Protractor with Typescript: Failed: Cannot read property 'presenceOf' of undefined

Question

I'm trying to wait for element presence using protractor, typescript.

Here are my code:

import { browser, by, element } from 'protractor';
import { protractor } from 'protractor/built/ptor';

export class LoginPage {

    title = element(by.css('my-page > h3'));

    async openMyPage() {
        await browser.get(browser.baseUrl);
        await browser.wait(protractor.ExpectedConditions.presenceOf(this.title), 5000,
            "Title does not appear during 5 seconds")
    }
}

It fails with error: Failed: Cannot read property 'presenceOf' of undefined.

Could someone help me to understand the reason of this? And how to fix? Thanks

you need to import ExpectedConditions like `import { ExpectedConditions} from 'protractor';` — Sudharsan Selvaraj, May 07 '20 at 16:39
thank you @SudharsanSelvaraj, your suggestion has fixed my issue. — khris, May 08 '20 at 11:49

score 0 · Answer 1 · answered May 07 '20 at 17:40

Try like this:

import { browser, by, element, ElementFinder, protractor } from 'protractor';

export class NameofClass {

public title: ElementFinder;

constructor() {

this.title = element(by.css('my-page > h3'));
}

async openMyPage() {
        await browser.get(browser.baseUrl);
        await browser.wait(protractor.ExpectedConditions.presenceOf(this.title), 5000,
            "Title does not appear during 5 seconds")
    }
}

Protractor with Typescript: Failed: Cannot read property 'presenceOf' of undefined

1 Answers1