Consider adding `"sideEffects": false` to `package.json`

[brettwillis]

Great that the module is now ESM! However bundlers like ESBuild still will not tree-shake the module because there is no side-effects declaration. Consider adding "sideEffects": false to the package.json to allow bundlers to tree-shake.

See https://webpack.js.org/guides/tree-shaking/#mark-the-file-as-side-effect-free

[github-actions]

We're glad you find this project helpful. We'll try to address this issue ASAP. You can vist https://solothought.com to know recent features. Don't forget to star this repo.

[tbouffard]

I checked the contents of version 5.0.9 and found no side effects in the code, so it seems legitimate to declare the package side-effect-free.