Karim Aya

Karim Aya

1568964970

How to build a component monorepo library with React components.

The following article will guide you How to build a component monorepo library with React components. Develop, build, test, version, pack and publish each component …

Sharing components between different repositories and projects is very effective for code reuse. In the case of UI components, it’s also an effective way to make sure your UI stays consistent across different applications.

But, sharing components can also be a challenge as trying to publish each component would force us to split our repository into multiple repositories and publish each component individually. So, sometimes it’s better to keep all components in one single repository and still publish each individually. This architecture is often referred to as a multi-package repository or monorepo.

Multi-package monorepo for components

Great aid tools like Lerna can help automate some of the overhead around a multi-package monorepo, like versioning and publishing each package. However, it still requires a lot of overhead since each package still needs to be boilerplated and maintained just like it was a standalone repository.

When it comes to a multi-component library, this overhead can be heavy, so it’s rare to see such a library refactoring in order to publish each component.

In this post, we’ll see how you can get the same results without the overhead, by leveraging Bit’s ability to isolate, version and publish components as packages from an existing library- with zero refactoring or overhead.

Furthermore, you will be able to isolate the components in the repo so that you can build, test and version each of them separately in full isolation. Since Bit controls the relationships between the components, you can update a component and bump a version only for that component and the components depending on it. This means that not only you can publish individual packages from the repo, but you gain modular control over its development.

For any questions, please don’t hesitate to comment or reach out.

How it looks…

Here is a very nice open-source component library called React foundation*. *Using Bit, and with 0 refactoring at all, each of its components was published as a standalone package. You can view and install them in this collection.

Build, test, version and publish individual components in the repository

Bit’s open-source CLI-tool lets you virtualize the isolation of components in the repository. This is done using the <a href="https://docs.bit.dev/docs/add-and-isolate-components.html" target="_blank">bit add</a> command, which points Bit to paths in the repository where the components are located.

Develop each component in isolation

Bit will then automatically define and encapsulate every component with all its dependencies, turning it into a standalone unit that can be built, tested and run outside of the project in isolation. This process automatically creates a package.json file for every component, which will Bit will help manage and update upon detected changes to the component’s dependencies.

Zero build configurations

Since each component should be built and tested on its own, Bit lets you link a compiler and tester to all the components in your project’s workspace. You can also choose to link a testing environment to run each component’s unit-tests. By running the bit build and bit test commands, you can then build and test each component in full, true isolation from the rest of the project.

Version and update individual components and their dependants

Using the bit tag command you can version the components in the repo with semver rules. Now, each component is given a version that can be indecently bumped when there are changes to the component itself. No need to update a version for the button component when you only change an unrelated component like a slider. But, if you change a component that has other components depending on it, a Bit will prompt you to update the dependent components as well (it reads the package.json).

This means that any moment you can run bit status to learn which components are tracked and encapsulated in the repo, which are modified and needs a version update (or which has dependencies updated and needs to be updated too), and so on. And, obviously, there are symlinks too :)

Publish each component individually

When ready, you can publish all the components as individual packages, which can be separately consumed and updated in other projects.

The experience you get for developing the repository is that with 0 to very little refactoring you can instantly isolate, build, test, version and publish each component in the repository separately. When changes are made to a component, Bit lets you view, learn and control exactly which other components are affected and choose if you want to update all at once.


**You may also like: **React Tutorial: Building and Securing Your First App


Example workflow with Git-like commands

Once you install Bit and authenticate it to bit.dev. This means you can now start tracking components in your repository and publish each as a package.

Let’s assume the following library structure.

├── package.json
├── src
│   ├── components
│   │   ├── Accordion
│   │   │   ├── Accordion-spec.js
│   │   │   ├── Accordion.js
│   │   │   ├── Acordion.module.scss
│   │   │   ├── index.js
│   │   ├── Button
│   │   │   ├── Button-spec.js
│   │   │   ├── Button.js
│   │   │   ├── Button.module.scss
│   │   │   ├── index.js

In this case, we’d like to individually version and publish accordion and all other components in the src/components directory.

Using Bit, we can virtually encapsulate these components without having to refactor the repository at all, or boilerplate each of them as a package.

First, let’s initialize a Bit workspace for the repository and commit the newly created .bitmap file to Git so the two can be synced in harmony.

$ bit init$ git add .bitmap
$ git commit -am "initialized an emtpy bit workspace"
[master a4eddaa] bit initialized for project
 2 files changed, 11 insertions(+)
 create mode 100644 .bitmap

We’re now set to start versioning and publishing components.

The bit add command tells Bit to track components in a specific directory. It bundles all the files of each component as part of the component and will analyze the code of each component to define all its dependencies. You can see that Bit creates a package.json for each component that you can view as part of the component. In this example, let’s run it like this:

$ bit add src/components/*

Bit will write to its models all the data of the components (run bit show to view each component’s dependency graph, and bit status to learn that Bit successfully identified all files and dependencies for each component). If some are missing, you will need to bit add them separately.

Next, let’s define a compiler that can build the code into files that can run in other projects. You can find all the available compilers here. In this case (React library), let’s choose the React compiler and install it in the workspace.

$ bit import bit.envs/compilers/react

Bit will apply this compiler to all the components in the workspace, which means you save overhead for defining the configurations of each component.

Next, let’s set a version for every component. Versioning component independently is very useful when issuing updates to separate components, and for cross-repository component sharing and development (see below). For now, let’s set all components to version 0.0.1.

$ bit tag --all 0.0.1

Great! Our components are ready for export. Next, let’s bit export them to the bit.dev collection you’ve created earlier. Note that Bit is distributed and you can host components on any server, but bit.dev provides a registry from which you can install each component as a package. It also provides features for rendering, searching and collaborating over components.

$ bit export user-name.collection-name

And that’s it! You can now browse the collection, save examples for each component (which will also show up as snapshots in the collection) and- install each of them as an independent package with the NPM and **Yarn **clients from the bit.dev registry. No refactoring needed, no overhead.

Install and update individual components

Once your components are published, they become available in the bit.dev component hub, which also functions as a registry from which you can install components using package managers like npm and yarn.

The bit.dev component hub also provides discoverability for your components via a components search-engine and visual collections with preview snapshots. Each component’s example is rendered, and its API docs are auto-extracted and presented in the component page so you can learn how it works.

To install a component, just use the command in the installation pane in the component page.

*Example: *https://bit.dev/primefaces/primereact/chart

Note that if you haven’t installed Bit and run the bit login command, you will first need to configure bit.dev as a scoped npm registry. If you run bit login first, there’s no need to do that.

npm config set '@bit:registry' https://node.bit.dev

Then, just run the install command from the new project you’d like to consume the component in.

npm i @bit/primefaces.primereact.chart
# or
yarn add @bit/primefaces.primereact.chart

And that’s it. Your component is now individually installed as a package dependency in the new project and can be used like any other package. Since you only install the component you need, you avoided installing the whole library and prevented redundant weight and dependencies in the project.

Update single components individually or at bulk from any consuming project

Without having to publish or update the whole library, and without context switching!

When you publish many components from your library, people can choose and consume individual components in their projects. That’s useful, but in some cases, people will still need to make changes to the component before using it. It’s best to avoid context-switching for doing so.

Using Bit, you can bring the source-code of every component right into a new project and make the changes you need. Since Bit will still manage the “cloned” component, changes can be versioned, published and even updated back to the original project or other projects.

This means people can adopt the components without having to dive-in to the whole library to suggest a pull request, which might or might not be accepted.

To bring a component’s code into a different project and edit it, use the bit import command that appears in the same pane in the component page. Note that you should have Bit installed and a bit workspace initialized in the consuming repository to do that, so Bit can track and manage changes.

For example:

bit import primefaces.primereact/chart

Then, just make your changes, run bit tag again and bit export the new version. If you run bit status, bit will show you that the component is changed and which other components are affected by the changes too and should be updated. No need to update everything else, Bit lets you control the dependency graph of each component to easily update only what you need.

Conclusion

When you are building a component library and want to use its components in different projects or applications, you can leverage tooling like Bit to develop components in isolation in the library, while controlling their dependency graph and being able to build, test, version and publish each component.

By making them discoverable and letting other people install and even update individual components in their own projects, you increase the adoption of your components which helps to standardize your development across repositories and keep your UI consistent across apps for your users.

Feel free to visit Bit on GitHub, get started with the bit.dev platform, explore components in the community or visit the docs to learn more. Happy coding!

Learn more

JavaScript Basics Before You Learn React

Best 50 React Interview Questions for Frontend Developers in 2019

The Best React Extension for VS Code

Originally published by **Jonathan Saring **at blog.bitsrc.io

=======================================================

Thanks for reading :heart: If you liked this post, share it with all of your programming buddies! Follow me on Facebook | Twitter

#reactjs #javascript #web-development

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How to build a component monorepo library with React components.
Autumn  Blick

Autumn Blick

1598839687

How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

  • Performance: It delivers optimal performance.
  • Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
  • UI design: React Native enables you to design simple and responsive UI for your mobile app.
  • 3rd party plugins: This framework supports 3rd party plugins.
  • Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

  • Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
  • Near-native user experience: React Native provides several native components, and these are platform agnostic.
  • The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

#android app #frontend #ios app #mobile app development #benefits of react native #is react native good for mobile app development #native vs #pros and cons of react native #react mobile development #react native development #react native experience #react native framework #react native ios vs android #react native pros and cons #react native vs android #react native vs native #react native vs native performance #react vs native #why react native #why use react native

Aubrey  Price

Aubrey Price

1589722410

Build a simple React Native Pokemon app with React-Navigation

As we start learning new technologies we want to start building something or work on a simple project to get a better understanding of the technology. So, let’s build this simple app.
For this app, we will be using PokeApi to get our pokemon data, and also we will be using Hooks. I am using pokemondb for pokemon sprites. It’s just a personal preference you can use whatever you want.

#react-native #react-native-app #react-navigation #react-native-development #react

Mathew Rini

1615544450

How to Select and Hire the Best React JS and React Native Developers?

Since March 2020 reached 556 million monthly downloads have increased, It shows that React JS has been steadily growing. React.js also provides a desirable amount of pliancy and efficiency for developing innovative solutions with interactive user interfaces. It’s no surprise that an increasing number of businesses are adopting this technology. How do you select and recruit React.js developers who will propel your project forward? How much does a React developer make? We’ll bring you here all the details you need.

What is React.js?

Facebook built and maintains React.js, an open-source JavaScript library for designing development tools. React.js is used to create single-page applications (SPAs) that can be used in conjunction with React Native to develop native cross-platform apps.

React vs React Native

  • React Native is a platform that uses a collection of mobile-specific components provided by the React kit, while React.js is a JavaScript-based library.
  • React.js and React Native have similar syntax and workflows, but their implementation is quite different.
  • React Native is designed to create native mobile apps that are distinct from those created in Objective-C or Java. React, on the other hand, can be used to develop web apps, hybrid and mobile & desktop applications.
  • React Native, in essence, takes the same conceptual UI cornerstones as standard iOS and Android apps and assembles them using React.js syntax to create a rich mobile experience.

What is the Average React Developer Salary?

In the United States, the average React developer salary is $94,205 a year, or $30-$48 per hour, This is one of the highest among JavaScript developers. The starting salary for junior React.js developers is $60,510 per year, rising to $112,480 for senior roles.

* React.js Developer Salary by Country

  • United States- $120,000
  • Canada - $110,000
  • United Kingdom - $71,820
  • The Netherlands $49,095
  • Spain - $35,423.00
  • France - $44,284
  • Ukraine - $28,990
  • India - $9,843
  • Sweden - $55,173
  • Singapore - $43,801

In context of software developer wage rates, the United States continues to lead. In high-tech cities like San Francisco and New York, average React developer salaries will hit $98K and $114per year, overall.

However, the need for React.js and React Native developer is outpacing local labour markets. As a result, many businesses have difficulty locating and recruiting them locally.

It’s no surprise that for US and European companies looking for professional and budget engineers, offshore regions like India are becoming especially interesting. This area has a large number of app development companies, a good rate with quality, and a good pool of React.js front-end developers.

As per Linkedin, the country’s IT industry employs over a million React specialists. Furthermore, for the same or less money than hiring a React.js programmer locally, you may recruit someone with much expertise and a broader technical stack.

How to Hire React.js Developers?

  • Conduct thorough candidate research, including portfolios and areas of expertise.
  • Before you sit down with your interviewing panel, do some homework.
  • Examine the final outcome and hire the ideal candidate.

Why is React.js Popular?

React is a very strong framework. React.js makes use of a powerful synchronization method known as Virtual DOM, which compares the current page architecture to the expected page architecture and updates the appropriate components as long as the user input.

React is scalable. it utilises a single language, For server-client side, and mobile platform.

React is steady.React.js is completely adaptable, which means it seldom, if ever, updates the user interface. This enables legacy projects to be updated to the most new edition of React.js without having to change the codebase or make a few small changes.

React is adaptable. It can be conveniently paired with various state administrators (e.g., Redux, Flux, Alt or Reflux) and can be used to implement a number of architectural patterns.

Is there a market for React.js programmers?
The need for React.js developers is rising at an unparalleled rate. React.js is currently used by over one million websites around the world. React is used by Fortune 400+ businesses and popular companies such as Facebook, Twitter, Glassdoor and Cloudflare.

Final thoughts:

As you’ve seen, locating and Hire React js Developer and Hire React Native developer is a difficult challenge. You will have less challenges selecting the correct fit for your projects if you identify growing offshore locations (e.g. India) and take into consideration the details above.

If you want to make this process easier, You can visit our website for more, or else to write a email, we’ll help you to finding top rated React.js and React Native developers easier and with strives to create this operation

#hire-react-js-developer #hire-react-native-developer #react #react-native #react-js #hire-react-js-programmer

Kaustav Hazra

1603479480

 Component Life Cycle in React

Every component in React goes through a lifecycle of events. You can think is of going through a cycle of birth, growth, and death the same as the picture below.

The phases are:

  • Initialization — Starting the journey of your component
  • Mounting — Birth of your component
  • Update — Growth of your component
  • Unmount — Death of your component

1. Initialization

This is the phase in which the component is going to start its journey. The developer has to define the props and initial state of the component. This is usually done inside the constructor method (see below to understand the initialization phase better).

#react #react-lifecycle-method #react-course #react-for-beginner #react-js-tutorials

Anda Lacacima

Anda Lacacima

1594560120

How to Build React Component using React, React DOM and Babel

Now Let’s start discussing today’s topic.Today we’ll discuss about basic things you must know about React Library.It’s a famous front-end library which use in IT industry for business applications.Also day by day it’s getting updated.So, It will be much important for you to keep in touch with this library if you are willing/doing a_ job in IT industry _as it’s already a trending front-end technology now a days.So we’ll discuss it in details now and create your first React Component.

What is React ?

Simply, React is a JavaScript library that use to create _User Interfaces which runs on browsers _which was created by** Facebook._(one of the most popular ones, with over 100,000 stars on GitHub). It is the _view_ layer of an _MVC application**_ (Model View Controller)_

NOTE: React is not a framework.It’s a JavaScript library.

For a business application(client application) to be extremely successful it must be maintainable,manageable and_ re-usable.__Because when the business is expanding and when the customers asking for more improvement/changes the development team must be much responsible for making quick changes in the client application as soon as possible.That’s a more than 100% truth in _IT industry.So you must be a fast learner and a fast adapter when client requests rapid and complex changes in your business application.

Does React helps to overcome implementation complexity of client’s business applications

Yes.This is the most valuable and important thing which helps you when implementing a complex business application.React uses a concept called_ re-usable component__ which you may feel much comfortable with.It makes you re-use the same code in several places.Only thing you need to do is make changes to your props and __states.Using tiny components you could build your complex application in a simple way. __Also as this is a view part of the application it doesn’t depend(isolated with) on the _server state.

Components_ are like custom, reusable HTML elements, to quickly and efficiently build__ user interfaces_

_Now it’s time to try this with your own.I’m used _this online editor.It shows HTML, CSS, JavaScript sections clearly and separately.I recommend you to use it to make your first _React Component.

_We’ll create a simple HTML element which displays name and age of a __Person _using CSS styling as below(Image shows how a Person Component used to display information of two persons called Sanath and Pramod);

Image for post

person.figure

You only need both HTML,CSS files below to implement Person component using HTML and CSS.Use below code in editor to try this.

#components #react-dom #programming #react #babel