Type-fest's release frequency is variable. It started strong in 2019, slowed down until 2021, before picking up significantly. The project was most active between 2021 and 2024. Release activity is showing decline during the last three months. No releases have occurred since May 2025.
Type-fest is a collection of essential TypeScript types that enhance type safety and developer experience. It offers utilities for immutability, advanced object manipulation, functional programming paradigms, and more. This library helps create robust and maintainable TypeScript code by providing pre-built, well-tested type definitions for common scenarios, reducing boilerplate and promoting best practices in type system usage. It simplifies complex type operations and prevents common type-related errors.
Type-fest downloads show a generally increasing trend from March 2024 to August 2025, peaking in June 2025 at over 1 billion downloads. September 2025 downloads are significantly lower but are incomplete, representing only the first 10 days of the month.
