Oct 5–11, 2026 · 6 commits
Numeric literal cleanup and a TypedArray correctness fix
Grammar simplifications landed alongside a fix to TypedArray revalidation for multi-byte elements on growable SharedArrayBuffers.
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Sep 28 – Oct 4, 2026 · 6 commits
Spec clarifies number/time terminology and adds Iterator.join
Editorial cleanup around finite numbers/time values plus a new Iterator.prototype.join() method with precise semantics.
Read the issue →Sep 14–20, 2026 · 2 commits
TypedArray setters clarified; ESMeta tooling refreshed
A small week focused on editorial TypedArray return-value cleanup and a workflow/tooling bump for ESMeta checks.
Read the issue →Sep 7–13, 2026 · 3 commits
Typed array spec cleanup tightens indexed access wording
Editorial updates refine typed array algorithms, standardize internal names, and fix a few wording details with no behavior change.
Read the issue →Aug 31 – Sep 6, 2026 · 1 commits
Ecmarkup dependency bump enables searchable output
A quiet week with a single ecmarkup upgrade to support searchable output and a lockfile refresh.
Read the issue →Aug 24–30, 2026 · 16 commits
Promise.try semantics tightened, broad spec cleanup
Promise.try now uses PromiseResolve, alongside a large wave of editorial and terminology cleanup across the spec.
Read the issue →Aug 17–23, 2026 · 10 commits
Spec wording tightened for iterators, integers, and Temporal
Editorial cleanup plus sharper abstract ops and iterator/Temporal wording updates; no behavioral changes.
Read the issue →Aug 3–9, 2026 · 18 commits
TC39 adds shared index helpers and tightens TypedArray rules
A quiet week with two notable spec cleanups: reusable index helpers across built-ins and a clearer TypedArray validation model.
Read the issue →Jul 13–19, 2026 · 5 commits
Spec wording tightened and ecmarkup refreshed
A quiet week with a few editorial spec clarifications and an ecmarkup bump to refresh generated output.
Read the issue →Jul 6–12, 2026 · 3 commits
Spec fills a Symbol disposal gap and clarifies thenables
ECMA-262 now explicitly defines Symbol.dispose/asyncDispose and adds a formal Promise-section definition of thenable.
Read the issue →Jun 29 – Jul 5, 2026 · 8 commits
Spec-wide terminology cleanup and algorithm refactors
Accessor fields were renamed throughout the spec, early-error coverage rules were clarified, and parseInt got a cleaner algorithm split.
Read the issue →Jun 22–28, 2026 · 2 commits
Explicit resource management becomes part of the spec
This week added `using`/`await using`, disposable stacks, and `SuppressedError`, plus a cleanup refactor in async/generator control flow.
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