Learn Jspm, Pm2 and React-storybook

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.

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Storybook is a UI component development environment for React, Vue, and Angular. With that, you can develop UI components without running your app.

Here I show how best to configure a React Storybook to use [Typescript](/q/typescript) (with TSX). This lets you write your reusable components with maximal type safety. Please see the provided code for the full source.

Configure React Storybook for use with Typescript

[Storybook](https://storybook.js.org/) is a framework that allows you to develop components in isolation. It is ideal for a variety of use cases, most commonly when you're building some shared component toolkit. As such, Nx comes with a dedicated package `@nrwl/storybook` that adds a series of useful code generators to add storybook to an existing React library, but also to automatically generate stories and more.

Use Storybook to Develop React Components in Nx

JavaScript® (often shortened to JS) is a lightweight, interpreted, object-oriented language with first-class functions, most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic, and supports object-oriented, imperative, and functional programming styles.

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[Nx](https://nx.dev) combines a lot of the best tools on the market, integrates them, and provides tooling to provide the best possible developer experience. One such pair is [Cypress](https://www.cypress.io/) and [Storybook](https://storybook.js.org/). Storybook allows developing components in isolation, which is also a great basis for testing components, which is where Cypress shines.
In this lesson, we're exploring some of the `@nrwl/storybook` code generation utilities that allow you to not only configure Storybook for a React application but automatically also set up a Cypress test configuration for it along with some spec files generated from the Storybook stories.

Use Cypress and Storybook to test your React Components in Isolation

In this lesson, we show how to setup React Storybook into an existing React project. We’ll go through common configuration files and how to adjust them.

Add React Storybook to a Project 

Components trigger actions via function props to notify of events that occur within the Component. We can inspect those events using React Storybook.

Inspect Component Events with React Storybook



[React Storybook](https://github.com/kadirahq/react-storybook) is a UI component development environment for React.
With that, you can develop UI components without running your app.

Here I show how to get started with React Storybook.
For more information, have a look at our [documentation](https://getstorybook.io/docs).

Getting Started with React Storybook

React Component stories can be dynamically loaded into React Storybook instead of doing it manually every time.

Load React Storybook Stories Dynamically

PM2 is a production process manager for Node.js applications with a built-in load balancer. It allows you to keep applications alive forever, to reload them without downtime and to facilitate common system admin tasks.

This video shows how to enable features in your pm2 config file that allow you to prevent runaway apps from bringing your server down. Setting max memory used, number of running processes allowed and maximum restart attempts are all covered.

Controlling runaway apps using pm2

In this video, you will learn how to pass environment variables to your node.js app using the pm2 config file. This is useful for setting options inside your app such as production or development.

Passing environment variables to node.js using pm2

jspm is a package manager for the SystemJS universal module loader, built on top of the dynamic ES6 module loader.

jspm

JSPM can handle installed packages, transpiling ES6, and bundling all from the command-line. This video gives a quick overview of install JSPM, installing packages with JSPM, writing a very simple app in ES6 that uses those packages, then bundling up for production.

An Introduction to JSPM (JavaScript Package Manager)

In this video, learn how to automatically restart your node.js app using pm2 when the code for your app changes. You will also learn how to exclude files and directories from restarting your app (such as static assets, css, images, etc.).

Restarting your node.js app on code change using pm2

Story is the smallest unit of React Storybook. A story describes a React Component, and its various states and variations. Stories can describe complex components with dynamic properties and data loaded from a service. In this lesson we will write our first React Storybook story.

Write the First React Storybook Story

React Storybook allows for easy snapshot testing integration with Facebook's Jest testing framework. Snapshot testing allows you to capture the state of your UI and then notify you when that UI has been altered. We can easily create and update snapshots with Storybook!





Jest Snapshot Testing with React Storybook

Storybook is a UI component development environment for React, Vue, and Angular. With that, you can develop UI components without running your app.

Here I show how to set up Storybook to display React components from scratch.

Set up Storybook for React from Scratch

Vue (pronounced /vjuː/, like view) is a progressive framework for building user interfaces. Unlike other monolithic frameworks, Vue is designed from the ground up to be incrementally adoptable. The core library is focused on the view layer only, and is very easy to pick up and integrate with other libraries or existing projects. On the other hand, Vue is also perfectly capable of powering sophisticated Single-Page Applications when used in combination with modern tooling and supporting libraries.

In this lesson we'll go through the process of setting up Storybook for Vue. We'll use Vue CLI to create a new Vue application and Storybook CLI to setup some initial stories and config. Storybook can help you develop UI components in an isolated area without running your full application.

*Additional Resources*
https://medium.com/storybookjs/introducing-storybook-for-vue-940f222541c5
https://storybook.js.org/basics/guide-vue/

 Getting Started With Storybook for Vue

Storybook is a UI component development environment for React, Vue, and Angular. With that, you can develop UI components without running your app.

Here I show the best configuration for React Storybook, and walk through adding your very first React Component and Story to your Storybook.

Add your first React Story to Storybook

Storybook is a UI component development environment for React, Vue, and Angular. With that, you can develop UI components without running your app.

Here I show how to add a landing/welcome page to your Storybook, so that first-time viewers get to read a message from you or have some orientation around the structure of the Storybook you are building. We also introduce the idea of sequential additions to your Storybook config so you can get a sense of how to modify it for your own needs.

Add a Welcome Page with Sequential Stories to a React Storybook

Storybook is a UI component development environment for React, Vue, and Angular. With that, you can develop UI components without running your app.

Storybook has a rich Addons ecosystem that really adds a lot to the developer experience. Here I show how to set up the JSX Addon in Storybook to display the code behind React components. The juxtaposition of code and visual display can be very effective documentation for any users of your components.

Display the JSX of a React Storybook Story with the JSX Addon

Storybook is a UI component development environment for React, Vue, and Angular. With that, you can develop UI components without running your app.

Here I show how to set up the Info addon to make your Storybook stories into interactive documentation, including the best way to style the Info addon to your heart's desires.

Apply Style to a React StoryBook with the Info addon to Turn Stories into Documentation

Storybook is a UI component development environment for React, Vue, and Angular. With that, you can develop UI components without running your app.

Here I show how to set up the Knobs decorator in Storybook to make your Storybook stories infinitely interactive based on their props, and not just your predefined Stories.

Create Interactive Storybook Stories with the Knobs Decorator

Storybook is a UI component development environment for React, Vue, and Angular. With that, you can develop UI components without running your app.

In this short video I show how to set up the `react-docgen-typescript-webpack-plugin`, a neat plugin that leverages the types you are -already- writing for Typescript to autogenerate documentation. 

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