In this guide, we explore the similarities and differences between TypeScript unions, enums, and objects. We discuss when to use each feature, and why unions and objects should be the backbone of most TypeScript projects. Union types are a powerful tool that allow TypeScript to programmatically reason about all possibilities that could result from different decisions. Enums give values a human-readable name that can be easily referenced in code. Constant objects allow for strict typing and can be used as a more flexible alternative to enum types. This article provides a comprehensive overview of these TypeScript features, including code examples and pitfalls to watch out for.
