Node.js provides the node:fs core module allowing you to interact with the local file system. You can create, read, update, or delete files on your computer’s hard disk. This tutorial shows you how to delete a file from your local disk. {{outline}} Delete a File From Local …

When working with Node.js’ crypto module you sometimes need to provide Buffer instances as an argument. For example, the timingSafeEqual function accepts two buffer arguments for comparison. Sometimes your raw values are strings and you need to convert them before using them in your application code. This tutorial shows …

When interacting with data from different sources, like your local data and third-party services, the data has different styles and formats. Let’s say you’re using a camelCase format and other sources use everything in UPPERCASE. Independently of the situation, you may want to transform all keys of an …

Sometimes you’re running into use-cases where you need to detect whether a given number has decimal places. This tutorial shows you how to do that! {{outline}} Detect If a Number Has Decimal Places Generally, you may want to apply formatting on numbers. And you may want to round numbers …

All tutorials here at Future Studio carry a list of tags. We’re assigning tags to tutorials for some kind of grouping. Tutorials may belong to different topics and tags are a good use-case for that. On the server-side we’re using an array of strings for the tags. When …

When working with strings you may want to transform the first character of a given value. This could happen when you scaffold files for a project and want to ensure a given function name starts with a lowercase character. Or you’re doing something else and still want to know …

Changing only the first character of a string value in JavaScript may happen when you scaffold files or code in your projects. You may want to ensure a specific casing for your method or class names. For example, you could ensure a class name always starts with an uppercase character. …

Working with string values comes with some typical problems. One of them is to add a prefix to an existing string. For example, you might compose a URL and want a given URL path with a leading forward slash in case it’s not present on the current value. This …