Puppeteer wrapper

Wrapper around Puppeteer library to make it easier to use.

Puppeteer is a Node library which provides a high-level API to control Chrome or Chromium over the DevTools Protocol. Puppeteer runs headless by default, but can be configured to run full (non-headless) Chrome or Chromium.

Installing

Install puppeteer wrapper from npm

npm i puppeteer @touch4it/puppeteer

or

npm i puppeteer-core @touch4it/puppeteer

In order to use it you will need to require it first

const puppeteerT4IT = require('@touch4it/puppeteer');

Documentation

Get Puppeteer instance

Returns Puppeteer library.

const puppeteer = puppeteerT4IT.getPuppeteer();

Change default TIMEOUT and SCREENSHOT_DIRECTORY vars

If you want to use different timeout and screenshot directory, you can use init function to change these variables. You can pass following arguments into this function:

• timeout Default request timeout which will be use in the module (defaults to 30000 ms)
• screenshotDirectory Name of the directory where screenshots will be stored (defaults to screenshots/)

puppeteerT4IT.init(5000, 'some_other_dir/');

Launch new browser instance

You can pass option object as argument, which can contain all available option for launch() function

Returns new Browser instance.

let browser = await puppeteerT4IT.launch({ headless: false });

Get new page instance

You can pass following arguments into this function:

• browser A Browser instance that you have created with puppeteer.launch()
• authenticationData Object containing "username" and "password" authentication keys for basic auth when the page is launched

Returns new Page instance.

let page = await puppeteerT4IT.getPage(browser, { username: 'User', password: '123abc' });

Navigate to web page and test status code

You can pass following arguments into this function:

• page Puppeteer page object
• url URL to be redirected to
• statusCode awaited HTTP response status code (defaults to 200)

Returns page

await puppeteerT4IT.goto(page, baseUrl);

Timeout execution for specified amount of milliseconds

You can pass following arguments into this function:

• ms time in ms to wait

Returns empty Promise

await puppeteerT4IT.sleep(500);

Make screenshots from web page

You can pass following arguments into this function:

• page Puppeteer page object
• width Screen width
• height Screen height
• pageName Web page name under which a screenshot will be stored
• deviceScaleFactor Specify device scale factor (Defaults to 1)
• isMobile isMobile Whether the meta viewport tag is taken into account (defaults to false)
• delay Time in ms to wait after reload (defaults to 0)
• beforeAction Function to be called before screenshot is made (defaults to null)
• beforeActionParameters beforeAction parameters (defaults to [])

Returns empty Promise

await puppeteerT4IT.screenshotPage(page, 360, 640, 'frontpage', 1, true, delay, clickOnButton, ['.navigation-element--class']);

Make screenshots in most popular screen resolutions

You can pass following arguments into this function:

• page Puppeteer page object
• name Web page name under which screenshots will be stored
• delay Time in ms to wait after reload (defaults to 0)
• beforeAction Function to be called before screenshot is made (defaults to null)
• beforeActionParameters beforeAction parameters (defaults to [])

Returns empty Promise

await puppeteerT4IT.screenshotMultipleResolutions(page, 'projects', 4000);

Click on element

You can pass following arguments into this function:

• page Puppeteer page object
• querySelector Page element selector
• delay Time in ms to wait after reload (defaults to 0)

Returns empty Promise

await puppeteerT4IT.click(page, '.class', 500);

Tap on element

You can pass following arguments into this function:

• page Puppeteer page object
• querySelector Page element selector
• delay Time in ms to wait after reload (defaults to 0)

Returns empty Promise

await puppeteerT4IT.tapOnElement(page, '.class', 500);

Get href link from element

You can pass following arguments into this function:

• page Puppeteer page object
• querySelector Page element selector

Returns link href from element

await puppeteerT4IT.getLinkByQuerySelector(page, '.class');

Get href link hostname from element

You can pass following arguments into this function:

• page Puppeteer page object
• querySelector Page element selector

It returns link hostname from element.

await puppeteerT4IT.getHostnameByQuerySelector(page, '.class');

Get value from element

You can pass following arguments into this function:

• page Puppeteer page object
• querySelector Page element selector

Returns value of element

await puppeteerT4IT.getValueByQuerySelector(page, '.class');

License

This project is licensed under the MIT License - see the LICENSE file for details.

Changelog

Project updates are tracked in a CHANGELOG file