Overview

Dive into an intermediate-level tutorial on integrating APIs with React by building a Hacker News API application. Learn to implement React memo, make API calls using Axios, style components, and conduct tests with React Testing Library. Explore the creation of a small React application that efficiently handles 500+ automated API calls, utilizing memo to prevent redundant network requests. Gain insights into using the Lighthouse browser extension for assessing accessibility and performance. Cover essential topics including scaffolding with create-react-app, refactoring exports, environment file modification, and API integration. Master component creation, state management with useEffect, styled components implementation, and infinite scrolling functionality. Delve into testing practices, including Jest coverage and fixture usage. Conclude by optimizing the application with React memo and evaluating its performance through Lighthouse.

Syllabus

) Introduction (what are we building?), tech stack talk.
) Using create-react-app as our base.
) Stripping out the files & content that we do not need.
) Refactoring to named exports.
) Modifying our .env file.
) Scaffolding our application.
) Looking at the Hacker News Api.
) Looking at all the news article Ids.
) Adding Axios using Yarn.
) Creating our hnApi.js service file.
) Adding the ability to get all story Ids from HN Api.
) Starting work on App.js.
) Adding useEffect to App.js to show all story Ids.
) Explaining how useEffect works.
) Creating our StoriesContainer.js container/component.
) Adding the ability to get stories from HN Api.
) Demonstrating the results that we receive from the HN Api.
) Creating our Story.js component file.
) Adding our Story component to the StoriesContainer component.
) Adding storyId as a prop to the Story.js component.
) Adding state to our Story.js component.
) Using useEffect to get a story in our Story.js component.
) Adding validation when getting stories.
) Dumping our stories onto the page.
) Building out the Story.js component with real data.
) Adding a selector for the story fields.
) Adding styled components.
) Building out our StoryStyles.js file using styled components.
) Adding a title to StoriesContainer.js.
) Adding a StoryWrapper to our Story.js component.
) More work on styling.
) Adding styling for StoryMeta.
) Adding styling for StoryMetaElements & styled component props.
) Adding our styled components to our Story.js component.
) Adding StoriesContainerStyles for more styling on the container.
) Looking at adding global styles (createGlobalStyle).
) Adding our container styles to StoriesContainer.js.
) Brief look at the React profiler.
) Quick run through as to what we have built so far.
) Making our time display properly using mapTime.js.
) Adding InfiniteScroll to our application (custom hook).
) Constants to be used by InfiniteScroll for per page items.
) Adding debounce functionality for scrolling.
) Adding a fixture folder with fixtures for tests.
) Testing! Lets test App.js.
) Adding react-testing-library to our application.
) Adding Jest coverage (good practise to do so).
) Testing the StoriesContainer.js.
) Testing the Story.js component.
) Testing the HnApi.js file.
) Looking at our coverage and more testing!.
) Collecting coverage from the right places.
) Looking at React memo.
) Adding memo to Story.js to prevent additional Api calls.
) Overview of what we have achieved!.
) Running our application through Lighthouse!.
) Thanks for watching, I hope you learned a lot!.