React + Webpack + TypeScript Project Setup

React + Webpack + TypeScript Project Setup: Let’s get React and TypeScript setup, its a lot easier than you think!

TL;DR: Can’t possibly summarize this in a single sentence but there is a repo that you can fork which has all of the boilerplate setup.

Let’s Get Started!!

Firstly you will need to create a directory/repo for your project, once you have done this you will need to initialize the project. Run one of the following snippets in your terminal to do so:

//If you want to use npm 
npm init
//If you want to use yarn 🧶
yarn init

Just follow along with the prompts in the terminal, once the initialization is complete you should see a package.json file in the directory. If you don’t know what a package.json file is then this post is not for you, I would recommend that you play with React and npm more before continuing.

Add Some Dependencies 😵

The 3 dependencies that you’ll need are react, react-dom, and typescript which are all pretty straightforward, but you’ll also need 24 devDependencies.

To install the 3 dependencies run the following

//Optionally you can install styled-components
//npm
npm install react react-dom typescript
//yarn 🧶
yarn add react react-dom typescript

For this post, we’ll be using babel so you’ll need to install babel-loader, a couple of babel plugins, and some babel presets.

Something to note is that as of babel v7, babel ships with Typescript support so we don’t need a separate TypeScript loader 😃.

• babel-loader
• @babel/plugin-external-helpers
• @babel/plugin-proposal-class-properties
• @babel/plugin-proposal-object-rest-spread
• @babel/preset-env
• @babel/preset-react
• @babel/preset-typescript
• babel-plugin-styled-components (this one is optional, only install it if you are using styled-components 💅)

//npm
npm install babel-loader @babel/plugin-external-helpers @babel/plugin-proposal-class-properties @babel/plugin-proposal-object-rest-spread @babel/preset-env @babel/preset-react @babel/preset-typescript --save-dev
//yarn 🧶
yarn add babel-loader @babel/plugin-external-helpers @babel/plugin-proposal-class-properties @babel/plugin-proposal-object-rest-spread @babel/preset-env @babel/preset-react @babel/preset-typescript -D

Ok on to installing the testing specific devDependencies. We’ll be using Jest and Enzyme along with some enzyme specific dependencies.

• babel-loader
• @babel/plugin-external-helpers
• @babel/plugin-proposal-class-properties
• @babel/plugin-proposal-object-rest-spread
• @babel/preset-env
• @babel/preset-react
• @babel/preset-typescript
• babel-plugin-styled-components (this one is optional, only install it if you are using styled-components 💅)

//npm
npm install enzyme enzyme-adapter-react-16 enzyme-to-json jest ts-jest --save-dev
//yarn 🧶
yarn add enzyme enzyme-adapter-react-16 enzyme-to-json jest ts-jest -D

Ok just a couple more dependencies, obviously we need Webpack, Wepback plugins, and the types for the various dependencies

• babel-loader
• @babel/plugin-external-helpers
• @babel/plugin-proposal-class-properties
• @babel/plugin-proposal-object-rest-spread
• @babel/preset-env
• @babel/preset-react
• @babel/preset-typescript
• babel-plugin-styled-components (this one is optional, only install it if you are using styled-components 💅)

//npm
npm install @types/enzyme @types/enzyme-adapter-react-16 @types/jest @types/react @types/react-dom html-webpack-plugin source-map-loader webpack webpack-cli webpack-dev-server webpack-hot-middleware --save-dev
//yarn 🧶
yarn add @types/enzyme @types/enzyme-adapter-react-16 @types/jest @types/react @types/react-dom html-webpack-plugin source-map-loader webpack webpack-cli webpack-dev-server webpack-hot-middleware -D

Oof ok we’re done with the dependencies finally… 🎊

Webpack Config 🛠

You should be somewhat familiar with Webpack configs but all we’re doing is checking the mode and adjusting the config based on the environment mode (production or development). Since I’m using styled-components the only loader I need is babel-loader with the various plugins and presets, but if you have CSS in your project you’ll need a CSS loader.

const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = (env, { mode = 'development' }) => {
  const config = {
    mode,
    entry: {
      app: './src/index.tsx',
    },
    devtool: '',
    resolve: {
      extensions: ['.js', '.jsx', '.ts', '.tsx'],
    },
    module: {
      rules: [
        {
          test: /\.(js|jsx|tsx|ts)$/,
          exclude: /node_modules/,
          use: {
            loader: 'babel-loader',
            options: {
              presets: [
                '@babel/preset-env',
                '@babel/preset-react',
                '@babel/preset-typescript',
              ],
              plugins: [
                '@babel/plugin-external-helpers',
                'babel-plugin-styled-components',
                '@babel/plugin-proposal-class-properties',
                '@babel/plugin-proposal-object-rest-spread',
              ],
            },
          },
        },
      ],
    },
    output: {
      path: path.resolve(__dirname, 'dist'),
      filename: 'index.js',
      libraryTarget: 'umd',
      publicPath: '/dist/',
      umdNamedDefine: true,
    },
    optimization: {
      mangleWasmImports: true,
      mergeDuplicateChunks: true,
      minimize: true,
      nodeEnv: 'production',
    },
    plugins: [
      new webpack.DefinePlugin({
        'process.env.NODE_ENV': '"production"',
      }),
    ],
  };

  /**
   * If in development mode adjust the config accordingly
   */
  if (mode === 'development') {
    config.devtool = 'source-map';
    config.output = {
      filename: '[name]/index.js',
    };
    config.module.rules.push({
      loader: 'source-map-loader',
      test: /\.js$/,
      exclude: /node_modules/,
      enforce: 'pre',
    });
    config.plugins = [
      new webpack.DefinePlugin({
        'process.env.NODE_ENV': '"development"',
      }),
      new HtmlWebpackPlugin({
        filename: path.resolve(__dirname, 'dist/index.html'),
        template: path.resolve(__dirname, 'src', 'index.html'),
      }),
      new webpack.HotModuleReplacementPlugin(),
    ];
    config.devServer = {
      contentBase: path.resolve(__dirname, 'dist'),
      publicPath: '/',
      stats: {
        colors: true,
        hash: false,
        version: false,
        timings: true,
        assets: true,
        chunks: false,
        modules: false,
        reasons: false,
        children: false,
        source: false,
        errors: true,
        errorDetails: true,
        warnings: false,
        publicPath: false,
      },
    };
    config.optimization = {
      mangleWasmImports: true,
      mergeDuplicateChunks: true,
      minimize: false,
      nodeEnv: 'development',
    };
  }
  return config;
};

TypeScript Config 👨‍💻

Everything in the TypeScript configuration is opinionated, what I mean by that is that you can edit it to your heart’s content and it shouldn’t break your application, what I have in the repo is just what I like as some defaults. Just make sure that the tsconfig.json file is at the root of your project.

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "jsx": "react",
    "module": "amd",
    "noImplicitAny": true,
    "outDir": "./dist/",
    "preserveConstEnums": true,
    "removeComments": true,
    "sourceMap": true,
    "target": "es6",
    "moduleResolution": "node",
    "strict": true,
    "alwaysStrict": true,
    "strictNullChecks": false,
    "downlevelIteration": true
  },
  "include": [
    "./src/"
  ],
  "exclude": [
    "node_modules"
  ]
}

Jest Config 🧪

The Jest configuration file is used to configure Jest, the testing framework that we’ll be using. Make sure to place the jest.config.json file at the root of your project. Again like the TypeScript config, this is opinionated so please feel free to change it, everything is pretty standard though: (We’ll talk about the setupEnzyme.js file a second)

{
  "roots": [
    "<rootDir>/src"
  ],
  "transform": {
    "^.+\\.tsx?$": "ts-jest"
  },
  "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.(ts|tsx)$",
  "testPathIgnorePatterns": [
    "./src/__tests__/setupEnzyme.ts"
  ],
  "collectCoverageFrom": [
    "src/**/*.{js,jsx,ts,tsx}",
    "!/node_modules/"
  ],
  "moduleFileExtensions": [
    "ts",
    "tsx",
    "js",
    "jsx"
  ],
  "snapshotSerializers": [
    "enzyme-to-json/serializer"
  ],
  "setupFilesAfterEnv": [
    "<rootDir>/src/__tests__/setupEnzyme.ts"
  ],
  "moduleNameMapper": { 
    "\\.(css|less|scss|sass)$": "identity-obj-proxy" 
  }
}

Src 🚗

(These emojis mean nothing 😆)

At the root of your project, you’ll want to create a src directory where all of the project code will live. Inside of the src directory, we’ll have 3 directories, __tests__ this is where all of our tests will live (Some people are hella opinionated about where this lives, so it is really up to you), components obviously where your components live, and declerations this is where we will be putting the declaration files for our project. Of course, you can name these directories whatever you want and you can create other directories if you would like as well, this is just a suggested project architecture, just note that you may have to edit the various configurations if you don’t follow this architecture exactly.

Alongside these directories, we have 2 files, index.tsx, which is the entry point for the project, and index.html, which is the template html file used by the HtmlWebpack plugin.

Inside of the __tests__ directory, you’ll need to create a file named setupEnzyme.ts , this file is referenced in the jest.config.json and has a really simple config for Enzyme.

import * as Enzyme from 'enzyme';
import * as Adapter from 'enzyme-adapter-react-16';

Enzyme.configure({
  adapter: new Adapter()
});

Go ahead and create a simple component and use it in the project entry point ( index.tsx ) and run the following command in the terminal:

npx webpack-dev-server -open -colors -hot -mode development

A browser window should pop open and you should see your component (make sure you check your terminal for errors though)!

Yay, you’re done!!! 🍰

You have all you need to get your React TypeScript project up and running. If you want to access all of the source code you can go to the following github repo. If you want to suggest a change make a pull-request!

#reactjs #webpack #typescript #web-development

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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

Top Android Projects with Source Code

Android Projects with Source Code – Your entry pass into the world of Android

Hello Everyone, welcome to this article, which is going to be really important to all those who’re in dilemma for their projects and the project submissions. This article is also going to help you if you’re an enthusiast looking forward to explore and enhance your Android skills. The reason is that we’re here to provide you the best ideas of Android Project with source code that you can choose as per your choice.

These project ideas are simple suggestions to help you deal with the difficulty of choosing the correct projects. In this article, we’ll see the project ideas from beginners level and later we’ll move on to intermediate to advance.

Android Projects with Source Code

Before working on real-time projects, it is recommended to create a sample hello world project in android studio and get a flavor of project creation as well as execution: Create your first android project

Android Projects for beginners

1. Calculator

Android Project: A calculator will be an easy application if you have just learned Android and coding for Java. This Application will simply take the input values and the operation to be performed from the users. After taking the input it’ll return the results to them on the screen. This is a really easy application and doesn’t need use of any particular package.

To make a calculator you’d need Android IDE, Kotlin/Java for coding, and for layout of your application, you’d need XML or JSON. For this, coding would be the same as that in any language, but in the form of an application. Not to forget creating a calculator initially will increase your logical thinking.

Once the user installs the calculator, they’re ready to use it even without the internet. They’ll enter the values, and the application will show them the value after performing the given operations on the entered operands.

Source Code: Simple Calculator Project

2. A Reminder App

Android Project: This is a good project for beginners. A Reminder App can help you set reminders for different events that you have throughout the day. It’ll help you stay updated with all your tasks for the day. It can be useful for all those who are not so good at organizing their plans and forget easily. This would be a simple application just whose task would be just to remind you of something at a particular time.

To make a Reminder App you need to code in Kotlin/Java and design the layout using XML or JSON. For the functionality of the app, you’d need to make use of AlarmManager Class and Notifications in Android.

In this, the user would be able to set reminders and time in the application. Users can schedule reminders that would remind them to drink water again and again throughout the day. Or to remind them of their medications.

3. Quiz Application

Android Project: Another beginner’s level project Idea can be a Quiz Application in android. Here you can provide the users with Quiz on various general knowledge topics. These practices will ensure that you’re able to set the layouts properly and slowly increase your pace of learning the Android application development. In this you’ll learn to use various Layout components at the same time understanding them better.

To make a quiz application you’ll need to code in Java and set layouts using xml or java whichever you prefer. You can also use JSON for the layouts whichever preferable.

In the app, questions would be asked and answers would be shown as multiple choices. The user selects the answer and gets shown on the screen if the answers are correct. In the end the final marks would be shown to the users.

4. Simple Tic-Tac-Toe

Android Project: Tic-Tac-Toe is a nice game, I guess most of you all are well aware of it. This will be a game for two players. In this android game, users would be putting X and O in the given 9 parts of a box one by one. The first player to arrange X or O in an adjacent line of three wins.

To build this game, you’d need Java and XML for Android Studio. And simply apply the logic on that. This game will have a set of three matches. So, it’ll also have a scoreboard. This scoreboard will show the final result at the end of one complete set.

Upon entering the game they’ll enter their names. And that’s when the game begins. They’ll touch one of the empty boxes present there and get their turn one by one. At the end of the game, there would be a winner declared.

Source Code: Tic Tac Toe Game Project

5. Stopwatch

Android Project: A stopwatch is another simple android project idea that will work the same as a normal handheld timepiece that measures the time elapsed between its activation and deactivation. This application will have three buttons that are: start, stop, and hold.

This application would need to use Java and XML. For this application, we need to set the timer properly as it is initially set to milliseconds, and that should be converted to minutes and then hours properly. The users can use this application and all they’d need to do is, start the stopwatch and then stop it when they are done. They can also pause the timer and continue it again when they like.

6. To Do App

Android Project: This is another very simple project idea for you as a beginner. This application as the name suggests will be a To-Do list holding app. It’ll store the users schedules and their upcoming meetings or events. In this application, users will be enabled to write their important notes as well. To make it safe, provide a login page before the user can access it.

So, this app will have a login page, sign-up page, logout system, and the area to write their tasks, events, or important notes. You can build it in android studio using Java and XML at ease. Using XML you can build the user interface as user-friendly as you can. And to store the users’ data, you can use SQLite enabling the users to even delete the data permanently.

Now for users, they will sign up and get access to the write section. Here the users can note down the things and store them permanently. Users can also alter the data or delete them. Finally, they can logout and also, login again and again whenever they like.

7. Roman to decimal converter

Android Project: This app is aimed at the conversion of Roman numbers to their significant decimal number. It’ll help to check the meaning of the roman numbers. Moreover, it will be easy to develop and will help you get your hands on coding and Android.

You need to use Android Studio, Java for coding and XML for interface. The application will take input from the users and convert them to decimal. Once it converts the Roman no. into decimal, it will show the results on the screen.

The users are supposed to just enter the Roman Number and they’ll get the decimal values on the screen. This can be a good android project for final year students.

8. Virtual Dice Roller

Android Project: Well, coming to this part that is Virtual Dice or a random no. generator. It is another simple but interesting app for computer science students. The only task that it would need to do would be to generate a number randomly. This can help people who’re often confused between two or more things.

Using a simple random number generator you can actually create something as good as this. All you’d need to do is get you hands-on OnClick listeners. And a good layout would be cherry on the cake.

The user’s task would be to set the range of the numbers and then click on the roll button. And the app will show them a randomly generated number. Isn’t it interesting ? Try soon!

9. A Scientific Calculator App

Android Project: This application is very important for you as a beginner as it will let you use your logical thinking and improve your programming skills. This is a scientific calculator that will help the users to do various calculations at ease.

To make this application you’d need to use Android Studio. Here you’d need to use arithmetic logics for the calculations. The user would need to give input to the application that will be in terms of numbers. After that, the user will give the operator as an input. Then the Application will calculate and generate the result on the user screen.

10. SMS App

Android Project: An SMS app is another easy but effective idea. It will let you send the SMS to various no. just in the same way as you use the default messaging application in your phone. This project will help you with better understanding of SMSManager in Android.

For this application, you would need to implement Java class SMSManager in Android. For the Layout you can use XML or JSON. Implementing SMSManager into the app is an easy task, so you would love this.

The user would be provided with the facility to text to whichever number they wish also, they’d be able to choose the numbers from the contact list. Another thing would be the Textbox, where they’ll enter their message. Once the message is entered they can happily click on the send button.

#android tutorials #android application final year project #android mini projects #android project for beginners #android project ideas #android project ideas for beginners #android projects #android projects for students #android projects with source code #android topics list #intermediate android projects #real-time android projects

How to add Cypress for Create React App with TypeScript

In this lesson we look at how to add #cypress with code coverage support for a Create #React App application with #TypeScript.

In the end you will have a developer flow that can save you a bunch of time in testing effort 

#react-native #react #cypress #typescript 

10 Writing steps to create a good project brief - Mobile app development

Developing a mobile application can often be more challenging than it seems at first glance. Whether you’re a developer, UI designer, project lead or CEO of a mobile-based startup, writing good project briefs prior to development is pivotal. According to Tech Jury, 87% of smartphone users spend time exclusively on mobile apps, with 18-24-year-olds spending 66% of total digital time on mobile apps. Of that, 89% of the time is spent on just 18 apps depending on individual users’ preferences, making proper app planning crucial for success.

Today’s audiences know what they want and don’t want in their mobile apps, encouraging teams to carefully write their project plans before they approach development. But how do you properly write a mobile app development brief without sacrificing your vision and staying within the initial budget? Why should you do so in the first place? Let’s discuss that and more in greater detail.

Why a Good Mobile App Project Brief Matters?

It’s worth discussing the significance of mobile app project briefs before we tackle the writing process itself. In practice, a project brief is used as a reference tool for developers to remain focused on the client’s deliverables. Approaching the development process without written and approved documentation can lead to drastic, last-minute changes, misunderstanding, as well as a loss of resources and brand reputation.

For example, developing a mobile app that filters restaurants based on food type, such as Happy Cow, means that developers should stay focused on it. Knowing that such and such features, UI elements, and API are necessary will help team members collaborate better in order to meet certain expectations. Whether you develop an app under your brand’s banner or outsource coding and design services to would-be clients, briefs can provide you with several benefits:

• Clarity on what your mobile app project “is” and “isn’t” early in development
• Point of reference for developers, project leads, and clients throughout the cycle
• Smart allocation of available time and resources based on objective development criteria
• Streamlined project data storage for further app updates and iterations

Writing Steps to Create a Good Mobile App Project Brief

1. Establish the “You” Behind the App

Depending on how “open” your project is to the public, you will want to write a detailed section about who the developers are. Elements such as company name, address, project lead, project title, as well as contact information, should be included in this introductory segment. Regardless of whether you build an in-house app or outsource developers to a client, this section is used for easy document storage and access.

#android app #ios app #minimum viable product (mvp) #mobile app development #web development #how do you write a project design #how to write a brief #how to write a project summary #how to write project summary #program brief example #project brief #project brief example #project brief template #project proposal brief #simple project brief template

Create React App: import modules using aliases with Webpack and Typescript

You can find the code of this tutorial here, and follow the guide, step by step, in this PR.

You can take a look at a demo here.

Initialize project using Create React App

Execute the following commands:

npx create-react-app cra-with-module-alias --template typescript
cd cra-with-module-alias

Setup the environment and install dependencies

Execute:

npm run eject

To the below question, answer with yes:

? Are you sure you want to eject? This action is permanent.

You will have the following structure:

cra-with-module-alias
├── README.md
├── node_modules
├── package.json
├── package-lock.json
├── .gitignore
├── config
│   ├── webpack.config.js
│   ├── ...
│   └── Other folder and files
├── scripts
│   ├── build.js
│   ├── start.js
│   └── test.js
├── public
│   ├── favicon.ico
│   ├── index.html
│   ├── logo192.png
│   ├── logo512.png
│   ├── manifest.json
│   └── robots.txt
└── src
    ├── App.css
    ├── App.tsx
    ├── App.test.tsx
    ├── index.css
    ├── index.tsx
    ├── logo.svg
    ├── react-app-env.d.ts
    ├── serviceWorker.ts
    └── setupTests.ts

Install the dependencies:

npm i

#wavelop #webappmakers #webpack #typescript #react #react native