Learn Npm, React-native and React-storybook

A skeleton loader is a popular UI pattern for loading screens: instead of a spinner, we show static or an animated placeholder for the information that is still loading. 

In this course, we go through 3 instrumental libraries for React Native - Linear Gradient, Masked View, and Reanimated 2 - and in the end, we use them in tandem to build a Skeleton Loader.

**Linear Gradient** [Expo](https://docs.expo.dev/versions/latest/sdk/linear-gradient/) | [Pure React Native](https://github.com/react-native-linear-gradient/react-native-linear-gradient)

**Masked View** [Expo](https://docs.expo.dev/versions/latest/sdk/masked-view/) | [Pure React Native](https://github.com/react-native-masked-view/masked-view)

**Reanimated 2** [Expo](https://docs.expo.dev/versions/latest/sdk/reanimated/) | [Pure React Native](https://github.com/software-mansion/react-native-reanimated/)

This course is built using an iOS simulator on plain React Native. Still, it will work on Expo and Android (you'll need to follow the relevant installation instructions available in the documentation).

The finished code for the skeleton loader (last 2 lessons) is available on [Expo Snack](https://snack.expo.dev/@kadikraman/animated-skeleton-loader).

React Native lets you build mobile apps using only JavaScript. It uses the same design as React, letting you compose a rich mobile UI from declarative components.

react-native

Building an Customisable Animated Skeleton Loader in React Native

How to create buttons in React Native depending on the level of desired customisability: the quick and simple Button, a more customisable Touchable, and the most customisable Pressable.

Button component is useful for quick prototyping.

TouchableOpacity is the most common way of creating buttons and other touchable areas, and is suitable for most use cases.

Pressable gives you the most control over the look and feel of your button, including customising the pressed state and text, as well as handling long presses separately from regular presses.

Creating Buttons in React Native with Three Levels of Customization

If you already know React, then React Native is a great way to build mobile apps for iOS and Android. Of course, web and mobile apps are very different to build — but this course serves as your guide.

In this course, we’ll build a mobile app from start to release with React Native for both iOS and Android. Prior React experience is required, but you don’t have to know anything about mobile development to participate.

Throughout the course, we’ll be building a “Restaurant Review” app. We’ll use all the standard mobile UI elements like text, images, form inputs, buttons, scroll views, and icons, and we’ll show several navigation techniques like push, modal, and tabs. The app will make HTTP API calls to a server and will store data on the device with AsyncStorage. Finally, we’ll specify a custom app icon and splash screen, deploy the app to a physical device, and prepare the app for release to the App Store and Play Store or for ad-hoc release.

Build a React Native Application for iOS and Android from Start to Finish

You can’t be everywhere at once. Neither can node packages. But with a utility called npx — included in npm v5.2 and later — you can interact and run with node modules even if they’re not downloaded locally. The same is true for gists and remote branches of GitHub. As long as npm installed, your work can be wherever you are.

This course from Elijah Manor unlocks the power of the npx utility. Over 17 minutes, we will examine the npx package runner and look through various scenarios where the tool is helpful when running node packages from the command line. You’ll learn to use npm to:

- test out various versions of a package
- run packages without globally installing
- run code directly from GitHub
- make working with packages much easier

npm is the package manager for JavaScript. Find, share, and reuse packages of code from hundreds of thousands of developers — and assemble them in powerful new ways.

Execute npm Package Binaries with the npx Package Runner

React makes it intuitive to build real-world web application. But in reality, you need to use a host of other services to get the app in front of real users. 

This course walks you through setup and implementation to get your cloud-based application up and running. 

You’ll learn to set up:
* a new project in AWS Amplify configured to your React app
* user authentication with Amazon Cognito 
* managed GraphQL with AWS AppSync
* image storage and retrieval with Amazon S3
* text translation via Lambda functions
* and finally, deployment of your application on AWS using Amazon S3

You’ll finish the course ready to quickly and easily deploy your serverless React application, so users can start using and enjoying it right away.

Building Serverless Web Applications with React & AWS Amplify

React Navigation makes the easy things easy and the hard things possible. This course will help you understand how to customize and use React Navigation for more complex navigation patterns.

You'll learn different ways to display content within the navigators, which demonstrates the built-in customizations within React Navigation. As well as learn how to interact with different UI components within React navigation, which will help you structure your application. 

Building off this, you'll learn how you can customize the default navigator behavior to provide a custom look and feel to your React Navigation application

To succeed in this course, you’ll want a basic understanding of the React Navigation API and how to use the default navigators.

Note: React Navigation has been updated to v2. This course was recorded on v1.x and the lesson code has been updated to reflect v2. The principles and patterns taught in the videos remain valid.

React Navigation for Native Mobile Applications

React Native Video is a community supported video element for React Native. It allows for remote loading of videos and also works with the React Native asset management system to load videos. Having a flexible video component is essential to developing and enhancing your application.
Like many React Native elements, the video element is very basic and doesn't ship with anything besides a flexible API. This allows you to develop the exact layout, controls, and custom overlays to match your application.

In this course we'll take a look at a basic setup. Then explore the different ways we can load and show videos. We'll show how to use a few of the custom callbacks to overlay errors and buffering elements. Because there are no controls shipped with `react-native-video` we'll show how to write custom video controls and animate them when the video has not been interacted with.

Finally we'll cover a few common paradigms found in the wild. Including repeating background cover videos, auto-playing videos when they scroll onto the screen and auto-stopping them when they are scrolled away from.

Fundamentals of React Native Video

In this course we'll explore how to create many popular animated concepts in applications across web and mobile applications. We'll look at both simple, complex, and subtle interactions that you can use to enhance your React Native application.


This course should empower you to look at an animation in an application, break down the effect, and rebuild it in your own application.


The ultimate goal is to show how using the basic Animated calls we can build out effective and complex animations that take your application to the next level.

Real World React Native Animations

npm is like a giant library of code building blocks. There are tons of these “blocks”, aka “packages” that we can compose together to build cool things. We can use packages by other developers, but we can also write and publish our own. 

In this course we will learn how to create, publish, and update our own packages. We will create a JavaScript utility module to filter out sensitive words from a string, including tests and development file watching. We will then cover publishing and updating our package. This same approach can be used to create and publish other types of packages too like components (React, Angular, Web Components etc.) and command line interfaces.

Publish JavaScript packages on npm

In this course we will introduce the topic of using npm scripts as a build tool. We will start simple and then continue to build a small website as we introduce new topics. By the end of the course, you'll know how to get started and what tools and techniques are needed for you to create your own set of build scripts.

How to Use npm Scripts as Your Build Tool

In this course we will learn and demonstrate the basic concepts of the React Native Animated API. We'll use Animated calls like `timing` and `spring` to animate style properties, and learn how to combine animations to create more complex effects. We'll learn about more advanced interactions like animations with touch events, interpolation, and flip animations. The ultimate goal is to gain an understanding of how to animate React Native Views, how you can apply them to many different types of styles, and how to enhance the experience in your application.

React is one of the web’s most popular frameworks for building JavaScript applications. 

If you know what you’re doing, React can drastically simplify how you build, use, and maintain code.

Whether you’re a React newbie or you’re ready for advanced techniques, you can level-up with egghead. Explore our in-depth courses, lessons, and community resources to build more powerful applications and crack open your career.

react

Animate React Native UI Elements

In this course we’ll explore getting started with a basic React Native application on both iOS and Android. We’ll learn about using React Native components, how to build custom components, how to layout an application using Flexbox, and how to style components.


We’ll also focus on how to use state to control components, how to persist information across application reloads with AsyncStorage, and how to inline edit in a ListView.

The ultimate goal is to gain an understanding of how to get started building simple React Native applications.

Build a React Native Todo Application

If you're a web developer who has been itching to get into native development, now is your chance. In this series we'll be talking all about React Native. React Native allows you to build native iOS and Android applications in JavaScript and React.js. 

Regardless of your experience with React, or even with iOS development, my hope is that this series will be beneficial to everyone who is starting out with React Native. We'll jump straight into developing with React Native by looking first at the ecosystem of building React Native apps - including  Xcode, the iPhone simulator, live reload, debugging, and more. 

Once we get our ecosystem set up and our hello world example running using ES5, we'll jump straight into building a fully functioning iPhone app which utilizes many of the best parts of developing with React Native all while covering React.js and refactor to ES6 along the way.

React Native Fundamentals

In React Native you utilize the NavigatorIOS component in order to implement routing. In this tutorial, we'll walk through the app we'll be building in this series as well as how to add routing to your app.

Set up Basic iOS Routing with React Native

In this lesson we'll use the ListView component to render a list of items that were entered. We'll show how to setup a ListView.DataSource and how to render custom rows with performance in mind.

Create a List of Items with a React Native ListView

A lot of the power behind npm scripts is creating custom scripts that are outside the basic set that npm natively understands. In this lesson we will install the ESLint node package, create a new eslint npm script, briefly discuss about environment variables and how npm knows where to find your binary, and then execute our custom script from the command line.

Create a custom npm script

We'll use the interpolate function from an `Animated.Value` to transition the background color of an `Animated.View`. We'll simultaneously translate the position with the same `Animated.Value`.

Animate Colors with React Native Interpolate

By using the `interpolate` function, the  `Animated.View` can be rotated using both degrees and radians.

Animate Rotation with React Native Interpolate

In this lesson we'll learn to use `backfaceVisibility` style property and `rotateX` to create a vertical flip animation, and `rotateY` to create a horizontal flip animation.

Create a Flip Card Animation with React Native

In this lesson we'll use `Animated.parallel` to animate multiple `Animated.timing` and `Animated.spring` animations at the same time.

Animate Multiple Animations at the Same Time with Animated.parallel

Often times you’ll have variations that you’ll want to make to your npm scripts and repeating yourself is inefficient and verbose. Instead you can create a base script and pass arguments into it from another script.

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