Please Add ECMAScript 2020 - ES2020 - ES11 features

[Raja Ram T]

BigInt

Dynamic import

Exporting modules

Optional Chaining Optional Chaining

Nullish coalescing operator

Promise.AllSettled

String.matchAll()

For-in order

Credits/References:

https://areknawo.com/ecmascript-2020-biggest-new-features/

https://dev.to/aryclenio/the-new-features-of-javascript-in-2020-es11-7jc