TypeScript version 3.4.5 is a minor patch release over version 3.4.4, both maintaining the core purpose of providing a language for application-scale JavaScript development. Examining the metadata, the primary distinctions lie in the release date and the unpacked size of the package, fileCount and the tarball link. Version 3.4.5 was released on April 23, 2019, a few days after 3.4.4 which was released on April 18, 2019. While the number of files is the same, the slightly larger unpacked size of 3.4.5 (43982802 bytes vs. 43980251 bytes) suggests minor code-level adjustments, bug fixes, or very small performance tweaks.
For developers, these differences are likely insignificant. Both versions share identical dependencies and devDependencies, indicating no major shifts in tooling or underlying library requirements. Both depends on tools like gulp for building, mocha and chai for testing, and a suite of @types packages for type definitions of various libraries. Therefore, the upgrade from 3.4.4 to 3.4.5 is likely safe. Developers should always review the official changelog for specific bug fixes or minor feature additions. The core functionality and developer experience from both version remains consistent. Users who aren't experiencing very specific bugs fixed in the newer version might not need to upgrade immediately.
The are not vulnerabilities for the version 3.4.5 of the package typescript