November 5th, 2026 · 2 commits
Two small editorial spec fixes: updated edition intro text and clarified Global Environment Record wording.
Read the issue →
November 3rd, 2026 · 3 commits
Editorial spec updates improved figure references and clarified DisposableStack move semantics; CONTRIBUTING now links TC39’s AI policy.
Read the issue →
November 2nd, 2026 · 3 commits
TC39 advanced dynamic code brand checks, adding a host hook for eval/function constructors and unifying typed array initialization.
Read the issue →
October 31st, 2026 · 2 commits
Spec updates make DataView.prototype.byteLength and byteOffset return 0 on detached/out-of-bounds buffers, plus PR previews shed duplicated TOCs.
Read the issue →
October 30th, 2026 · 15 commits
New Iterator.prototype.includes method added, alongside a broad editorial cleanup of parsing, grammars, and RegExp split text.
Read the issue →
October 29th, 2026 · 1 commits
A small script tweak recognizes a contributor who changed usernames in the legacy commit audit list.
Read the issue →
October 23rd, 2026 · 2 commits
Editorial cleanup aligns AND/XOR/OR wording across the spec and folds BigIntBitwiseOp into the shared bitwise-ops pattern.
Read the issue →
October 22nd, 2026 · 9 commits
Added Iterator.prototype.chunks/windows and refactored indexed-list joining to support ECMA-402 locale and method hooks.
Read the issue →
October 16th, 2026 · 1 commits
Clarifies that `filter` and `with` can observe `undefined` when buffer detachment/shrinking occurs during coercion.
Read the issue →
October 15th, 2026 · 1 commits
Editorially tightens OrdinaryCreateFromConstructor and GetPrototypeFromConstructor to specify realm-relative intrinsic lookup and simplify the prose.
Read the issue →
October 9th, 2026 · 6 commits
Mostly editorial spec cleanup, plus one normative fix to TypedArray atomic access bounds checking.
Read the issue →
October 3rd, 2026 · 1 commits
ECMAScript adds Iterator.prototype.join, letting iterators concatenate values into a string with an optional separator.
Read the issue →
October 1st, 2026 · 5 commits
Editorial cleanup tightens Number terminology, simplifies equality and math preconditions, and defines finite time values.
Read the issue →
September 20th, 2026 · 1 commits
Editorial cleanup clarifies SetViewValue as unused and makes typed-array setters perform the write before returning undefined.
Read the issue →
September 18th, 2026 · 1 commits
tc39/ecma262 bumps ESMeta to v0.8.0 and refreshes the repository’s ignore list for new analyzer outputs.
Read the issue →
September 8th, 2026 · 3 commits
Editorial pass renames alias variables and aligns typed array algorithms with dedicated element access helpers.
Read the issue →
September 2nd, 2026 · 1 commits
Updated ecmarkup to 25.0.2 so generated specs can be searched in the resulting document.
Read the issue →
August 28th, 2026 · 16 commits
Promise.try now uses PromiseResolve on success, alongside broad editorial refactors and template-literal cleanup.
Read the issue →
August 21st, 2026 · 8 commits
A normative iterator builtin fix and a new integer-snap abstract op landed, alongside several Temporal/time-zone editorial updates.
Read the issue →
August 20th, 2026 · 2 commits
Two small spec wording tweaks rename and then restore aliases in Canonicalize; no behavioral change.
Read the issue →
August 6th, 2026 · 11 commits
Mostly spec editorial work, highlighted by a deeper TypedArray validation refactor and a few notable terminology/reference updates.
Read the issue →
August 5th, 2026 · 7 commits
A refactor adds shared index-conversion helpers and rewrites several string, array, and typed-array algorithms; editorial cleanup also tightens execution-context wording.
Read the issue →
July 17th, 2026 · 5 commits
ecmarkup was bumped and several editorial clarifications landed, including a `using` grammar cleanup and private-element wording tweaks.
Read the issue →
July 9th, 2026 · 1 commits
A small editorial spec update formalizes “thenable,” clarifying promise-related terminology in ECMAScript.
Read the issue →
July 8th, 2026 · 2 commits
Spec adds Symbol.dispose and Symbol.asyncDispose; workflows also move to actions/checkout v7 for safer PR checkout handling.
Read the issue →
July 2nd, 2026 · 8 commits
ECMAScript editorially renames accessor fields and clarifies cover-grammar early errors, plus a parseInt cleanup and print-style tweaks.
Read the issue →
June 24th, 2026 · 2 commits
TC39 adds using/await using, disposal symbols, and stack types, plus a small editorial refactor to reuse caller-context logic.
Read the issue →
June 15th, 2026 · 4 commits
Snapshot preview warnings now link to PRs and show clearer commit labeling; ECMA-262 also saw a broad editorial alias-name cleanup.
Read the issue →
June 5th, 2026 · 4 commits
Adds new Atomics operations and refactors Symbol.for storage into the Agent record; also editorial cleanups across built-in subclassing text.
Read the issue →
June 2nd, 2026 · 13 commits
+1
Major spec additions include Iterator.zip/zipKeyed and Atomics.pause, plus a few normative parser and iterator-related fixes.
Read the issue →