How to present interactive CLI prompts in Swift

Swift is a great language for building command-line tools. Package managers, code generators, deployment scripts — they're all natural fits. But when it comes to collecting input from the user, the standard library leaves you with print and readLine, and not much else. The result is usually something like this: print("Enter your project name:") let name = readLine() ?? "" It works, but there's no placeholder to guide the user, no inline validation feedback, no way to present a list of choices, and no graceful handling of Ctrl+C. For anything beyond the simplest script, you end up writing infrastructure instead of features. Promptberry fills that gap. It's a Swift library for building interactive CLI prompts — text input, selects, confirmations, spinners, progress bars, and more. The most common prompt is text. It supports a placeholder shown when the field is empty, and an optional validate closure that returns an error message if the input is invalid. let name = try Promptberry.text(