JS-Env Utility

A comprehensive utility module to detect the execution environment (Node.js, Browser, Web Worker) and platform information.

Demo

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Table of Contents

• Introduction
• Features
• Installation
• Usage
• Functions
• Running Tests
• Project Structure
• Contributing
• License

Introduction

JS-Env is a utility module designed to help developers quickly detect the environment in which their JavaScript code is running, whether it be Node.js, a web browser, or even a Web Worker. This module provides detailed information about the platform, browser, operating system, and support for various web APIs.

Features

• Detect if the environment is Node.js, a web browser, or a Web Worker.
• Identify the operating system in Node.js or browser.
• Recognize popular browsers (e.g., Chrome, Firefox, Safari).
• Check support for various web APIs (e.g., Service Worker, localStorage, fetch).
• Retrieve network information, such as connection type and speed.
• Provide a comprehensive overview of the current environment.

Installation

npm install js-env-utility

Usage

Importing the Module

Ensure you have Node.js installed on your system. To use JS-Env, import the module in your JavaScript code.

import { 
    isNode, 
    isBrowser, 
    detectPlatform, 
    detectOperatingSystem, 
    detectBrowser, 
    detectApiSupport, 
    detectNetworkInfo, 
    getEnvironmentInfo 
} from 'js-env-utility';

Functions

• isNode(): returns true if the code is running in a Node.js environment.
• isBrowser(): returns true if the code is running in a browser environment.
• detectPlatform(): returns the string Node.js or Browser based on the detected environment.
• detectOperatingSystem(): identifies the operating system and returns values like Windows, MacOS, Linux, etc.
• detectBrowser(): identifies the browser and returns values like Chrome, Firefox, Safari, etc.
• detectApiSupport(): returns an object indicating support for web APIs, such as serviceWorker, webGL, localStorage, and more.
• detectNetworkInfo(): provides network-related information (e.g., connection type, downlink speed, RTT).
• getEnvironmentInfo(): returns an object containing all the above information.

Running Tests

To ensure the module works as expected, you can run the provided test script:

1. Make sure you are in the project directory:

cd js-env-utility

2. Run the test script with Node.js:

npm run test

Sample Output

The output should log various information about the environment, such as:

Platform: Browser
Operating System: Windows
Browser: Chrome
API Support: { serviceWorker: true, webGL: true, ... }
Network Info: { type: '4g', downlink: 10, rtt: 50, saveData: false }
Full Environment Info: { ... }

Project Structure

The project is structured as follows:

• src/jsEnv.js: The main module containing the utility functions.
• test/test.js: The test script for running the tests.
• package.json: The project's package configuration.
• README.md: The project's README file.

Contributing

Contributions are welcome! Please feel free to submit a pull request or open an issue.

License

This project is licensed under the MIT License.