QR Code Generator with JavaScript, Node Modules

This project is a Node.js-based CLI application that allows users to generate a QR code for any URL or message, save it as a PNG image, and store the inputted URL/message in a text file. The QR code image is automatically deleted after 10 seconds to ensure space efficiency.

Features

• User Input: Prompts the user to enter a URL or message.
• QR Code Generation: Creates a QR code using the qr-image library.
• File Handling: Saves the QR code image as qr_code.png and the input in URL.txt.
• Auto Deletion: Deletes the QR code image after 10 seconds.

Prerequisites

• Node.js installed on your machine.
• Basic knowledge of command-line interface (CLI).

Installation

Clone the repository and install the required dependencies:

# Clone the repository
git clone <repository-url>

# Navigate to the project directory
cd qr-code-generator

# Install dependencies
npm install

# inquirer
Module Purpose: inquirer is a popular Node.js library used to create interactive command-line interfaces (CLI). It allows developers to prompt users for inputs in the terminal.
How it’s used: In this project, inquirer.prompt() is used to ask the user for a URL or a message that will be converted into a QR code.
# Installation
npm install inquirer
or
yarn add inquirer

# qr-image
Module Purpose: qr-image is a library that generates QR codes in image formats such as PNG or SVG.
How it’s used: After the user enters the URL or message, the input is passed to qr-image to generate a QR code in PNG format, which is saved to the file system.
# Installing
npm install qr-image

# fs (File System)
Module Purpose: fs is the built-in Node.js module for interacting with the file system, allowing reading and writing of files.
How it’s used:
The fs.createWriteStream() function is used to save the generated QR code image to a file.
fs.writeFile() saves the user's input (the URL or message) to a text file (URL.txt).
fs.unlink() is used to delete the QR code image (qr_code.png) after 10 seconds.