There were several items on the agenda, this post focuses on feature proposals and their progress from the 99th TC39 meeting [27-30 November 2023].

Stage 4:

• Array Grouping: A proposal to make grouping of array items easier

• Promise.withResolvers: Returns a promise with its resolution and rejection functions exposed.

Stage 1:

• Math.sum: add a method to sum multiple values.

• Module Sync Assert: Attempting to resolve issues with an async module in the dependency graph causing bugs or breaking changes in the current module.

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

Withdrawn proposals:

• Operator overloading.

• Extensible numeric literals.