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JavaScript supports the BigInt data type representing whole numbers larger than the Integer rage (2^53 - 1). An app of ours has database tables using a BigInt number for primary keys. ESLint showed an issue that “BigInt is not defined” while mapping the primary key values from the database …

Sometimes you need to retrieve the name of a class in JavaScript. This is helpful for debug messages or when using the class name as an identifier. Retrieving the class name in JavaScript is different for static and instance methods. This tutorial walks you through the individual method types and …

Web frameworks in Node.js provide a request object containing information from the requesting instance. The request object typically includes the IP address of the requesting client. If you want to geo-locate the requesting user, the IP address is helpful. This tutorial shows you how to retrieve the client IP …

The “unsupported media type“ error occurred while uploading a file to a hapi server. The file is an Excel sheet and at first, it seemed like the content type was the issue. But the problem was the multipart upload which comes with a straightforward fix! {{outline}} Fixing “Unsupported Media Type” …

JavaScript comes with a globally available String class. It provides dozens of useful methods for string transformations. For example, you may lowercase or uppercase a given string, replace parts of the string value, or check whether a string value includes a given term. This tutorial shows you how to remove …

Serializing JavaScript objects and other data structures as JSON is useful for data exchange between a server and a client. The JSON data exchange between client and server doesn’t require a JavaScript stack on both ends. JSON support is typically available in most programming languages. {{outline}} Creating a Custom …

Most of the Node.js examples for GitHub Actions use version numbers like 12.x. This value describes the latest Node.js v12 release, independently from the minor or patch version. The Node.js GitHub Action supports exact version numbers beside the wildcard match. This is helpful when you want …