ES2019 features & ES-Next
https://github.com/tc39/proposals
Object.fromEntries(), trimStart(), trimEnd(), flat(), flatMap()
https://blog.logrocket.com/5-es2019-features-you-can-use-today/
https://alligator.io/js/es2019/
https://flaviocopes.com/es2019/
https://www.freecodecamp.org/news/whats-new-in-javascript-es2019-8af4390d8494/
https://2ality.com/2018/02/ecmascript-2019.html
https://www.infoq.com/news/2019/03/ES2019-feature-set-released/
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