You may notice a deprecation warning in your terminal that the fs.Stats constructor is deprecated. Node.js deprecated the public fs.Stats constructor in version 22.0.0: (node:17560) [DEP0180] DeprecationWarning: fs.Stats constructor is deprecated. (Use `node --trace-deprecation ...` to show where the warning was created) This tutorial …

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 …

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 …

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 …

When writing code, you eventually want or need to change existing implementation. Changing existing code can have side effects for the application and you may need to refactor parts of the project which you didn’t plan to touch. Yet, it’s necessary to move forward and sunset old versions …

In the previous Future Studio tutorial, we looked into the details of what’s Symbol.iterator in JavaScript. Symbol.iterator is a global constant for the @@iterator property used by JavaScript’s iteration protocol. When looping through an iterable, for example, an array, JavaScript looks for the @@iterator property that …