Updates from the 85th meeting of TC39

There were several items on the agenda, this post focuses on feature proposals and their progress form the meeting that was held between August 31st, 2021 to September 1st, 2021.

Stage 4:

• Class Static Blocks Class static blocks provide a mechanism to perform additional static initialization during class definition evaluation.
• Object.hasOwn Accessible Object.prototype.hasOwnProperty()
• .at() .at() method on all the built-in indexables.

Stage 2:

• Change Array by Copy Provides additional methods to Array.prototype to enable changes on an array by returning a new copy of it with the change.
• Pipeline operator Hack pipe operator.

Stage 1:

• String is USV String String method to verify if a given ECMAScript string is a valid USV String or not.
• Array.fromAsync Like Array.from but for async iterators.
• BigInt Math Math operation for BigInt.
• Get Intrinsic A robust way to retrieve intrinsics to first-run code.
• Fixed shape objects Plain and Shared Structs.

Bonus:

That's how we work from office in Russia @ryzokuken with @TC39 first day sessions. Rostov-on-Don. tweet

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@gnumanth

Comments

[lionel-rowe]

So glad that a version of the pipeline operator has fiiiiinally moved past Stage 1. Even though I have a slight aesthetic preference for the F# syntax.

[Andy Cormack]

Yea, I feel the same, I've been waiting so long for it! Hack is definitely the best version to have moved forward, even though, like you say, the aesthetics of F# are slightly nicer.