Hey, thank you.

Unfortunately this isn't a typo. I'd very happily use `.mjs` but webpack insists on mishandling the extension, which means that 99.9% of everyone who uses webpack with default (or minimum config) will see `clsx` as problem 😭

See 29b2fcea29e290d57b54ca0f5cac37fd0fcb7e70 and #7 for a little more info