Es6 taget

[gryole]

Is there any special case for using "target": "es6", at tsconfig.json ?

Because lib/index.js is shipped with ES6 and could not be used as is and should be recompiled to ES5.

[2Pacalypse-]

It's because es5 target in typescript's compiler didn't support iterators.

However, after doing some research, I see they actually have support for iterators in lower targets of ES, behind a flag: microsoft/TypeScript#12346

I just published a new version with a es5 target, and hopefully everything works :d. I have very little experience with Typescript, so please report any issues if you encounter them.

Also, core-js typings shouldn't be necessary anymore, so you can uninstall those if you installed them specifically for this project.