._value165 };166 if (handle._disposed) throw new Error('JSHandle is disposed!');167 const adopted = context.adoptIfNeeded(handle);168 if (adopted === null) return {169 h: pushHandle(Promise.resolve(handle))170 };171 toDispose.push(adopted);172 return {173 h: pushHandle(adopted)174 };175 }176 return {177 fallThrough: handle178 };179 }));180 const utilityScriptObjectIds = [];181 for (const handle of await Promise.all(handles)) {182 if (handle._context !== context) throw new Error('JSHandles can be evaluated only in the context they were created!');183 utilityScriptObjectIds.push(handle._objectId);184 } // See UtilityScript for arguments.185 const utilityScriptValues = [isFunction, returnByValue, expression, args.length, ...args];186 const script = `(utilityScript, ...args) => utilityScript.evaluate(...args)`;187 try {188 return await context._delegate.evaluateWithArguments(script, returnByValue, utilityScript, utilityScriptValues, utilityScriptObjectIds);189 } finally {190 toDispose.map(handlePromise => handlePromise.then(handle => handle.dispose()));191 }192}193async function evaluateExpressionAndWaitForSignals(context, returnByValue, expression, isFunction, ...args) {194 return await context.waitForSignalsCreatedBy(() => evaluateExpression(context, returnByValue, expression, isFunction, ...args));195}196function parseUnserializableValue(unserializableValue) {197 if (unserializableValue === 'NaN') return NaN;198 if (unserializableValue === 'Infinity') return Infinity;199 if (unserializableValue === '-Infinity') return -Infinity;200 if (unserializableValue === '-0') return -0;201}202function normalizeEvaluationExpression(expression, isFunction) {203 expression = expression.trim();204 if (isFunction) {205 try {206 new Function('(' + expression + ')');207 } catch (e1) {...

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jsHandleDispatcher.js

Source:jsHandleDispatcher.js Github

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...36 }));37 }38 async evaluateExpression(params) {39 return {40 value: serializeResult(await this._object.evaluateExpressionAndWaitForSignals(params.expression, params.isFunction, true41 /* returnByValue */42 , parseArgument(params.arg)))43 };44 }45 async evaluateExpressionHandle(params) {46 const jsHandle = await this._object.evaluateExpressionAndWaitForSignals(params.expression, params.isFunction, false47 /* returnByValue */48 , parseArgument(params.arg));49 return {50 handle: _elementHandlerDispatcher.ElementHandleDispatcher.fromJSHandle(this._scope, jsHandle)51 };52 }53 async getProperty(params) {54 const jsHandle = await this._object.getProperty(params.name);55 return {56 handle: _elementHandlerDispatcher.ElementHandleDispatcher.fromJSHandle(this._scope, jsHandle)57 };58 }59 async getPropertyList() {60 const map = await this._object.getProperties();...

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electronDispatcher.js

Source:electronDispatcher.js Github

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...56 }57 async evaluateExpression(params) {58 const handle = await this._object._nodeElectronHandlePromise;59 return {60 value: (0, _jsHandleDispatcher.serializeResult)(await handle.evaluateExpressionAndWaitForSignals(params.expression, params.isFunction, true61 /* returnByValue */62 , (0, _jsHandleDispatcher.parseArgument)(params.arg)))63 };64 }65 async evaluateExpressionHandle(params) {66 const handle = await this._object._nodeElectronHandlePromise;67 const result = await handle.evaluateExpressionAndWaitForSignals(params.expression, params.isFunction, false68 /* returnByValue */69 , (0, _jsHandleDispatcher.parseArgument)(params.arg));70 return {71 handle: _elementHandlerDispatcher.ElementHandleDispatcher.fromJSHandle(this._scope, result)72 };73 }74 async close() {75 await this._object.close();76 }77}...

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Using AI Code Generation

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1const { evaluateExpressionAndWaitForSignals } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const { context } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');3const { page } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');4const expression = 'document.querySelector("button").click()';5const expression2 = 'document.querySelector("input").value = "Hello World"';6(async () => {7 await page.evaluate(expression);8 await page.evaluate(expression2);9 await evaluateExpressionAndWaitForSignals(expression);10})();11import { PlaywrightTestConfig } from '@playwright/test';12const config: PlaywrightTestConfig = {13 webServer: {14 },15 use: {16 viewport: { width: 1280, height: 720 },17 },18};19export default config;

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Using AI Code Generation

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1const playwright = require('playwright');2const { evaluateExpressionAndWaitForSignals } = playwright._internal;3(async () => {4 const browser = await playwright['chromium'].launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const expression = 'document.querySelector("div").innerText';8 const signals = ['load'];9 const result = await evaluateExpressionAndWaitForSignals(page, expression, signals);10 console.log(result);11 await browser.close();12})();

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Using AI Code Generation

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1const { evaluateExpressionAndWaitForSignals } = require('playwright/lib/server/chromium/crPage');2const { Page } = require('playwright/lib/server/chromium/crPage');3const { JSHandle } = require('playwright/lib/server/common/jsHandle');4const { CDPSession } = require('playwright/lib/protocol/channels');5const { Connection } = require('playwright/lib/protocol/connection');6const { helper } = require('playwright/lib/helper');7const { assert } = require('playwright/lib/helper');8const { debugError } = require('playwright/lib/helper');9const { debug } = require('playwright/lib/helper');10const page = new Page(new CDPSession(new Connection(), null, false), null);11const handle = new JSHandle(page, 'object', 'window', null);12const expression = 'window.location.reload()';13const isFunction = false;14const arg = undefined;15const returnByValue = false;16const awaitPromise = true;17const world = undefined;18const timeout = 30000;19const polling = 'raf';20const predicateBody = 'true';21const predicate = new Function('...args', `return (${predicateBody}).apply(null, args)`);22const noWaitAfter = false;23const signal = undefined;24(async () => {25 const result = await evaluateExpressionAndWaitForSignals(26 );27 console.log(result);28})();

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Using AI Code Generation

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1const { evaluateExpressionAndWaitForSignals } = require('playwright/lib/server/supplements/recorder/recorderSupplement');2const { signals } = require('playwright/lib/server/supplements/recorder/recorderSupplement');3const { firefox } = require('playwright/lib/server/supplements/recorder/recorderSupplement');4const { page } = require('playwright/lib/server/supplements/recorder/recorderSupplement');5const result = await evaluateExpressionAndWaitForSignals(page, 'document.querySelector("button")', signals.DOMContentLoaded);6if (result.error) {7 console.log('Error occured', result.error);8} else {9 console.log('Result', result.result);10}11const { evaluateExpressionAndWaitForSignals } = require('playwright/lib/server/supplements/recorder/recorderSupplement');12const { signals } = require('playwright/lib/server/supplements/recorder/recorderSupplement');13const { firefox } = require('playwright/lib/server/supplements/recorder/recorderSupplement');14const { page } = require('playwright/lib/server/supplements/recorder/recorderSupplement');15const { evaluateExpressionAndWaitForSignals } = require('playwright/lib/server/supplements/recorder/recorderSupplement');16const { signals } = require('playwright/lib/server/supplements/recorder/recorderSupplement');17const { firefox } = require('playwright/lib/server/supplements/recorder/recorderSupplement');18const { page } = require('playwright/lib/server/supplements/recorder/recorderSupplement');19const result = await evaluateExpressionAndWaitForSignals(page, 'document.querySelector("button")', signals.DOMContentLoaded);

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Using AI Code Generation

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1const { evaluateExpressionAndWaitForSignals } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const { Page } = require('playwright/lib/server/page.js');3const { Frame } = require('playwright/lib/server/frame.js');4const { JSHandle } = require('playwright/lib/server/jsHandle.js');5async function test() {6 const page = await browser.newPage();7 const expression = 'document.querySelector("div").textContent';8 const signals = {};9 const result = await evaluateExpressionAndWaitForSignals.call(page, expression, signals);10 console.log(result);11 await page.close();12}13test();

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Using AI Code Generation

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1const { evaluateExpressionAndWaitForSignals } = require('playwright/lib/server/evaluate');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 const result = await evaluateExpressionAndWaitForSignals(page, 'document.querySelector("text=Get started")', true, false, 10000);7 console.log(result);8 await browser.close();9})();10{11 result: {12 objectId: '{"injectedScriptId":1,"id":1}'13 },14 exceptionDetails: {15 stackTrace: {16 },17 exception: { type: 'object', subtype: 'error', className: 'Error', description: 'Error: Failed to find element matching selector "text=Get started"', objectId: '{"injectedScriptId":1,"id":2}' },18 },19}

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Using AI Code Generation

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1const { evaluateExpressionAndWaitForSignals } = require('playwright/lib/server/frames');2const { Page } = require('playwright/lib/server/page');3Page.prototype.evaluateExpressionAndWaitForSignals = evaluateExpressionAndWaitForSignals;4exports.evaluateExpressionAndWaitForSignals = async (page, expression, isFunction, arg) => {5 return await page.evaluateExpressionAndWaitForSignals(expression, isFunction, arg);6};7const { evaluateExpressionAndWaitForSignals } = require('./test');8const page = await browser.newPage();9const result = await evaluateExpressionAndWaitForSignals(page, '() => window.location.href', true);10console.log(result);11### `evaluateExpressionAndWaitForSignals(page, expression, isFunction, arg)`

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Using AI Code Generation

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1const {evaluateExpressionAndWaitForSignals} = require("playwright/lib/server/supplements/recorder/recorderSupplement");2(async () => {3 const page = await browser.newPage();4 const result = await evaluateExpressionAndWaitForSignals(page, 'document.querySelector("text=Get started")', 'click', 'click');5 console.log(result);6 await page.close();7})();

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