Rollup Plugin TS underwent several updates between version 1.2.14 and 1.2.22, improving the plugin's functionality as a Typescript Rollup bundler. Several direct dependencies were bumped, including @babel/core, browserslist,@rollup/pluginutils, @wessberg/ts-clone-node, @wessberg/browserslist-generator and tslib improving core functionality and compatibility. Babel related dependencies were upgraded from the 7.8.3 range to the 7.9.0 range.
In the devDependencies section, key upgrades are noticeable in the testing and development environment. typescript was upgraded from ^3.7.5 to ^3.9.0-beta. Besides general bug fixing and performance improvements upgrading Typescript versions can allow developers to use newer language features. Linting and code quality tools saw significant updates, specifically with @typescript-eslint/parser and @typescript-eslint/eslint-plugin moving to version ^2.25.0. Furthermore, the peer dependencies saw a shift, with rollup now require to be greater than version 1 instead of version 1.30.0. This is a good change because users will have now the flexibility of upgrading to rollup 2 or 3.
The upgrade of @wessberg/rollup-plugin-ts as a dev dependency from 1.2.13 to 1.2.21 means that this package is using internally the features of the library in the latest versions, while it's being developed. This is a good sign because the developers are using the package and making sure it works as they expect.
The are not vulnerabilities for the version 1.2.22 of the package rollup-plugin-ts