Updates from the 102nd TC39 meeting

There were several items on the agenda, this post focuses on feature proposals and their progress from the 101th TC39 meeting [11-13th June 2024].

Stage 2:

• Error.isError: Error.isError tests if a value is an Error instance, irrespective of its Realm origin.

• ESM Phase Imports: Solves the static worker module analysis problem for JavaScript, through defining suitable phase imports for Source Text Module.

• Discard Bindings: Discard void bindings.

• Iterator Sequencing: create iterators by sequencing existing iterators

Stage 2.7:

• Deferred Import Evaluation: a way to defer evaluate of a module.

• Joint Iteration:synchronise the advancement of multiple iterators

• RegExp.escape: proposal seeks to investigate the problem area of escaping a string for use inside a Regular Expression.

Stage 3:

• Promise.try: an ergonomic, readable, and intuitive way to invoke a function and always get a Promise.

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Hemanth HM

Comments

[Šime Vidas]

What is stage 2.7?

[hemanth.hm]

[Ujjwal Sharma]

It's a new stage introduced last year. I gave two presentations about it recently but we should do a public post too @hemanth what do you think?

[hemanth.hm]

@ryzokuken for sure!

[Antonio Galindo]

Good to know, thanks for the update.