Version Details and Security Vulnerabilities

tslib is a vital runtime library for TypeScript, providing essential helper functions that enable developers to leverage TypeScript's advanced features. Version 1.12.0 builds upon the foundation of its predecessor, 1.11.2, offering subtle but potentially impactful improvements for projects utilizing TypeScript. Both versions share the same permissive 0BSD license, making them freely usable in a wide array of projects. The core functionality remains consistent, delivering the necessary runtime support for TypeScript's compiler optimizations. Differences primarily manifest as refinements in code size and potentially in performance characteristics. Version 1.12.0 shows an increase in unpacked size, slightly increasing from 31697 to 32754, so there must have been changes in the implementation of the helper functions, or that new functionalities were added that needed more space to be compiled to javascript. Published on May 12, 2020, version 1.12.0 was released a week after 1.11.2 (May 5, 2020). Upgrading between these minor versions is usually seamless, but developers should always consider and test their projects to check for unexpected behavior, though it is not expected. Both are maintained by Microsoft, which has a strong reputation regarding TypeScript support. Choosing between these versions generally depends on individual project needs and dependency management strategies, the impact of a slight increase of the bundle size should be considered.