@swc/core jumped from version 1.2.8 to 1.2.9 on July 26, 2020. While both versions share the same core dependencies like mkdirp, progress, node-fetch, and true-case-path, suggesting stability in fundamental functionalities, there are subtle changes developers should note. The devDependencies remain identical, indicating a focus on internal tooling and testing infrastructure consistency. This means the developer experience regarding testing with jest, code transformation pipelines with @babel/*, and type checking with typescript should be largely unchanged between the two versions.
The key difference lies in the distributed package itself. Version 1.2.9 has a slightly smaller fileCount (459 vs. 461) but a larger unpackedSize (3564629 vs. 3556331). This suggests modifications to the file structure or content within the package. It is possible that some files got merged or compressed differently leading to fewer files but overall size increment. The new release was published less than 2 hours after the older one, so the changes are likely bug fixes or very minor improvements. Developers should verify the new version will not break their existing code.
The are not vulnerabilities for the version 1.2.9 of the package @swc/core