![]() ![]() Extra types - Some useful and commonly used types, both scalar or composite.Printer - Schema printing for GraPHPinator typesystem.Includes some opt-in extensions which are out of scope of official specs:.Easy to extend with extra functionality using Modules or middleware Directives. Sacrafices a tiny bit of convenience for huge amount of clarity and safety - no random configuration arrays, no mixed types, no variable function arguments - this library doesnt try to save you from verbosity, but makes sure you always know what you've got. Fully typesafe, and therefore minimum required PHP version is 8.0.Aims to be compliant with the latest draft of GraphQL specification.Its job is transformation of query string into resolved Json result for a given Schema. To further explore Node modules, visit their documentation page.GraPHPinator is feature complete PHP implementation of GraphQL server. Finally, we created a Node.js server for authenticating our user with a JWT token by signing it using the QR code secret coming from the frontend. We also learned how to encode data in different forms in a QR code, such as an SVG file. Whether we need to encode data for a web or mobile app, it can easily be achieved using the Node runtime environment. In this tutorial, we learned how to store and share information in a convenient and efficient way by using QR codes. Now that we have tested our server’s liveness, we can send requests to the login route from the frontend we built and authenticate our users. Open your terminal and run the following command: curl -I The output should look like this: ![]() We can test it in many ways, such as with Postman or Thunder Client, but I will use a curl request. Let’s test our server by hitting the test route that we previously configured. To run the server, first add the following code in the scripts objects located in package.json: "start": "nodemon index.js", QRCode.toFile('/output-file-path/file.png', 'Encode this text in QR code'. Here is an example of how to use the toFile method to generate a QR code image file: // _ Importing qrcode _ \\ ![]() ![]() This method takes a file path, the text to encode in the QR code, and an options object as arguments, and generates a QR code image file at the specified file path. To generate a QR code image, you can use the toFile method from the qrcode module. Open a terminal window and run the following command: npm install qrcode Generating QR code images Once you have Node.js and npm installed, you can install the qrcode library and its dependencies using npm. If you do not have these tools installed, you can download and install them from the Node.js website. To install the qrcode library, you will need to have Node.js and npm (the Node.js package manager) installed on your system. The qrcode library provides a simple API for writing QR codes. Installing the qrcode-reader and jimp libraries.In this article, we will go over the steps for reading and writing QR codes in Node using three popular libraries: qrcode-reader and jimp for reading QR codes, and qrcode for generating QR codes. Reading and writing QR codes can easily be done with Node.js, the popular JavaScript runtime environment. QR codes are a convenient and efficient way to store and share information. How to create and read QR codes in Node.js My interest lies in creating and using technologies to increase the quality of life, and ease of doing business. Kayode Adeniyi Follow I am a software engineer with a technology consulting mindset. ![]()
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