How to package using Parcel
This article mainly introduces the Parcel packaging example (React HelloWorld), and introduces the characteristics and usage examples of Parcel packaging in detail. If you are interested, you can learn about it
Parcel packaging features
Extremely fast packaging time
Parcel uses worker processes to enable multi-core compilation. There is also a file system cache to enable fast recompiling even after restarting the build.
Package all your resources
Parcel has out-of-the-box support for JS, CSS, HTML, files and more, and no plugins are required.
Automatic conversion
If necessary, Babel, PostCSS, and PostHTML and even the node_modules package will be used to automatically convert the code.
Configuring code splitting
Using dynamic import() syntax, Parcel splits your output file bundles (bundles), so you only need to load the code you need on the initial load.
Hot module replacement
Parcel does not need to be configured. In the development environment, the module will be automatically updated in the browser as your code changes.
Friendly error log
When an error is encountered, Parcel will output a code snippet with syntax highlighting to help you locate the problem.
React HelloWorld application packaged using Parcel. GitHub address: https://github.com/justjavac/parcel-example/tree/master/react-helloworld
0. Create a new directory
mkdir react-helloworld cd react-helloworld
1. Initialize npm
yarn init -y
or
npm init -y
. At this time, the package.json file will be created. The file content is:
{
"name": "parcel-example-react-helloworld",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "",
"license": "ISC"
}2. Add React
yarn:
yarn add react react-dom
npm:
npm install react react-dom --save
package.json File content:
{
"name": "parcel-example-react-helloworld",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "",
- "license": "ISC"
+ "license": "ISC",
+ "dependencies": {
+ "react": "^16.2.0",
+ "react-dom": "^16.2.0"
+ }
}3. Add Babel
New .babelrc file
touch .babelrc
Input content:
{
"presets": ["react"]
}Add babel-preset-react:
yarn:
yarn add babel-preset-react -D
npm :
npm install babel-preset-react --D
At this time, the package.json file content:
{
"name": "parcel-example-react-helloworld",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"react": "^16.2.0",
"react-dom": "^16.2.0"
- }
+ },
+ "devDependencies": {
+ "babel-preset-react": "^6.24.1"
+ }
}5. Add Parcel
yarn:
yarn add parcel-bundler -D
npm:
npm install parcel-bundler --D
The content of the package.json file at this time:
{
"name": "parcel-example-react-helloworld",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"react": "^16.2.0",
"react-dom": "^16.2.0"
},
"devDependencies": {
- "babel-preset-react": "^6.24.1"
+ "babel-preset-react": "^6.24.1",
+ "parcel-bundler": "^1.0.3"
}
}6. Create a new index.html file
Content
<html> <body> <p id="root"></p> <script src="./index.js"></script> </body> </html>
7. Create a new index.js file
import React from "react";
import ReactDOM from "react-dom";
const App = () => {
return <h1>Hello World!</h1>;
};
ReactDOM.render(<App />, document.getElementById("root"));8. Add packaging command
{
"name": "parcel-example-react-helloworld",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
- "test": "echo \"Error: no test specified\" && exit 1"
+ "start": "parcel index.html"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"react": "^16.2.0",
"react-dom": "^16.2.0"
},
"devDependencies": {
"babel-preset-react": "^6.24.1"
"babel-preset-react": "^6.24.1",
"parcel-bundler": "^1.0.3"
}
}9. Complete
Run
yarn start
or
npm start
and open http://localhost:1234
in the browser. The packaging process will produce two directories, .cache and dist. If For git projects, you can create a new .gitignore file and ignore these two directories:
.cache dist node_modules
The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.
Related articles:
How to implement the image cropping and uploading function of vue through js in cropper
How to implement the function of cropping pictures and uploading to the server in vue
How to solve the actual compatibility of easyui date and time box ie Question (detailed tutorial)
Explain in detail the practical skills in Immutable and React
How to use readline in Node.js to achieve line-by-line Read and write file contents
The above is the detailed content of How to package using Parcel. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to build a real-time chat app with React and WebSocket
Sep 26, 2023 pm 07:46 PM
How to build a real-time chat application using React and WebSocket Introduction: With the rapid development of the Internet, real-time communication has attracted more and more attention. Live chat apps have become an integral part of modern social and work life. This article will introduce how to build a simple real-time chat application using React and WebSocket, and provide specific code examples. 1. Technical preparation Before starting to build a real-time chat application, we need to prepare the following technologies and tools: React: one for building
Guide to React front-end and back-end separation: How to achieve decoupling and independent deployment of front-end and back-end
Sep 28, 2023 am 10:48 AM
React front-end and back-end separation guide: How to achieve front-end and back-end decoupling and independent deployment, specific code examples are required In today's web development environment, front-end and back-end separation has become a trend. By separating front-end and back-end code, development work can be made more flexible, efficient, and facilitate team collaboration. This article will introduce how to use React to achieve front-end and back-end separation, thereby achieving the goals of decoupling and independent deployment. First, we need to understand what front-end and back-end separation is. In the traditional web development model, the front-end and back-end are coupled
How to build simple and easy-to-use web applications with React and Flask
Sep 27, 2023 am 11:09 AM
How to use React and Flask to build simple and easy-to-use web applications Introduction: With the development of the Internet, the needs of web applications are becoming more and more diverse and complex. In order to meet user requirements for ease of use and performance, it is becoming increasingly important to use modern technology stacks to build network applications. React and Flask are two very popular frameworks for front-end and back-end development, and they work well together to build simple and easy-to-use web applications. This article will detail how to leverage React and Flask
How to build a reliable messaging app with React and RabbitMQ
Sep 28, 2023 pm 08:24 PM
How to build a reliable messaging application with React and RabbitMQ Introduction: Modern applications need to support reliable messaging to achieve features such as real-time updates and data synchronization. React is a popular JavaScript library for building user interfaces, while RabbitMQ is a reliable messaging middleware. This article will introduce how to combine React and RabbitMQ to build a reliable messaging application, and provide specific code examples. RabbitMQ overview:
Share an easy way to package PyCharm projects
Dec 30, 2023 am 09:34 AM
Share the simple and easy-to-understand PyCharm project packaging method. With the popularity of Python, more and more developers use PyCharm as the main tool for Python development. PyCharm is a powerful integrated development environment that provides many convenient functions to help us improve development efficiency. One of the important functions is project packaging. This article will introduce how to package projects in PyCharm in a simple and easy-to-understand way, and provide specific code examples. Why package projects? Developed in Python
How to build a fast data analysis application using React and Google BigQuery
Sep 26, 2023 pm 06:12 PM
How to use React and Google BigQuery to build fast data analysis applications Introduction: In today's era of information explosion, data analysis has become an indispensable link in various industries. Among them, building fast and efficient data analysis applications has become the goal pursued by many companies and individuals. This article will introduce how to use React and Google BigQuery to build a fast data analysis application, and provide detailed code examples. 1. Overview React is a tool for building
React Router User Guide: How to implement front-end routing control
Sep 29, 2023 pm 05:45 PM
ReactRouter User Guide: How to Implement Front-End Routing Control With the popularity of single-page applications, front-end routing has become an important part that cannot be ignored. As the most popular routing library in the React ecosystem, ReactRouter provides rich functions and easy-to-use APIs, making the implementation of front-end routing very simple and flexible. This article will introduce how to use ReactRouter and provide some specific code examples. To install ReactRouter first, we need
How to package and deploy front-end applications using React and Docker
Sep 26, 2023 pm 03:14 PM
How to use React and Docker to package and deploy front-end applications. Packaging and deployment of front-end applications is a very important part of project development. With the rapid development of modern front-end frameworks, React has become the first choice for many front-end developers. As a containerization solution, Docker can greatly simplify the application deployment process. This article will introduce how to use React and Docker to package and deploy front-end applications, and provide specific code examples. 1. Preparation Before starting, we need to install
