Sometimes you need to detect the version running your code at runtime. You may need this to ensure that your code runs with a required version of Bun. This tutorial shows you how to detect the Bun version, that runs your code, at runtime. {{outline}} Determine the Bun Version Running …

The Bun JavaScript runtime is still in an early stage of development at the time of writing this tutorial. It’s not 100% compatible with Node.js and there are a handful of APIs missing for full interoperability. If you still want to support Bun, you may need to adjust …

Starting from Node.js 20.10.0 and 21.7.0 you can format a text using a styleText utility function. You may know terminal styling packages like Chalk already. There’s a good chance you don’t need Chalk anymore 😃 styleText is a simple tool and useful in console …

We often use the terms argument and parameter when discussing code. We use both terms interchangeably, but actually, they are not. Both terms describe different things. An argument describes a value passed during a function invocation. It’s the value you’re passing down to a function. A parameter describes …

ECMAScript modules are an official standard describing a format on how to write reusable JavaScript code. Browsers used ECMAScript modules and Node.js had their own module loading implementation: CommonJS. Node.js added full ESM support starting from version 12. At the time of writing this tutorial, developers migrate their …

Grouping array items is a common task in programming. You probably wrote a JavaScript grouping function multiple times in your projects. And in the future, you don’t necessarily have to do it again. JavaScript is getting support for array grouping with the static Object.groupBy and Map.groupBy methods. …

JavaScript has supported async iterators since ES2018. All modern browser versions handle async iterables and Node.js can do it since version 10.x. Async iterables have a positive aspect and a drawback at the same time: you need to consume them to know the result. That means you can’ …

We’re using a small performance optimization in our code bases: caching computation results in local variables. Saving results in a local variable is borrowed from the memoization technique. Memoizing values improves the performance of function execution by storing the results and reusing them for a function call. This tutorial …