Hello @yuhr

First of all, awesome work maintaining this library as it has been helpful for quite a while in some work-related projects. So I was doing a random check via Are The Types Wrong? in order to validate if it supported ESM format (which it does 🚀) in order to try out how tree-shaking works with ESBuild + setting the module mode to node16, however, I noticed there is a warning related to export default:

• Incorrect default export

The resolved types use export default where the JavaScript file appears to use module.exports =. This will cause TypeScript under the node16 module mode to think an extra .default property access is required, but that will likely fail at runtime. These types should use export = instead of export default.

So it seems some improvement could be done regarding this warning.

Cheers!