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Functions without return incorrectly get their return argument from the last evaluated expression

C-VMIssues and PRs related to the Boa Virtual Machine.Issues and PRs related to the Boa Virtual Machine.

E-MediumMedium difficulty problemMedium difficulty problem

Status: Open.

Bug

#4485 In boa-dev/boa;

· jedel1043 opened on Oct 24, 2025

Audit public APIs

A-APIChanges related to public APIsChanges related to public APIs

E-MediumMedium difficulty problemMedium difficulty problem

Help WantedExtra attention is neededExtra attention is needed

Status: Open.

Task

#4524 In boa-dev/boa;

· jedel1043 opened on Nov 7, 2025

fix(string): ensure separator is an object before calling Symbol.split

A-BugSomething isn't workingSomething isn't working

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

Waiting On AuthorWaiting on PR changes from the authorWaiting on PR changes from the author

Status: Open (in progress).

boa-dev/boanumber 4664

#4664 In boa-dev/boa;

· amrkhaled104 opened on Feb 22, 2026

Add support for duplicate named capturing groups in regex

A-EnhancementNew feature or requestNew feature or request

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

Status: Open (in progress).

boa-dev/boanumber 4550

#4550 In boa-dev/boa;

· n-faria opened on Nov 27, 2025

Make JsAsyncGenerator fully type safe

A-InternalChanges that don't modify execution behaviourChanges that don't modify execution behaviour

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Open (in progress).

boa-dev/boanumber 5066

#5066 In boa-dev/boa;

· jedel1043 opened on Mar 14, 2026

Optimize array unshift

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Open (in progress).

boa-dev/boanumber 5076

#5076 In boa-dev/boa;

· yush-1018 opened on Mar 14, 2026

Draft: Initial implementation of ShadowRealm built-in with realm isolation

C-ActionsPull requests that update Github Actions codePull requests that update Github Actions code

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-DependenciesPull requests that update a dependency filePull requests that update a dependency file

C-RuntimeIssues and PRs related to Boa's runtime featuresIssues and PRs related to Boa's runtime features

C-TestsIssues and PRs related to the tests.Issues and PRs related to the tests.

Waiting On AuthorWaiting on PR changes from the authorWaiting on PR changes from the author

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Draft (not ready).

boa-dev/boanumber 5077

#5077 In boa-dev/boa;

· ParthMozarkar opened on Mar 14, 2026

feat(intl): implement Number.prototype.toLocaleString with Intl support

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-TestsIssues and PRs related to the tests.Issues and PRs related to the tests.

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Open (in progress).

boa-dev/boanumber 5078

#5078 In boa-dev/boa;

· alienx5499 opened on Mar 14, 2026

Implement core disposal logic for explicit resource management

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-TestsIssues and PRs related to the tests.Issues and PRs related to the tests.

C-VMIssues and PRs related to the Boa Virtual Machine.Issues and PRs related to the Boa Virtual Machine.

Waiting On AuthorWaiting on PR changes from the authorWaiting on PR changes from the author

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Draft (not ready).

boa-dev/boanumber 5079

#5079 In boa-dev/boa;

· abhinavs1920 opened on Mar 14, 2026

feat(intl): implement Date.prototype.toLocaleString, toLocaleDateStri…

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-IntlChanges related to the `Intl` implementationChanges related to the `Intl` implementation

C-TestsIssues and PRs related to the tests.Issues and PRs related to the tests.

Waiting On AuthorWaiting on PR changes from the authorWaiting on PR changes from the author

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Open (in progress).

boa-dev/boanumber 5080

#5080 In boa-dev/boa;

· alienx5499 opened on Mar 15, 2026

typedarray: use locale-sensitive separator in %TypedArray%.prototype.toLocaleString

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-IntlChanges related to the `Intl` implementationChanges related to the `Intl` implementation

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Open (in progress).

boa-dev/boanumber 5089

#5089 In boa-dev/boa;

· mrhapile opened on Mar 15, 2026

Implement Temporal.Duration.prototype.toLocaleString

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-Documentationupdate documentationupdate documentation

Status: Open (in progress).

boa-dev/boanumber 5091

#5091 In boa-dev/boa;

· SKM2227229725 opened on Mar 15, 2026

fix(docs): fix typos and doc link formatting in documentation #5092

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-Documentationupdate documentationupdate documentation

C-ParserIssues surrounding the parserIssues surrounding the parser

C-RuntimeIssues and PRs related to Boa's runtime featuresIssues and PRs related to Boa's runtime features

C-VMIssues and PRs related to the Boa Virtual Machine.Issues and PRs related to the Boa Virtual Machine.

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Open (in progress).

boa-dev/boanumber 5093

#5093 In boa-dev/boa;

· MayankRaj435 opened on Mar 15, 2026

refactor(parser): implement ErrorContext for Error, remove redundant …

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-ParserIssues surrounding the parserIssues surrounding the parser

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Open (in progress).

boa-dev/boanumber 5095

#5095 In boa-dev/boa;

· MayankRaj435 opened on Mar 15, 2026

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

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Open (in progress).

boa-dev/boanumber 5096

#5096 In boa-dev/boa;

· JkrishnaD opened on Mar 15, 2026

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

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-IntlChanges related to the `Intl` implementationChanges related to the `Intl` implementation

C-TestsIssues and PRs related to the tests.Issues and PRs related to the tests.

Status: Draft (not ready).

boa-dev/boanumber 5098

#5098 In boa-dev/boa;

· alienx5499 opened on Mar 15, 2026

docs: add JsObject design document

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-Documentationupdate documentationupdate documentation

Status: Draft (not ready).

boa-dev/boanumber 5099

#5099 In boa-dev/boa;

· ParthMozarkar opened on Mar 15, 2026

feat(vm): emit Opcode::Debugger for debugger; statements

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-VMIssues and PRs related to the Boa Virtual Machine.Issues and PRs related to the Boa Virtual Machine.

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Open (in progress).

boa-dev/boanumber 5100

#5100 In boa-dev/boa;

· tkshsbcue opened on Mar 15, 2026

Implement FinalizationRegistry

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-CLIIssues and PRs related to the Boa command line interface.Issues and PRs related to the Boa command line interface.

C-DependenciesPull requests that update a dependency filePull requests that update a dependency file

C-GCIssue related to garbage collectionIssue related to garbage collection

C-TestsIssues and PRs related to the tests.Issues and PRs related to the tests.

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Draft (not ready).

boa-dev/boanumber 5101

#5101 In boa-dev/boa;

· jedel1043 opened on Mar 15, 2026

Refactor parser error context API by implementing ErrorContext for Error

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-ParserIssues surrounding the parserIssues surrounding the parser

Status: Open (in progress).

boa-dev/boanumber 5103

#5103 In boa-dev/boa;

· linisha15 opened on Mar 15, 2026

Improve readability of CLI trace output

C-BuiltinsPRs and Issues related to builtins/intrinsicsPRs and Issues related to builtins/intrinsics

C-VMIssues and PRs related to the Boa Virtual Machine.Issues and PRs related to the Boa Virtual Machine.

Waiting On ReviewWaiting on reviews from the maintainersWaiting on reviews from the maintainers

Status: Open (in progress).

boa-dev/boanumber 5104

#5104 In boa-dev/boa;

· sahanaxzy opened on Mar 15, 2026