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 …

Working with strings you’re running into typical use-cases. One of them is to append characters or words to an existing string. For example, you may want to check whether a view template file exists on your local hard disk. For that check you need the filename with extension. Your …

In web applications you may accept user inputs. The users fill out forms and submit them to send the values to your backend. Receiving data on your server usually comes with data validations. The validation steps could require a string value of a given length for a field. In other …

ts-node is a TypeScript execution engine for Node.js. It allows you to run your TypeScript code directly without precompiling your TypeScript code to JavaScript. ts-node transforms TypeScript to JavaScript in-memory without writing it to disk. Large projects may still take some time to process. This is where SWC comes …

In some situations, it’s useful to ensure an ending character on a string value. For example, you always want route paths in your web application to end with a trailing slash. Or you want to ensure a base URL for API requests already has a trailing slash before appending …

Building a client-side API client comes with some challenges when composing the request’s URL. You typically store a base URL that may come with a trailing slash. The partial request’s URL may start with a leading slash as well. If this happens, you should’t concatenate both strings …