Array.prototype.flatMap missing from es2019?

[BenRomberg]

Bug report

What

Array.prototype.flatMap is missing when calling https://cdn.polyfill.io/v3/polyfill.min.js?features=es2019

Details

Tested with Edge 17, Array.prototype.flatMap polyfill is only included when asking for it specifically (e.g. https://cdn.polyfill.io/v3/polyfill.min.js?features=Array.prototype.flatMap). According to http://www.ecma-international.org/ecma-262/10.0/index.html it should be included with es2019.

Searched issues for flatMap but couldn't find anything.

In any case, thanks a ton for this great service, we happily use to easily support older browsers :-)

[JakeChampion]

Thanks for the report, this was fixed in e7322ea and will be out in version 3.52.3 of polyfill-library, polyfill.io will have the new version later today :-)

[BenRomberg]

@JakeChampion thank you so much for the lightning fast response and fix :-)

[JakeChampion]

PR for polyfill.io -- polyfillpolyfill/polyfill-service#2165