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Pull requests: tc39/ecma262
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Layering: Narrow [[ArrayBufferDetachKey]] to ECMAScript language value
editorial change
layering
affects the public spec interface and may require updates to integrating specs
#3980
opened Sep 18, 2026 by
linusg
Member
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Editorial: fix incorrect assertion in TA.prototype.{filter,with}
editorial change
has test262 tests
spec bug
#3979
opened Sep 17, 2026 by
bakkot
Member
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Editorial: Use "Internal Slots" tables for more object types
editorial change
#3976
opened Sep 14, 2026 by
linusg
Member
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Normative: Change KeptAlive semantics to strongify particular WeakRefs
needs consensus
This needs committee consensus before it can be eligible to be merged.
normative change
Affects behavior required to correctly evaluate some ECMAScript source text
#3974
opened Sep 13, 2026 by
kmiller68
Contributor
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Normative: make DataView.prototype.{byteLength,byteOffset} not throw when backed by detached buffer
has test262 tests
needs consensus
This needs committee consensus before it can be eligible to be merged.
normative change
Affects behavior required to correctly evaluate some ECMAScript source text
#3972
opened Sep 9, 2026 by
bakkot
Member
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Editorial: add grouping parens to chained infix ops where order matters
editorial change
establishes editorial conventions
#3971
opened Sep 3, 2026 by
michaelficarra
Member
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Normative: add Iterator.prototype.chunks and Iterator.prototype.windows
has test262 tests
normative change
Affects behavior required to correctly evaluate some ECMAScript source text
pending stage 4
This proposal has not yet achieved stage 4, but may otherwise be ready to merge.
proposal
This is related to a specific proposal, and will be closed/merged when the proposal reaches stage 4.
#3970
opened Sep 2, 2026 by
michaelficarra
Member
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Normative: add Iterator.prototype.includes
has test262 tests
normative change
Affects behavior required to correctly evaluate some ECMAScript source text
pending stage 4
This proposal has not yet achieved stage 4, but may otherwise be ready to merge.
proposal
This is related to a specific proposal, and will be closed/merged when the proposal reaches stage 4.
#3969
opened Sep 2, 2026 by
michaelficarra
Member
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Editorial: Define an algorithm for %TypedArray%.prototype.toLocaleString
editorial change
#3958
opened Aug 23, 2026 by
gibson042
Member
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Normative: Make tail-call optimization normative-optional to match web reality
needs consensus
This needs committee consensus before it can be eligible to be merged.
normative change
Affects behavior required to correctly evaluate some ECMAScript source text
web reality
#3957
opened Aug 22, 2026 by
gibson042
Member
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Editorial: Refactor FunctionDeclarationInstantiation for better readability and consistency
editorial change
#3955
opened Aug 20, 2026 by
gibson042
Member
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Editorial: rename genContext to calleeContext in RunCallerContext
editorial change
#3952
opened Aug 14, 2026 by
Leonabcd123
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Editorial: define "essential internal method"
editorial change
#3951
opened Aug 14, 2026 by
nicolo-ribaudo
Member
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Normative: add Iterator.prototype.join
editors approved
has test262 tests
normative change
Affects behavior required to correctly evaluate some ECMAScript source text
pending stage 4
This proposal has not yet achieved stage 4, but may otherwise be ready to merge.
proposal
This is related to a specific proposal, and will be closed/merged when the proposal reaches stage 4.
Editorial: Improve Memory Model/SharedArrayBuffer auto-links
editorial change
#3935
opened Jul 30, 2026 by
gibson042
Member
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Editorial: decouple JSON.parse from ES evaluation semantics
#3933
opened Jul 28, 2026 by
peetklecha
Member
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Normative: Update RevalidateAtomicAccess to account for all bytes of a TypedArray element
editors approved
needs consensus
This needs committee consensus before it can be eligible to be merged.
needs test262 tests
The proposal should specify how to test an implementation. Ideally via github.com/tc39/test262
normative change
Affects behavior required to correctly evaluate some ECMAScript source text
web reality
#3926
opened Jul 24, 2026 by
gibson042
Member
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✨ Normative: add await dictionary
has test262 tests
normative change
Affects behavior required to correctly evaluate some ECMAScript source text
pending stage 4
This proposal has not yet achieved stage 4, but may otherwise be ready to merge.
proposal
This is related to a specific proposal, and will be closed/merged when the proposal reaches stage 4.
Editorial: Refactor IsLooselyEqual for better symmetry
#3918
opened Jul 16, 2026 by
gibson042
Member
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Editorial: Introduce term "non-zero finite Number"
#3917
opened Jul 16, 2026 by
gibson042
Member
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Editorial: Replace Number-specific term "finite" with "finite Number"
editorial change
#3911
opened Jul 13, 2026 by
gibson042
Member
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Normative: RegExp Buffer Boundaries
has test262 tests
normative change
Affects behavior required to correctly evaluate some ECMAScript source text
pending stage 4
This proposal has not yet achieved stage 4, but may otherwise be ready to merge.
proposal
This is related to a specific proposal, and will be closed/merged when the proposal reaches stage 4.
#3905
opened Jul 10, 2026 by
rbuckton
Member
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