Cypress React Testing Library

























































Students at Cypress Creek can enroll in career-technical classes or choose from a variety of general education courses that transfer to universities. js are required. Aug 22, 2016 · If you’re developing React applications, then you know that the React community has been bursting with new ideas and tools over the last year. Nov 28, 2019 · Akka HTTP has a helpful testkit to test routes that make unit testing simple. …If you're new to testing, I suggest you start with Jest. json test scripts section with jest allowing me to run npm test. ), and, finally, deployment decisions. Let's set up an app to test. Frameworks like Cypress, puppeteer and webdriver are useful for running end-to-end tests. I’m going to add react-testing-library to an existing project to see how long it takes to setup and start writing a passing unit test. Cypress is fairly simple to configure, but it’s important to optimize our experience in testing Cypress. Jul 14, 2018 · Cypress is a tool that let you write and run your integration tests fast and easy. 9 things every React. Brooklyn Public Library (BPL) is an independent library system for the 2. js and in the browser, making asynchronous testing simple and fun. ReactJS presents graceful solutions to some of front-end programming’s most persistent issues. The key to a readable and accessible test suite lies in how you structure the functions. You can see Assessment Center closure dates and times below and on the Cypress College events calendar. Read more about this in Avoid the Test User. i18next - internationalisation (i18n) with javascript the easy way. We want your feedback! Note that we can't provide technical support on individual packages. It’s declarative: you tell it what state the component is in and React figures out how to render it based on that state. React is a JavaScript library for building user interfaces https://reactjs. It’s built on top of React DOM and React Test Utils (below) and focuses more on the DOM and what gets rendered, and is then able to interact with it. Testing without TCP connection should not be complicated. We're trying to make it just as easy to jumpstart React applications with a well-tested, thoughtful, and beautiful library of components. Jan 11, 2018 · Testing: Jest with Enzyme/React Testing Library and Cypress; The previous recommendations are opinionated. React Testing Library (react-testing-library) was probably the most important discovery in this whole process. js beginner should know React is a view library, Testing React components is still a bit of a tricky topic. New Feature include Fluent Design. react-testing-library. react-hooks-testing-library does not come bundled with a version of react or react-test-renderer to allow you to install the specific version you want to test against. If you set hidden to true elements that are normally excluded from the accessibility tree are considered for the query as well. Ionic is the app development platform for web developers. Head Up Tilt Table (HUTT) Test - Cardiovascular and Heart Rhythm Associates PA serving CYPRESS, Texas. Learn more. Time from install to first "real" test running was three hours (including a coffee break). You can see Assessment Center closure dates and times below and on the Cypress College events calendar. Water (H 2 O) can be both an acid and a base, depending on how you look at it. It's built on top of React DOM and React Test Utils (below) and focuses more on the DOM and what gets rendered, and is then able to interact with it. Additionally, test suites are run as part of continuous integration. What I do test is the behaviour of the component. It provides light utility functions on top of react-dom and react-dom/test-utils, in a way that encourages better testing practices. A Predictable State Container for JS Apps. Cypress doesn’t offer this feature for a few good reasons: Framework agnostic—it works with any frontend and backend; how you run your application is specific to the language and framework used. Maybe there is still an air of mistery around the test written with React Testing Library. Testing is not easy. React Navigation is extensible at every layer— you can write your own navigators or even replace the user-facing API. Unit-testing + E2E. It's quite easy to set up and has great developer experience. react-hooks-testing-library does not come bundled with a version of react or react-test-renderer to allow you to install the specific version you want to test against. For example, you're adding a new button to a page. IO, React Stack" by Ben Martin Smith We all know we should be testing our code, Unit testing is the first place to start that, or maybe not?. But with the help of right tools, writing tests can certainly be simpler and more fun. Here are a few great reasons to consider it: Isolated installation possible. Fast, easy and reliable testing for anything that runs in a browser. Learn about Cypress, a JavaScript-based web testing framework built on top of Mocha, for making asynchronous testing simple as an alternative to Selenium. College Ave. Issues with Enzyme. Before we talk about Enzyme and Jest, we should define a few terms: Test runner, assertion library, and mocking library. In this course, Creating Reusable React Components, you'll explore over 50 decisions to consider when designing, creating, and publishing reusable React components, including atomic design, documentation generation, styling, theming, testing, packaging, and publishing. Writing integration tests for a React app with the help of react-testing-library instead of or in addition to component unit tests can increase code maintainability without impairing development speed. End-to-end testing (E2E) was always a tedious task with testing frameworks from the past. Jun 12, 2019 · >Cypress is just one end-to-end testing framework that does all that clicking work for us and that’s what we’re going to look at in this post. Puppeteer — a Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol. Minimal setup required to use react-testing-library with Jest. I’m just saying testing implementation details is going to make your tests harder to maintain and unreliable. Testing React - Setup, Unit, Integration and E2E using Jest and Cypress (Feat. It works alongside the testing library Jest to provide React specific testing for snapshots, verifying DOM attributes or content, triggering click (or other) events, etc you would use it in place of Enzyme, which although very useful, can tend to be quite a bit more complicated given that it has 3 different ways. May 25, 2017 · This is why Tape rates highly in my book and one of the best JavaScript unit testing frameworks, as this allows you to focus more your efforts on your product and less on which tool to use. Testing React Hooks With Enzyme and React Testing Library (css-tricks. You can choose your own flexible framework for your ideal React application. You are now leaving the CFISD website. Learn about Cypress, a JavaScript-based web testing framework built on top of Mocha, for making asynchronous testing simple as an alternative to Selenium. js application running on Express. io, a free open-source testing tool, to write end-to-end tests for your React apps. Dec 26, 2018 · ReactTestUtil: ReactTestUtils makes it easy to test React components in the testing framework of your choice. Showing min. Examples & Tutorials. It’s fast, scalable, flexible, powerful, and has a robust developer community that’s rapidly growing. Cypress is a tool that let you write and run your integration tests fast and easy. io end to end testing tool. It's a validation library that aims to provide plugins for vanillaJS, vue, react, angular and svelte (at least for now, I guess). io is a JavaScript end-to-end testing tool which uses JavaScript as a scripting language to write the test scripts and to execute the test cases. Find out how our setup greatly improves feedback and avoid the pitfalls we’ve come across. We will look at ways we can use Cypress to not only create a test suite for our application, but help us write our tests and guide feature implementation. Water can even react with itself to form acids and bases. - [Instructor] As you build your app,…it's important to test your code throughout the process…to make sure it's doing what you intend. Cypress is just one end-to-end testing framework that does all that clicking work for us and that's what we're going to look at in this post. For those of you who don’t use Enzyme, like Facebook itself, the React team recommends using the react-testing-library to simulate user behavior in your tests. Whether there for casual studying, catching a view of the slope at sunset or pulling an all-nighter and watching the sunrise, students in the Uris Library Cocktail Lounge have recently noticed. Join Kent and learn how to test your code in-depth. When it comes to testing React components, there are two popular libraries that are often reached for: enzyme and react-testing-library. Their documentation has a high quality and their API is concise and clean. Test Driven Development with react-testing-library. I'm going to add react-testing-library to an existing project to see how long it takes to setup and start writing a passing unit test. Because react-testing-library mounts our components to document. In the past, our team struggled to find the line between too much test coverage and not enough. React Testing Library was created as a kind of replacement for Enzyme, and is often used in conjunction with Jest (though this is not required). You will get two new tabs in your Chrome DevTools: "⚛️ Components" and "⚛️ Profiler". Why Cypress. No need to configure anything: watch mode, source maps, and typings just work. - [Instructor] As you build your app,…it's important to test your code throughout the process…to make sure it's doing what you intend. Tests could also spy on some functions, and observe how other parts of the test interact with them. You are going to. React Testing Library has a different API than Cypress, but a lot of the test seems the same as the end-to-end test: we still enter a new message and click the send button. io for end-to-end testing of your applications. Additionally, test suites are run as part of continuous integration. react-hooks-testing-library does not come bundled with a version of react or react-test-renderer to allow you to install the specific version you want to test against. The following two examples use react-testing-library and Enzyme. Dec 09, 2019 · This won’t be a deep dive into unit testing React components but I will present some options for mocking external services. cypress-react-unit-test. React Developer Tools is a Chrome DevTools extension for the open-source React JavaScript library. Jest is widely compatible with React projects, supporting features like mocked modules and timers, and jsdom support. After you've configured your testing environment, it's time to write tests that evaluate your app's functionality. Jul 14, 2018 · Cypress is a tool that let you write and run your integration tests fast and easy. GraphQL) September 22, 2019. tests/testthat/test-utils. Because of its architectural design, Cypress provides (out of box) stable automation results for all modern web apps. The core decisions centered around audience and technology, dev environment, how to handle documentation, folder structure, styling and theming, automated testing and what types of testing frameworks to buy in (Enzyme, Jest, Cypress, etc. The render method is the bread and butter of RTL. This post describes what Test-Driven Development (TDD) is to me, the company I work for, the teams I work in/with, and my colleagues, in the context of building a React web application with React Testing Library and Jest. The React Testing Library is a very light-weight solution for testing React components. Developer Web Interface for ReactOS is a web tool to support the development of ReactOS. Cypress is fairly simple to configure, but it’s important to optimize our experience in testing Cypress. First: React itself doesn’t have any allegiance to any particular way of fetching data. Dec 14, 2015 · CodeHeaven react, testing, javascript Introduction. KendoReact was designed and built specifically for React development. There are many reasons why automated tests are useful but my favorite reason is: you're already testing. Citizenship Test is an important step in your U. com) Nov 29, 2019 In this tutorial, we will look at how to do that by making use of a to-do application built with hooks. Frontend checking != End-to-end checking. It allows you to inspect the React component hierarchies in the Chrome Developer Tools. Oh, and React Hooks got you all excited? If you rewrite that accordion component to use React hooks, the enzyme test fails terribly, while the React Testing Library test continues to work. Performing application security testing and validation automation; Requirements. The react-testing-library is a very light-weight solution for testing React components. How to Apply UI Test Automation in React Native Apps? React Native has changed the way we think about the mobile apps development process but didn’t change the main goal of software development teams—delivering the best quality products as soon as possible. End-to-end testing is fast and easy with Cypress. Cypress is our end-to-end testing tool and this offers a recipe for testing applications that use single sign on. x or React < 16. Here is the starting point. You are going to. This post is part of a Cypress series, you can see all post from the series in Testing with Cypress - lessons learned in a complete framework. Submitting this form will email your Webmaster with a request to unlock this account. Cypress works on any front-end framework or website. In our test, we call render from that library, passing in the usage of our Button component. But writing e2e tests that work every time is challenging. Both the React and Jest come from Facebook and is a major user of both. Cory concludes by showing how Cox integrated its React component library into a comprehensive and highly opinionated framework that utilizes React, Redux, its components, and over 100 packages that are all wrapped up into a single npm package for maintainability and easy updates. However, nowadays many people are using Cypress. This course details how to add user authentication to a Flask and React microservice. Running our test for the first time fails because we haven't actually written any UI yet!. I have found Cypress the best option to conduct these kinds of tests: How to test React components E2E with Cypress. react-testing-library. You are now leaving the CFISD website. …If you're new to testing, I suggest you start with Jest. Even E2E tests can't reliably test this kind of thing. This library provides React components and an API to format dates, numbers, and strings, including pluralization and handling translations. Submitting this form will email your Webmaster with a request to unlock this account. We discover that React Testing Library prefers the custom element attribute of 'data-testid' as opposed to 'id'. Introduction. This is no surprise as both React and Jest come from Facebook, which is a major user of. Validation can be async, every keystroke or onBlur. Because react-testing-library mounts our components to document. citizenship application. Read more about testing React with Cypress. The primary goal of dom-testing-library is to test just as your user uses the application. We're trying to make it just as easy to jumpstart React applications with a well-tested, thoughtful, and beautiful library of components. Cypress is a JavaScript End-to-End Testing. It's quite easy to set up and has great developer experience. Software Engineer, specializing in modular, maintainable full-stack applications with React/NodeJS. The more your tests resemble the way your software is used the more confidence they can give you. We discuss how get started with E2E testing with Cypress. Note: You will need to have window, window. A advanced mobile ToDo app for Android and iOS Maker is an advanced ToDo mobile application created with React Native and Expo framework. PSoC ‘n Pizza with SOLE(S) @ SJSU 3 weeks ago in Cypress University Alliance Blog: by Patrick Kane: Engineering Honor Society (Eta Kappa Nu) Student Leadership Conference 4 weeks ago in Cypress University Alliance Blog: by Patrick Kane. Additionally, as DOM Testing Library uses aria-query under the hood to find those elements by their default ARIA roles, you can find in their docs which HTML Elements with inherent roles are mapped to each role. Tests could also spy on some functions, and observe how other parts of the test interact with them. Cypress helps me write e2e tests only once, and run it for every plugin I write. Here are the steps I took get going: npm i jest react-testing-library jest-dom -D; Update package. React Native apps just are. The DOM Testing Library's primary guiding principle is: The more your tests resemble the way your software is used, the more confidence they can give you. Dates and times that the Assessment Center is open are subject to change. Cypress is an E2E testing tool designed specifically to be easy to use for frontend developers. A side-by-side code comparison between three of the most popular testing tools for React. For those of you who don't use Enzyme, like Facebook itself, the React team recommends using the react-testing-library to simulate user behavior in your tests. Tests make your code with more confident. It's a testing library, yes, but one that's built with one fundamental principle that separates it from the rest. You are going to. gh testing-library react-testing-library Log in. Nov 29, 2018 · Many E2E testing frameworks automatically start the application server and frontend server when you run your test. Examples code is located in cypress-testing-framework GitHub repository. Dates and times that the Assessment Center is open are subject to change. At this point, you should be able to run the React Native app. React and Vue. Upgrading from Enzyme 2. It's really freaking difficult to write objectively bad tests with React Testing Library because it's been built with best practices in mind. Backend is a Node. Let’s set up an app to test. Write your tests. This blog on Top 50 React Interview Questions is the perfect guide for you to learn all the concepts required to clear a React interview. I was using Azure DevOps for CI so I had to create a variable SKIP_PREFLIGHT_CHECK in my pipeline to make it work. After you've configured your testing environment, it's time to write tests that evaluate your app's functionality. jest-cli — a CLI runner for Jest. Here are the steps I took get going: npm i jest react-testing-library jest-dom -D; Update package. 8 was released to the public. Find Cypress Lakes High School test scores, student-teacher ratio, parent reviews and teacher stats. It also makes the task of asserting, manipulating and traversing your React Components output much easy. Tests could also spy on some functions, and observe how other parts of the test interact with them. Additionally, test suites are run as part of continuous integration. I tested a React app with Jest, Enzyme, Testing Library and Cypress. If you want to test your React app, you should largely rely on React testing toolset: Enzyme, Jest, React Testing Library, etc. Nov 20, 2019 · We finally presented our findings to the rest of the frontend organization, engineering management, architects, and product. Here is the Unit test using component react-testing-library, react-testing-hook-library and Cypress. io end to end testing tool. You are now leaving the CFISD website. Read Sliding Down the Testing Pyramid for more details about testing individual components by mounting them in the Cypress test runner's iframe. Cypress is a JavaScript End-to-End Testing. Although this post calls out React, Cypress is applicable to any JavaScript framework, and there's nothing specific about the setup, so it can be applied to any. This post describes what Test-Driven Development (TDD) is to me, the company I work for, the teams I work in/with, and my colleagues, in the context of building a React web application with React Testing Library and Jest. React Navigation is extensible at every layer— you can write your own navigators or even replace the user-facing API. So I was wondering if anyone knew other speed test libraries in React Native that I could use to get the upload and download speed from a server? Does anyone have any suggestions?. We have a checkbox with label component that we. We'll walk through a demonstration of using Cypress tests to drive your code for a higher-quality codebase. Software Engineering. Additionally, test suites are run as part of continuous integration. In computing, React (sometimes styled React. I have an input with a name ('Steve') as its value and I'm trying to find it with cypress like this: // In the compone. Puppeteer — a Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol. Otherwise, we assume that you’re already using Node. It also makes the task of asserting, manipulating and traversing your React Components output much easy. 8 was released to the public. Funds provided by CFISD Bond referendums are continuously strengthening the Cypress-Fairbanks ISD community. But we could go further: we could build the shared component using Angular Elements and then use it in the React application. This post is for people who want to get started with Test Driven Development (TDD) for React web applications. For those of you who don't use Enzyme, like Facebook itself, the React team recommends using the react-testing-library to simulate user behavior in your tests. I will demonstrate a simple test on my simple Calculator application. js or ReactJS) is a JavaScript library for building user interfaces. Tip: Check with the library authors to see if they provide any officially-supported testing infrastructures, such as fakes, that you can reliably depend on. 1 CPU Register Test ARM Cortex-M0+ has 19 core registers, which can be read and written. Gatsby Starters: Library. Why React over Angular 2?. Jun 12, 2019 · >Cypress is just one end-to-end testing framework that does all that clicking work for us and that’s what we’re going to look at in this post. from 'react-chartkick' import Highcharts from. This app working with Android and iOS. 11ac/b/g/n, BT/BLE for IoT. React-testing-library is a library developed by Kent C. Whether you want to have bookmarkable URLs for your web app or a composable way to navigate in React Native, React Router works wherever React is rendering--so take your pick!. Setup React Webpack development environment complete with Node and Babel including development, testing, and production workflows. We also have the official Vue Test Utils which provides more detailed guidance for custom setups. I recently discovered about it and decided to give it a try: I liked it so much that I decided to rewrite all my tests using it. Go beyond static sites: build blogs, ecommerce sites, full-blown apps, and more with Gatsby. Brooklyn Public Library (BPL) is an independent library system for the 2. GraphQL) September 22, 2019. The react-hooks-testing-library allows you to create a simple test harness for React hooks that handles running them within the body of a function component, as well as providing various useful. What is this? This package allows you to use Cypress test runner to unit test your React components with zero effort. These services provide opportunities for you to reach your educational goals, utilize quality support services, identify your needs, succeed academically, broaden your horizons, and learn more about yourself. centralizedRender. Modern React testing: Jest and React Testing Library; Why automate testing. Testing React Apps with Cypress When I was a junior dev I used to cringe at the thought of testing my apps. Jest is widely compatible with React projects, supporting features like mocked modules and timers, and jsdom support. Additionally, test suites are run as part of continuous integration. So, react-testing-library is used for unit/integration testing, and cypress is used for e2e testing. Get Started The more your tests resemble the way your software is used, the more confidence they can give you. Cypress is built on a new architecture and runs in the same run-loop as the application being tested. This post is part of a Cypress series, you can see all post from the series in Testing with Cypress - lessons learned in a complete framework. 1 CPU Register Test ARM Cortex-M0+ has 19 core registers, which can be read and written. Follow us on Instagram @CyWoodsFFABooster Page. We're trying to make it just as easy to jumpstart React applications with a well-tested, thoughtful, and beautiful library of components. Use DOM Testing Library to test any JS framework; Test Node. Follow me on Twitter, happy to take your suggestions on topics or improvements /Chris. Selenium and Cyprus are both open source, but Cypress also has a paid feature. Generally, the installed versions for react and react-test-renderer should have matching versions:. Pro egghead lesson on Enzyme / Jest / TypeScript. There’s nothing like shipping buggy code. I’m just saying testing implementation details is going to make your tests harder to maintain and unreliable. The Los Angeles Public Library serves the largest most diverse population of any library in the United States. During the citizenship interview, a US citizenship and immigration officer will ask the applicant ten(10) questions. E2E Testing a React/Node. React Testing Library is a small library to test React components, that makes applying best practices, we've learned in the first article, easy. When it comes to testing React components, there are two popular libraries that are often reached for: enzyme and react-testing-library. Choose one or more campuses and/or offices to filter the contact information below. You'll use React Testing Library and Pytest to test both apps, Formik to manage form state, and GitLab CI to deploy Docker images to Heroku. If you set hidden to true elements that are normally excluded from the accessibility tree are considered for the query as well. Jest is an open JavaScript testing library from Facebook. How is this different from Enzyme ? It is similar in functionality BUT runs the component in the real browser with full power of Cypress E2E test runner: live GUI, full API, screen recording, CI support, cross-platform. Join Kent and learn how to test your code in-depth. I want to see if I can write an easy lib for multiple tools, allowing reuse a lot, while changing the underlying technology. 0 was released to the public. Examples code is located in cypress-testing-framework GitHub repository. 20 November 2019 A fantastic credit card form with smooth and micro-interactions built with reactjs. Please try again later. I’m going to add react-testing-library to an existing project to see how long it takes to setup and start writing a passing unit test. You can change the maximum wait time. This is a pattern we're seeing more and more, as UI frameworks start to autogenerate IDs and classes, especially with the increase in css-in-js. Apr 29, 2019 · react-axe is a library that audits a React application and logs any accessibility issues to the Chrome DevTools console. The react-hooks-testing-library allows you to create a simple test harness for React hooks that handles running them within the body of a function component, as well as providing various useful. But I think now is the perfect time. I’m just saying testing implementation details is going to make your tests harder to maintain and unreliable. Nov 14, 2019 · The screenshot below shows how cypress-react-unit-test mounts a React component as "mini" web application. React-testing-library. The Cypress test runner is everything that you would do on your local computer. It’s really for any modern JavaScript library, but we’re going to integrate it with React in the examples. This tutorial uses a React application as an example to illustrate the testing framework, but you can apply the learnings to write integration tests for any web application. From setup to writing the first test. cypress-testing-library 🐅 Simple and complete custom Cypress commands and utilities that encourage good testing practices. This post is for people who want to get started with Test Driven Development (TDD) for React web applications. CFISD is not responsible for the accuracy or content of any of the information provided by this site, nor is it liable for any direct or indirect technical or system issues arising out of your access to or use of third party technologies or programs available through this site. An End to End test with Cypress covers the entire process of typing inside every field:. Dodds? There are many ways to write tests for React. Awesome React Native Meteor ★152 - An awesome list of resources for using Meteor and React Native together; first-born ★106 - A UI framework with pre-built components that render separately according to the underlying mobile platform. Get Started The more your tests resemble the way your software is used, the more confidence they can give you. With Enzyme, tests were always uncomfortably implementation-dependent. Ionic is the app development platform for web developers. React Fiber was to become the foundation of any future improvements and feature development of the React library. simple, flexible, fun. Sep 19, 2019 · This is a major advantage of using this library over other alternatives like enzyme and cypress. On February 16, 2019, React 16. Cypress is our end-to-end testing tool and this offers a recipe for testing applications that use single sign on. It's really for any modern JavaScript library, but we're going to integrate it with React in the examples. Let’s set up an app to test. But the tests can just as easily reach into the application and check if the internal state is updated correctly. This post is part of a Cypress series, you can see all post from the series in Testing with Cypress - lessons learned in a complete framework. We’ll configure the baseUrl to make it easier to visit our app and we’ll also move our test files to a folder called e2e to make it more clear what types of tests we want to write with Cypress. And now I will add end to end testing with Cypress! I will keep track of the progress via tags, starting with cypress-0, and incrementing the integer at each step. In this episode, the panelist talk with today's guest, Kent C. In the past, our team struggled to find the line between too much test coverage and not enough. This is a pattern we’re seeing more and more, as UI frameworks start to autogenerate IDs and classes, especially with the increase in css-in-js. io, a free open-source testing tool, to write end-to-end tests for your React apps. Dodds? There are many ways to write tests for React. April is Testing Time! Check out our agenda for the 17th April Meet up! Volkswagen Digital Solutions hub in Lisbon will be receiving us just before Easter time :) Talk 1 "End to End Testing Made Simple - Cypress. At this point you might be asking what is react-test-renderer? react-test-renderer is a library for rendering React components to pure JavaScript objects while create is a method from react-test-renderer for “mounting” the component. i18next - internationalisation (i18n) with javascript the easy way. Test runners. It also makes the task of asserting, manipulating and traversing your React Components output much easy. You can also test you component by changing the input arguments in…. Start with setting up your Create React App and Cypress following the blog code-create-react-app-v3-and-its-cypress-tests-using-typescript. Time from install to first "real" test running was three hours (including a coffee break). I'm using Cypress with Cypress Testing Library to test my React application. ReactDOM Tutorials Newsletter Contact Learn ProgrammingReactDOM helps you learn programming faster, by taking out the guess work. net and I tried to implement it into my React Native project, but haven't had much luck. E2e testing is known by its complexity, and often it is related to the top in the test pyramid [2]. I heard about this library some time ago, but I used to treat it as a niche topic and just another JavaScript thingy. Test Driven Development with react-testing-library. I'm in love with Cypress, an open source end-to-end testing framework based on NodeJS (not Selenium!). FM3 IEC60730 Class B Self-Test Library www. Dodds, which uses the DOM Testing Library as its core, enabling us to query DOM nodes and check what it contains as well as interact with them (firing events for example). fish and wildlife species are at risk of extinction in the coming decades.