Migrate from tsup

tsup is a powerful and widely-used bundler that shares many similarities with tsdown. While tsup is built on top of esbuild, tsdown leverages the power of Rolldown to deliver a faster and more powerful bundling experience.

If you're currently using tsup and want to migrate to tsdown, the process is straightforward thanks to the dedicated migrate command:

npx tsdown migrate

WARNING

Please save your changes before migration. The migration process may modify your configuration files, so it's important to ensure all your changes are committed or backed up beforehand.

Migration Options

The migrate command supports the following options to customize the migration process:

• --cwd <dir> (or -c): Specify the working directory for the migration.
• --dry-run (or -d): Perform a dry run to preview the migration without making any changes.

With these options, you can easily tailor the migration process to fit your specific project setup.

Acknowledgements

tsdown would not have been possible without the inspiration and contributions of the open-source community. We would like to express our heartfelt gratitude to the following:

• tsup: tsdown was heavily inspired by tsup, and even incorporates parts of its codebase. The simplicity and efficiency of tsup served as a guiding light during the development of tsdown.
• @egoist: The creator of tsup, whose work has significantly influenced the JavaScript and TypeScript tooling ecosystem. Thank you for your dedication and contributions to the community.