[tmh88j]

> ES6 added most, if not all, the building blocks to build 99% of the computation you'll ever need. What's missing that you'd deem as worthless?

Not the same person, but date/time manipulation is one area I've encountered that's incredibly frustrating (especially when timezones are involved) without libraries like moment. Cross-browser functionality only compounds the issues.

[halfmatthalfcat]

Ah yes, I'd agree with that. To be fair though as well, many languages have struggled there; re: Java/Joda/Java 8's java.time