v0.23

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•Last updated Sep 30, 2026

Next version of Boa

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Audit public APIs
Task
boa-dev/boa#4524 · opened on Nov 7, 2025 · v0.23
21
Add support for duplicate named capturing groups in regex
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#4550 opened Nov 27, 2025 · Updated Mar 16, 2026
6
Implement core disposal logic for explicit resource management
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#5079 opened Mar 14, 2026 · Updated Sep 1, 2026
20
feat(intl): implement Temporal.Instant.prototype.toLocaleString
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#5096 opened Mar 15, 2026 · Updated Mar 31, 2026
7
feat(intl): implement Temporal.PlainYearMonth.prototype.toLocaleString
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#5098 opened Mar 15, 2026 · Updated Apr 22, 2026
14
Add MVP of virtual machine tracer
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#4931 opened Mar 7, 2026 · Updated Sep 7, 2026
7
perf: elide function environment when only this escapes into arrows
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#5019 opened Mar 12, 2026 · Updated Apr 28, 2026
2
docs: update REPL demo GIF with modern JS features
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#4835 opened Mar 3, 2026 · Updated Mar 17, 2026
8
[WIP] Implement Temporal.ZonedDateTime.prototype.toLocaleString
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#5199 opened Mar 21, 2026 · Updated Sep 27, 2026Draft
3
refactor: extract type-check boilerplate into a single require_internal_slot! macro
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#5233 opened Mar 23, 2026 · Updated Sep 2, 2026Draft
11
refactor: TypedArray uses usize instead of u64 for internal properties
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#5263 opened Mar 26, 2026 · Updated May 11, 2026
12
feat(clone): add structuredClone support for Error objects and relate…
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#5280 opened Mar 28, 2026 · Updated Sep 1, 2026
6
Add completed PropertyDescriptor type
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#5284 opened Mar 30, 2026 · Updated Sep 1, 2026
5
feat: implement Temporal.PlainMonthDay.prototype.toLocaleString
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#5285 opened Mar 30, 2026 · Updated Mar 30, 2026
fix Response.redirect URL handling
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#5302 opened Apr 5, 2026 · Updated Sep 1, 2026
6
fix(regexp): align lastIndex with code point boundary under /u and /v
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#5303 opened Apr 5, 2026 · Updated Aug 30, 2026
5
feat(compiler): Generate single emit opcode for negative numbers
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#5305 opened Apr 7, 2026 · Updated Aug 30, 2026
4
fix(object/ ): convert remaining panics to EngineError::Panic
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#5311 opened Apr 9, 2026 · Updated Sep 20, 2026
7
add Request body methods
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#5322 opened Apr 11, 2026 · Updated Sep 20, 2026
17
fix: deep clone scope in FunctionEnvironment to prevent variable leak…
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#5339 opened Apr 18, 2026 · Updated Sep 20, 2026
5
[1.0 blocking] Implement Copy for JsValue (or alternative)
Feature
boa-dev/boa#5371 · opened on May 16, 2026 · v0.23
2
Rust inheritance is broken
Bug
boa-dev/boa#5372 · opened on May 16, 2026 · v0.23
11
fix(annex-b): CallExpression as assignment LHS throws ReferenceError at runtime
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#5402 opened Jun 18, 2026 · Updated Jul 24, 2026
1
fix(parser): support async arrow functions in default exports
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#5443 opened Jul 23, 2026 · Updated Jul 23, 2026
Fix register forwarding when the right operand mutates the left local
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#5457 opened Jul 25, 2026 · Updated Jul 27, 2026
2

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v0.23

Audit public APIs

Add support for duplicate named capturing groups in regex

Implement core disposal logic for explicit resource management

feat(intl): implement Temporal.Instant.prototype.toLocaleString

feat(intl): implement Temporal.PlainYearMonth.prototype.toLocaleString

Add MVP of virtual machine tracer

perf: elide function environment when only `this` escapes into arrows

docs: update REPL demo GIF with modern JS features

[WIP] Implement Temporal.ZonedDateTime.prototype.toLocaleString

refactor: extract type-check boilerplate into a single `require_internal_slot!` macro

refactor: `TypedArray` uses `usize` instead of `u64` for internal properties

feat(clone): add structuredClone support for Error objects and relate…

Add completed `PropertyDescriptor` type

feat: implement `Temporal.PlainMonthDay.prototype.toLocaleString`

fix Response.redirect URL handling

fix(regexp): align lastIndex with code point boundary under /u and /v

feat(compiler): Generate single emit opcode for negative numbers

fix(object/ ): convert remaining panics to EngineError::Panic

add Request body methods

fix: deep clone scope in FunctionEnvironment to prevent variable leak…

[1.0 blocking] Implement `Copy` for `JsValue` (or alternative)

Rust inheritance is broken

fix(annex-b): CallExpression as assignment LHS throws ReferenceError at runtime

fix(parser): support async arrow functions in default exports

Fix register forwarding when the right operand mutates the left local

Issues