This is a breaking change. But that's okay, the previous behavior for
async was just plain wrong and would crash the entire node process,
which is unacceptable. A major version bump will be needed to release
this.
Remove wrong `.replace()` statement which breaks any language file from a language ending with the character `n`. It is unclear to me why this replace is even there. As it is even invalid to replace without supplying a string with what it needs to be replaced.
