Exploring TypeScript 5 features: Smaller, simpler, faster

TypeScript 5 introduces a range of new features and enhancements that aim to improve performance, reduce complexity, and increase speed, making it a significant update for developers building web applications. Key improvements include faster build times, a reduction in npm package size, and a shift from namespaces to a modular infrastructure, which supports modern build tools. The update also brings changes to decorators, allowing more customization of method behavior, and introduces const type parameters for more specific type inferences. New module resolution strategies and support for multiple configuration files provide greater flexibility in project setup. Additionally, all enums are now union enums, offering more flexibility, and new resolution customization flags allow for more precise package resolution. TypeScript 5 also introduces support for export type *, JSDoc enhancements with @overload and @satisfies annotations, and deprecates several flags that will be unsupported in future versions. These advancements are designed to streamline the development process and enhance the capabilities of TypeScript as a robust tool for creating reliable and efficient web applications.