No polyfill has been done

[Running53]

Doesn't this library use Babel for polyfill? Then operators like?./??/... will report errors when running in a low-version browser environment, unless a Lodash is recompiled in the host environment.

[aleclarson]

That's not a polyfill, it's called syntax downpiling.

Libraries aren't responsible for such a thing, unless you're talking about a CDN build. Generally though, I would discourage using CDN builds, especially for a library like Radash, where you only use a small portion of what exists. Read this post for more reasons.

_{P.S. Check out Radashi, an actively maintained fork of Radash}