How to create a react app without using Create-React-App CLI

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In this post i am going to show you how to create a react app without Create-React-App CLI.

First of all, you need to creata a folder to contain your project.

mkdir my-react-app

Then you will have to enter that folder and initialize a new node project.

npm init -y #skip the questions

After creating the project, you will need to install parcel, react and react-dom dependencies.

npm install parcel-bundler react react-dom

This will install parcel (which is a simpler alternative to webpack) along with react and react-dom.

Now that you have the dependencies installed, create an HTML file which will serve as your template. Let's call it index.html

<!DOCTYPE html>
<html lang="en">
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=Edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">


  <!-- HTML -->

  <!-- Custom Styles -->
  <link rel="stylesheet" href="style.css">

  <div id="root">

  <script src="main.js"></script>

Now we need to create our main.js file.

// import dependencies

import React from "react"
import ReactDOM from "react-dom"

// A simple react component
const Hello = () => {
    return (
         <h1> Hello World </h1>

ReactDOM.render(<Hello />, document.getElementById("root")) // render element on div with ID of 'root'

Now we have a basic react component that shows Hello World to the DOM. We need to compile it to actually see the result. You need to run

parcel index.html #or whatever name you gave to your html file

Parcel will take care of the rest, that is : compiling your JSX component to html and bundling it. It will then startup a local server yiu can visit to view your app. It will automatically reload when any change is made.

This is the end. Now you can create a react app withiut the default CLI. You can run the below command to actually build your react app for production

parcel build index.html

Note that you can write your react components in separate files jist lile you will do with create-react-app project.

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