How to NOT render something in React (youtube.com)
Jan 21, 2020
We cover 5 ways to either not render an element or to have it hidden, and then we'll write tests to verify the presence or lack of presence of an element, and whether an element has a class or not using React Testing Library.
React Hooks: useContext (youtube.com)
Sep 18, 2019
Let's see how to combine useReducer and useContext to create a powerful pattern that allows us to encapsulate complicated nested state, and provide simple state values and action functions to any children of our Context Provider.
React Hooks: useReducer (youtube.com)
Sep 16, 2019
I know reducers from Redux, but something similar actually comes built in to React now with the useReducer hook. We'll see how to use it to clean up nested state.
How to use Autosuggest in React (youtube.com)
Aug 13, 2019
This video shows how to use the React Autosuggest library to show a dynamic list of countries which is loaded from a JSON endpoint. We'll use it within a Formik form and also cover how to tie Autosuggest into Formik and its validations.
Forms in React with Formik (youtube.com)
Aug 12, 2019
This video covers how to use Formik to create and manage forms in React. We'll cover getting user input, validating it with Yup, and then handling the form submission.
The useEffect hook and its lifecycle (youtube.com)
Feb 14, 2019
In this video we look at an issue I was having where state was being updated after the component had unmounted and the solution I came up with to solve that. What the heck is that 2nd argument for and did you know you can return a function from your useEffect function?
Intro to React Testing Library (youtube.com)
Jan 29, 2019
We'll investigate how to easily test our React components using the React Testing Library an alternative to Enzyme that works alongside Jest. This is an introduction, covering installation, snapshots, finding elements and verifying certain attributes on those elements.
Custom fetch hook that works with React Suspense (youtube.com)
Jan 22, 2019
In this video we'll dive deep into suspense, creating a custom hooked called useFetchSuspense that will make an AJAX call with fetch, playing nicely with Suspense to handle showing the loading fallback component while the call is being asynchronously executed.
Using Apollo Link State (youtube.com)
Dec 09, 2018
In this video we learn how to use the apollo-link-state library to Mutate and Query our local state. Link State is an alternative to using React's Component level state, MobX, or Redux... access and mutate your data in the same way you communicate with external GraphQL APIs.
Gatsby & TypeScript (youtube.com)
Dec 01, 2018
Learn how to set up Gatsby with TypeScript and how to replace PropTypes with TypeScript interfaces in both functional and class based components.
GraphQL with ApolloBoost Client (youtube.com)
Nov 02, 2018
Don't know where to begin with GraphQL in React? Begin by setting up a client with ApolloBoost and make a Query! In this video we pull my starred repositories from the GitHub GraphQL API.
What are React hooks? (youtube.com)
Oct 27, 2018
In this video we cover React hooks by refactoring a class based component into a functional component which takes advantage of the useState and useEffect hooks.
What is React memo? (youtube.com)
Oct 24, 2018
A quick video showing off the new React.memo feature which was just launched today in React v16.6.0. It'll make your functional components more performant as long as they are pure (same input - props - equals same output every time).
How to use GraphQL with React (youtube.com)
May 13, 2018
We'll take a look at how to use GraphQL with React using the Apollo GraphQL library and GitHub's new GraphQL API. We'll look at setting up our client, provider, and finally writing and executing our GraphQL query.
Mocking Axios in Jest + Testing Async Functions (youtube.com)
Apr 13, 2018
In this video we'll look at a function that makes an HTTP request using the axios library to the Unsplash API and figure out how we can test it using a fake/mock version of axios to avoid performing real HTTP requests. We will be using Jest and some mocking functionality that it provides.
Testing Asynchronous Components with Mocks in Jest (youtube.com)
Apr 06, 2018
In this video we'll cover how to test React components that contain asynchronous code using mocks in Jest. We'll refactor our component to make it more easily testable and mockable, allowing the test to run without making an actual AJAX request.
Error Boundaries and Render Props (youtube.com)
Apr 05, 2018
How to implement and test an error boundary in React. Error boundaries allow us to catch errors (and display friendly messages to our users) that occur during render in our components. We'll implement the error boundary using render props and see how to suppress an annoying error message during testing.
Getting started with testing in React (youtube.com)
Mar 29, 2018
In this video we talk about how to test components in React within create-react-app, how to configure Jest with Enzyme and Sinon, how to test with snapshots, simulate clicks, and interact with DOM elements through Enzyme.
Easy MobX and Redux Comparison (youtube.com)
Mar 24, 2018
We take an app from component state to MobX, then the same app from component state to Redux and talk about the differences. Async code in both MobX and Redux is covered!
Using Refs in React (youtube.com)
Feb 25, 2018
We'll go over the 3 ways to create refs in React: string refs (don't use!), callback refs, and the new React.createRef() approach.