TypeScript 5.3: Smaller Bundle Size and Improved Imports

2023/08/15

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The latest release of TypeScript, version 5.3, brings significant improvements to bundle size and imports. According to the article, the bundle size in TypeScript 5.3 is 20% smaller compared to the previous version, 5.2. This reduction in size is beneficial for developers as it improves the performance and loading time of their applications.

Additionally, the article mentions that the import process has been optimized. The authors have moved tsserverlibrary.js to typescript.js and made tsserverlibrary.js a shim. This change results in a slight increase in the size of typescript.js, but it only adds about 20ms of extra time to importers.

The TypeScript team also discovered that they can further improve the import process in the future. This update is welcomed by developers who rely on TypeScript for their projects, as it enhances the overall development experience.

Overall, TypeScript 5.3 brings notable improvements in bundle size and imports, making it a compelling choice for developers seeking performance optimizations in their projects.